Illumination system adaptable to a cooling appliance

• US 8,384,290 B2
• Filed: 05/27/2010
• Issued: 02/26/2013
• Est. Priority Date: 04/02/2010
• Status: Expired due to Fees

• Current Assignee: Chang Wah Electromaterials Inc.
• Original Assignee: Top Energy Saving System Corp.
• Inventors: Tsai, Wen-Kuei
• Primary Examiner(s): Owens, Douglas W
• Assistant Examiner(s): PHAM, THAI N
• Application Number:
  US12/789,343
• Publication Number:
  US 20110241548A1
• Time in Patent Office: 1,006 Days
• Field of Search: 315112-118, 315/291, 362 92- 94
• US Class Current: 315/117
• CPC Class Codes: A47F 3/001 Devices for lighting, humidifying, heating, ventilation
• CPC Class Codes: H05B 45/18 using temperature feedback
• CPC Class Codes: H05B 45/56 involving measures to prevent abnormal temperature of the LEDs
• CPC Class Codes: H05B 47/28 Circuit arrangements for protecting against abnormal temperature
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

The present invention is directed to an illumination system adaptable to a cooling appliance. The illumination system includes a lighting module, a mode switch and a controller. Specifically, the lighting module includes at least one lighting device; the mode switch is used to determine a power mode for the lighting module; and the controller provides corresponding power to the lighting device according to the power mode. In one embodiment, the illumination system further includes a heating module having a heater for providing heat to the controller. In another embodiment, the lighting device is disposed near the controller.

Claims

1. An illumination system adaptable to a cooling appliance, comprising:

a lighting module including at least one lighting device;

a mode switch configured to determine a power mode for the lighting module;

a controller configured to provide corresponding power to the lighting device according to the power mode;

a heating module having a heater for providing heat to the controller; and

a first thermal sensor disposed near the lighting device and configured to generate a first sense signal for use by the controller, wherein the controller comprises a comparator configured to compare the first sense signal with at least one predetermined first threshold high temperature in order to prevent a temperature of the lighting device from being exceeding the predetermined threshold.

2. The system of claim 1, wherein the lighting device is one of following:

a light-emitting diode (LED) and an organic light-emitting diode (OLED).

3. The system of claim 1, wherein the mode switch is a normally-closed switch.

4. The system of claim 1, wherein one terminal of the mode switch receives the power, and another terminal of the mode switch transfers the power to the controller.

5. The system of claim 1, wherein the controller comprises a driving circuit configured to generate the corresponding power to the lighting device.

6. The system of claim 1, wherein the heating module further comprises a second thermal sensor disposed near the controller and configured to generate a second sense signal.

7. The system of claim 6, wherein the controller comprises a comparator configured to compare the second sense signal with at least one predetermined second threshold low temperature in order to prevent a temperature of the controller from being too low.

8. The system of claim 6, wherein the controller comprises a comparator configured to compare the second sense signal with at least one predetermined second threshold high temperature in order to prevent a temperature of the heater from being too high.

9. The system of claim 1, further comprising an uninterruptible power supply configured to provide the power, via the mode switch, to the controller, the lighting module and/or the heating module, when a supply interruption of the power is detected.

10. An illumination system adaptable to a cooling appliance, comprising:

a lighting module including at least one lighting device;

a mode switch configured to determine a power mode for the lighting module;

a controller configured to provide corresponding power to the lighting device according to the power mode, wherein the lighting device is disposed near the controller; and

a first thermal sensor disposed near the lighting device and configured to generate a first sense signal for use by the controller, wherein the controller comprises a comparator configured to compare the first sense signal with at least one predetermined first threshold high temperature in order to prevent a temperature of the lighting device from being exceeding the predetermined threshold.

11. The system of claim 10, wherein the lighting device is one of following:

a light-emitting diode (LED) and an organic light-emitting diode (OLED).

12. The system of claim 10, wherein the mode switch is a normally-closed switch.

13. The system of claim 10, wherein one terminal of the mode switch receives the power, and another terminal of the mode switch transfers the power to the controller.

14. The system of claim 10, wherein the controller comprises a driving circuit configured to generate the corresponding power to the lighting device.

15. The system of claim 10, wherein the controller comprises a comparator configured to compare the first sense signal with at least one predetermined first threshold low temperature in order to prevent a temperature of the controller from being too low.

16. The system of claim 10, further comprising an uninterruptible power supply configured to provide the power, via the mode switch, to the controller and/or the lighting module, when a supply interruption of the power is detected.