IP Library › Granted Patent US 8,573,803
Granted Patent B2
US 8,573,803 · App. 13/190,880 · Granted Nov 5, 2013

Illumination device

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Quick Facts
Patent No.
US 8,573,803
App. No.
13/190,880
Granted
Nov 5, 2013
Kind
B2
Abstract

An illumination device includes a housing having a light-emitting surface through which illumination light is irradiated and a plurality of LED units fixed to the housing in specified positions to emit the illumination light. The illumination device further includes a plurality of reflectors each having a reflection surface for reflecting the illumination light emitted from each of the LED units in a specified direction and a reflector attachment plate removably fixed to the housing. Each of the reflectors is adjustably attached to the reflector attachment plate in a specified orientation.

Claims (22)

1. An illumination device, comprising:

a housing having a light-emitting surface through which illumination light is irradiated;

a plurality of LED units fixed to the housing in specified positions to emit the illumination light;

a plurality of reflectors each having a reflection surface for reflecting the illumination light emitted from each of the LED units in a specified direction; and

a reflector attachment plate removably fixed to the housing, each of the reflectors being adjustably attached to the reflector attachment plate in a specified orientation.

2. The device of claim 1 , wherein the reflector attachment plate has reflector openings to which the reflectors are fitted partially.

3. The device of claim 1 , wherein the reflector attachment plate includes a reinforcing rib provided on an irradiation direction surface of the reflector attachment plate, the reinforcing ribs also serving as a louver.

4. The device of claim 2 , wherein the reflector attachment plate includes a reinforcing rib provided on an irradiation direction surface of the reflector attachment plate, the reinforcing ribs also serving as a louver.

5. An illumination device, comprising:

a housing having a light-emitting surface through which illumination light is irradiated;

a plurality of LED units for emitting the illumination light to be irradiated through the light-emitting surface;

a plurality of heat-dissipating LED attachment blocks fixed to the housing to hold the LED units in specified orientations, respectively; and

a plurality of heat-dissipating members through which the LED units are attached to the LED attachment blocks, respectively.

6. The device of claim 5 , further comprising:

a connection plate configured to interconnect and unify the heat-dissipating members.

7. An illumination device, comprising:

a housing having a light-emitting surface through which illumination light is irradiated;

at least one LED unit fixed to the housing in a specified position to emit the illumination light; and

a reflector having a curvilinear reflection surface for reflecting the illumination light emitted from the LED unit in a specified direction,

wherein the LED unit is arranged near a bottom portion of the reflector such that the angle θ between a major optical axis of the LED unit and a center axis of the LED unit extending toward a large opening of the reflector becomes smaller than 90 degrees.

8. The device of claim 7 , further comprising:

a reflection plate configured to reflect the illumination light, which is emitted from the LED unit but deviated from the reflector, in a specific direction.