Luminaire and drawer device

Patent metadata

Field	Value
Publication number	US-10149534-B2
Application number	US-201515529768-A
Country	US
Kind code	B2
Filing date	Nov 20, 2015
Priority date	Nov 28, 2014
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

A luminaire is provided with a light source, and a light guide which is positioned in front of the light source. The light guide includes a first surface portion formed on the light source side, and a second surface portion formed on a side opposite the first surface portion. The first surface portion is constituted by a flat surface, and the second surface portion is constituted by an inclined surface which intersects at an angle other than a right angle against the optical axis of the light source. An angle formed between the inclined surface and the optical axis on the side of the light source is smaller on a center side of the second surface portion positioned on the optical axis, and is larger on a peripheral side of the second surface portion.

First claim

The invention claimed is:

1. A luminaire comprising:
a light source; and
a light guide positioned in front of the light source, and including a first surface portion formed on a light source side, and a second surface portion formed on a side opposite to the first surface portion,
wherein the first surface portion includes a flat surface portion, and
the second surface portion includes a recess portion symmetrically recessed with respect to a center line of the recess portion intersecting with an optical axis of the light source, and having first inclined surfaces, each of the first inclined surfaces linearly and outwardly extending from the center line and inclined at a first inclined angle with respect to the optical axis of the light source, and second inclined surfaces, each of the second inclined surfaces continuously and linearly extending from each of the first inclined surfaces to each of two side ends of the recess portion and inclined at a second inclined angle different from the first inclined angle with respect to the optical axis of the light source.

2. The luminaire according to claim 1 , wherein the light guide further comprises an emission part formed at an upper portion of the light guide on a side of the second surface portion and extending in a length direction intersecting with the center line of the recess portion, and
the recess portion is located under the emission part.

3. The luminaire according to claim 1 , wherein the recess portion is symmetrical with a plane including the center line of the recess portion.

4. The luminaire according to claim 1 , wherein the second surface portion further includes a plurality of inclined surfaces which has inclined angles different from each other with respect to the optical axis of the light source.

5. A drawer device constituting an interior component of an automobile, comprising:
the luminaire according to claim 1 ,
a drawer body, and
an elongated display formed on a front surface of the drawer body and emitted by an emission part of the light guide.

6. The drawer device according to claim 5 , wherein the drawer body includes a lid portion arranged at the front surface of the drawer body and having the elongated display, and a support member attached to the lid portion at a rear side of the lid portion and having a plurality of holes at a rear surface of the support member; and the luminaire is attached to a rear surface of the elongated display, and light from the light source emits the plurality of holes when the drawer body is pulled out, and
the center line of the recess portion is inclined with respect to the optical axis of the light source such that light from the light source is obliquely incident on the flat surface portion of the first surface portion.

7. The luminaire according to claim 1 , wherein the light guide is arranged at a position apart from the light source, and the first inclined angle is larger than the second inclined angle with respect to the optical axis of the light source.

8. The luminaire according to claim 1 , wherein the light guide further comprises an emission part projecting outwardly from the second surface portion above the recess portion, and the recess portion has an upper end portion inclined outwardly in a direction approaching the emission part.

9. The luminaire according to claim 8 , wherein the light guide further comprises a raised portion projecting outwardly from the first surface portion at a position corresponding to the emission part in a direction opposite to the emission part, and the flat surface portion is arranged under the raised portion.

10. The luminaire according to claim 1 , wherein the center line of the recess portion is inclined with respect to the optical axis of the light source such that light from the light source is obliquely incident on the flat surface portion of the first surface portion.

Assignees

• Nifco Inc

Inventors

• Kyouyama Takashi

Classifications

• A47B88/00

  Drawers for tables, cabinets or like furniture; Guides for drawers (A47B63/02 takes precedence; drawers coupled to doors A47B96/16) · CPC title

• A47B97/00

  Furniture or accessories for furniture, not provided for in other groups of this subclass · CPC title

• B60N3/102

  storable or foldable in a non-use position · CPC title

• B60Q3/20

  for lighting specific fittings of passenger or driving compartments; mounted on specific fittings of passenger or driving compartments (lighting for dashboards B60Q3/10) · CPC title

• F21V23/00

  Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)} · CPC title