JPH0917205A - Bulb of light for vehicle - Google Patents

Abstract

PURPOSE: To provide the bulb of a light for a vehicle in which a hood cap is integrally formed in its tip part. CONSTITUTION: The external tube 21 of a bulb is mounted in a housing 1 in which a lens 2 is mounted in its front opening part and a reflecting mirror 4 is mounted in its rear, toward the lens 2 from the reflecting mirror 4. A conic hood cap 22 in which a reflecting film 23 to the light emission of the bulb is formed in the lens-side surface is integrally formed in the tip part of the external tube 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulb of a vehicle lamp having a lens attached to a front opening of a housing, a reflector attached to a rear surface thereof, and a hood cap for shielding glare.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional automobile headlamp having a hood cap attached thereto. A lens 2 is provided in a front opening of a housing 1, a base 5a of a bulb 5 is mounted on a base 3a of a bulb mounting portion 3 on the back, and a reflecting mirror 4 is mounted around the base 5a. 6 is a socket for supplying power to the valve 5. Reference numeral 4a is a vertical extension of the reflecting mirror 4.

Reference numeral 10 is a hood cap that shields the glare of the valve 5, and a stay 12 is provided on a hood cap body 11 having a polygonal peripheral surface 11a and a pyramidal tip surface 11b.
Is laid down. The base end portion is fixed to the back surface of the base 3a with a screw 13 through a mounting hole. As a result, the bulb 5 mounted with the head facing the lens 2
Although it is possible to block the direct light, the stay 12 is not good-looking and requires a separate component from the valve. Therefore, Japanese Utility Model Application Laid-Open No. 5-45801 proposes to integrally form a hood cap on the reflecting mirror.

[0004]

As a result, the number of parts or the number of mounting steps can be reduced, but the structure of the reflecting mirror itself is bulky and the molding process becomes complicated. In any case, a portion corresponding to the stay is provided, and there is room for improvement in design.

In view of the above points, the present invention has an object to provide a bulb of a vehicular lamp having a hood cap integrally formed at its tip.

[0006]

SUMMARY OF THE INVENTION To achieve this object, the present invention directs an outer tube from a reflecting mirror to a lens in a housing having a lens attached to the front opening and a reflecting mirror attached to the back. In the bulb of the vehicular lamp mounted as described above, a cap-shaped hood cap having a reflection film for bulb light emission formed on the lens side surface is integrally formed at the tip of the outer tube.

[0007]

[Function] Since the bulb emission is reflected by the reflection film,
The glare is blocked. With the cap-like shape, the outer tube is concealed even at a position deviated from the front of the bulb, and a glare shielding function can be obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A headlamp bulb according to an embodiment of the present invention will be described with reference to FIGS. The same reference numerals as those in FIG. 3 indicate the same or equivalent parts. 20 is an outer tube 21
Is a bulb that is attached from the reflecting mirror 4 toward the lens 2, and its base portion 5a is fitted into the base 3a of the bulb attachment portion 3 provided behind the housing 1 so that the socket 6
Is installed.

A polygonal pyramid hood cap 22 having a reflecting film 23 formed on the surface of the lens 2 side by coating or vapor deposition at the tip of a glass cylindrical outer tube 21 of the bulb 20.
Are integrally formed. In this hood cap, the cap-shaped periphery projects outward from the peripheral surface of the outer tube 21, so that the base 5a is hidden together with the reflective film 23, and the outer tube 21 is obliquely viewed from the front. To hide. FIG. 2A shows a perspective view of this hood cap.

When the bulb 20 is turned on, the direct light of the filament emission, which goes directly forward, is reflected by the back surface of the reflection film 23 through the hood cap 22, and the glare is shielded even when viewed obliquely. The light reflected by the reflecting mirror 4 that emits filament light is projected forward through the lens 2.
As a result, the hood cap 22 has a sense of unity with the bulb 20, and the designability as a light source is improved. Further, the front surface of the bulb 20 is a reflective surface without a stay, and the crystal feeling is also improved.

As shown in FIG. 2B, the shape of the hood cap may be varied in consideration of design such as adding a circumferential surface 27 to the above-mentioned hood cap 22 or forming a disc shape as shown in FIG. 2C. Can be configured in the shape of. The present invention can also be applied to vehicle lamps other than headlamps such as clearance lamps, cornering lamps, and rear combination lamps.

[0012]

As described above, according to the present invention, since the hood cap is integrally formed with the valve, no separate parts are required, the appearance is improved, the quality is improved, and the degree of freedom in design is improved. To do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a headlamp that employs a bulb according to an exemplary embodiment of the present invention.

FIG. 2 is a perspective view showing a hood cap portion of the valve.

FIG. 3 is a cross-sectional view of a headlamp that employs a conventional hood cap.

[Explanation of reference numerals] 1 housing 20 valve 22 hood cap 23 reflective film

Claims (1)

[Claims] 1. A bulb of a vehicular lamp in which a lens is attached to a front opening portion and a reflecting mirror is attached to a rear surface of the housing, and the outer tube is attached from the reflecting mirror toward the lens. A bulb for a vehicle lamp, characterized in that a cap-shaped hood cap having a reflection film for bulb emission is integrally formed on the lens side surface.