LED LIGHT SOURCE

• US 20180306395A1
• Filed: 04/19/2017
• Published: 10/25/2018
• Est. Priority Date: 04/19/2017
• Status: Abandoned Application

• Current Assignee: Omachron Intellectual Property Inc.
• Original Assignee: Omachron Intellectual Property Inc.
• Inventors: Conrad, Wayne Ernest
• Application Number:
  US15/491,273
• Publication Number:
  US 20180306395A1
• Time in Patent Office: Days
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/61 using light guides
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 21/0824 Ground spikes
• CPC Class Codes: F21V 23/0471 the sensor detecting the proximity, the presence or the movement of an object or a person
• CPC Class Codes: F21V 33/0012 Furniture hospital beds F21V33/0072
• CPC Class Codes: F21V 33/0032 Paintings, pictures or photographs; Frames therefor
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/90 on two opposite sides of supports or substrates
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0035 provided on the surface of the light guide or in the bulk of it
• CPC Class Codes: G02B 6/0051 Diffusing sheet or layer
• CPC Class Codes: G02B 6/0075 Arrangements of multiple light guides G02B6/0028 takes precedence
• CPC Class Codes: G02B 6/0078 Side-by-side arrangements, e.g. for large area displays
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/0085 Means for removing heat created by the light source from the package heat extraction or cooling elements for semiconductor light sources in general H01L33/64
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence

Abstract

A LED light source includes a longitudinally extending light guide, and a power supply. The light guide has a first end face and a longitudinally spaced apart second end face and at least one LED provided at the first end face. The power supply includes a plurality of batteries operatively connected to the at least one LED in a first mode, in which the power supply provides a first power to the at least one LED, and a second mode in which the power supply provides a second power different to the first power to the at least one LED.

Claims

1. A LED light source comprising:

(a) a longitudinally extending light guide having a first end face and a longitudinally spaced apart second end face and at least one LED provided at the first end face;

(b) a power supply comprising a plurality of batteries operatively connected to the at least one LED in a first mode in which the power supply provides a first power to the at least one LED and a second mode in which the power supply provides a second power different to the first power to the at least one LED.

2. The LED light source of claim 1 wherein, in the first mode, two or more of the batteries are connected in series.

3. The LED light source of claim 2 wherein, in the second mode, two or more of the batteries are connected in parallel.

4. The LED light source of claim 1 wherein the plurality of batteries comprise a first battery and a second battery and, in the first mode, the first and second batteries are connected in series.

5. The LED light source of claim 4 wherein, in the second mode, the first and second the batteries are connected in parallel.

6. The LED light source of claim 1 further comprising a circuit which includes a sensor and the power supply whereby, when the sensor senses a condition, the sensor issues a signal which causes the power supply to change from the first mode to the second mode.

7. The LED light source of claim 6 wherein the sensor comprises a motion sensor.

8. The LED light source of claim 6 wherein the sensor comprises a noise sensor.

9. The LED light source of claim 6 wherein the sensor comprises a light intensity sensor.

10. The LED light source of claim 1 further comprising a manually operable switch operatively connected to the power supply, the switch having a first position in which the power supply is in the first mode and a second position in which the power supply is in the second mode.

11. A LED light source comprising a circuit including a plurality of LEDs, wherein the LEDs are connected in parallel and each of the plurality of LEDs is individually electrically connected to the circuit by a meltable electrically conductive member.

12. The LED light source of claim 11 wherein the meltable electrically conductive member comprises fuse wire.

13. The LED light source of claim 11 wherein the meltable electrically conductive member melts at a temperature corresponding to a temperature produced by a current drawn by a failed LED through the meltable electrically conductive member.

14. The LED light source of claim 11 wherein the meltable electrically conductive member melts at a temperature above about 80 C.

15. The LED light source of claim 11 wherein the meltable electrically conductive member comprises fuse wire.