JP2000149620A - Lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem in a conventional lighting fixture for a vehicle in which a bulb is changed by taking a lens off that the lamp cannot be bright enough because the space for setting of a reflector is small since a bulb socket is projected from the back side of the reflector, and luminous flux utilization rate of bulb is reduced. SOLUTION: In a lighting fixture for a vehicle 1 a bulb socket 6 holding a bulb 4 backwardly is provided ahead of the focus of a reflector in the irradiation direction, and a cap 7 is provided to the bulb socket 6 in a freely opening/ closing way. The bulb socket 6 is not projected from the back side of the reflector 5, and the reflector 5 housed in a lamp chamber comprised of a housing 2 and a lens 3 can be larger in size, thereby the luminous flux utilization rate of the bulb 4 is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly, to a configuration often used for fog lamps and the like. The invention relates to a vehicular lamp that has been completed.

[0002]

2. Description of the Related Art FIG. 4 shows an example of the structure of a conventional vehicle lamp 90 of this type.
A light chamber which is hermetically sealed is formed by the light source 2 and a reflector 93 provided with a bulb socket 94 at the innermost part, a bulb 95 attached to the bulb socket 94 and protruding inside the reflector 93, and And a cap 96 that covers the front of the bulb 95 and prevents direct light from reaching the lens 92.

[0003] In the vehicle lamp 90 having the above-described structure, when the light bulb 95 is replaced, the lens 92 is replaced.
Is removed from the housing 91, the reflecting mirror 93 is taken out of the housing 91, and the bulb 95 is attached to and detached from the bulb socket 94 from the rear side of the reflecting mirror 93. After the replacement of the bulb 95, the vehicle lamp 90 is assembled in the reverse procedure.

[0004]

However, in the vehicular lamp 90 having the above-mentioned conventional structure, the reflecting mirror 93 is required.
The light bulb socket 94 and the light bulb 95 protrude from the rear surface of the vehicle lamp 90. Therefore, when the overall depth dimension of the vehicular lamp 90 is restricted, the depth of the reflecting mirror 93 itself cannot be set in the lamp room unless the depth is set to be shallow. As a result, the size of the reflecting mirror 93 becomes small, the luminous flux utilization rate for the bulb 95 is reduced, and the brightness is reduced.

When the bulb 95 is replaced, the reflecting mirror 93 must be taken out.
Since this type of replacement work is performed on the user side, it becomes complicated and difficult work for an unskilled worker, and there is also a problem that the burden on the worker when replacing the bulb is increased. The solution of this point is an issue.

[0006]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, in a vehicle lamp having a detachable lens, a focus of a reflecting mirror of the vehicle lamp is provided. A lamp lamp for holding a light bulb backward is provided in the irradiation direction more frontward, and a cap for opening and closing freely is provided in the light bulb socket. It is to solve the problem.

[0007]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 and FIG.
Is a preferred embodiment of a vehicular lamp according to the present invention. The vehicular lamp 1 has a lamp chamber which is hermetically sealed by a housing 2 and a lens 3, and the lens 3 is ready for replacement of a bulb 4. It is similar to the conventional example in that it is detachable.

[0008] Further, although the light bulb 4, the reflecting mirror 5, the light bulb socket 6 and the cap 7 are housed in the above-mentioned lamp chamber, it is the same as the conventional example. It is assumed that the socket 6 is installed in front of the reflecting mirror 5 in the irradiation direction, and when this installation is performed, the socket 6 is mounted so as to hold the bulb 4 backward.

To explain the above structure in more detail, when the reflecting mirror 5 is formed as a paraboloid of revolution, the filament 4a of the bulb 4 is located near the focal point f of the paraboloid of revolution. Therefore, in the present invention, the mounting direction of the light bulb 4 is opposite to that of the conventional example.
The light bulb socket 6 is provided so that the position where a is installed does not change.

The bulb socket 6 is attached to the reflector 5 by at least one attachment leg 6a. At this time, at least one of the attachment legs 6a is provided with a hollow portion 6b. Light bulb 4 penetrating through hollow portion 6b
An electric wire 8 and a coupler 8a for supplying power to the lamp socket 6 are provided.

The bulb socket 6 is provided with a bulb mounting spring 6c and the like, so that the bulb 4 can be freely attached and detached similarly to the prior art. A grommet 8b and a vehicle body-side coupler 8c are mounted on the side of the electric wire 8 opposite to the side on which the wiring is performed to the bulb socket 6, and penetrates through the housing 2 to the outside of the vehicle lamp 1. It is drawn out and power can be supplied from the vehicle body.

In addition, the light bulb socket 6 is provided with a cap 7 for covering the light bulb socket 6 from the front, and the above-described mechanism for replacing the light bulb 4 is used for a vehicle through the lens 3. When the inside of the lamp 1 is looked into, it is made invisible and the light bulb 4
It also plays a role of a hood that blocks direct light from the sun.

Here, in the bulb socket 6,
Since the light bulb 4 is mounted in the opposite direction to that of the conventional example, the light bulb 4 is attached and detached from the front in the irradiation direction. Therefore, the cap 7 that covers the bulb socket 6 from the front hinders the replacement operation when the bulb 4 is replaced. Therefore, in the present invention, the pivot 7 is attached to the joint of the cap 7 and the bulb socket 6.
a is provided so that it can be opened and closed freely.

Next, the operation and effects of the vehicle lamp 1 of the present invention having the above-described configuration will be described. According to the present invention, the bulb 4 and the bulb socket 6 are located inside the reflecting mirror 5 by providing the bulb socket 6 in the conventional reverse direction. This eliminates the need for projecting the bulb socket 6 from the back of the reflector 5.

Therefore, even if the size of the lamp room constituted by the housing 2 and the lens 3 is the same, the reflecting mirror 5 is not deep,
Both the outer diameters can be set to be large, that is, the luminous flux utilization rate for the bulb 4 is improved, and the vehicle lamp 1 having the same outer diameter can be made a brighter vehicle lamp 1. .

Further, by setting the bulb socket 6 in the above-described mounting direction of the present invention, the bulb 4 of the bulb socket 6 is provided.
Is attached to the front (toward the lens 3), and when the bulb 4 is replaced, the replacement can be performed with only the lens 3 removed. Therefore, there is no need to take out the reflecting mirror 5 from the inside of the housing 2 as in the conventional example, and the replacement operation is simplified. At this time, the cap 7 is rotated
Can be easily opened and closed when the bulb 4 is replaced.

FIG. 3 shows another embodiment of the vehicular lamp 1 according to the present invention. In the previous embodiment, the light bulb socket 6 was formed separately from the reflecting mirror 5. However, it is also possible to form the reflector 9 and the bulb socket 9a integrally by, for example, resin molding or the like as shown in the figure.

In this case, the reflecting mirror 9 is formed depending on the configuration of the mold.
An opening 9b must be provided in the front part of the light bulb 4, but the light reflected by the opening 9b is originally blocked by the cap 7. Is equipped with a light bulb socket,
Because it is the part where the reflection surface could not be formed,
No new light amount loss occurs due to the opening 9b.

At this time, the cap 7 is attached to the light bulb socket 9a so as to be openable and closable by the rotating shaft 7a as in the previous embodiment. With the above configuration, in this embodiment, the number of components can be further reduced, which is advantageous for cost reduction and the like. Since the operation and effect other than the above are the same as those of the previous embodiment,
Detailed description here is omitted.

[0020]

As described above, according to the present invention, a bulb socket for holding a bulb backward is provided ahead of the focal point of the reflector of the vehicular lamp in the irradiation direction, and the bulb socket is opened and closed. First of all, by adopting a vehicular lamp equipped with a flexible cap, it is possible to prevent the bulb socket from protruding from the rear surface of the reflecting mirror, and to store the light in a lamp room composed of a housing and a lens. Mirrors of larger dimensions can be adopted, the luminous flux utilization rate for the bulbs can be improved, and even brighter vehicle lighting can be achieved even with the same external shape. It is extremely effective for improvement.

In addition, with the above structure, the bulb can be replaced only by removing the lens, eliminating the need for complicated replacement work such as taking out the reflector and replacing the bulb from the back as in the conventional example. It is assumed that workers who are unfamiliar with this kind of work, such as automobile users, can easily perform replacement work, and avoid leaving vehicle lamps unlit and handling this kind of vehicle lamps. And an extremely excellent effect is also obtained in improving the practicality.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a vehicular lamp according to the present invention.

FIG. 2 is a perspective view showing a main part of the same embodiment.

FIG. 3 is a perspective view showing another embodiment of the vehicular lamp according to the present invention in a main part.

FIG. 4 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Housing 3 ... Lens 4 ... Light bulb 5 ... Reflector 6 ... Light bulb socket 6a ... Mounting leg 6b ... Hollow part 7 ... Cap 7a ... Rotating shaft 8 ... … Wire 9… Reflector

Claims (3)

[Claims] 1. A vehicular lamp in which a lens is detachable, wherein a bulb socket for holding a bulb backward is provided ahead of a focal point of a reflector of the vehicular lamp in an irradiation direction. A vehicular lamp, wherein the socket is provided with a cap that can be freely opened and closed. 2. At least one of the mounting legs of the light bulb socket, which is joined to the reflector, is provided with a hollow portion, and a power supply line to the light bulb is provided through the hollow portion. The vehicular lamp according to claim 1, wherein: 3. The vehicular lamp according to claim 1, wherein the mounting leg is formed integrally with the reflector.