# US 12,181,141 B2 · Forward cooling headlight

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- Number: US 12,181,141 B2
- Document ID: US12181141B2
- Status: Granted
- Kind: B2
- Application number: 18/111,584
- Filed: 2023-02-19
- Published: 2023-06-22
- Granted: 2024-12-31
- Earliest claimed: 2020-09-21
- Assignees: Matrix Railway Corporation
- Applicants: Matrix Railway Corporation
- Inventors: Nelson Rivas; Gary Provenzano
- Web page: https://patentgrep.com/patent/US12181141B2

## CPC

- B60Q 1/0094: {Arrangement of electronic circuits separated from the light source, e.g. mounting of housings for starter circuits for discharge lamps (arrangements being part of the light source holder F21V17/06, F21S43/195)}
- F21V 29/713: {in direct thermal and mechanical contact of each other to form a single system}
- F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device
- F21S 41/148: the main emission direction of the LED being perpendicular to the optical axis
- F21S 41/151: arranged in one or more lines
- F21S 41/192: {Details of lamp holders, terminals or connectors}
- 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
- F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858)
- F21V 29/508: of electrical circuits
- F21V 29/56: using liquid coolants (F21V29/51 takes precedence)
- F21S 41/43: characterised by the shape thereof
- F21S 45/50: Waterproofing
- F21Y 2115/10: Light-emitting diodes [LED]
- 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
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- 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

There is disclosed a forward cooling headlight comprising a body, a lens coupled to the body and a heatsink coupled to the body. There is also a heatpipe and at least one light. The light is coupled to the heatsink, wherein the heatpipe is coupled to the heatsink at a first end, and to the body at a second end. The heatsink draws heat away from the light, via the heatpipe and towards the body. There can be at least one synthetic jet coupled to the heatpipe to aid in cooling the light. In addition, in at least one embodiment, there can be at least two lights with at least two different drivers with a first driver driving a first light and a second driver driving a second light wherein when each of the lights is lit it is capable of generating a different focal point.

## Claims

### Claim 1

A forward cooling headlight comprising:
a body;
a lens coupled to said body;
a heatsink coupled to said body;
a heatpipe said heatpipe forming a continuous loop at having at least one fluid disposed in said heatpipe,
at least one synthetic jet coupled to said heatpipe said at least one synthetic jet for driving said at least one fluid inside said heatpipe continuously around said heatpipe so that said heatpipe forms a cooling pipe;
at least one light; and
wherein said at least one light is coupled to said heatsink, and wherein said heatpipe is coupled to said heatsink at a first end and to said body at a second end wherein said heatsink draws heat away from said light, and wherein said heatpipe draws heat away from said heatsink and towards said body.

### Claim 2 (depends on 1)

The forward cooling headlight as in claim 1, wherein said body has a first end which is adjacent to said heatsink and a second end which is coupled to said lens.

### Claim 3 (depends on 1)

The forward cooling headlight as in claim 1, further comprising at least one additional heatpipe.

### Claim 4 (depends on 3)

The forward cooling headlight as in claim 3, further comprising at least one additional synthetic jet coupled to said at least one additional heatpipe.

### Claim 5 (depends on 4)

The forward cooling headlight as in claim 4, wherein said heatpipe is a continuous heatpipe composed of a round first section and a second section, each contain fluid, wherein said at least one synthetic jet and said at least one additional synthetic jet are configured to move said fluid through said first and second sections of said heatpipe, respectively.

### Claim 6 (depends on 5)

The forward cooling headlight as in claim 5, wherein the synthetic jet has a bladder configured to expand or contract to drive the fluid through the heatpipe.

### Claim 7 (depends on 1)

The forward cooling headlight as in claim 1, wherein said body is substantially semi-spherical in shape.

### Claim 8 (depends on 7)

The forward cooling headlight as in claim 7, further comprising a circular rim coupled to the heatsink wherein said heatsink extends to an exterior region radially outside of said lens.

### Claim 9 (depends on 8)

The forward cooling headlight as in claim 8, further comprising at least one additional heatpipe, in communication with said first heatpipe, wherein said heatpipes form a thermally conductive closed loop system, and wherein the circular rim is coupled to at least one heatpipe and the additional heatpipe and wherein said at least one heatpipe and said at least one additional heatpipe each have a first section, and a second section, with said first section extending substantially transverse to said second section.

### Claim 10 (depends on 1)

The forward cooling headlight as in claim 1, further comprising at least one valve coupled to the heatpipe, wherein the at least one valve is a one-way valve.

### Claim 11 (depends on 1)

The forward cooling headlight as in claim 1, further comprising a plurality of light drivers, comprising a first light driver and a second light driver, and wherein the at least one light comprises at least two lights, comprising a first light and a second light, wherein said first light driver is configured to drive said first light and said second light driver is configured to drive said second light.

### Claim 12 (depends on 11)

The forward cooling headlight as in claim 11, wherein said first light is an outer light, and said second light is an inner light, wherein when said first light is lit, it provides a first focal point and wherein when said second light is lit, it provides a second focal point.

### Claim 13 (depends on 11)

The forward cooling headlight as in claim 11, further comprising a driver board, wherein said plurality of light drivers are disposed on said driver board.

### Claim 14 (depends on 12)

The forward cooling headlight as in claim 12, further comprising a light board, wherein said at least two lights are disposed on said light board.

### Claim 15 (depends on 14)

The forward cooling headlight as in claim 14, further comprising an additional light board, wherein a first light array comprising said first light and said second light are coupled to said first light board and a second light array is coupled to said second light board.

### Claim 16 (depends on 15)

The forward cooling headlight as in claim 15, wherein said first light array comprises a plurality of LED lights comprising at least two outer lights and at least one inner light.

### Claim 17 (depends on 16)

The forward cooling headlight as in claim 16, wherein said second light array comprises a plurality of lights comprising at least two outer lights and at least one inner light.

### Claim 18 (depends on 17)

The forward cooling headlight as in claim 17, wherein when said inner lights on said first light array and said second light array are lit, it creates a substantially singular focal point of light from the headlight.

### Claim 19 (depends on 17)

The forward cooling headlight as in claim 17, wherein when said outer lights on said first array and on said second array are lit, it creates at least two focal points of light from the headlight.

### Claim 20 (depends on 1)

The forward cooling headlight as in claim 1, wherein said heatpipe is a single continuous heatpipe configured to allow a fluid disposed therein to move throughout the heatpipe as driven by said synthetic jet and wherein said heatpipe has a first section and a second section, said first section extending substantially transverse to said second section.