JP2001101924A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable waterproofing of both lighting device and interior of lighting utensil without need for either a duplicated waterproofing structure or a specific cover for waterproof. SOLUTION: A lighting system comprises a discharging lamp 1, a socket 2a, a reflector 3, a bulb cover 4a, lens 51 and a lighting utensil body 52a, a opening 521a and a opening 522a closed by the bulb cover 4a, and containing the socket 2a and the reflector 3 therein, a lighting unit 6a constituted by a closing member 61a formed in the shape which can close the opening 521a and a lighting device 62a making the discharging lamp 1to be started and lighted on, and an elastic member 7a interposed between the lighting utensil 5a and the closing member 61a thereby hermetically sealing between the lighting utensil 5a and the closing member 61a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device used for a headlight of an automobile, for example.

[0002]

2. Description of the Related Art FIG. 18 is a sectional view of a conventional lighting device, and FIG. 19 shows a lighting device in FIG.

[0003] This lighting device comprises a discharge lamp 1 and a socket 2.
a, reflector 3, valve cover 4b, lens 5
1 and a lighting device 6y, a lighting device 6y, an elastic member 7y, and a coupler 8y. The socket 2 is connected to the lighting device 6y via a cable W1.
In order to seal the opening 521y of the lamp main body 52y for inserting a into the lamp 5y, an elastic member 7y is provided between the lamp main body 52y and the outer wall of the lighting device 6y.

FIG. 20 is a cross-sectional view of another conventional lighting device, and FIG. 21 shows a lighting device in FIG.

This lighting device comprises a discharge lamp 1 and a socket 2
a, reflector 3, valve cover 4z, lens 5
1 and a lamp body 52z, a lighting device 6z, an elastic member 7z, a coupler 8z, and a cover 9z.
In order to seal the opening 521z of the lamp body 52z for inserting the socket 2a or the like connected to the lighting device 6z via the cable W1 into the lighting device 5z, the lighting device 6z using the elastic member 7z. The opening 521z including
Is closed by a cover 9z.

[0006]

However, FIG.
In the conventional lighting device shown in (1), in order to achieve waterproofing inside the lighting device 5y, it is necessary to provide a waterproof structure using an elastic member 7y between the lighting device 5y and the lighting device 6y. It needs to be structured.

[0007] In the conventional lighting device shown in FIG.
Although it is not necessary to provide the lighting device 6z with a waterproof structure in order to waterproof the lamp 5z, an elastic member 7z and a cover 6z dedicated to waterproofing are required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides an illuminating device capable of waterproofing both a lighting device and a lighting device without requiring any of a redundant waterproof structure and a waterproof-only cover. The purpose is to provide.

[0009]

According to a first aspect of the present invention, there is provided a lighting device comprising: a discharge lamp; a socket electrically connected to the discharge lamp; A lamp for accommodating the discharge lamp and the socket therein, a closing member formed in a shape for closing an opening of the lamp, and the discharge member attached to a surface of the closing member facing the inside of the lamp. A lighting unit including a lighting device for lighting an electric lamp, and an elastic member interposed between the lamp and the closing member for closing an opening of the lamp and sealing the space therebetween are provided.

[0010] In this structure, the lighting unit includes the closing member formed in a shape for closing the opening of the lamp.
The opening of the lamp is closed by the closing member. In addition, since the lighting device is attached to the surface of the closing member that desires the inside of the lamp, the lighting device is housed inside the lamp whose opening is closed. This makes it possible to waterproof both the lighting device and the lamp without requiring any of the overlapping waterproof structure and the waterproof cover.

In the lighting device according to the first aspect,
The lamp is a lens disposed in front of the discharge lamp,
The discharge lamp and the socket may be housed inside the lamp body. The lamp body may be a box-shaped lamp body having a front opening closed by the lens. Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

The lighting device according to claim 1 or 2 may further include a bulb cover, and the lamp may have a structure having another opening closed by the bulb cover. Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

Further, in the lighting device according to the second aspect,
The lamp body has the opening in a range extending both downward and rearward with respect to the discharge lamp, and the closing member is configured such that one surface faces upward and the other surface faces forward. The lighting device is formed to have an L-shaped cross section, closes the lower side of the opening with the one surface and closes the rear side of the opening with the other surface, and the lighting device is attached to the one surface. (Claim 4). In this structure, the lighting device is attached to one surface facing upward of the closing member,
It becomes difficult to receive radiant heat from the discharge lamp.

The lighting device according to any one of claims 1 to 4, wherein the lighting device is attached to an outer surface of the closing member and is electrically connected to the lighting device through a through hole formed in the closing member. A structure including an input power supply coupler may be used. Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

Further, in the lighting device according to claim 2 or 3, the lamp body has the opening for closing the closing member below the discharge lamp, and the closing member faces upward. A structure in which the lighting device is housed inside the box-shaped closing member, the side surface and the lower surface protruding downward from the outer surface of the lamp body near the opening where the closing member is closed. (Claim 6). In this structure, since the lower side of the lighting unit protrudes to the outside, the internal heat is suitably radiated to the outside at the protruding portion.

Further, in the lighting device according to claim 2 or 4, the lamp body has the opening on the rear side with respect to the discharge lamp, and the closing member also serves as a bulb cover for attaching and detaching the discharge lamp. It may have a structure (claim 7). In this structure, since the closing member also serves as the valve cover, the number of components is reduced.

Further, in the lighting device according to claim 7,
The socket may have a structure provided integrally with the lighting unit (claim 8). Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

The lighting device according to any one of claims 1 to 8, further comprising an igniter for starting the discharge lamp, wherein the lighting device is electrically connected to the socket via the igniter. (Claim 9).
Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

Further, in the lighting device according to the ninth aspect,
The igniter may have a structure provided integrally with the lighting device. Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

Further, in the lighting device according to the ninth aspect, the igniter may have a structure provided integrally with the socket. Even with this structure, both the lighting device and the lamp can be waterproofed without the need for both the overlapping waterproof structure and the waterproof cover.

[0021]

FIG. 1 is a sectional view showing a lighting device according to a first embodiment of the present invention.
An embodiment will be described.

The lighting device shown in FIG. 1 is used for a headlight of an automobile, and as a specific example, a discharge lamp 1 such as a metal halogen lamp and an electrode portion behind (to the right in the figure) the discharge lamp 1. A socket 2a formed in a bottomed cylindrical shape that can be mounted and having a connection terminal that is electrically connected to each electrode of the discharge lamp 1;
A concave mirror (rotating parabolic mirror in the figure) that reflects the illumination light of the discharge lamp 1 forward (to the left in the figure), and has a hole at the rear end for inserting the discharge lamp 1 into the concave surface. Projection piece for mounting and exchanging the reflector 3 and the discharge lamp 1, formed in a box shape (including a bottomed cylindrical shape) with a front opening, and standing outward at an edge of the front opening. And a valve cover 4a having a plurality of 41a as in the prior art.
As features of the first embodiment, a lamp 5a, a lighting unit 6a, and an elastic member 7a are provided. The reflector 3 is, for example, a lamp 5a so that the angle can be adjusted, as in the related art.
Mounted inside.

The lamp 5a is made of a translucent material such as glass and is disposed in front of the discharge lamp 1, a metal lamp main body 52a for housing the discharge lamp 1, the socket 2a and the reflector 3 therein. It consists of. The lamp body 52a is formed in a box shape with a front opening closed by the lens 51, and has an opening 521a in a range (partly) in both the upper rear side and the rear upper side with respect to the discharge lamp 1. It has another opening 522a closed by the valve cover 4a at the rear center side. A screw hole for a screw S is formed near the opening 521a of the lamp body 52a. Further, a groove (not shown) for inserting each protruding piece 41a of the bulb cover 4a is continuously provided in the opening 522a of the lamp body 52a.

The lighting unit 6a has a structure in which the closing member 61a and the lighting device 62a are integrally provided. The closing member 61a has a shape for closing the opening 521a of the lamp body 52a with a metal plate or the like having a shielding effect.
Specifically, it is formed in an L-shaped cross section such that one surface faces downward and the other surface faces forward, and the upper and rear edges of the discharge lamp 1 are fitted to the openings 521a. Each of the fitting steps 611a has a step 611a.
Has a plurality of insertion holes (not shown) for screws S formed in the hole. On the other hand, the lighting device 62a starts and lights the discharge lamp 1, and is attached to the inner surface of the closing member 61a. The socket 2a is connected to the lighting device 62a via, for example, a two-wire cable W1, and the output of the lighting device 62a is electrically connected to each connection terminal of the socket 2a. Further, the lighting device 62a is configured to be supplied with electric power from the outside.

The elastic member 7a is provided between the lamp 5a and the closing member 61.
and a rubber material or the like that is interposed between them and seals them. The elastic member 7a is attached to the inner surface of the edge of each fitting step 611a of the lighting unit 6a with an adhesive or a double-sided adhesive seal, for example.

In short, in the first embodiment, the lighting unit 6a includes the socket 2a, the closing member 61a, the lighting device 6
The configuration is such that the 2a and the elastic member 7a are integrally provided.

Next, an example of the order of assembling the lighting unit 6a to the lamp 5a, which is a feature of the first embodiment, will be described. First, the lighting unit 6a with the lighting device 62a side facing downward.
Into the opening 521a of the lamp body 52a,
The lighting unit 6a is connected to the lamp body 5 by using a plurality of screws S.
Screw 2a.

Thereafter, the discharge lamp 1 is inserted through the hole of the reflector 3 into the concave surface and attached to the rearmost part of the reflector 3.
In this case, the discharge lamp 1 may be attached to the rearmost portion of the reflector 3 via a fixture (so-called fixture) or the like, or the reflector 3 may be configured so that the discharge lamp 1 can be directly attached to the rearmost portion. You may.

Thereafter, the socket 2a is mounted on the electrode portion of the discharge lamp 1, and then the bulb cover 4a is attached to the lamp body 52a.
Is rotationally fitted into the opening 522a. Thereby, the lighting fixture 5
The inside of a is closed.

It is needless to say that the present invention is not limited to this assembling order but may be any other assembling order. For example, first, the lighting unit 6a is fitted to the opening 521a of the lamp body 52a with the lighting device 62a facing downward, and then the lighting unit 6a is screwed to the lamp body 52a using a plurality of screws S. Thereafter, the electrode portion of the discharge lamp 1 is mounted on the socket 2a, and subsequently, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3, and the discharge lamp 1 and the socket 2a are attached to the rearmost portion of the reflector 3. Thereafter, the assembly order may be such that the bulb cover 4a is rotationally fitted into the opening 522a of the lamp body 52a. In this case, the integrated discharge lamp 1 and socket 2a may be attached to the rearmost part of the reflector 3 via an attachment or the like, or the discharge lamp 1 and the socket 2a may be directly mounted to the rearmost part. The reflector 3 may be configured as possible.

As described above, the lighting unit 6a is constituted by the closing member 61a formed in a shape for closing the opening 521a of the lamp 5a and the lighting device 62a attached to the inner surface of the closing member 61a. By using the elastic member 7a interposed between the lighting device 62a and the lighting device 62a, the lighting device 62a and the lamp 5a do not need any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

In the first embodiment, the igniter for starting the discharge lamp 1 is provided in the lighting device 62a together with the inverter for lighting the discharge lamp 1. However, the present invention is not limited to this configuration. A configuration may be provided separately between the socket and the socket, or a configuration provided integrally with the socket.

The lamp body 52a and the closing member 61
It is needless to say that a is not limited to metal but may be a resin plated so as to have a shielding effect.

Further, the elastic member 7a is
Although it is affixed to the inner surface of the edge of each fitting step 611a, it goes without saying that the configuration may be such that it is affixed to the lamp body 52a side.

FIG. 2 is a sectional view showing a lighting device according to a second embodiment of the present invention, and FIG. 3 is a diagram showing a lighting unit and the like in FIG. 2, and the following description of the second embodiment will be made with reference to these drawings. I do.

The lighting device shown in FIG. 1 includes a discharge lamp 1, a socket 2a, and a reflector 3 in the same manner as in the first embodiment, and differs from the first embodiment in that a bulb cover 4b, a lamp 5b, Lighting unit 6b, elastic member 7b
And a coupler 8b.

The bulb cover 4b is used for mounting and replacing the discharge lamp 1, and is formed in a box shape with a front opening, for example, a flange portion 4 formed outward at an edge of the front opening.
1b. The bulb cover 4b is attached to the lamp 5b by, for example, screws (not shown).

The lamp 5b comprises a lens 51 similar to that of the first embodiment, and a metal lamp main body 52b in which the discharge lamp 1, the socket 2a and the reflector 3 are housed. The lamp body 52b is formed in a box shape with a front opening closed by the lens 51, has an opening 521b on the lower side with respect to the discharge lamp 1, and is closed by a bulb cover 4b on the rear center side. Another opening 52
2b. Also, the opening 52 of the lamp body 52b
A plurality of screw holes for screws S are formed near 1b. Further, a through hole 523b for connecting the lighting device 62a and the coupler 8b is formed in the lower rear side of the lamp body 52b.

The lighting unit 6b has a structure in which a lighting device 62a similar to the first embodiment and a closing member 61b different from the first embodiment are integrally provided. Closing member 6
As shown in FIG. 3, the lamp body 1 b is formed in a box shape that opens upward, has a fitting part 611 b fitted into the opening 521 b on the upper side, and is slightly larger than the fitting part 611 b, and A lower portion has a protruding portion 612b whose side surface and lower surface protrude downward from the outer surface of 52b. Also,
The closing member 61b has two protruding pieces 614b in which insertion holes 613b for screws S are drilled on both sides in front of the upper end of the protruding portion 612b, and similarly, the insertion holes 6 for screws S on the rear center side.
13b has one protruding piece 614b. It is needless to say that the number of the protruding pieces 614b is not limited to three but may be two or more.

However, the lighting device 62a includes the closing member 61
b and stored in the socket 2 via the cable W1.
a, and the coupler 8b is connected via a two-wire cable W2.

The elastic member 7b is provided between the lamp 5b and the closing member 61.
b, and a ring-shaped rubber material that seals between them. Further, the elastic member 7b is provided with a protrusion 612b.
Is affixed to the step surface generated at the top of the.

The coupler 8b is finally electrically connected to the vehicle-mounted battery and is used for input power to the lighting device 62a, and is attached to the outer surface of the lamp body 52b having the through hole 523b. If a connector is provided on the lighting device 62a side of the cable W2, the socket 2a, the cable W1, the lighting unit 6b, and the elastic member 7b can be handled as one component. Alternatively, if a connector is provided on the coupler 8b side of the cable W2, a set such as the socket 2a, the cable W1, the lighting unit 6b, the elastic member 7b, and the cable W2 can be handled as one component.

Next, an example of the order of assembling the lighting unit 6b to the lamp 5b will be described. First, the coupler 8b is connected to the lighting device 62a, and the fitting portion 611b of the lighting unit 6b is fitted into the opening 521b of the lamp body 52b with the lighting device 62a facing upward. The lighting unit 6b is screwed to the lamp body 52b.

Thereafter, the discharge lamp 1 is inserted through the hole of the reflector 3 into the concave surface and attached to the rearmost part of the reflector 3.

Thereafter, the socket 2a is mounted on the electrode of the discharge lamp 1, and subsequently, the bulb cover 4b is connected to the opening 522b.
To the outer surface of the lamp body 52b having As a result, the interior of the lamp 5b is closed.

As described above, the lighting unit 6b is constituted by the closing member 61b formed in a shape for closing the opening 521b of the lamp 5b and the lighting device 62a attached to the inner surface of the closing member 61b. By using the elastic member 7b interposed between the lighting device 62a and the lighting device 62b, the lighting device 62a and the lamp 5b do not need any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

FIG. 4 is a sectional view showing a lighting device according to a third embodiment of the present invention, and the third embodiment will be described below with reference to FIG.

The lighting device shown in FIG. 4 has a discharge lamp 1, a socket 2a, a reflector 3, a bulb cover 4b, a lamp 5b,
An elastic member 7b and a coupler 8b are provided similarly to the second embodiment, and as a difference from the second embodiment, a lighting unit 6c and an igniter 9c are provided.

The lighting unit 6c has a structure in which a closing member 61b similar to the second embodiment and a lighting device 62c different from the second embodiment are integrally provided. Lighting device 6
2c has the same configuration as the lighting device 62a of the second embodiment except that it does not include an igniter.

The igniter 9c starts the discharge lamp 1, and is provided between the socket 2a and the lighting unit 6c. In the example of FIG. 4, the igniter 9c is provided inside the valve cover 4b, and is electrically connected to each connection terminal of the socket 2a via, for example, a two-wire cable W11. It is electrically connected to the output of the lighting device 62c via W12. In addition,
If the cables W11 and W12 are configured to be detachable as in the second embodiment, a desired set can be handled as one component. For example, if a connector is provided on the igniter 9c side of the cable W12, the socket 2
a, the cable W11, the igniter 9c, and the valve cover 4b can be handled as one component.

Next, an example of an assembling order of the lighting unit 6c to the lamp 5b will be described. First, the coupler 8b is connected to the lighting device 62c, the fitting portion 611b of the lighting unit 6c is fitted into the opening 521b of the lamp body 52b with the lighting device 62c facing upward, and subsequently, using a plurality of screws S. The lighting unit 6c is screwed to the lamp body 52b.

Thereafter, the discharge lamp 1 is inserted into the concave surface through the hole of the reflector 3 and attached to the rearmost part of the reflector 3.

Thereafter, the lighting device 62c and the igniter 9c are connected via the cable W12, the socket 2a is mounted on the electrode of the discharge lamp 1, and then the bulb cover 4b
Is attached to the outer surface of the lamp body 52b having the opening 522b. As a result, the interior of the lamp 5b is closed.

As described above, the lighting unit 6c is constituted by the closing member 61b formed to close the opening 521b of the lamp 5b and the lighting device 62c attached to the inner surface of the closing member 61b. By using the elastic member 7b interposed between the lighting device 62c and the lighting device 5b, neither the overlapping waterproof structure nor the waterproof-only cover is required.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62c does not need to have a waterproof structure, the total cost can be reduced.

FIG. 5 is a sectional view showing a lighting device according to a fourth embodiment of the present invention. The fourth embodiment will be described below with reference to FIG.

The lighting device shown in FIG. 5 includes a discharge lamp 1, a reflector 3, a bulb cover 4b, a lamp 5b, and a lighting unit 6.
c, the elastic member 7b and the coupler 8b are provided in the same manner as in the third embodiment, and a difference from the third embodiment is a socket 2d. However, the output of the lighting device 62c is electrically connected to each connection terminal of the socket 2d via the cable W1.

The socket 2d houses an igniter (not shown) provided between each connection terminal of the socket 2d and each electrode of the discharge lamp 1.

Next, an example of the order of assembling the lighting unit 6c to the lamp 5b will be described. First, the coupler 8b is connected to the lighting device 62c, the fitting portion 611b of the lighting unit 6c is fitted into the opening 521b of the lamp body 52b with the lighting device 62c facing upward, and subsequently, using a plurality of screws S. The lighting unit 6c is screwed to the lamp body 52b.

Thereafter, the discharge lamp 1 is inserted into the concave surface through the hole of the reflector 3 and attached to the rearmost portion of the reflector 3.

Thereafter, the socket 2d is mounted on the electrode portion of the discharge lamp 1, and then the bulb cover 4b is connected to the opening 522b.
To the outer surface of the lamp body 52b having As a result, the interior of the lamp 5b is closed.

As described above, the lighting unit 6c is constituted by the closing member 61b formed in a shape for closing the opening 521b of the lamp 5b and the lighting device 62c attached to the inner surface of the closing member 61b. By using the elastic member 7b interposed between the lighting device 62c and the lamp 5b without using any of the overlapping waterproof structure and the waterproof-only cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62c does not need to have a waterproof structure, the total cost can be reduced.

FIG. 6 is a sectional view showing a lighting device according to a fifth embodiment of the present invention, and the fifth embodiment will be described below with reference to FIG.

The illumination device shown in FIG. 6 includes a discharge lamp 1, a socket 2a, a reflector 3, and an elastic member 7a in the same manner as in the first embodiment. A lighting unit 6e and a coupler 8e are provided. H is a wiring harness.

The lamp 5e comprises a lens 51 similar to that of the first embodiment, and a metal lamp body 52e for housing the discharge lamp 1, the socket 2a and the reflector 3 therein. The lamp body 52e is formed in a box shape with a front opening closed by the lens 51, and has an opening 521e over a wide range both on the upper rear side and the lower rear side with respect to the discharge lamp 1. I have. Also, the lamp body 52e
A plurality of screw holes for the screw S are formed near the opening 521e.

The lighting unit 6e has a lighting device 62a similar to that of the first embodiment and a closing member 61e different from that of the first embodiment. Closing member 6
1e is formed by a metal plate or the like having a shielding effect so as to close the opening 521e of the lamp body 52e, specifically, has an L-shaped cross section such that one surface faces downward and the other surface faces forward. The discharge lamp 1 has a fitting step 611e at each of the upper and rear edges. Further, a plurality of insertion holes (not shown) for screws S are formed in each fitting step 611e of the closing member 61e. An elastic member 7a is attached to the inner surface of the edge of each fitting step 611e. Further, a through hole 615e for connecting the lighting device 62a and the coupler 8e is formed in the mounting surface of the lighting device 62a in the closing member 61e.

However, the lighting device 62a includes the closing member 61
e, and the output is electrically connected to each connection terminal of the socket 2a via the cable W1.

The coupler 8e is finally electrically connected to the on-vehicle battery and is used for input power to the lighting device 62a. The coupler 8e is attached to the outer surface of the closing member 61e having the through hole 615e, It is electrically connected to the lighting device 62a through 615e.

Next, an example of the order of assembling the lighting unit 6e to the lamp 5e will be described. First, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3 and attached to the rearmost part of the reflector 3, and then the socket 2a is attached to the electrode portion of the discharge lamp 1.

Thereafter, the lighting unit 6e is connected to the lamp body 52.
Then, the lighting unit 6e is screwed to the lamp body 52e using a plurality of screws S. As a result, the interior of the lamp 5e is closed.

As described above, the lighting unit 6e is constituted by the closing member 61e formed into a shape for closing the opening 521e of the lamp 5e and the lighting device 62a attached to the inner surface of the closing member 61e. By using the elastic member 7a interposed between the lighting device 62e and the lighting device 62e, the lighting device 62a and the lamp 5e do not need any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

The closing member 61e of the lighting unit 6e
Also serves as a valve cover, so that the number of parts can be reduced. Further, since the closing member 61e of the lighting unit 6e is arranged on the rear upper side, the replacement work of the discharge lamp 1 is facilitated. Further, since the coupler 8e is connected to the lighting device 62a through the through hole 615e, the through hole 615e
Just adopt a waterproof structure only for the part of
More suitable waterproofing in the lamp 5e becomes possible.

FIG. 7 is a sectional view showing a lighting device according to a sixth embodiment of the present invention. The sixth embodiment will be described below with reference to FIG.

The lighting device shown in FIG. 7 has a discharge lamp 1, a socket 2a, a reflector 3, an elastic member 7a and a coupler 8e.
Is provided in the same manner as in the fifth embodiment, and as a difference from the fifth embodiment, a lamp 5f and a lighting unit 6f are provided.

The lamp 5f includes a lens 51 similar to that of the fifth embodiment, and a metal lamp main body 52f that houses the discharge lamp 1, the socket 2a and the reflector 3 therein. The lamp main body 52f is formed in a box shape with a front opening closed by the lens 51, and has an opening 521f in a wide range over both the lower rear side and the rear upper side of the discharge lamp 1. I have. Also, the lamp body 52f
A plurality of screw holes for the screw S are formed in the vicinity of the opening 521f.

The lighting unit 6f has a structure in which a lighting device 62a similar to the fifth embodiment and a closing member 61f different from the fifth embodiment are integrally provided. Closing member 6
1f is formed by a metal plate or the like having a shielding effect so as to close the opening 521f of the lamp body 52f, specifically, has an L-shaped cross section such that one surface faces upward and the other surface faces forward. Each of the lower and rear edges of the discharge lamp 1 has a fitting step 611f. A plurality of insertion holes (not shown) for screws S are formed in each fitting step 611f of the closing member 61f. An elastic member 7a is attached to the inner surface of the edge of each fitting step 611f. Further, a through-hole 615f for connecting the lighting device 62a and the coupler 8e is formed in the mounting surface of the lighting device 62a in the closing member 61f, and the coupler 8e is mounted on the outer surface of the closing member 61f having the through-hole 615f. And the connection terminals of the coupler 8e and the lighting device 6 through the through holes 615f.
2a is electrically connected to each power supply terminal.

However, the lighting device 62a includes the closing member 61
f, and the output is electrically connected to each connection terminal of the socket 2a via the cable W1.

Next, an example of an assembling order of the lighting unit 6f to the lamp 5f will be described. First, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3 and attached to the rearmost part of the reflector 3, and then the socket 2a is attached to the electrode portion of the discharge lamp 1.

Thereafter, the lighting unit 6f is connected to the lamp body 52.
Then, the lighting unit 6f is screwed to the lamp body 52f using a plurality of screws S. As a result, the interior of the lamp 5f is closed.

As described above, the lighting unit 6f is constituted by the closing member 61f formed so as to close the opening 521f of the lamp 5f and the lighting device 62a attached to the inner surface of the closing member 61f. By using the elastic member 7a interposed between the lighting device 62a and the lighting device 62f, the lighting device 62a and the lamp 5f do not require any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

The lighting device 62a includes a closing member 61f.
Is attached to one surface facing upward, so that it is difficult to receive radiant heat from the discharge lamp 1.

The closing member 61f of the lighting unit 6f
Also serves as a valve cover, so that the number of parts can be reduced. Further, since the coupler 8e is connected to the lighting device 62a through the through hole 615f, more suitable waterproofing in the lamp 5f can be achieved only by adopting a further waterproof structure only for the through hole 615f.

FIG. 8 is a sectional view showing a lighting device according to a seventh embodiment of the present invention, and FIG. 9 is a diagram showing a lighting unit and the like in FIG. 8, and the following description of the seventh embodiment will be made with reference to these drawings. I do.

The lighting device shown in FIG. 8 includes a discharge lamp 1, a socket 2a, a reflector 3, a bulb cover 4b, a lamp 5b, and an elastic member 7b as in the second embodiment. The difference is that the lighting unit 6g
And a coupler 8g.

The lighting unit 6g has a lighting device 62a similar to that of the second embodiment and a closing member 61g different from that of the second embodiment. Closing member 6
As shown in FIG. 9, 1g is a box-like shape that opens upward, is formed in a size that can be fitted into the opening 521b of the lamp body 52b, and has a flange 616g that is provided around the middle of the side surface. . On the outer periphery of the flange 616g, two and one protruding pieces 614g each having a through hole 613g for a screw S are formed on both sides on the front side and on the center side on the rear side. An elastic member 7b is attached to the upper surface of the flange 616g. Furthermore, the closing member 6 below the flange 616g
A through hole for connection between the lighting device 62a and the coupler 8g is formed in the side surface of 1g.

The coupler 8g is used as an input power source for the lighting device 62a. As shown in FIG. 9B, the coupler 8g is attached to the outer side surface of the closing member 61g having the through hole, and is turned on through the through hole. It is electrically connected to the device 62a.

Next, an example of an assembling order of the lighting unit 6g to the lamp 5b will be described. First, with the lighting device 62a side facing upward, the lighting unit 6g is fitted into the opening 521b of the lamp body 52b until the upper surface of the flange 616g hits,
Subsequently, the lighting unit 6g is screwed to the lamp body 52b using a plurality of screws S.

After that, the discharge lamp 1 is inserted through the hole of the reflector 3 into the concave surface and attached to the rearmost part of the reflector 3.

Thereafter, the socket 2a is mounted on the electrode of the discharge lamp 1, and subsequently, the bulb cover 4b is connected to the opening 522b.
To the outer surface of the lamp body 52b having As a result, the interior of the lamp 5b is closed.

As described above, the lighting unit 6g is constituted by the closing member 61g formed in a shape for closing the opening 521b of the lamp 5b and the lighting device 62a attached to the inner surface of the closing member 61g. By using the elastic member 7b interposed between the lighting device 62a and the lighting device 6b, the lighting device 62a and the lamp 5b do not require any of the overlapping waterproof structure and the waterproof-only cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

Further, the flange 616g of the lighting unit 6g
Is projected outward, the internal heat can be appropriately radiated to the outside at the projected portion. Note that this effect can also be achieved in the second embodiment.

FIG. 10 is a sectional view showing a lighting device according to an eighth embodiment of the present invention, and FIG. 11 is a diagram showing a lighting unit and the like in FIG. 10, and the eighth embodiment will be described below with reference to these drawings. I do.

The illuminating device shown in FIG. 10 includes a discharge lamp 1, a socket 2a, a reflector 3, and a coupler 8e in the same manner as the fifth embodiment. Unit 6h and elastic member 7h
It has.

The lamp 5h includes a lens 51 similar to that of the fifth embodiment, and a metal lamp main body 52h that houses the discharge lamp 1, the socket 2a and the reflector 3 therein. The lamp body 52h is formed in a box shape with a front opening closed by the lens 51, and has a circular opening 521h on the rear side with respect to the discharge lamp 1. A plurality of screw holes for the screws S are formed near the opening 521h of the lamp body 52h.

The lighting unit 6h has a structure in which a lighting device 62a similar to the fifth embodiment and a closing member 61h different from the fifth embodiment are integrally provided. Closing member 6
1h is formed in a shape that closes the opening 521h of the lamp body 52h by a metal plate or the like having a shielding effect, specifically, in a box shape having a front opening (in FIGS. 10 and 11, a bottomed cylindrical shape). It has a flange 616h provided around the edge. Further, a plurality of protruding pieces 614h in which an insertion hole 613h for the screw S is formed are continuously provided on the outer peripheral portion of the flange 616h while being spaced apart from each other. Further, a through hole (not shown) for connecting the lighting device 62a and the coupler 8e is formed in a mounting surface of the lighting device 62a in the closing member 61h, and a coupler is formed on an outer surface of the closing member 61h having the through hole. 8e is attached, and each connection terminal of the coupler 8e is electrically connected to a power terminal of the lighting device 62a through the through hole.

The elastic member 7h includes a lamp 5h and the lamp 5h.
And a sealing member 61h for closing the opening 521h. The sealing member 61h is a rubber material or the like that seals between them, and is attached to the front surface of the flange 616h.

Next, an example of the order of assembling the lighting unit 6h to the lamp 5h will be described. First, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3 and attached to the rearmost part of the reflector 3, and then the socket 2a is attached to the electrode portion of the discharge lamp 1.

Thereafter, the lighting unit 62a is turned forward, and the lighting unit 6h is used to open the opening 521 of the lamp body 52h.
Then, the lighting unit 6h is screwed to the lamp body 52h using a plurality of screws S. This allows
The interior of the lamp 5h is closed.

As described above, the lighting unit 6h is constituted by the closing member 61h formed in a shape for closing the opening 521h of the lamp 5h and the lighting device 62a attached to the inner surface of the closing member 61h. By using the elastic member 7h interposed between the lighting device 62h and the lighting device 62h, the lighting device 62a and the lighting device 5h do not require any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

The closing member 61h of the lighting unit 6h
Also serves as a valve cover, so that the number of parts can be reduced. In addition, since the closing member 61h of the lighting unit 6h is disposed rearward, the replacement work of the discharge lamp 1 is facilitated.
Further, since the coupler 8e is connected to the lighting device 62a through the through-hole of the closing member 61h, only the waterproof structure is adopted for only the through-hole, and the lamp 5h
More suitable waterproofing becomes possible.

FIG. 12 is a cross-sectional view showing a lighting device according to a ninth embodiment of the present invention, and FIG. 13 is a diagram showing a lighting unit and the like in FIG. 12. The ninth embodiment will be described below with reference to these drawings. I do.

The lighting device shown in FIG. 12 has a discharge lamp 1, a socket 2a, a reflector 3, a lamp 5h and an elastic member 7h.
Is provided in the same manner as in the eighth embodiment, and a lighting unit 6i is provided as a different point from the eighth embodiment.

This lighting unit 6i has a structure in which a lighting device 62a similar to that of the eighth embodiment and a closing member 61i different from that of the eighth embodiment are integrally provided. The closing member 61i is formed in a shape of closing the opening 521h of the lamp body 52h by a metal plate or the like having a shielding effect, specifically, in a box shape with a front opening (a bottomed cylindrical shape in FIGS. 12 and 13). And a flange 616i provided in the middle of the side surface. Further, a plurality of protruding pieces 614i each having an insertion hole 613i for the screw S are continuously provided on the outer peripheral portion of the flange portion 616i in a state of being separated from each other. An elastic member 7h is attached to the front surface of the flange 616i. Further, a through hole (not shown) for connecting the lighting device 62a and the coupler 8e is formed in a mounting surface of the lighting device 62a in the closing member 61i, and a coupler is formed on an outer surface of the closing member 61i having the through hole. 8e is attached, and the coupler 8e is inserted through the through hole.
Are electrically connected to the power supply terminal of the lighting device 62a.

Next, an example of the order of assembling the lighting unit 6i to the lamp 5h will be described. First, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3 and attached to the rearmost part of the reflector 3, and then the socket 2a is attached to the electrode portion of the discharge lamp 1.

Thereafter, the lighting unit 62a is turned forward, and the lighting unit 6i is used to open the opening 521 of the lamp body 52h.
Then, the lighting unit 6i is screwed to the lamp body 52h using a plurality of screws S. This allows
The interior of the lamp 5h is closed.

As described above, the lighting unit 6i is constituted by the closing member 61i formed in a shape for closing the opening 521h of the lamp 5h and the lighting device 62a attached to the inner surface of the closing member 61i. By using an elastic member 7h interposed between the lighting device 62i and the lighting device 62a, the lighting device 62a and the lighting device 5h do not require any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

The closing member 61i of the lighting unit 6i
Also serves as a valve cover, so that the number of parts can be reduced. Further, since the closing member 61i of the lighting unit 6i is disposed at the rear, the replacement work of the discharge lamp 1 is facilitated.
Further, since the coupler 8e is connected to the lighting device 62a through the through-hole of the closing member 61i, only the waterproof structure is applied to only the portion of the through-hole, and the lamp 5h
More suitable waterproofing becomes possible.

FIG. 14 is a sectional view showing a lighting device according to a tenth embodiment of the present invention, and FIG. 15 is a diagram showing a lighting unit and the like in FIG. 14.
An embodiment will be described.

The lighting device shown in FIG. 14 has a discharge lamp 1, a socket 2a, a reflector 3, an elastic member 7h, and a coupler 8
e is provided in the same manner as in the eighth embodiment, and the difference from the eighth embodiment is that the lamp 5j and the lighting unit 6j
It has.

The lamp 5j comprises a lens 51 similar to that of the eighth embodiment, and a metal lamp main body 52j in which the discharge lamp 1, the socket 2a and the reflector 3 are housed. The lamp body 52j is formed in a box shape with a front opening closed by the lens 51, and has a circular opening 521j on the rear side of the discharge lamp 1. The opening 5
A groove (not shown) for inserting a bent protruding piece 617j to be described later is connected to 21j.

The lighting unit 6j includes a lighting device 62a similar to that of the eighth embodiment and a closing member 61j different from that of the eighth embodiment. Closing member 6
1j is formed by a metal plate or the like having a shielding effect so as to close the opening 521j of the lamp body 52j, specifically, in a box shape having a front opening (in FIGS. 14 and 15, a bottomed cylindrical shape). It has a flange 616j provided around the edge. Further, the closing member 61j is formed with a plurality of bent protruding pieces 617j extending forward from the base side of the flange portion 616j and bending outwardly in a state of being separated from each other. An elastic member 7h is attached to the front surface of the flange 616j.
Further, a through hole (not shown) for connecting the lighting device 62a and the coupler 8e is formed in a mounting surface of the lighting device 62a in the closing member 61j, and a coupler is formed on an outer surface of the closing member 61j having the through hole. 8e is attached, and each connection terminal of the coupler 8e is electrically connected to a power terminal of the lighting device 62a through the through hole.

Next, an example of an assembling order of the lighting unit 6j to the lamp 5j will be described. First, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3 and attached to the rearmost part of the reflector 3, and then the socket 2a is attached to the electrode portion of the discharge lamp 1. Thereafter, the lighting unit 6j is turned to the front with the lighting device 62a side facing the opening 521j of the lamp body 52j. Thus, the interior of the lamp 5j is closed.

As described above, the lighting unit 6j is constituted by the closing member 61j formed in a shape for closing the opening 521j of the lamp 5j and the lighting device 62a attached to the inner surface of the closing member 61j. By using the elastic member 7h interposed between the lighting device 62j and the lighting device 62j, the lighting device 62a and the lamp 5j do not require any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

Further, since it is not necessary to use the screw S when assembling the lighting unit 6j to the lamp 5j, the number of parts can be reduced and the assembling work is facilitated.

Further, the closing member 61j of the lighting unit 6j
Also serves as a valve cover, so that the number of parts can be reduced. Further, since the closing member 61j of the lighting unit 6j is disposed rearward, the replacement work of the discharge lamp 1 is facilitated.
Further, since the coupler 8e is connected to the lighting device 62a through the through-hole of the closing member 61j, only the waterproof structure is adopted for only the portion of the through-hole, and the lamp 5j
More suitable waterproofing becomes possible.

FIG. 16 is a sectional view showing an illuminating device according to an eleventh embodiment of the present invention, and FIG. 17 is a diagram showing a lighting unit and the like in FIG. 16.
An embodiment will be described.

The illumination device shown in FIG. 16 includes a discharge lamp 1, a reflector 3, a lamp 5j, an elastic member 7h, and a coupler 8e in the same manner as in the tenth embodiment. It has a socket 2k and a lighting unit 6k.

The socket 2k has connection terminals electrically connected to the respective electrodes of the discharge lamp 1, and these connection terminals are electrically connected to an output of a lighting device 62a described later, for example, by mounting. It is provided in the lighting unit 6k.

The lighting unit 6k has a structure in which a lighting device 62a similar to the tenth embodiment and a closing member 61k different from the tenth embodiment are integrally provided. The closing member 61k is formed in a shape of closing the opening 521j of the lamp body 52j by a metal plate or the like having a shielding effect, specifically, in a box shape having a front opening (a bottomed cylindrical shape in FIGS. 16 and 17). And a flange 616k provided around the rear edge of the side wall, and a plurality of projecting pieces 617k projecting outward from the front edge of the side wall in a state of being separated from each other. An elastic member 7h is attached to the front surface of the flange 616k. Further, a through hole (not shown) for connecting the lighting device 62a and the coupler 8e is formed in a mounting surface of the lighting device 62a in the closing member 61k, and a coupler is formed on an outer surface of the closing member 61k having the through hole. The connection terminals of the coupler 8e are electrically connected to the power supply terminals of the lighting device 62a through the through holes.

In short, the lighting unit 6k is configured to integrally include the socket 2k, the closing member 61k, the lighting device 62a, the elastic member 7h, and the coupler 8e.

Next, an example of the order of assembling the lighting unit 6k to the lamp 5j will be described. First, the discharge lamp 1 is inserted into the concave surface from the hole of the reflector 3 and attached to the rear end of the reflector 3.

Thereafter, the lighting unit 6k is connected to the lamp body 5 by attaching the socket 2a to the electrode portion of the discharge lamp 1.
2j is rotationally fitted into the opening 521j. Thus, the interior of the lamp 5j is closed.

As described above, the lighting unit 6k is constituted by the closing member 61k formed in a shape for closing the opening 521j of the lamp 5j and the lighting device 62a attached to the inner surface of the closing member 61k. By using the elastic member 7h interposed between the lighting device 62a and the lighting device 62k, the lighting device 62a and the lamp 5j do not require any of the overlapping waterproof structure and the waterproof exclusive cover.
Both of them can be waterproofed. This makes it possible to reduce the number of components and simplify the waterproof mechanism. Further, since the lighting device 62a does not need to have a waterproof structure, the total cost can be reduced.

Further, since there is no need to use the screw S when assembling the lighting unit 6k to the lamp 5j, the number of parts can be reduced and the assembling work is facilitated.

The closing member 61k of the lighting unit 6k
Also serves as a valve cover, so that the number of parts can be reduced. Further, since the closing member 61k of the lighting unit 6k is disposed at the rear, the replacement work of the discharge lamp 1 is facilitated.
Further, since the coupler 8e is connected to the lighting device 62a through the through hole of the closing member 61k, the lamp 5j can be obtained only by adopting a waterproof structure only for the through hole.
More suitable waterproofing becomes possible.

In the first to eleventh embodiments, the lighting device may be configured to be attached to the closing member without changing the board on which the necessary components are mounted, or
It may be configured to be housed in a predetermined case and attached to the closing member. In the latter case, needless to say, the case does not need to be waterproof.

[0126]

As is apparent from the above, according to the first aspect of the present invention, a discharge lamp, a socket electrically connected to the discharge lamp, and an opening are partially provided. A lamp for accommodating the discharge lamp and the socket therein, a closing member formed in a shape for closing an opening of the lamp, and lighting of the discharge lamp attached to a surface of the closing member facing the inside of the lamp; And a resilient member interposed between the lamp and the closing member for closing the opening of the lamp and sealing the space therebetween, so that the waterproof structure and the waterproof structure overlap. It is possible to waterproof both the lighting device and the lamp without requiring any dedicated cover.

According to a second aspect of the present invention, in the lighting device according to the first aspect, the lamp has a box-like shape having a lens disposed in front of the discharge lamp and a front opening closed by the lens. The discharge lamp and the socket are housed inside the lamp body, and in this case also, the lamp is turned on without requiring any of the overlapping waterproof structure and the waterproof-only cover. Waterproofing of both the device and the lamp is enabled.

According to the third aspect of the present invention, the lighting device according to the first or second aspect further comprises a bulb cover,
The lamp has another opening that is closed by the bulb cover, and in this case also, the waterproofing of both the lighting device and the lamp inside the lamp does not require any of the overlapping waterproof structure and the waterproof-only cover. Becomes possible.

According to a fourth aspect of the present invention, in the lighting device according to the second aspect, the lamp body has the opening in a range extending both below and behind the discharge lamp. The closing member is formed in an L-shaped cross section such that one surface faces upward and the other surface faces forward, and the lower surface of the opening is closed by the one surface and the other surface is closed by the other surface. Since the rear side of the opening is closed and the lighting device is attached to the one surface, the lighting device can be made hard to receive radiant heat from the discharge lamp.

According to the invention set forth in claim 5, claims 1 to 1 are provided.
5. The lighting device according to any one of 4 to 4, further comprising an input power coupler attached to an outer surface of the closing member and electrically connected to the lighting device through a through hole formed in the closing member. Also in this case, it is possible to waterproof both the lighting device and the lamp without needing any of the redundant waterproof structure and the waterproof cover.

According to the invention as set forth in claim 6, in the lighting apparatus as set forth in claim 2 or 3, the lamp body has the opening for closing the closing member below the discharge lamp. The closing member is formed in a box shape that opens upward, and a side surface and a lower surface protrude downward from an outer surface of the lamp body in the vicinity of the opening in which the closing member closes. Since it is stored inside the member, the heat inside the lighting unit can be appropriately released to the outside.

According to the seventh aspect of the present invention, in the lighting device according to the second or fourth aspect, the lamp body has the opening at a rear side with respect to the discharge lamp, and the closing member has the opening. Since it also serves as a bulb cover for attaching and detaching a light, the number of parts can be reduced.

According to an eighth aspect of the present invention, in the lighting device of the seventh aspect, the socket is provided integrally with the lighting unit.
It is possible to waterproof both the lighting device and the lamp without requiring any of the overlapping waterproof structure and the waterproof exclusive cover.

According to the ninth aspect of the present invention, the first to fifth aspects are described.
8. The lighting device according to any one of 8 to 8, further comprising an igniter for starting the discharge lamp, wherein the lighting device is electrically connected to the socket via the igniter. It is possible to waterproof both the lighting device and the lamp without requiring any of the waterproof structure and the waterproof cover.

According to the tenth aspect, the ninth aspect is provided.
In the lighting device described above, the igniter is provided integrally with the lighting device, and in this case also, both the lighting device and the inside of the lamp do not require any of the overlapping waterproof structure and the waterproof-only cover. Waterproofing becomes possible.

According to the eleventh aspect, according to the ninth aspect,
In the lighting device described in the above, the igniter is provided integrally with the socket, and in this case also, the waterproofing of both the lighting device and the lamp is unnecessary without the need of any of the overlapping waterproof structure and the waterproof-only cover. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a lighting device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a lighting device according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a lighting unit and the like in FIG. 2;

FIG. 4 is a sectional view showing a lighting device according to a third embodiment of the present invention.

FIG. 5 is a sectional view showing a lighting device according to a fourth embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a lighting device according to a fifth embodiment of the present invention.

FIG. 7 is a cross-sectional view illustrating a lighting device according to a sixth embodiment of the present invention.

FIG. 8 is a sectional view showing a lighting device according to a seventh embodiment of the present invention.

9 is a diagram showing a lighting unit and the like in FIG. 8;

FIG. 10 is a sectional view showing a lighting device according to an eighth embodiment of the present invention.

11 is a diagram illustrating a lighting unit and the like in FIG. 10;

FIG. 12 is a sectional view showing a lighting device according to a ninth embodiment of the present invention.

FIG. 13 is a diagram showing a lighting unit and the like in FIG. 12;

FIG. 14 is a sectional view showing a lighting device according to a tenth embodiment of the present invention.

FIG. 15 is a diagram showing a lighting unit and the like in FIG. 14;

FIG. 16 is a sectional view showing a lighting device according to an eleventh embodiment of the present invention.

FIG. 17 is a diagram showing a lighting unit and the like in FIG. 16;

FIG. 18 is a cross-sectional view of a conventional lighting device.

FIG. 19 is a diagram showing a lighting device and the like in FIG. 18;

FIG. 20 is a cross-sectional view of another conventional lighting device.

FIG. 21 is a diagram showing a lighting device and the like in FIG. 20;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Discharge lamp 2a, 2d socket 3 Reflector 4a, 4b Valve cover 5a, 5b, 5e, 5f, 5h, 5j Lamp 51 Lens 52a, 52b, 52e, 52f, 52h, 52j Lamp main body 521a, 521b, 521e, 521f, 521h ,
521j Openings 6a-6c, 6e-6k Lighting units 61a, 61b, 61e-61k Closing members 62a, 62c Lighting devices 7a, 7b, 7h Elastic members 8b, 8e, 8g Couplers 9c Igniters

Claims (11)

[Claims] A discharge lamp; a socket electrically connected to the discharge lamp; a lamp having an opening in a part thereof and accommodating the discharge lamp and the socket therein; and an opening of the lamp. A closing unit formed into a closed shape, a lighting unit attached to a surface of the closing member facing the interior of the lamp, and a lighting unit configured by a lighting device for lighting the discharge lamp; and the lamp and an opening of the lamp. A lighting device comprising: an elastic member interposed between the closing member and the sealing member to seal the space therebetween. 2. The lamp comprises a lens disposed in front of the discharge lamp and a lamp body formed in a box shape having a front opening closed by the lens, and the discharge lamp and the socket are provided with the lamp. The lighting device according to claim 1, which is housed inside the main body. 3. The lighting device according to claim 1, further comprising a bulb cover, wherein the lamp has another opening closed by the bulb cover. 4. The lamp body has the opening in a range extending to both a lower side and a rear side with respect to the discharge lamp, and the closing member has one surface facing upward and the other surface facing upward. The lighting device is formed in an L-shaped cross-section so as to face forward, closing the lower side of the opening with the one surface and closing the rear side of the opening with the other surface. The lighting device according to claim 2, wherein the lighting device is attached to a surface. 5. An input power supply coupler attached to an outer surface of the closing member and electrically connected to the lighting device through a through hole formed in the closing member.
The lighting device according to any one of the above. 6. The lamp body has the opening for closing the closing member on a lower side with respect to the discharge lamp, and the closing member is formed in a box shape that opens upward. The lighting device according to claim 2, wherein a side surface and a lower surface protrude downward from an outer surface of the lamp body in the vicinity of the opening in which the lighting device is closed, and the lighting device is housed inside the box-shaped closing member. 7. The lighting device according to claim 2, wherein the lamp body has the opening behind the discharge lamp, and the closing member also serves as a bulb cover for attaching and detaching the discharge lamp. 8. The lighting device according to claim 7, wherein the socket is provided integrally with the lighting unit. 9. The lighting device according to claim 1, further comprising an igniter for starting the discharge lamp, wherein the lighting device is electrically connected to the socket via the igniter. 10. The lighting device according to claim 9, wherein the igniter is provided integrally with the lighting device. 11. The lighting device according to claim 9, wherein the igniter is provided integrally with the socket.