JP3085562U - Position lamp - Google Patents

Abstract

(57) [Problem] To provide a position lamp capable of obtaining high visibility over a wide viewing angle. The position lamp uses an LED lamp as a light source. A light diffusion cap for covering a light emitting portion of the LED lamp is provided in a lamp socket supporting the LED lamp. I am wearing it. According to this configuration, since the light of the LED lamp 1 emitted from the light emitting section 6 is diffused at a wide angle via the light diffusion cap 3, uniform brightness is obtained over a wide viewing angle, and visibility is improved.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a position lamp installed separately from a main head bulb in a vehicle headlamp.

[0002]

[Prior art]

 This type of position lamp illuminates a small amount of light in the headlamp when the headlamp lighting is small, and plays a role as a vehicle sidelight, a small lamp, and the like. Conventionally, incandescent light bulbs have been mainly used as position lamps. Recently, however, the need for more vivid light and the development of LEDs that emit white light have led to the use of LED lamps as position lamps. As a result, the products used have become popular.

[0003]

[Problems to be solved by the invention]

 However, since a general-purpose standard LED lamp has a structure in which the light-emitting portion is sealed with a resin having a shell-shaped outer shape, when such an LED lamp is used as a position lamp, There is a problem that uniform luminance cannot be obtained over a wide viewing angle and visibility is poor.

An object of the present invention is to solve such a problem and to provide a position lamp using an LED lamp capable of obtaining high visibility over a wide viewing angle.

[0005]

[Means for Solving the Problems]

 The position lamp according to the present invention is a position lamp using an LED lamp as a light source, wherein a light diffusion cap for covering a light emitting portion of the LED lamp is mounted on a lamp socket supporting the LED lamp. . According to this configuration, since the light of the LED lamp emitted from the light emitting portion is diffused at a wide angle through the light diffusion cap, uniform brightness is obtained over a wide viewing angle, and visibility is improved.

In the position lamp, a surface of a tip portion of the light diffusion cap may have a substantially spherical surface. With this configuration, the light diffusion efficiency of the light diffusion cap is improved, and the visibility is further improved.

In the position lamp, the light diffusion cap may be made of a transparent acrylic resin. In the case of this configuration, the light diffusion cap can be easily formed.

[0008]

[Embodiment of the invention]

 One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a schematic configuration of a position lamp according to this embodiment. The position lamp uses the LED lamp 1 as a light source. A light diffusion cap 3 that covers a light emitting portion of the LED lamp 1 is mounted on a lamp socket 2 on which the LED lamp 1 is supported.

[0009] The LED lamp 1 is a transparent acrylic in which a light emitting portion of an LED (Light Emitting Diodes) having two lead wires 4 and 5 on an anode side and a cathode side is formed in a shell-like outer shape. It is sealed with a resin 6 or the like. In some cases, a current limiting resistor or a constant current diode is interposed in one of the lead wires 4 and 5, but is omitted in this embodiment.

The lamp socket 2 is made of an electrically insulating material such as a resin, and has a cylindrical portion 2a at one end and a plate-like portion 2b at the other end, as shown in FIGS. Are formed from the bottom surface of the LED lamp 1 to the end surface of the plate-shaped portion 2b. By inserting the lead wires 4 and 5 into these insertion holes 7, the LED lamp 1 is supported by the lamp socket 2 so that the light emitting portion sealed with the transparent acrylic resin 6 projects from the cylindrical portion 2 a. Be held.

The light-diffusing cap 3 is made of, for example, a transparent acrylic resin, and has a substantially spherical top surface. The base end of the light diffusion cap 3 is press-fitted into the cylindrical portion 2 a of the lamp socket 2. Is fitted with a cap 3.

In this position lamp, the sealing portion of the transparent acrylic resin 6 which is the light emitting portion of the LED lamp 1 is covered with the light diffusion cap 3 as described above, so that the light emitted from the light emitting portion emits light from the cap 3. The light is diffused to a wide angle through the light source, so that uniform brightness can be obtained over a wide viewing angle and visibility is improved.

In this embodiment, the light diffusion efficiency is improved because the surface of the distal end portion of the light diffusion cap 3 is formed as a substantially spherical surface. Further, since the light diffusion cap 3 is made of a transparent acrylic resin, the cap 3 can be easily formed.

In addition, as a material of the light diffusion cap 3, a diffusion molding resin which is a special material may be used. In this case, light diffusion efficiency is improved, uniform brightness is obtained over a wider viewing angle, and visibility is further improved.

[0015]

[Effect of the invention]

 The position lamp of the present invention uses an LED lamp as a light source. Since the light diffusion cap that covers the light emitting portion of the LED lamp is mounted on the lamp socket supporting the LED lamp, a wide viewing angle is provided. Over a wide range, and the visibility is improved. In this configuration, when the front surface of the light diffusion cap has a substantially spherical surface, the light diffusion efficiency of the light diffusion cap is improved, and the visibility is further improved. Further, in the above configuration, when the light diffusion cap is made of a transparent acrylic resin, the light diffusion cap can be easily formed.

[Brief description of the drawings]

FIG. 1 is a front view showing a schematic configuration of a position lamp according to an embodiment of the present invention.

FIG. 2 is a front view showing a part of the position lamp in a cutaway manner.

FIG. 3 is an exploded perspective view of the position lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LED lamp 2 Lamp socket 3 Light diffusion cap 6 Transparent acrylic resin (light emitting part)

Claims (3)

[Utility model registration claims] 1. A position lamp using an LED lamp as a light source, wherein a light diffusion cap for covering a light emitting portion of the LED lamp is mounted on a lamp socket on which the LED lamp is supported. . 2. The position lamp according to claim 1, wherein the surface of the tip portion of the light diffusion cap has a substantially spherical surface. 3. The position lamp according to claim 1, wherein the light diffusion cap is made of a transparent acrylic resin.