# US 2025/0146641 A1 · Lighting tool for vehicle and vehicle rearward illumination system

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- Number: US 2025/0146641 A1
- Document ID: US20250146641A1
- Status: Published application
- Kind: A1
- Application number: 18/837,607
- Filed: 2023-02-09
- Published: 2025-05-08
- Earliest claimed: 2022-02-21
- Assignees: Stanley Electric Co., Ltd.
- Applicants: Stanley Electric Co., Ltd.
- Inventors: Takuya KAWAKAMI
- Web page: https://patentgrep.com/patent/US20250146641A1

## CPC

- F21S 41/663: by switching light sources (by switching incandescent light sources F21S41/162)
- B60Q 1/22: for reverse drive
- B60Q 1/24: for lighting other areas than only the way ahead
- B60Q 1/2607: {comprising at least two indicating lamps}
- F21S 41/148: the main emission direction of the LED being perpendicular to the optical axis
- F21S 41/24: Light guides
- F21S 41/32: Optical layout thereof
- F21S 43/14: Light emitting diodes [LED]
- F21S 43/19: Attachment of light sources or lamp holders
- F21S 43/239: plate-shaped
- F21S 43/243: emitting light from one or more of its extremities
- F21S 43/31: Optical layout thereof
- F21S 43/315: {using total internal reflection}
- F21S 43/50: characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
- F21V 7/04: Optical design
- F21V 7/06: with parabolic curvature
- F21V 23/00: Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)}
- G02B 6/00: Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- H05B 47/125: by using cameras
- F21W 2102/17: for regions other than high beam or low beam
- F21W 2103/45: Reversing lights
- F21Y 2115/10: Light-emitting diodes [LED]
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A lighting tool for a vehicle includes a first light emission unit that reflects first light emitted from a first light source using a reflector and emit the first light reflected by the reflector to a side behind a vehicle, and a second light emission unit configured to guide second light emitted from a second light source using a light guide lens and emit the second light guided by the light guide lens to a side behind the vehicle, the first light emission unit emits the first light toward the illumination range behind the vehicle, and the second light emission unit is disposed in plural in a vehicle width direction and selectively emits the second light for each of the illumination regions which are divided in the vehicle width direction so as to overlap the illumination range.

## Claims

### Claim 1

A lighting tool for a vehicle comprising:
a first light emission unit that includes a first light source and a reflector, and that is configured to reflect first light emitted from the first light source using the reflector and emit the first light reflected by the reflector rearward from a vehicle; and
a second light emission unit that includes a second light source and a light guide lens, and that is configured to guide second light emitted from the second light source using the light guide lens and emit the second light guided by the light guide lens rearward from the vehicle,
wherein any one of light emission unit of the first light emission unit and the second light emission unit illuminates an illumination range behind the vehicle with any one of the first light and the second light, and
other one of the light emission unit of the first light emission unit and the second light emission unit is disposed in plural in a vehicle width direction and selectively illuminates illumination regions, which are divided in the vehicle width direction so as to overlap the illumination range, with the other light of the first light and the second light.

### Claim 2 (depends on 1)

The lighting tool for a vehicle according to claim 1, wherein the one of the light emission unit is disposed in plural in the vehicle width direction and illuminates the illumination range with the one of the light.

### Claim 3 (depends on 1)

The lighting tool for a vehicle according to claim 1, comprising a substrate on which the first light source and the second light source are mounted,
wherein the reflector is disposed at a side where the first light source is located with respect to the substrate, and
the light guide lens is disposed at a side where the second light source is located with respect to the substrate.

### Claim 4 (depends on 1)

The lighting tool for a vehicle according to claim 1, wherein the one of the light emission unit is the first light emission unit, and
the other one of the light emission unit is the second light emission unit.

### Claim 5 (depends on 1)

A vehicle rearward illumination system configured to emit light rearward from a vehicle when the vehicle moves rearward, the vehicle rearward illumination system comprising:
the lighting tool for a vehicle according to claim 1;
a detection part configured to detect an obstacle behind the vehicle; and
a controller configured to control selective illumination of the illumination region where the obstacle is present with the other one of the light when the detection part detects the obstacle.

### Claim 6 (depends on 5)

The vehicle rearward illumination system according to claim 5, wherein the detection part includes an imaging part configured to image an image behind the vehicle, and detects the obstacle on the basis of the image imaged by the imaging part.