US-12618539-B2 - Lighting device for vehicle

US12618539B2US 12618539 B2US12618539 B2US 12618539B2US-12618539-B2

Abstract

Provided is a lighting device for a vehicle including a light source configured to emit light, a shield layer configured to be positioned in front of the light source, and have a shield portion that shields light emitted from the light source and a first pattern portion through which the light emitted from the light source is transmitted, and a pattern layer configured to be positioned in front of the shield layer, include a light-transmissive material, and have a second pattern portion.

Inventors

Min Ji Kim
Do Hyung Kim
Phil Su Kim

Assignees

HYUNDAI MOBIS CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20241002
Priority Date: 20240805

Claims (15)

1 . A lighting device for a vehicle, comprising: a light source configured to emit light; a shield layer positioned in front of the light source and having a first geometric pattern, wherein the shield layer includes a plurality of first boundary lines defining a first geometric shape arranged repeatedly to form the first geometric pattern, and is configured to shield the light emitted from the light source except for the light emitted to the plurality of first boundary lines; and an optical pattern film positioned in front of and separate from the shield layer, including a light-transmissive material, and having second and third geometric patterns superposing each other to create a three-dimensional (3D) image when the light emitted from the light source transmitted to the optical pattern through the plurality of first boundary lines of the shield layer, wherein the optical pattern film includes: a plurality of second boundary lines defining a second geometric shape arranged repeatedly to form the second geometric pattern, wherein the second geometric shape is different from the first geometric shape, and the plurality of second boundary lines is arranged offset from the plurality of the first boundary lines of the shield layer to avoid overlapping the plurality of the first boundary lines; and a plurality of third boundary lines defining a third geometric shape arranged repeatedly to form a third geometric pattern, wherein the third geometric shape is identical to the first geometric shape, and the plurality of third boundary lines is aligned with the plurality of first boundary lines of the shield layer to overlap the plurality of the first boundary lines.
2 . The lighting device of claim 1 , further comprising a color layer positioned between the shield layer and the optical pattern film and including a light-transmissive material.
3 . The lighting device of claim 2 , wherein: the color layer includes a film, and the film and a vehicle body of the vehicle have a same color.
4 . The lighting device of claim 2 , wherein: the color layer includes a film coated with paint, and the paint and a vehicle body of the vehicle have a same color.
5 . The lighting device of claim 1 , further comprising a cover positioned in front of the optical pattern film and covering the optical pattern film, the cover including a transparent material.
6 . The lighting device of claim 1 , wherein the second and third geometric patterns are externally visible.
7 . The lighting device of claim 1 , further comprising a housing configured to house the light source, the shield layer, and the optical pattern film, the housing mounted on a grille provided on a front surface portion of a vehicle body of the vehicle.
8 . A lighting device for a vehicle, comprising: a light source configured to emit light; a shield layer positioned in front of the light source and having a first geometric pattern, wherein the shield layer includes a plurality of first boundary lines defining a first geometric shape arranged repeatedly to form the first geometric pattern, and is configured to shield the light emitted from the light source except for the light emitted to the plurality of first boundary lines; an optical pattern film positioned in front of and separate from the shield layer, including a light-transmissive material, and having second and third geometric patterns superposing each other to create a three-dimensional (3D) image when the light emitted from the light source transmitted to the optical pattern through the plurality of first boundary lines of the shield layer; and a cover positioned between the shield layer and the optical pattern film and covering the shield layer, the cover including a transparent material, wherein the optical pattern film includes: a plurality of second boundary lines defining a second geometric shape arranged repeatedly to form the second geometric pattern, wherein the second geometric shape is different from the first geometric shape, and the plurality of second boundary lines is arranged offset from the plurality of the first boundary lines of the shield layer to avoid overlapping the plurality of the first boundary lines; and a plurality of third boundary lines defining a third geometric shape arranged repeatedly to form a third geometric pattern, wherein the third geometric shape is identical to the first geometric shape, and the plurality of third boundary lines is aligned with the plurality of first boundary lines of the shield layer to overlap the plurality of the first boundary lines.
9 . The lighting device of claim 8 , further comprising a color layer positioned between the cover and the optical pattern film, the color layer including a light-transmissive material.
10 . The lighting device of claim 9 , wherein: the color layer includes a film, and the film and a vehicle body of the vehicle have a same color.
11 . The lighting device of claim 9 , wherein: the color layer includes a film coated with paint, and the paint and a vehicle body of the vehicle have a same color.
12 . The lighting device of claim 8 , wherein the second and third geometric patterns are externally visible.
13 . The lighting device of claim 8 , further comprising a polyurethane coating disposed on a front surface of the optical pattern film.
14 . The lighting device of claim 8 , further comprising a housing configured to house the light source, the shield layer, the optical pattern film, and the cover, the housing mounted on a bumper of a vehicle body of the vehicle.
15 . The lighting device of claim 8 , further comprising a housing configured to house the light source, the shield layer, the optical pattern film, and the cover, the housing mounted on a grille provided on a front surface portion of a vehicle body of the vehicle.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from and the benefit under 35 USC § 119 of Korean Patent Application No. 10-2024-0104147, filed on Aug. 5, 2024, 2024, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated by reference for all purposes. TECHNICAL FIELD Exemplary embodiments of the present disclosure relate to a lighting device for a vehicle, and more particularly, to a lighting device for a vehicle capable of implementing grille lighting. BACKGROUND In recent years, vehicle manufacturers have been attempting to fill the reduced visual density of front surfaces of electric vehicles by creating differentiated lighting images, making an effort to add new value through unexpected effects in the space where the grille of electric vehicles has disappeared, and investing heavily in 3D stereoscopic grille lighting for eye-catching visual effects. Conventionally, there have been limitations in grille lighting content and technological implementation solutions that effectively express brand identity. As the lighting area expands to include the grille, various issues have arisen, including increased development and production costs, as well as weight gain due to the use of multiple lighting devices. Therefore, these limitations and issues require improvement. The related art of the present disclosure is disclosed in Korean Patent Application Publication No. 10-2023-0077201 (published on Jun. 1, 2023 and entitled “The lighting grill for the electric vehicle”). SUMMARY Various embodiments of the present disclosure are directed to a lighting device for a vehicle capable of providing a three-dimensional image to drivers, surrounding vehicles, and pedestrians by implementing grille lighting. A lighting device for a vehicle according to an aspect of the present disclosure includes: a light source configured to emit light; a shield layer configured to be positioned in front of the light source, and have a shield portion that shields light emitted from the light source and a first pattern portion through which the light emitted from the light source is transmitted; and a pattern layer configured to be positioned in front of the shield layer, include a light-transmissive material, and have a second pattern portion. The lighting device for a vehicle according to an aspect of the present disclosure may further include a color layer configured to be positioned between the shield layer and the pattern layer and include a light-transmissive material. The color layer may include a film having the same color as a vehicle body. The color layer may include a film coated with paint having the same color as the vehicle body. The lighting device for a vehicle according to an aspect of the present disclosure may further include a cover configured to be positioned in front of the pattern layer to cover the pattern layer and made of a transparent material. The second pattern portion may include a three-dimensional pattern externally visible from the outside. The first pattern portion may be positioned to overlap with the second pattern portion. The lighting device for a vehicle according to an aspect of the present disclosure may further include a housing configured to house the light source, the shield layer, and the pattern layer therein and be mounted on a grille provided on a front surface portion of the vehicle body. A lighting device for a vehicle according to another aspect of the present disclosure may include: a light source configured to emit light; a shield layer configured to be positioned in front of the light source, and have a shield portion that shields light emitted from the light source and a first pattern portion through which the light emitted from the light source is transmitted; a pattern layer configured to be positioned in front of the shield layer, include a light-transmissive material, and have a second pattern portion; and a cover configured to be positioned between the shield layer and the pattern layer to cover the shield layer and made of a transparent material. The lighting device for a vehicle according to another aspect of the present disclosure may further include a color layer configured to be positioned between the cover and the pattern layer and include a light-transmissive material. The color layer may include a film having the same color as a vehicle body. The color layer may include a film coated with paint having the same color as the vehicle body. The second pattern portion may include a three-dimensional pattern externally visible from the outside. The first pattern portion may be positioned to overlap with the second pattern portion. The pattern layer may have a polyurethane coating on a front surface of the pattern layer. The lighting device for a vehicle according to another aspect of the present disclosure may further include a housing configured to house the light source, the shield layer, the pattern layer, and the co