JP2003249107A - Beam light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beam light hard to cause variation in optical control. <P>SOLUTION: The beam light comprises a point-like light source 1 such as a light-emitting diode, and an optical control element 2 which is molded from a transparent material such as transparent resin. The optical control element 2 comprises a cylinder 3 almost its center whose rear end is opened. The point- like light source 1 is housed inside the cylinder 3. A convex lens 4 is formed in front of the cylinder 3. The front light radiated forward from the point-like light source 1 is so optically controlled as to be almost parallel light. A reflecting surface 5 which, extending diagonally forward, reflects a side light radiated from the point-like light source 1 toward the front area is integrally formed at the rear-end peripheral edge of the cylinder 3. Further, an outer cylinder 6 extending backward from the outer peripheral edge of the reflecting surface 5 is integrally formed, with a board 7, on which the point-like light source 1 is mounted, aligned and held inside the outer cylinder 6. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle headlight
The present invention relates to a beam light suitable for applications such as a flashlight, a spotlight, and a downlight.

[0002]

2. Description of the Related Art A point light source and a light control element formed of a transparent material are provided, and the light control element has a rear end opening tube formed substantially in the center thereof, and the tube is provided inside the tube. A point light source is housed, a convex lens is formed on the front surface of the cylinder, and forward light emitted forward from the point light source is optically controlled by the convex lens to be substantially parallel light, A reflection surface that spreads obliquely forward and reflects side light emitted from the point light source forward is integrally formed on the rear edge of the cylinder, and the substrate on which the point light source is mounted is Beam lights that are positioned independently of the light control elements are considered known.

[0003]

Therefore, the relative positional relationship between the point light source and the light control element is likely to be varied, and thus the light control is also likely to be varied. Therefore,
The present invention has been made in view of such problems to be solved, and an object thereof is to provide a beam light in which variations in light control are unlikely to occur.

[0004]

[Means for Solving the Problems] As described in the claims.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described, but it is merely an exemplary embodiment adopted based on the present invention, and the present invention is based on matters peculiar to the embodiment. However, the technical scope of the present invention should be determined based on the matters shown in the claims and the matters substantially equivalent to the matters.

The illustrated embodiment is a beam light including a point light source 1 such as a light emitting diode and a light control element 2 formed of a transparent material such as transparent resin. The light control element 2 includes a tube 3 having a rear end opening formed substantially in the center thereof.
And the point light source 1 is housed inside the tube 3,
A convex lens 4 is formed on the front surface of the tube 3, and the forward light emitted from the point light source 1 toward the front is optically controlled by the convex lens 4 to be substantially parallel light.
The point light source 1 spreads diagonally forward along the rear edge of the point light source 1.
Reflective surface 5 that reflects the side light emitted from the front toward the front
Is integrally formed, and an outer cylinder 6 extending rearward from the outer peripheral edge of the reflection surface 5 is integrally formed. Inside the outer cylinder 6, a substrate 7 on which the point light source 1 is mounted is positioned and held. .

Although a metal vapor deposition film (not shown) is attached to the front surface of the reflecting surface 5 and the front surface of the reflection surface 5 is a mirror surface, the metal vapor deposition film may be attached to the back surface of the reflecting surface 5.
The shape of the reflecting surface 5 is preferably a parabolic surface, and the convex lens 4
The point light source 1 is positioned and arranged at the focal point of the reflection surface 5.

More specifically, the substrate 7 is circular according to the shape of the inner peripheral surface of the outer cylinder 6, and the point light source 1 is mounted at the center of the substrate 7. The point light source 1 is mounted such that the rear end of the transparent outer shell 8 is substantially in contact with the front surface of the substrate 7, and the lead wires 9 and 9 of the point light source 1 penetrate the substrate 7 to the rear surface of the substrate 7. Soldered and connected. The outer peripheral edge of the substrate 7 is the outer cylinder 6
The point light source 1 is positioned on the central axis 10 of the convex lens 4 and the reflecting surface 5 by being fitted and fitted to the inner peripheral surface of the. Board 7
Of the locking claw 1 formed near the rear end of the inner surface of the outer cylinder 6 is substantially abutted on the front surface of the rear surface of the reflecting surface 5.
The point-shaped light source 1 is aligned with the focal points of the convex lens 4 and the reflecting surface 5 so that the point light source 1 is prevented from coming off and fixed by the lenses 1 and 11.

According to the present embodiment, since the substrate 7 on which the point light source 1 is mounted and the light control element 2 are surely positioned, the point light source 1 and the light control element 2 are also surely positioned, This makes it possible to provide a beam light in which variations in light control are unlikely to occur. In addition, in order to use it for bicycle headlights, flashlights, spotlights, downlights, etc.,
For example, it is preferable to provide a cylindrical main body that houses the light control element 2, or to provide a transparent protective cover on the front surface of the light control element 2.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a front view of the same.

[Explanation of symbols]

1 point light source 2 Light control element 3 cylinders 4 convex lens 5 Reflective surface 6 outer cylinder 7 substrate

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 15/02 G03B 15/02 S H01L 33/00 H01L 33/00 M // F21Y 101: 02 F21Y 101: 02

Claims (2)

[Claims] 1. A point-shaped light source and a light control element formed of a transparent material, wherein the light control element includes a tube having a rear end opening formed substantially in the center thereof, and the tube having the rear end opening inside thereof. A point light source is housed, a convex lens is formed on the front surface of the cylinder, and forward light emitted forward from the point light source is optically controlled by the convex lens to be substantially parallel light, A reflecting surface is integrally formed on the rear end peripheral edge of the cylinder, the side surface spreading obliquely forward and reflecting the side light emitted from the point light source forward, and further rearward from the outer peripheral edge of the reflective surface. A beam light in which an extending outer cylinder is integrally formed, and a substrate on which the point light source is mounted is positioned and held inside the outer cylinder. 2. The beam light according to claim 1, wherein the front surface or the back surface of the reflecting surface is a mirror surface.