# US 11,079,084 B2 · Direct-type automobile headlamp module and automobile headlamp

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- Number: US 11,079,084 B2
- Document ID: US11079084B2
- Status: Granted
- Kind: B2
- Application number: 16/328,715
- Filed: 2017-07-26
- Published: 2019-09-12
- Granted: 2021-08-03
- Earliest claimed: 2016-08-31
- Assignees: Hasco Vision Technology Co., Ltd.
- Applicants: Hasco Vision Technology Co., Ltd.
- Inventors: Le Xie
- Web page: https://patentgrep.com/patent/US11079084B2

## CPC

- F21S 41/265: Composite lenses; Lenses with a patch-like shape
- F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device
- F21S 41/37: characterised by their material, surface treatment or coatings
- F21S 45/48: with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
- F21W 2102/135: the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
- F21Y 2115/10: Light-emitting diodes [LED]
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- 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 direct-type vehicle headlamp module, including a radiator, a light-emitting diode (LED) chip, and a lens, the radiator and the lens are fixed to form an accommodating cavity for accommodating the LED chip, the LED chip is fixed on the radiator, a light ray emitted by the LED chip is directly emitted through the lens, an outer surface of the lens is divided into three areas, curved surface shapes of outer surfaces of the areas are different from each other, a curved surface shape corresponding to a first area is configured to form a cut-off line shape, a curved surface shape corresponding to a second area is configured to increase brightness of a central area of a light shape, and a curved surface shape corresponding to a third area is configured to broaden the light shape. Transmission and emergence directions of the light ray having different curved surface shapes to form the cut-off line shape.

## Claims

### Claim 1

A direct-type vehicle headlamp module; comprising:
a radiator (2), a light-emitting diode (LED) chip (4), and a lens (3);
the radiator (2) and the lens (3) are fixed to form an accommodating cavity for accommodating the LED chip (4), the LED chip (4) is fixed on the radiator (2), a light ray emitted by the LED chip (4) is directly emitted through the lens (3);
an outer surface of the lens (3) is divided into a first area (31), a second area (32), and a third area (33) by two intersection lines that perpendicularly intersect with each other, the first area (31) is an upper left one-quarter outer surface defined by the two intersection lines, the second area (32) is an upper right one-quarter outer surface defined by the two intersection lines, and the third area (33) is a lower-half outer surface defined by the two intersection lines, an intersection point of the two intersection lines is located on an optical axis of a light ray emitted by the LED chip (4);
each curved surface shape of the first, second and third areas are different from each other, the curved surface shape corresponding to a first area (31) is configured to form a cut-off line shape, the curved surface shape corresponding to a second area (32) is configured to increase brightness of a central area of a light shape, and the curved surface shape corresponding to a third area (33) is configured to broaden the light shape.

### Claim 2 (depends on 1)

The direct-type vehicle headlamp module as in claim 1, wherein the third area (33) is a left-right symmetric structure.

### Claim 3 (depends on 1)

The direct-type vehicle headlamp module as in claim 1, wherein the radiator (2) is provided with a boss (22) for reflecting light below and on one side of a position at which the LED chip is fixed.

### Claim 4 (depends on 3)

The direct-type vehicle headlamp module as in claim 3, wherein a top surface of the boss (22) is an inclined plane sloping downward in a direction extending toward the lens (3).

### Claim 5 (depends on 4)

The direct-type vehicle headlamp module as in claim 4, wherein the inclined plane and a vertical inner surface of the lens (3) form an angle of 45° to 55°.

### Claim 6 (depends on 3)

The direct-type vehicle headlamp module as in claim 3, wherein a top surface of the boss (22) is plated with aluminum.

### Claim 7 (depends on 1)

The direct-type vehicle headlamp module as in claim 1, wherein the radiator (2) is provided with a plurality of heat dissipation fins (21) distributed at intervals.

### Claim 8 (depends on 1)

A vehicle headlamp, using the direct-type vehicle headlamp module as in claim 1.