# US 12,222,516 B2 · Picture generating unit for a head-up display

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- Number: US 12,222,516 B2
- Document ID: US12222516B2
- Status: Granted
- Kind: B2
- Application number: 18/396,921
- Filed: 2023-12-27
- Published: 2024-09-12
- Granted: 2025-02-11
- Earliest claimed: 2023-03-10
- Assignees: Hyundai Mobis Co., Ltd.
- Applicants: Hyundai Mobis Co., Ltd.
- Inventors: Byung Ki Kim; Yu Jin Shin
- Web page: https://patentgrep.com/patent/US12222516B2

## CPC

- G02B 27/0176: {characterised by mechanical features}
- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- G02B 27/0149: {characterised by mechanical features (G02B27/0176 takes precedence)}
- H05K 1/0203: {Cooling of mounted components (H05K1/0272 takes precedence)}
- G02B 2027/013: {comprising a combiner of particular shape, e.g. curvature}
- H05K 2201/10106: Light emitting diode [LED]
- H05K 2201/10136: Liquid Crystal display [LCD]
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A picture generating unit for a head-up display, the picture generating unit being coupled to a sidewall or a lower surface of a lower case of the head-up display, the picture generating unit comprising: a backlight unit configured to be coupled to both a one-mirror type head-up display and a two-mirror type head-up display.

## Claims

### Claim 1

A picture generating unit for a head-up display, the picture generating unit being coupled to a sidewall or a lower surface of a lower case of the head-up display, the picture generating unit comprising:
a backlight unit configured to be coupled to a one-mirror type head-up display or a two-mirror type head-up display, wherein the backlight unit includes:
an LED PCB including a plurality of light sources;
a funnel reflector configured to condense light emitted from the LED PCB toward an LCD;
an LCD cover disposed between the LCD and the funnel reflector and snap-fitted to the LCD; and
a heat sink including an accommodation portion that is configured to accommodate at least some of the funnel reflector, the LED PCB, and the LCD cover, and a flange portion coupled to the lower case.

### Claim 2 (depends on 1)

The picture generating unit of claim 1, wherein the flange portion has a symmetrical shape structure.

### Claim 3 (depends on 2)

The picture generating unit of claim 2, wherein the flange portion include:
at least one first locator forming a face protruded in a z-direction by a predetermined height on the flange portion and configured to restrict linear motion of the picture generating unit in at least one direction;
a second locator configured to restrict linear motion of the picture generating unit in at least four directions; and
a third locator configured to restrict linear motion of the picture generating unit in at least two directions.

### Claim 4 (depends on 1)

The picture generating unit of claim 1, wherein the funnel reflector has an erroneous assembly prevention structure configured to prevent misassembly between the one-mirror type head-up display and the two-mirror type head-up display.

### Claim 5 (depends on 4)

The picture generating unit of claim 4, wherein the erroneous assembly prevention structure includes an erroneous assembly prevention hole formed at a corner of a lower surface of the funnel reflector.

### Claim 6 (depends on 5)

The picture generating unit of claim 5, wherein the erroneous assembly prevention hole is coupled to a forward boss formed on a forward jig when the picture generating unit is coupled to the one-mirror type head-up display, and is coupled to a reverse boss formed on a reverse jig when the picture generating unit is coupled to the two-mirror type head-up display.

### Claim 7 (depends on 6)

The picture generating unit of claim 6, wherein the funnel reflector is coupled to the accommodation portion in a forward orientation or in a reverse orientation rotated 180° with respect to the forward orientation, thereby allowing the picture generating unit to be used in both the one-mirror type head-up display and the two-mirror type head-up display.

### Claim 8 (depends on 1)

The picture generating unit of claim 1, wherein the LCD cover includes an LCD seating portion in which the LCD is seated, and the LCD seating portion is formed at a predetermined angle on the sidewall or the lower surface of the lower case.