ILLUMINATION DEVICE

• US 20120212954A1
• Filed: 10/12/2010
• Published: 08/23/2012
• Est. Priority Date: 11/09/2009
• Status: Abandoned Application

• Current Assignee: Katayama Kogyo Co., Ltd.
• Original Assignee: Katayama Kogyo Co., Ltd.
• Inventors: Hirai, Hidenori, Kataoka, Noboru, Ohta, Hidemasa
• Application Number:
  US13/505,044
• Publication Number:
  US 20120212954A1
• Time in Patent Office: Days
• US Class Current: 362/223
• CPC Class Codes: E04F 11/1836 Handrails of balustrades; Connections between handrail members
• CPC Class Codes: E04F 2011/1872 illuminated
• CPC Class Codes: E04F 2011/1897 mainly of organic plastics with or without reinforcements or filling materials
• CPC Class Codes: F21S 4/22 flexible or deformable, e.g. into a curved shape
• CPC Class Codes: F21S 4/24 of ribbon or tape form, e.g. LED tapes
• CPC Class Codes: F21V 11/12 of slot type
• CPC Class Codes: F21V 15/013 the housing being an extrusion
• CPC Class Codes: F21V 19/005 by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound
• CPC Class Codes: F21V 33/006 General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21W 2111/08 for handles or handrails
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Provided is an illumination device capable of providing uniform illumination along a specific direction. The illumination device is provided with a shaped member which extends in a specific direction, which has an opening section that opens towards a front side in a front/rear direction perpendicular to the specific direction, and which has a curved shape that protrudes towards a rear side; a base member which has translucent properties and is accommodated inside the shaped member while being exposed to the outer side of the shaped member via the opening section of the shaped member; a covering member which has light blocking properties and covers at least a portion of a front side portion of the base member from the front; and light emission means. The light emission means are fixed inside a recess section of the base member so as to be separated from each other in the specific direction.

Claims

1. An illumination device, comprising:

a shaped member which extends in a specific direction, which has an opening section that opens towards a front side in a front/rear direction perpendicular to the specific direction, and which has a curved shape that protrudes towards a rear side;

a base member which has translucent properties and extends in the specific direction, at least a portion of the base member being accommodated inside the shaped member in a state where a front side portion of the base member is exposed to the outer side of the shaped member via the opening section of the shaped member;

a covering member which has light blocking properties, extends in the specific direction and is provided on the front side portion of the base member in a state of covering at least a portion of the front side portion of the base member from the front; and

a plurality of light emission members capable of emitting light,

wherein the base member has a rear end surface which extends in the specific direction and also has a recess section which is recessed to the front side from the rear end surface, and

the light emission members are fixed to an inner side of the recess section so as to be separated from each other in the specific direction.

2. The illumination device according to claim 1,

wherein an inner surface of the recess section has a vertical wall section extending in the front/rear direction, and

the light emission members are fixed to the vertical wall section.

3. The illumination device according to claim 1,

wherein an inner surface of the recess section has a lateral wall section which extends in a direction perpendicular to the specific direction and the front/rear direction, and

the light emission members are fixed to the lateral wall section in an attitude of irradiating light towards the rear side.

4. The illumination device according to claim 1, wherein the covering member is arranged at a position separated from the shaped member in the front/rear direction.

5. The illumination device according to claim 4, wherein the covering member covers the whole of the front side portion of the base member from the front.

6. The illumination device according to claim 5, wherein the shaped member is arranged in an attitude whereby the opening section thereof opens upwards and the covering member is arranged in an attitude of covering the whole of an upper side portion of the base member from above, such that the illumination device is used as a handrail.

7. The illumination device according to claim 4,

wherein the covering member is provided in plurality, and

the covering members are arranged substantially in parallel with each other at positions that are mutually separated in the front/rear direction.

8. The illumination device according to claim 1, wherein a plurality of opening holes which pass in the front/rear direction through a rear side surface of the shaped member are formed in the rear side surface at positions that are mutually separated in the specific direction.

9. The illumination device according to claim 8, wherein the shaped member is arranged in an attitude whereby the opening holes face downwards, such that the illumination device is used as a handrail.

10. The illumination device according to claim 8, wherein the opening holes of the shaped member connect to a space which is surrounded by the recess section.

11. The illumination device according to claim 8,

further comprising a protective member which closes off each of the opening holes of the shaped member,

wherein the protective member has translucent properties.

12. The illumination device according to claim 1,

further comprising a heat radiating member provided on an inner surface of the recess section and made of metal,

wherein the light emission members are fixed to the heat radiating member.

13. The illumination device according to claim 12, wherein the heat radiating member is arranged at a position contacting the shaped member.

14. The illumination device according to claim 1, wherein the base member is made of plastic.