US Pat. No. 10,129,957

SECURITY LIGHT WITH LIFESTYLE SOLUTIONS

VAXCEL INTERNATIONAL CO.,...

1. An LED lighting control device comprising:at least a controllable switching element, electrically connected between at least an LED load configured with a plurality of light emitting diodes and a power source;
a photo sensor, for automatically enabling the performance of the LED lighting control device at dusk and disabling the performance of the lighting device at dawn;
at least one external control device, for generating at least one external control signal for selecting and setting at least one performance mode of the LED load; and
a controller, electrically connected to the at least one controllable switching element and the at least one external control device, wherein the controller controls a conduction rate of the at least one controllable switching element to transmit an average electric power to the LED load;
wherein the controller operates in response to the at least one external control signal from the at least one external control device to perform a lifestyle lighting solution, wherein the LED load is automatically switched on at dusk by the photo sensor to perform a first illumination mode with a first illumination level for a time delay tD counted by a timer embedded in the controller, and upon expiration of the timer the LED load is then switched to perform a second illumination mode with a second illumination level, wherein the second illumination level is either a turned off state or a low level state with a reduced light intensity, the second illumination mode continues till daybreak when the photo sensor operates to switch off the LED load and the controller is reset for performing next operating cycle;
wherein the plurality of light emitting diodes of the LED load and the level of power source are configured to have an adequate combination of in parallel and or in series connections such that an electric current passing through each LED of the LED load remains at an adequate level and thus a voltage V across each LED of the LED load complies with an operating constraint of Vth

US Pat. No. 10,117,313

SENSING LAMP AND SENSING MODULE THEREOF

VAXCEL INTERNATIONAL CO.,...

1. A sensing module, being detachably connected to a light body to selectively turn on a light source, the sensing module comprising:a sensing unit, having at least one sensor, a control circuit and at least one parameter adjusting element, the at least one sensor and the at least one parameter adjusting element being electrically coupled to the control circuit, the control circuit being disposed in the sensing unit; and
an electrical connector, having one side electrically and mechanically connected with the sensing unit, and another side detachably and independently connected to the light body in an electrical and mechanical manner,
wherein a first side of the sensing unit is provided with the at least one sensor, and a second side of the sensing unit is provided with the at least one parameter adjusting element; wherein the second side of the sensing unit is opposite to the first side of the sensing unit; and
wherein the sensing module further comprises a cover partially covering the sensing unit, wherein the sensing unit is capable of rotating to a first angle and a second angle, wherein the at least one sensor at the first side of the sensing unit is not blocked and is capable of performing sensing function when the sensing unit is rotated to the first angle, wherein the at least one parameter adjusting element at the second side of the sensing unit is exposed to being adjusted when the sensing unit is rotated to the second angle.

US Pat. No. 10,321,543

SECURITY LIGHT WITH LIFESTYLE SOLUTIONS

VAXCEL INTERNATIONAL CO.,...

1. A lifestyle security light, comprising:a light emitting unit, configured with a plurality of light emitting diodes;
a controller, electrically coupled with a switching circuitry for controlling an electric power transmitted from a power source to the light emitting unit;
a photo sensor electrically coupled with the controller, for switching on the light emitting unit at dusk and switching off the light emitting unit at dawn;
a motion sensor electrically coupled with the controller, for detecting a motion intrusion;
a first external control device electrically coupled with the controller, for generating at least one first external control signal; and
a time setting algorithm, in conjunction with the first external control device for determining a preset time point to switch the light emitting unit from performing a first illumination mode to performing a second illumination mode;
wherein the switching circuitry is electrically connected between the power source and the light emitting unit, wherein the switching circuitry comprises at least one semiconductor switching device for controlling transmission of different electric powers delivered to the light emitting unit, wherein the controller outputs at least one control signal to control at least a conduction rate of the at least one semiconductor switching device to generate different illuminations for performing at least the first illumination mode and the second illumination mode to characterize a lifestyle lighting solution;
wherein the first illumination mode is a general illumination mode with the motion sensor being temporarily deactivated and the second illumination mode is a motion sensing illumination mode with the motion sensor being activated;
wherein when the controller receives the at least one first external control signal generated by the first external control device, the controller operates the time setting algorithm to set the preset time point determined by a time length of a delay time tD selected by the first external control device and controlled by the controller to convert the light emitting unit from performing the first illumination mode to performing the second illumination mode;
wherein at dusk the light emitting unit is switched on by the photo sensor to perform the first illumination mode with a first level illumination, the first illumination mode with the first level illumination continues for the delay time tD until the light emitting unit is switched to perform the second illumination mode with a second level illumination at the preset time point determined by a user, wherein the second level illumination is designed with a turned off state with a zero light intensity or a low level state with a reduced light intensity, wherein during the second illumination mode whenever a motion is detected by the motion sensor, the controller immediately and responsively manages to increase the electric power transmitted to the light emitting unit to perform a third illumination mode with a third level illumination for a predetermined time duration before resuming back to the turned off state or the low level state in the absence of any succeeding motion intrusion, wherein at dawn the light emitting unit is switched off by the photo sensor to end the second illumination mode;
wherein the plurality of light emitting diodes of the light emitting unit and the power source are configured to have a combination of in parallel and/or in series connections such that an electric current passing through each LED of the light emitting unit remains at an adequate level and thus a voltage V across each LED of the light emitting unit complies with an operating constraint of Vth

US Pat. No. 10,433,401

SECURITY LIGHT WITH LIFESTYLE SOLUTIONS

VAXCEL INTERNATIONAL CO.,...

1. A lifestyle security light, comprising:a light emitting unit, configured with at least one LED load comprising a plurality of LED chips;
a light diffuser, covering the light emitting unit to diffuse light generated by the light emitting unit;
a loading and power control unit, configured with a controller electrically coupled with a switching circuitry, for controlling and transmitting an electric power to the light emitting unit;
a photo sensor electrically coupled with the controller, for switching on the light emitting unit at dusk and switching off the light emitting unit at dawn;
a motion sensor electrically coupled with the controller, for detecting a motion intrusion;
a first external control device electrically coupled with the controller, for delivering at least one first external control signal;
a time setting algorithm, working in conjunction with the first external control device for determining a preset time point to switch the light emitting unit from performing a first illumination mode to performing a second illumination mode; and
a power supply unit;
wherein the switching circuitry is electrically connected between a power source and the light emitting unit, wherein the switching circuitry comprises at least one semiconductor switching device for controlling transmission of different electric powers delivered to the light emitting unit, wherein the controller outputs at least one control signal to control at least a conduction rate of the at least one semiconductor switching device to generate different illuminations for performing at least a first illumination mode and a second illumination mode according to signals received from the first external control device, the photo sensor and the motion sensor to characterize a lifestyle lighting solution;
wherein the first illumination mode is a general illumination mode with the motion sensor being temporarily deactivated and the second illumination mode is a motion sensing illumination mode with the motion sensor being activated;
wherein when the controller receives the at least one first external control signal generated by the first external control device, the controller operates the time setting algorithm to set the preset time point determined by a time length of a delay time tD selected by the first external control device and controlled by the controller to convert the light emitting unit from performing the first illumination mode to performing the second illumination mode;
wherein at dusk the light emitting unit is switched on by the photo sensor to perform the first illumination mode with a first level illumination, the first illumination mode with the first level illumination continues for the delay time tD until the light emitting unit is switched to perform the second illumination mode started with a second level illumination at the preset time point determined by a user;
wherein during the second illumination mode whenever a motion intrusion is detected by the motion sensor, the controller immediately and responsively manages to increase the electric power transmitted to the light emitting unit to generate a high level illumination for a predetermined time duration before resuming back to the second level illumination in the absence of any succeeding motion intrusion, wherein the light intensity of the high level illumination is equal to or higher than the light intensity of the first level Illumination and the light intensity of the first level illumination is equal to or higher then the light intensity of the second level illumination;
wherein at dawn the light emitting unit is switched off by the photo sensor to end the second illumination mode;
wherein the at least one LED load comprising a plurality of LED chips is designed with a combination of in series and/or in parallel connections of LED chips such that when incorporated with an adequate level setting of a DC power an electric current passing through each LED chip of the light emitting unit remains at a stable level and a voltage V across each LED chip of the light emitting unit complies with an operating constraint of Vth wherein when the at least one LED load is configured with a plurality of N number LED chips or N sets of LED chips electrically connected in series, a working voltage VN across the at least one LED load is confined in a domain between a minimum voltage equal to the sum of the threshold voltages of all LED chips or sets of LED chips electrically connected in series and a maximum voltage equal to the sum of the maximum operating voltages of all LED chips or sets of LED chips electrically connected in series, identically expressed as N×Vth

US Pat. No. 10,426,016

SENSING MODULE, SENSING LAMP HAVING THE SAME, WALL SWITCH HAVING THE SAME, AND LED WALL LAMP

VAXCEL INTERNATIONAL CO.,...

1. A control module, being connected to a light body to control a lighting performance of a light source in the light body, the control module comprising:a sensing unit, having at least one sensor, a control circuit, at least one operating parameter adjusting element and a space to accommodate the at least one sensor, the control circuit and the at least one operating parameter adjusting element, the at least one sensor and the at least one operating parameter adjusting element being electrically coupled to the control circuit electrically connected to the light source, the control circuit being disposed inside the space of the sensing unit; and
a cover, partially covering the sensing unit;
wherein the at least one operating parameter adjusting element is disposed on one side of the sensing unit and the at least one sensor is disposed on the opposite side of the sensing unit; wherein the sensing unit is rotatable against a central axis of the control module through a rotatable structure;
wherein the cover is designed with an opening in the front facing a detection space, wherein when the sensing unit is rotated to a first angle position the at least one sensor is moved to locate in the opening to expose to the detection space, wherein when the sensing unit is rotated to a second angle position, the at least one operating parameter adjusting element is moved to locate in the opening and is exposed to being conveniently adjusted.

US Pat. No. 10,492,261

LIFESTYLE SECURITY LIGHT

Vaxcel International Co.,...

1. A method for eliminating a hardship of an unexpected shutoff of light in using a motion activated lighting device for an occupancy lighting solution, comprising:providing a motion sensor working in conjunction with a controller circuitry to turn on a lighting device to perform a high level illumination upon detecting a motion signal and continue the high level illumination for a time duration set by an operating timer before entering a process to turnoff the lighting device;
providing a shutoff transition mode to turnoff the lighting device over a predetermined time period upon a maturity of the time duration set by the operating timer, wherein the shutoff transition mode is designed with a two-step shutoff process in the predetermined time period, wherein during a first step shutoff process, the high level illumination is instantly dropped to a noticeably lower level illumination followed by a second step shutoff process to turn off the lower level illumination at an end of the predetermined time period;
providing the instant drop of light from the high level illumination to the noticeably lower level to serve as a warning signal to an occupant remaining in a detection space; and
providing an interruption motion signal generated by the occupant responding to the warning signal to stop the two-step shutoff process and restart a new cycle of the high level illumination with a new operating timer;
wherein during the shutoff transition mode if no motion signal is detected indicating the detection space is unoccupied, the lighting device is thereby successfully turned off.

US Pat. No. 10,264,654

SENSING MODULE, SENSING LAMP HAVING THE SAME, WALL SWITCH HAVING THE SAME, AND LED WALL LAMP

VAXCEL INTERNATIONAL CO.,...

1. A sensing module, being detachably connected to a lamp body to control a lighting performance of a light source installed in the lamp body, the sensing module comprising:a sensing unit, having at least one sensor, a control circuit, at least one operating parameter adjusting element and a housing to accommodate the at least one sensor, the control circuit and the at least one operating parameter adjusting element, the at least one sensor and the at least one parameter adjusting element being electrically coupled to the control circuit, the control circuit being disposed in the housing of the sensing unit; and
an electrical connector, having one side electrically and mechanically connected with the sensing unit, and another side detachably connected to the lamp body in an electrical and mechanical manner,
wherein a first side of the sensing unit is provided with the at least one sensor and a second side of the sensing unit is provided with the at least one operating parameter adjusting element; wherein the second side of the sensing unit is opposite to the first side of the sensing unit; and
wherein the sensing module further comprises a cover partially covering the sensing unit, wherein the sensing unit is rotatable against a central axis of the sensing unit respectively to a first angle position and a second angle position, wherein when the sensing unit is rotated to the first angle position, the at least one sensor on the first side of the sensing unit is not blocked and is capable of performing sensing function, wherein when the sensing unit is rotated to the second angle position, the at least one operating parameter adjusting element on the second side of the sensing unit is exposed to being adjustable.

US Pat. No. 10,326,301

TWO-LEVEL LED SECURITY LIGHT WITH MOTION SENSOR

Vaxcel International Co.,...

1. A two-level LED security light comprising:a light-emitting unit;
a loading and power control unit;
a light sensing control unit;
a motion sensing unit;
a power supply unit; and
at least one external control unit;
wherein the light-emitting unit comprises a plurality of LEDs divided into two sets of LEDs with a first set of the light-emitting unit having N number LEDs and a second set of the light-emitting unit having M number LEDs, wherein N and M are positive integers;
wherein the loading and power control unit comprises a controller and at least two switching devices including at least one first switching device and at least one second switching device, wherein the controller is electrically coupled to the light sensing control unit, the motion sensing unit and the at least two switching devices;
wherein the at least one first switching device and the at least one second switching device are respectively and electrically coupled with the first set of the light-emitting unit and the second set of the light-emitting unit, wherein the at least one first switching device and the at least one second switching device are controlled by the controller to be conducting or cut-off to perform at least a first switching mode and a second switching mode respectively;
wherein in the first switching mode the controller outputs at least a first control signal to turn on the first set of the light-emitting unit to perform a low level illumination mode characterized by a first light intensity and in the second switching mode the controller outputs at least a second control signal to turn on the second set of the light-emitting unit to perform a high level illumination mode characterized by a second light intensity, wherein the second light intensity is higher than the first light intensity;
wherein when an ambient light detected by the light sensing control unit is lower than a first predetermined value, the loading and power control unit manages to operate the first switching mode to turn on the first set of the light-emitting unit for performing the low level illumination mode with the first light intensity;
wherein when the ambient light detected by the light sensing control unit is higher than a second predetermined value, the loading and power control unit manages to turn off all the LEDs in the light-emitting unit;
wherein when a motion signal is detected by the motion sensing unit, the loading and power control unit manages to operate at least the second switching mode to turn on the second set of the light-emitting unit to perform a high level illumination mode with a second light intensity for a predetermined time duration before resuming to the low level illumination mode with the first light intensity; and
wherein the at least one external control unit is electrically coupled to the controller for adjusting at least one of the first light intensity, the second light intensity or the predetermined duration, or for switching at least from one performance mode to a different performance mode characterized with different light intensities.

US Pat. No. 10,491,032

LIFESTYLE SECURITY LIGHT

Vaxcel International Co.,...

1. A lifestyle LED security light, comprising:a light-emitting unit, including an LED load configured with a plurality of LEDs;
a loading and power control unit;
a light sensing control unit;
a motion sensing unit; and
a power supply unit;
wherein the loading and power control unit comprises a controller and a switching circuitry, wherein the controller is electrically coupled with the switching circuitry, the light sensing control unit and the motion sensing unit, wherein the switching circuitry is electrically connected between a power source and the LED load of the light-emitting unit, wherein the LED load is switched on or switched off by the light sensing control unit and controlled by the loading and power control unit, wherein the switching circuitry comprises at least a semiconductor switching device for controlling transmission of different electric powers delivered to the LED load, wherein the controller outputs control signals to control the switching circuitry for delivering different electric powers from the power source to drive the light-emitting unit for generating different illuminations characterized by different light intensities according to signals received from the light sensing control unit and the motion sensing unit;
wherein the power source configured in the power supply unit outputs a DC power for operating the LED lighting device;
wherein a time setting unit is further installed and is electrically coupled with the controller for adjusting and setting a time duration for each of the different illumination modes, wherein when an ambient light detected by the light sensing control unit is lower than a first predetermined value, the loading and power control unit operates to switch on the LED load to perform a first illumination mode to generate a first level illumination for a first predetermined time duration preset by the time setting unit, wherein when a motion intrusion is detected by the motion sensing unit, the loading and power control unit manages to increase the electric power transmitted to the LED load to perform a second illumination mode to generate a second level illumination for a second predetermined time duration preset by the time setting unit, wherein the light intensity of the second level illumination is higher than the light intensity of the first level illumination, wherein when the ambient light detected by the light sensing control unit is higher than a second predetermined value, the loading and power control unit operates to switch off the LED load;
wherein the first level illumination is a low level illumination and the second level illumination is a high level illumination, wherein during the performance of the first illumination mode, the low level illumination creates four advantages for performing a lifestyle lighting solution, wherein a first advantage is a creation of an aesthetic night scene when people are outside of a detection area of the motion sensor, wherein a second advantage is the creation of a navigation capacity similar to a light house for guiding people to safely walk to a destination in an outdoor living area, wherein a third advantage is a prevention of a hardship of light being unexpectedly and completely shutoff while a person is still in the detection space due to expiration of a timer and a simple motion by the person can immediately bring the LED security light back to the high level illumination, wherein a fourth advantage is an occupancy declaration that a living space being occupied to discourage an intrusion or break in intention.

US Pat. No. 10,506,686

SENSING MODULE, SENSING LAMP HAVING THE SAME, WALL SWITCH HAVING THE SAME, AND LED WALL LAMP

VAXCEL INTERNATIONAL CO.,...

1. A sensing lamp comprising:a lamp body, for accommodating a light source inside;
a sensing module, directly connected with the lamp body, for performing a forward sensing function and controlling an on/off illumination performance, the sensing module further comprising;
a sensing unit, having at least one sensor, a control circuit and at least one parameter adjusting element; the at least one sensor and the at least one parameter adjusting element being electrically coupled to the control circuit; a first side of the sensing unit being provided with the at least one sensor and a second side of the sensing unit being provided with the at least one parameter adjusting element, the first side of the sensing unit and the second side of the sensing unit being disposed in an opposite direction against each other, the control circuit being disposed inside the sensing module; and
a cover, partially covering the sensing unit; and
a support unit, configured with at least one tubular supporting arm fastened and connected with a back plate mounted on a wall electric outlet for holding the lamp body and the sensing module and for accommodating power wires for delivering an electric power from the wall electric outlet thru the back plate to the lamp body and the sensing module;
wherein the lamp body and the sensing module are aligned along a central axis passing thru a center of the lamp body and the center of the sensing module, wherein the sensing unit is capable of rotating around the central axis to a first angle position and to a second angle position, wherein when the sensing unit is rotated to the first angle position, the at least one parameter adjusting element is blocked by the back plate and the at least one sensor on the first side of the sensing unit is able to perform the forward sensing function; wherein when the sensing unit is rotated to the second angle position, the at least one parameter adjusting element on the opposite side of the sensing unit is not blocked and is exposed to being conveniently adjusted;
wherein the lamp body is constructed as being non-angle adjustable for a vertical swing around an axis perpendicular to the central axis; and wherein the at least one tubular supporting arm is either connected to the sensing module or connected to the lamp body for delivering the electric power to the control circuit and the light source for operating the sensing lamp.

US Pat. No. 10,225,902

TWO-LEVEL SECURITY LIGHT WITH MOTION SENSOR

Vaxcel International Co.,...

1. A life-style two-level LED security light comprising:a light-emitting unit configured with an LED load;
a loading and power control unit;
a light sensing control unit;
a motion sensing unit; and
a power supply unit;
wherein the light-emitting unit includes a plurality of LEDs divided into two sets with a first set having N number LEDs and a second set having M number LEDs;
wherein the loading and power control unit includes a controller electrically coupled to the light sensing unit, the motion sensing unit and at least two switching devices including at least a first switching device and a second switching device;
wherein the first switching device and the second switching device are connected with the first set of N number LEDs and the second set of M number LEDs, wherein the first switching device and the second switching device are controlled by the controller to be conducting or cut-off to perform at least a first switching mode and a second switching mode;
wherein in the first switching mode the power supply unit drives at least the first set of N number LEDs to perform a low level illumination with low light intensity and in the second switching mode the power supply unit drives at least the second set of M number LEDs to perform a high level illumination with high light intensity;
wherein when an ambient light detected by the light sensing control unit is lower than a predetermined value, the loading and power control unit manages to turn on the first set of N number LEDs in the light-emitting unit to generate the low level illumination;
wherein when the ambient light detected by the light sensing control unit is higher than the predetermined value, the light-emitting unit is switched off;
wherein when a motion intrusion is detected by the motion sensing unit, the loading and power control unit manages to turn on at least the second set of M number LEDs to generate the high level illumination for a predetermined duration before resuming to the low level illumination; and
wherein the controller comprises at least a programmable integrated circuit device or an application specific integrated circuit.

US Pat. No. 10,568,183

MICROCONTROLLER-BASED MULTIFUNCTIONAL ELECTRONIC SWITCH AND LIGHTING APPARATUS HAVING THE SAME

VAXCEL INTERNATIONAL CO.,...

1. A microcontroller based electronic switch, comprising:a controllable switching circuitry, electrically connected between an LED load including a plurality of LEDs and a power source for controlling and delivering a DC power to said LED load;
at least one detection device, for detecting at least one external control signal and convert said at least one external control signal into at least one message carrying sensing signal with at least one signal format; and
a microcontroller designed to receive and interpret said at least one message sensing signal generated by said at least one detection device;
wherein said at least one detection device is electrically coupled with said microcontroller;
wherein said controllable switching circuitry is electrically coupled with said microcontroller, wherein said microcontroller outputs a control signal to control a conduction state or a cutoff state of said controllable switching circuitry according to said at least one message carrying sensing signal generated by said at least one detection device;
wherein when said controllable switching circuitry is in said conduction state, said microcontroller further controls an electric power transmission level from said power source to said LED load according to said at least one signal format of said at least one message carrying sensing signal received from said at least one detection device;
wherein said at least one signal format of said at least one message carrying sensing signal is a short voltage signal, a long voltage signal, a constant voltage signal, a plurality of said short voltage signals, a plurality of said long voltage signals or a combination of said short voltage signal and said long voltage signal; wherein said short voltage signal and said long voltage signal are defined by a signal time length of a voltage signal generated by said detection device; wherein when said signal time length of said voltage signal is equal to or shorter than a preset time interval, said voltage signal is said short voltage signal, wherein when said signal time length of said voltage signal is longer than said preset time interval, said voltage signal is said long voltage signal, or by said signal time length of a series of pulse signals consecutively generated;
wherein when said microcontroller receives said at least one message carrying sensing signal, said microcontroller operates to activate a corresponding process according to said at least one signal format of said at least one message carrying sensing signal to perform at least one of illumination performance control modes including at least an on/off switch control mode, a dimming control mode, an illumination level switching control mode and a delay shutoff control mode;
wherein said LED load connected to said microcontroller based electronic switch is confined to a configuration that said plurality of LEDs of said LED load are managed with an adequate in series and/or in parallel connections such that when incorporated with an adequate level setting of said DC power, an electric current passing through each LED of said LED load remains at a safety level such that a voltage V across each LED complies with an operating constraint of Vth wherein when said LED load is configured with a plurality of N number LEDs or N sets of parallel connected LEDs electrically connected in series, a working voltage VN across said LED load is confined in a domain between a minimum voltage equal to the sum of said threshold voltages of all LEDs or sets of parallel connected LEDs electrically connected in series and a maximum voltage equal to the sum of said maximum operating voltages of all LEDs or sets of parallel connected LEDs electrically connected in series, identically expressed as N×Vth wherein said microcontroller is a programmable integrated circuit device or an application specific integrated circuit for generating said control signal.

US Pat. No. 10,516,292

TWO-LEVEL LED SECURITY LIGHT WITH MOTION SENSOR

Vaxcel International Co.,...

1. A lifestyle two-level LED security light comprising:a light-emitting unit configured with an LED load;
a loading and power control unit;
a light sensing control unit;
a motion sensing unit; and
a power supply unit;
wherein the LED load of the light-emitting unit includes a plurality of LEDs divided into two sets with a first set of N number LEDs and a second set of M number LEDs, wherein N and M are positive integers;
wherein the loading and power control unit includes a controller electrically coupled to the light sensing control unit, the motion sensing unit and at least two switching devices including at least a first switching device and a second switching device;
wherein the first switching device and the second switching device are electrically connected with the first set of N number LEDs and the second set of M number LEDs, wherein the first switching device and the second switching device are controlled by the controller to be conducting or cut-off to perform at least a first switching mode and a second switching mode;
wherein in the first switching mode the power supply unit drives at least the first set of N number LEDs to perform a low level illumination with a low light intensity and in the second switching mode the power supply unit drives at least the second set of M number LEDs to perform a high level illumination with a high light intensity;
wherein when an ambient light detected by the light sensing control unit is lower than a predetermined value, the loading and power control unit manages to turn on the first set of N number LEDs in the light-emitting unit to generate the low level illumination;
wherein when the ambient light detected by the light sensing control unit is higher than the predetermined value, the light-emitting unit is switched off;
wherein when a motion intrusion is detected by the motion sensing unit, the loading and power control unit manages to turn on at least the second set of M number LEDs to generate the high level illumination for a predetermined duration before resuming to the low level illumination; wherein the controller comprises at least a programmable integrated circuit device or an application specific integrated circuit, and wherein the plurality of LEDs of the first set of N number LEDs and the second set of M number LEDs in conjunction with a power level setting of the power supply unit are respectively designed with a configuration of in series and/or in parallel connections of LEDs such that an electric current passing through each LED of the light-emitting unit remains at an adequate level, and a voltage V across each LED complies with an operating constraint of Vth

US Pat. No. 10,582,584

LED SECURITY LIGHT AND LED SECURITY LIGHT CONTROL DEVICE THEREOF

Vaxcel International Co.,...

1. An LED security light, comprising:a light emitting unit configured with an LED load;
a photo sensor unit;
a motion sensor unit;
a loading and power control unit; and
a power supply unit comprising a first power source and a second power source;
wherein the loading and power control unit comprises a controller and a power switching circuitry; wherein the controller is electrically coupled with the power switching circuitry, the photo sensor unit and the motion sensor unit;
wherein the power switching circuitry is configured with at least one switching element; wherein the at least one switching element is electrically coupled between the second power source and the light emitting unit; wherein the controller outputs a control signal to control a conduction state of the at least one switching element to connect or disconnect the second power source to the light emitting unit;
wherein when the first power source is connected to the light emitting unit, the controller operates to deliver an average electric current to the LED load to perform a first motion sensing illumination mode according to signals received from the photo sensor unit and the motion sensors unit;
wherein when an ambient light detected by the photo sensor unit is lower than a first predetermined value, the LED load is switched on;
wherein when the ambient light detected by the photo sensor unit is higher than a second predetermined value, the LED load is switched off;
wherein when a motion intrusion signal is detected by the motion sensor, the loading and power control unit responsively manages the LED load to perform a first high level illumination of the first motion sensing illumination mode for a predetermined time duration to create an effect of security alert;
wherein when the second power source is connected to the light emitting unit, the controller operates to deliver an average electric current to drive the LED load to perform a second motion sensing illumination mode according to signals received from the photo sensor unit and the motion sensor unit;
wherein when the ambient light detected by the photo sensor unit is lower than the first predetermined value, the LED load is switched on;
wherein when the ambient light detected by the photo sensor unit is higher than the second predetermined value, the LED load is switched off;
wherein when the motion intrusion signal is detected by the motion sensor unit, the loading and power control unit responsively manages the LED load to perform a second high level illumination of the second motion sensing illumination mode for the predetermined time duration, wherein the first high level illumination is greater than the second high level illumination.

US Pat. No. 10,622,831

TWO-LEVEL LED SECURITY LIGHT WITH MOTION SENSOR

Vaxcel International Co.,...

1. A two-level LED security light comprising:a light-emitting unit;
a loading and power control unit;
a light sensing control unit;
a motion sensing unit;
a power supply unit; and
a time setting unit;
wherein the light-emitting unit is configured with an LED load comprising at least one LED;
wherein the loading and power control unit comprises a controller and a switching circuitry, wherein the controller is electrically coupled with the switching circuitry; wherein the switching circuitry is electrically coupled with the power supply unit and the light-emitting unit, wherein the controller outputs a pulse width modulation (PWM) signal to control the switching circuitry for delivering different average electric currents from the power supply unit to drive the light-emitting unit for generating different illuminations, wherein the controller outputs the PWM signal respectively to have a short Ton and a long Ton in each duty cycle to control the switching circuitry such that the light-emitting unit respectively generates at least a low level illumination and at least a high level illuminations according to signal(s) received from the light sensing control unit and the motion sensing unit;
wherein at dusk when an ambient light detected by the light sensing control unit is lower than a first predetermined value, the loading and power control unit operates to turn on the light-emitting unit to perform a low level illumination for a first predetermined time duration;
wherein during the performance of the low level illumination mode, the low level illumination creates two lifestyle innovations for performing a lifestyle lighting solution, wherein a first innovation is the creation of an aesthetic night scene when people are outside of a detection area of the motion sensor, wherein a second innovation is the creation of a navigation capacity similar to a light house for guiding people to safely walk to a destination in an outdoor living area;
wherein when a motion signal is detected by the motion sensing unit, the loading and power control unit operates to increase the average electric current delivered to the LED load of the light-emitting unit to perform a high level illumination for a preset time period before being switched back to the low level illumination;
wherein the light intensity of the high level illumination is higher than the light intensity of the low level illumination;
wherein at dawn when the ambient light detected by the light sensing control unit is higher than a second predetermined value, the light-emitting unit is switched off by the loading and power control unit;
wherein the time setting unit is used for adjusting and setting at least a time length of at least one of the first predetermined time duration of the low level illumination and the preset time period of the high level illumination;
wherein the power supply unit is an AC/DC power converter to convert AC power into a DC power for operating the security light;
wherein the LED load in conjunction with an adequate level setting of the DC power from the power supply unit is configured with an adequate LED combination of in series and in parallel connections such that the average electric current passing through each LED of the LED load remains at an adequate level, and a voltage V across each LED complies with an operating constraint of Vth wherein Vth is a threshold voltage required to trigger each LED to start emitting light and Vmax is a maximum voltage across each LED to avoid a thermal damage to the LED construction;
wherein when the LED load is configured with a plurality of N number LEDs or N sets of LEDs electrically connected in series, a working voltage VN across the LED load is confined in a domain between a minimum voltage equal to the sum of the threshold voltages of all LEDs or sets of LEDs electrically connected in series and a maximum voltage equal to the sum of the maximum operating voltages of all LEDs or sets of LEDs electrically connected in series, identically expressed as N×Vth