ILLUMINATION SYSTEM

• US 20100164384A1
• Filed: 05/08/2009
• Published: 07/01/2010
• Est. Priority Date: 12/27/2008
• Status: Active Grant

• Current Assignee: Foxconn Technology Co., Ltd., Fuzhun Precision Industry Company Limited (Foxconn Technology Co., Ltd.)
• Original Assignee: Foxconn Technology Co., Ltd., Fuzhun Precision Industry Company Limited (Foxconn Technology Co., Ltd.)
• Inventors: Ku, Chin-Long, Ruan, Qing-Hai
• Granted Patent: US 8,143,789 B2
• Time in Patent Office: Days
• US Class Current: 315/117
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/05599 Material
• CPC Class Codes: H01L 2224/45144 Gold (Au) as principal constituent
• CPC Class Codes: H01L 2224/48092 Helix
• CPC Class Codes: H01L 2224/49107 on the semiconductor or solid-state body
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 2224/85399 Material
• CPC Class Codes: H01L 24/45 of an individual wire connector
• CPC Class Codes: H01L 24/48 of an individual wire connector
• CPC Class Codes: H01L 24/49 of a plurality of wire connectors
• CPC Class Codes: H01L 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/181 Encapsulation
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: Y02B 20/40 : Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

An illumination system includes an LED lamp, a timer, a controlling circuit, a driving circuit and a power source electrically connected together. The timer produces different signals to the controlling circuit at different periods, thereby driving the LED lamp to lighten with different brightness. A light or movement sensor is further electrically connected to the LED lamp to work together with the timer. The sensor cooperating with the timer, detects light or movement of an object to drive the LED lamp to lighten for a while with a corresponding brightness.

Claims

1. An illumination system comprising:

an LED lamp;

a power source;

a timer;

a controlling circuit; and

a driving circuit;

wherein the power source, the timer, the controlling circuit and the driving circuit are electrically connected to the LED lamp, and wherein the timer produces different signals to the controlling circuit at different times to thereby drive the LED lamp to illuminate a road with different brightness.

2. The illumination system as claimed in claim 1, wherein when a traffic flow on the road is high at night, the timer produces a first signal to drive the LED lamp to illuminate with full brightness, and wherein when the traffic flow on the road is low at night, the timer produces a second signal to drive the LED lamp to illuminate with a reduced brightness, and wherein at daytime the timer produces a third signal to turn off the LED lamp.

3. The illumination system as claimed in claim 2, wherein the timer produces the first signal at 18:

00˜

24;

00 to drive the LED lamp to illuminate with 100% brightness.

4. The illumination system as claimed in claim 3, wherein the timer produces the second signal at 24:

00˜

6;

00 to drive the LED lamp to illuminate with 50% brightness.

5. The illumination system as claimed in claim 3, wherein the timer produces the second signal at 3:

00˜

6;

00 to drive the LED lamp to illuminate with 50% brightness.

6. The illumination system as claimed in claim 5, wherein the timer further produce a forth signal at 24:

00˜

3;

00 to drive the LED lamp to illuminate with 80% brightness.

7. The illumination system as claimed in claim 2 further comprising a sensor electrically connected to the LED lamp, wherein the sensor could detect light or movement of an object on the road to produce a fifth signal to the controlling circuit, the LED lamp is activated to lighten for a period in response to the fifth signal.

8. The illumination system as claimed in claim 7, wherein the first, second and third signals are continuous, and the fifth signal is temporary.

9. The illumination system as claimed in claim 8, wherein the controlling circuit only accepts the first and second signals in the period when the fifth signal is simultaneously input thereto and rejects the first and second signals at other times, and the controlling circuit always accepts the third signal and rejects the fifth signal when they are produced at the same time.

10. The illumination system as claimed in claim 7, wherein the period is 10 seconds.

11. The illumination system as claimed in claim 1, wherein the LED lamp comprises two type LEDs which respectively emit cold light and warm light, the LED lamp selectively producing only one of the warm and cold light each time.

12. The illumination system as claimed in claim 11 further comprising a humidity sensor electrically connected to the LED lamp, wherein the humidity sensor could switch the LED lamp between the warm light and the cold light via the controlling circuit in response to a humidity of environment.

13. The illumination system as claimed in claim 12, wherein the humidity sensor drives the LED lamp to emit the warm light when rain or fog in the environment is detected by the humidity sensor, and drives the LED lamp to emit the cold light when other weather conditions are detected by the humidity sensor.

14. The illumination system as claimed in claim 13 further comprising a temperature sensor electrically connected to the LED lamp, wherein the temperature sensor can further switch the LED lamp between the warm and cold light in response to a temperature of environment.

15. The illumination system as claimed in claim 14, wherein the LED lamp always produces the warm light at rainy or fogged day regardless of the temperature.

16. The illumination system as claimed in claim 15, wherein the LED lamp produces the warm light at other weathers when the temperature is below 15.

17. The illumination system as claimed in claim 16, wherein the LED lamp produces the cold light at other weathers when the temperature is no less than 15°

C.