Ventilation structure of light fixture for vehicle

Patent metadata

Field	Value
Publication number	US-9618177-B2
Application number	US-201514884127-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Oct 21, 2014
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A ventilation structure of a light fixture for a vehicle comprising a light fixture for a vehicle at which a suction port and an exhaust port are provided; a tube member having an upstream side opening portion into which traveling wind, that is taken-in when a vehicle travels, is introduced, and a downstream side opening portion from which the traveling wind is discharged; and a communication tube, one end portion thereof is connected to the exhaust port of the light fixture for a vehicle, and other end portion thereof is connected between the upstream side opening portion and the downstream side opening portion of the tube member, the other end portion extends into an interior of the tube member and opens toward a downstream side in a direction of passage of the traveling wind.

First claim

What is claimed is:

1. A ventilation structure of a light fixture for a vehicle, comprising:
a suction port and an exhaust port provided at the light fixture;
a tube member having an upstream side opening portion into which traveling wind, that is taken-in when a vehicle travels, is introduced, and a downstream side opening portion from which the traveling wind is discharged; and
a communication tube, one end portion thereof is connected to the exhaust port of the light fixture for a vehicle, and other end portion thereof is connected between the upstream side opening portion and the downstream side opening portion of the tube member, the other end portion extends into an interior of the tube member and opens toward a downstream side in a direction of passage of the traveling wind.

2. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein:
an intake port that takes-in the traveling wind is provided at a vehicle front end portion, and
the upstream side opening portion of the tube member is connected to the intake port.

3. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein a wind passage surface area of a region, at which the other end portion of the communication tube opens, of the tube member is set to be smaller than an opening sectional surface area of the upstream side opening portion.

4. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein a filter for trapping foreign matter or a labyrinthine structural portion is provided at the exhaust port or the communication tube.

5. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein the downstream side opening portion is set so as to be positioned further toward a lower side than the upstream side opening portion.

6. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein the exhaust port is provided at one end portion in a vehicle transverse direction of the light fixture for a vehicle, and the suction port is provided at another end portion in the vehicle transverse direction of the light fixture for a vehicle.

7. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein the exhaust port of the light fixture for a vehicle opens toward a vehicle transverse direction inner side.

8. The ventilation structure of a light fixture for a vehicle of claim 1 , wherein the tube member is formed in a shape that is curved in an L-shape as seen in plan view, and the downstream side opening portion opens at a vehicle transverse direction inner side.

Assignees

• Toyota Motor Co Ltd

Inventors

• Ito Akira
• Mimoto Makoto
• Otoguro Kazuma
• Sakimoto Tetsuya

Classifications

• F21S48/335 Primary

  Mechanical Engineering · mapped topic

• F21S45/33 Primary

  specially adapted for headlamps · CPC title