Apparatus integrated with cold light emergency lamp and cold light exit sign

• US 20070096663A1
• Filed: 03/16/2006
• Published: 05/03/2007
• Est. Priority Date: 10/28/2005
• Status: Abandoned Application

• Current Assignee: Allied Lighting Systems, Incorporated
• Original Assignee: Allied Lighting Systems, Incorporated
• Inventors: Wong, ChiWai, Li, ChiKwong
• Application Number:
  US11/376,861
• Publication Number:
  US 20070096663A1
• Time in Patent Office: Days
• US Class Current: 315/312
• CPC Class Codes: H05B 44/00 Circuit arrangements for operating electroluminescent light sources for operating light emitting diodes H05B45/00
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]

Abstract

A cold light emergency lamp, a cold light exit sign, a centralized control box of cold light emergency lamp and cold light exit sign, and an apparatus integrated with cold light emergency lamp and cold light exit sign are disclosed. A plurality of sockets are arranged on the body of the centralized control box for being inserted by power line plugs of a plurality of groups of cold light exit signs and cold light emergency lamps. The centralized control box further comprises: a battery; a micro control unit connected to the battery for detecting the battery regularly; a cold light element drive circuit connected to the micro control unit for performing drive under the control of the micro control unit. Each of the cold light emergency lamps and the cold light exit signs has a power line plug for inserting in a socket of the centralized control box so that the cold light emergency lamps and the cold light exit signs are electrically connected to the cold light element drive circuit. According to the present invention, a plurality of groups of cold light emergency lamps and cold light exit signs are separably integrated into a centralized control box so that not only the plurality of groups of cold light emergency lamps and cold light exit signs can be made a centralized control but also the volumes of the cold light emergency lamps and cold light exit signs can be greatly reduced and the cold light emergency lamps and cold light exit signs may be flexibly placed on any position in any angle according to emergent site.

Claims

1. A centralized control box comprising:

a plurality of sockets arranged on the body of the centralized control box for being inserted by power line plugs of a plurality of cold light exit signs and/or cold light emergency lamps;

a battery;

a cold light element drive circuit; and

a micro control unit connected to the battery for regularly detecting the battery at predetermined time and to the cold light element drive circuit for controlling the cold light element drive circuit;

wherein the cold light element drive circuit is electrically connected to the cold light exit signs and the cold light emergency lamps for driving the cold light exit signs and the cold light emergency lamps to emit light under the control of the micro control unit, when the power line plugs are inserted in the sockets.

2. The centralized control box according to claim 1, wherein:

the centralized control box is also provided with a testing switch, a fuse tube and indicating devices respectively for indicating the operation states of the mains voltage, the battery, the cold light exit signs and the cold light emergency lamps.

3. The centralized control box according to claim 2, wherein:

the micro control unit detects and controls the charge time and discharge time of the battery via a crystal oscillator, detects the voltage and current of each of the cold light exit signs and the cold light emergency lamps via an A/D converting circuit, indicates the cold light element operation state of each of the cold light exit signs and the cold light emergency lamps via the indicating light according to a preset program, regularly detects the battery and the cold light element operation condition via a read only memory storing a timing program and controls the cold light element drive circuit at predetermined time.

4. The centralized control box according to claim 2, wherein:

the battery is a nickel-cadmium battery or a nickel-metal hydride battery; and

the indicating device is a LED or a backlight liquid crystal display unit.

5. The centralized control box according to claim 1, wherein:

the cold light element drive circuit is an IC type DC-AC converting circuit.

6. The centralized control box according to claim 5, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a large electroluminescent sheet, which directly rectifies the mains voltage to an AC voltage of 100-120V and 400-600 Hz so as to drive the large electroluminescent sheet to emit light.

7. The centralized control box according to claim 5, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a medium electroluminescent sheet, which converts a DC voltage to a positive-negative symmetrical AC voltage of 80-100v and 400-600 Hz so as to drive the medium electroluminescent sheet to emit light.

8. The centralized control box according to claim 5, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a small electroluminescent sheet, which converts a DC voltage to a positive AC voltage of approximately triangular with a voltage peak of 100-130V and a frequency of 400-600 Hz so as to drive the small electroluminescent sheet to emit light.

9. The centralized control box according to claim 5, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a LED, which converts a low DC voltage to a voltage that is suitable for driving LED to emit light with a high chopping frequency of above 20 kHz.

10. A cold light exit sign, comprising:

a power line plug used for inserting in a socket of a centralized control box so as to electrically connect the cold light exit sign with a cold light element drive circuit in the centralized control box;

wherein the cold light exit sign does not comprise any other electronic parts except for cold light elements.

11. The cold light exit sign according to claim 10, wherein:

the cold light exit sign includes a sign plate carrying the power line plug, and a light baffle-board with a plurality of LEDs arranged behind the sign plate.

12. The cold light exit sign according to claim 11, wherein:

said plurality of LEDs are arranged in a row on an upper side or a lower side of the light baffle-board if the area of the cold light exit sign is small.

13. The cold light exit sign according to claim 11, wherein:

said plurality of LEDs are arranged in two rows respectively on an upper side and a lower side of the light baffle-board if the area of the cold light exit sign is medium.

14. The cold light exit sign according to claim 11, wherein:

said plurality of LEDs are arranged in four rows respectively on an upper side, a lower side and two sides of the light baffle-board if the area of the cold light exit sign is large.

15. The cold light exit sign according to claim 10, wherein:

the luminescent portion of the cold light exit sign is an electroluminescent sheet with the power line plug.

16. The cold light exit sign according to claim 15, wherein:

the electroluminescent sheet is printed with one of pattern and character made from an electroluminescent powder or their combination.

17. A cold light emergency lamp, comprising:

a power line plug used for inserting in a socket of a centralized control box so as to electrically connect the cold light emergency lamp with a cold light element drive circuit in the centralized control box;

wherein the cold light emergency lamp does not comprise any other electronic parts except for cold light elements.

18. The cold light emergency lamp according to claim 17, wherein:

the cold light emergency lamp is provided with only a LED encapsulation.

19. The cold light emergency lamp according to claim 18, wherein:

the LED encapsulation includes a LED directly spot-welded on a circuit board in the form of a chip and enveloped with a phosphor powder and a transparent epoxy resin therein.

20. An apparatus integrated with cold light emergency lamp and cold light exit sign, comprising:

a centralized control box including a plurality of sockets arranged on the body thereof for being inserted by power line plugs of one or more of cold light exit signs and/or one or more of cold light emergency lamps;

a battery;

a cold light element drive circuit; and

a micro control unit connected to the battery for regularly detecting the battery at predetermined time and to the cold light element drive circuit for controlling the cold light element drive circuit; and

one or more groups of cold light emergency lamps and cold light exit signs placed on the area away from the centralized control box and carrying power line plugs for inserting in sockets of the centralized control box, wherein the cold light emergency lamps and the cold light exit signs do not comprise any other electronic parts except for cold light elements;

wherein the cold light element drive circuit is electrically connected to the cold light exit signs and the cold light emergency lamps for driving the cold light exit signs and the cold light emergency lamps to emit light under the control of the micro control unit, when the power line plugs are inserted in the sockets.

21. The apparatus according to claim 20, wherein:

the centralized control box is also provided with a testing switch, a fuse tube and indicating devices respectively for indicating operation states of the mains voltage, the battery, and the cold light exit signs and the cold light emergency lamps.

22. The apparatus according to claim 21, wherein:

the micro control unit detects and controls the charge time and discharge time of the battery via a crystal oscillator, detects the voltage and current of each of the cold light exit signs and the cold light emergency lamps via an A/D converting circuit, indicates the cold light element operation state of each of the cold light exit signs and the cold light emergency lamps via the indicating light according to a preset program, regularly detects the battery and the cold light element operation condition via a read only memory storing a timing program and controls the cold light element drive circuit at predetermined time.

23. The apparatus according to claim 21, wherein:

the battery is a nickel-cadmium battery or a nickel-metal hydride battery; and

the indicating device is a LED or a backlight liquid crystal display unit.

24. The apparatus according to claim 20, wherein:

the cold light element drive circuit is an IC type DC-AC converting circuit.

25. The apparatus according to claim 24, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a large electroluminescent sheet, which directly rectifies the mains voltage to an AC voltage of 100-120V and 400-600 Hz so as to drive the large electroluminescent sheet to emit light.

26. The apparatus according to claim 24, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a medium electroluminescent sheet, which converts a DC voltage to a positive-negative symmetrical AC voltage of 80-100v and 400-600 Hz so as to drive the medium electroluminescent sheet to emit light.

27. The apparatus according to claim 24, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a small electroluminescent sheet, which converts a DC voltage to a positive AC voltage of approximately triangular with a voltage peak of 100-130V and a frequency of 400-600 Hz so as to drive the small electroluminescent sheet to emit light.

28. The apparatus according to claim 24, wherein:

the IC type DC-AC converting circuit is an integrated circuit for driving a LED, which converts a low DC voltage to a voltage that is suitable for driving LED to emit light with a high chopping frequency of above 20 kHz.

29. The apparatus according to claim 20, wherein:

the cold light exit sign includes a sign plate carrying the power line plug and a light baffle-board with a plurality of LEDs arranged behind the sign plate.

30. The apparatus according to claim 29, wherein:

said plurality of LEDs are arranged in a row on an upper side or a lower side of the light baffle-board if the area of the cold light exit sign is small.

31. The apparatus according to claim 29, wherein:

said plurality of LEDs are arranged in two rows respectively on an upper side and a lower side of the light baffle-board if the area of the cold light exit sign is medium.

32. The apparatus according to claim 29, wherein:

said plurality of LEDs are arranged in four rows respectively on an upper side, a lower side and two sides of the light baffle-board if the area of the cold light exit sign is large.

33. The apparatus according to claim 20, wherein:

the luminescent portion of the cold light exit sign is an electroluminescent sheet with the power line plug.

34. The apparatus according to claim 33, wherein:

the electroluminescent sheet is printed with one of pattern and character made from an electroluminescent powder or their combination.

35. The apparatus according to claim 34, wherein:

the cold light emergency lamp is provided with only a LED encapsulation.

36. The apparatus according to claim 35, wherein:

the LED encapsulation includes a LED directly spot-welded on a circuit board in the form of chip and enveloped with a phosphor powder and a transparent epoxy resin therein.