# US 11,299,092 B2 · Indoor illumination lamp

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- Number: US 11,299,092 B2
- Document ID: US11299092B2
- Status: Granted
- Kind: B2
- Application number: 16/001,314
- Filed: 2018-06-06
- Published: 2018-12-20
- Granted: 2022-04-12
- Earliest claimed: 2017-06-15
- Assignees: Yazaki Corporation
- Applicants: Yazaki Corporation
- Inventors: Takayuki Ikeda; Ken Suzuki
- Web page: https://patentgrep.com/patent/US11299092B2

## CPC

- B60Q 3/60: characterised by optical aspects
- B60Q 3/51: for mounting lighting devices onto vehicle interior, e.g. onto ceiling or floor
- B60Q 3/64: for a single lighting device
- B60Q 3/74: for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps (general lighting mounted on specific fittings B60Q3/20; general lighting for mass transit vehicles B60Q3/43)
- B60Q 3/76: for spotlighting, e.g. reading lamps (spotlighting on or for specific fittings B60Q3/20; spotlighting in mass transit vehicles B60Q3/44)
- B60Q 3/82: Switches specially adapted for vehicle interior lighting, e.g. switching by tilting the lens
- 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)}
- F21V 7/05: plane
- F21W 2106/00: Interior vehicle lighting devices
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS

## Abstract

An indoor illumination lamp includes a housing to be attached to an interior ceiling of a vehicle and provided with an opening, an interior light lens arranged at the opening of the housing, a chamber provided in the housing and surrounding the opening where the interior light lens is arranged, a light emitting diode arranged at a corner of the chamber and capable of emitting light toward the interior light lens, and a reflector arranged on an inner face in the chamber.

## Claims

### Claim 1

An indoor illumination lamp, comprising:
a housing attached to an interior ceiling of a vehicle and provided with an opening;
a lens arranged at the opening of the housing;
a chamber provided in the housing and surrounding the opening where the lens is arranged;
a light emitting diode arranged at a corner of the chamber so as to face the lens and configured to directly emit light toward the lens; and
a reflector, independent of, and spaced apart from the housing, and arranged and fixed on an inner face in the chamber, the reflector configured to introduce light emitted to the reflector from the light emitting diode toward the lens.

### Claim 2 (depends on 1)

The indoor illumination lamp according to claim 1, wherein the reflector comprises a flat face part parallel to a plane of the lens, in an area of a ceiling face close to the light emitting diode, and an inclined face part inclined with respect to the plane of the lens, in an area of the ceiling face far from the light emitting diode.

### Claim 3 (depends on 1)

The indoor illumination lamp according to claim 1, wherein the reflector is arranged over an entire inner face of the chamber.

### Claim 4 (depends on 2)

The indoor illumination lamp according to claim 2, wherein
the reflector is arranged over an entire inner face of the chamber.

### Claim 5 (depends on 2)

The indoor illumination lamp according to claim 2, wherein
the reflector comprises a surrounding rib on an outer face of the inclined face part.

### Claim 6 (depends on 1)

The indoor illumination lamp according to claim 1, wherein
the light emitting diode is offset from a center of the chamber.