Illuminating Device

• US 20080192476A1
• Filed: 08/29/2006
• Published: 08/14/2008
• Est. Priority Date: 08/30/2005
• Status: Active Grant

• Current Assignee: Kabushikikaisha Mirai
• Original Assignee: Kabushikikaisha Mirai
• Inventors: Hiratsuka, Toshio
• Granted Patent: US 7,547,126 B2
• Time in Patent Office: Days
• US Class Current: 362/285
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21S 8/08 with a standard F21S6/00 takes precedence
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 21/26 Pivoted arms
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 7/0083 Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane combination of two or more reflectors F21V7/0025
• CPC Class Codes: F21V 7/05 plane
• CPC Class Codes: F21V 7/06 with parabolic curvature
• CPC Class Codes: F21V 7/09 with a combination of different curvatures
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

An illuminating device of the invention is an illuminating device which can eliminate an illumination in an unnecessary direction, and selectively illuminate a necessary desired area.

An illuminating device 100 in which an illumination direction is freely changeable, includes: a light source portion 15 including: a light emitter having a plurality of light emitting diodes installed on a base; a first reflector formed of parabolic surfaces which are provided on a light emergence side of the light emitter in such a way as to correspond to the plurality of light emitting diodes, and light emitting faces of which fall in focal positions; and a second reflector having a pair of flat plate-like reflecting surfaces which, being arranged with the light emitting diodes sandwiched therebetween, farther to the light emergence side than the first reflector and parallel to an array direction of the light emitting diodes, reflect light from the light emitting diodes toward the light emergence side; an arm 17 which supports the light source portion on one end thereof; and a light source support 13 which rotatably supports the other end of the arm 17.

Claims

1. An illuminating device in which an illumination direction is freely changeable, comprising:

a light source portion that comprises;

a light emitter having a base and a plurality of light emitting diodes installed on the base;

a first reflector formed of parabolic surfaces that are provided for each of the light emitting diodes on a light emergence side, each of the parabolic surfaces having a focal position being set at a light emitting face of the respective light emitting diodes; and

a second reflector having a pair of flat plate-like reflecting surfaces being arranged with the light emitting diodes sandwiched therebetween, the second reflector being disposed farther to the light emergence side than the first reflector and parallel to an array direction of the light emitting diodes, and the second reflector reflecting light from the light emitting diodes toward the light emergence side;

an arm that is attached to the light source portion at one end of the arm; and

a light source support that rotatably supports the other end of the arm.

2. The illuminating device according to claim 1, wherein a plurality of lamp units each including the light source portion and the arm are supported on the light source support.

3. The illuminating device according to claim 1, wherein the light source portion is supported to be pivotable with respect to an axis of the arm, and

wherein a light irradiation direction of the light source portion is configured to be variable by pivoting the light source portion.

4. The illuminating device according to claim 1, further comprising a casing that surrounds a periphery of the light source portion, the casing having a transparent window being provided on the light emergence side of the light source portion.

5. The illuminating device according to claim 1, further comprising a joint that detachably connects the light source portion and the arm.

6. An illuminating device according to claim 1, wherein at least one of the reflecting surfaces of the first reflector and the second reflector is formed into a satin-finished surface.