Security light with lifestyle solutions

A lifestyle lighting device, comprising:

• a light emitting unit, comprising at least a first LED load emitting light with a low light color temperature and a second LED load emitting light with a high light color temperature electrically connected in parallel;
• a light diffuser, covering the light emitting unit to diffuse lights 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;
• and
• a time setting algorithm, working in conjunction with the first external control device for setting a preset time point employed to switch the light emitting unit from performing a first illumination mode to performing a second illumination mode;
• wherein the switching circuitry comprises a first semiconductor switching device electrically connected to the first LED load and a second semiconductor switching device electrically connected to the second LED load, wherein the controller outputs a first control signal to control a first conduction rate of the first semiconductor switching device for delivering a first electric power to the first LED load and outputs a second control signal to control a second conduction rate of the second semiconductor switching device for delivering a second electric power to the second LED load to generate different illuminations characterized with different mingled light color temperatures thru the light diffuser 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 the preset time point is a time point when the time length of the delay time tD expires;
• 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 characterized by a first light intensity and a first mingled light color temperature, wherein the controller manages to output the first control signal and the second control signal to respectively control the first conduction rate of the first semiconductor switching device and the second conduction rate of the second semiconductor switching device to jointly deliver the electric power to the light emitting unit;
• 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 at the preset time point selected by a user, wherein when the second illumination mode is started, the light emitting unit is in a turned off state with the motion sensor being activated, wherein during the second illumination mode when a motion intrusion is detected by the motion sensor, the controller manages to output at least the second control signal to conduct at least the second semiconductor switching device to deliver at least the second electric power to the second LED load to enable the lighting emitting unit to generate a second level illumination characterized by a second light intensity and a second mingled light color temperature thru the light diffuser for a short predetermined time duration before resuming back to the turned off state, wherein the second light intensity of the second level illumination is equal to or higher than the first light intensity of the first level illumination in the first illumination mode, wherein at dawn the light emitting unit is switched off by the photo sensor to end the second illumination mode;
• wherein each of the first LED load and the second 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<V<Vmax featuring electrical characteristics of the LED chip, wherein Vth is a threshold voltage required to trigger the LED chip to start emitting light and Vmax is a maximum operating voltage across the LED chip to avoid a thermal damage or burning out a semiconductor structure of the LED chip;
• wherein when each of the first LED load and the second 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 each of the first LED load and the second 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<VN<N×Vmax.

A lifestyle lighting device, comprising:

• a light emitting unit, configured with an LED load comprising a plurality of LED chips;
• a loading and power control unit, configured with a controller electrically coupled with a switching circuitry electrically connected between a power source and the light emitting unit for controlling an electric power transmitted to the light emitting unit;
• a first external control device electrically coupled with the controller, for delivering at least one first external control signal;
• and
• a time setting algorithm, working in conjunction with the first external control device for managing the light emitting unit on a clock time basis to perform at least a first illumination mode;
• wherein the switching circuitry comprises at least one semiconductor switching device for controlling a transmission of the electric power 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 at least an illumination to perform the first illumination mode;
• wherein when the controller receives the at least one first external control signal generated by the first external control device, the controller operates to activate the time setting algorithm to determine a preset time point and a delay time tD selected by a user to perform the first illumination mode;
• wherein at dusk the light emitting unit is switched on at the preset time point to perform the first illumination mode for the delay time tD according to the at least one first external control signal, wherein upon a maturity of the delay time tD, the light emitting unit is switched off and the lifestyle lighting device is reset for performing a next operating cycle on a daily repetitive basis;
• wherein the LED load 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<V<Vmax featuring electrical characteristics of the LED chip, wherein Vth is a threshold voltage required to trigger the LED chip to start emitting light and Vmax is a maximum operating voltage across the LED chip to avoid a thermal damage or burning out a semiconductor structure of the LED chip;
• wherein when the 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<VN<N×Vmax.