Lighting device

Patent metadata

Field	Value
Publication number	US-9683724-B2
Application number	US-201414333762-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Jul 26, 2013
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A lighting device includes a housing including a front opening portion and a rear opening portion; a light source unit including LED light sources and a heat sink configured to absorb and radiate heat produced by the LED light source; a socket formed by an elastic member and configured to allow the heat sink to be fitted and supported in the rear opening portion such that part of the heat sink is exposed rearward through the rear opening portion and that aiming adjustment is enabled by changing a position of the light source unit relative to the housing. A knob used for manually turning an adjustment screw is attached to a rear end portion of the adjustment screw, and the socket is provided with a rib extending along a circumferential direction of the socket and protruding rearward of the heat sink.

First claim

What is claimed is:

1. A lighting device comprising:
a housing including a front opening portion and a rear opening portion;
a lens covering the front opening portion;
a light source unit including an LED light source placed in a space surrounded by the housing and the lens, and a heat sink configured to absorb and radiate heat produced by the LED light source;
a socket formed by an elastic member and configured to allow the heat sink to be fitted and supported in the rear opening portion such that part of the heat sink is exposed rearward through the rear opening portion and that aiming adjustment is enabled by changing a position of the light source unit relative to the housing; and
an aiming adjustment mechanism located outside the rear opening portion and exposed on a rear-surface side of the housing, wherein
a knob used for manually turning the adjustment mechanism is attached to a rear end portion of the adjustment mechanism,
the socket is provided with a rib extending in a circumferential direction of the socket and protruding rearward of the heat sink, and
when an operator puts a hand on the knob to operate the knob, the rib is located between the hand of the operator and the heat sink.

2. The lighting device according to claim 1 , wherein
the socket has an outer annular portion fitted and supported in the rear opening portion, an inner annular portion in which the heat sink is fitted and supported, and a thinned portion being interposed between the outer annular portion and the inner annular portion and enabling them to be displaced relative to each other, and
the rib is formed on the outer annular portion.

3. The lighting device according to claim 2 , wherein
a plurality of radiator fins are provided by the heat sink, one of said plurality of radiator fins, which is located near the rib, is formed such that a rear end portion thereof is located frontward of a rear end portion of the inner annular portion.

4. A lighting device comprising:
a housing including a front opening portion and a rear opening portion;
a lens covering the front opening portion;
a light source unit including an LED light source placed in a space surrounded by the housing and the lens, and a heat sink configured to absorb and radiate heat produced by the LED light source;
a socket formed by an elastic member and configured to allow the heat sink to be fitted and supported in the rear opening portion such that part of the heat sink is exposed rearward through the rear opening portion and that aiming adjustment is enabled by changing a position of the light source unit relative to the housing; and
an aiming adjustment mechanism located outside the rear opening portion and exposed on a rear-surface side of the housing, wherein
a knob used for manually turning the adjustment mechanism is attached to a rear end portion of the adjustment mechanism,
the socket is provided with a rib extending in a circumferential direction of the socket and protruding rearward of the heat sink, and
the rib is formed in symmetrical shapes at two symmetrical locations which are along a circumferential direction of the socket and face each other.

5. A lighting device comprising:
a housing including a front opening portion and a rear opening portion;
a lens covering the front opening portion;
a light source unit including an LED light source placed in a space surrounded by the housing and the lens, and a heat sink configured to absorb and radiate heat produced by the LED light source;
a socket formed by an elastic member and configured to allow the heat sink to be fitted and supported in the rear opening portion such that part of the heat sink is exposed rearward through the rear opening portion and that aiming adjustment is enabled by changing a position of the light source unit relative to the housing; and
an aiming adjustment mechanism located outside the rear opening portion and exposed on a rear-surface side of the housing, wherein
a knob used for manually turning the adjustment mechanism is attached to a rear end portion of the adjustment mechanism,
the socket is provided with a rib extending in a circumferential direction of the socket and protruding rearward of the heat sink, and
the lighting device is used for a motorcycle,
the motorcycle has a head pipe enabling steering of a steering handle gripped by a driver, and left and right front forks which are provided at left and right front portions of the head pipe, are steered integrally with the steering handle, and have a front wheel attached to lower ends thereof,
the lighting device is supported by the head pipe at a position frontward of the left and right front forks,
the steering handle is provided with a handle lock mechanism configured to disable the steering handle from turning, with the steering handle being turned to a left side, and
the knob is placed at a left side of the heat sink in a vehicle width direction.

6. The lighting device according to claim 2 , wherein
the rib is formed in symmetrical shapes at two symmetrical locations which are along a circumferential direction of the socket and face each other.

7. The lighting device according to claim 3 , wherein
the rib is formed in symmetrical shapes at two symmetrical locations which are along a circumferential direction of the socket and face each other.

8. The lighting device according to claim 1 , wherein
the rib is formed in symmetrical shapes at two symmetrical locations which are along a circumferential direction of the socket and face each other.

9. The lighting device according to claim 2 , wherein
the lighting device is used for a motorcycle,
the motorcycle has a head pipe enabling steering of a steering handle gripped by a driver, and left and right front forks which are provided at left and right front portions of the head pipe, are steered integrally with the steering handle, and have a front wheel attached to lower ends thereof,
the lighting device is supported by the head pipe at a position frontward of the left and right front forks,
the steering handle is provided with a handle lock mechanism configured to disable the steering handle from turning, with the steering handle being turned to a left side, and
the knob is placed at a left side of the heat sink in a vehicle width direction.

10. The lighting device according to claim 3 , wherein
the lighting device is used for a motorcycle,
the motorcycle has a head pipe enabling steering of a steering handle gripped by a driver, and left and right front forks which are provided at left and right front portions of the head pipe, are steered integrally with the steering handle, and have a front wheel attached to lower ends thereof,
the lighting device is supported by the head pipe at a position frontward of the left and right front forks,
the steering handle is provided with a handle lock mechanism configured to disable the steering handle from turning, with the steering handle being turned to a left side, and
the knob is placed at a left side of the heat sink in a vehicle width direction.

11. The lighting device according to claim 1 , wherein
the lighting device is used for a motorcycle,
the motorcycle has a head pipe enabling steering of a steering handle gripped by a driver, and left and right front forks which are provided at left and right front portions of the head pipe, are steered integrally with the steering handle, and have a front wheel attached to lower ends thereof,
the lighting device is supported by the head pipe at a position frontward of the left and right front forks,
the steering handle is provided with a handle lock mechanism configured to disable the steering handle from turn

Assignees

• Honda Motor Co Ltd

Inventors

• Takenaka Nobuyuki
• Hirakida Kazuhiro

Classifications

• F21S41/192

  Details of lamp holders, terminals or connectors · CPC title

• B60Q1/0683

  Adjustable by rotation of a screw · CPC title

• F21S45/48

  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 · CPC title

• F21S45/50

  Waterproofing · CPC title

• F21S41/55

  Attachment thereof · CPC title