JP2007134158A - Illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to use a halogen lamp with a view to making a lamp downsized, lightweighted, and of high luminance, to make it hard to be thermally damaged and rich in durability in the case of using the halogen lamp, and enable to provide it at a low cost. <P>SOLUTION: This is the illumination device equipped with the light source body and an adaptor 11 used in arranging and installing the light source body at a socket. The light source body is the halogen lamp body 1, the adaptor 11 is made of a resin, and constituted so that there is a gap between the adaptor tip and the sealing part tip of the halogen lamp body in a state that the halogen lamp body 1 is mounted on the adaptor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illuminating device, in particular, an illuminating device for an automobile, and more particularly to an illuminating device for an automobile back operation.

  For example, various illuminating devices have been proposed as illuminating devices for automobiles, particularly as illuminating devices for back operation. This type of lighting device is sometimes used for automobiles, and is being reduced in size and weight. However, generally speaking, miniaturization / lightening and illuminance are in a proportional relationship. For example, as the lighting device becomes smaller, the brightness illuminated by the lighting device decreases. Therefore, there is a limit to reducing the size and weight.

  There are various types of lamps. For example, halogen lamps are well known. Although this halogen lamp is a kind of incandescent lamp, a small amount of halogen group element (I, Br, CI, F) gas is enclosed in the glass bulb of the halogen lamp in addition to the inert gas. The halogen lamp has a life that is approximately twice that of a general light bulb due to the halogen cycle. In addition, since evaporated tungsten does not adhere to the tube wall of the bulb, there is no light beam attenuation due to the blackening of the bulb, and it has a feature that it is bright light until the end. That is, when a current flows and the W filament becomes high temperature, tungsten atoms evaporate from the W filament and combine with halogen atoms in the enclosed halogen gas to form tungsten halide. This molecule floats in the bulb and separates into halogen and tungsten atoms near the hot filament. Then, the tungsten atom returns to the filament again, and the released halogen atom repeats the previous reaction. This series of reactions is a “halogen cycle”, which has the feature that the blackening of the bulb wall is suppressed and the filament is prevented from being consumed. The halogen lamp is very compact with a volume ratio of about 1/200 compared to the same 100 W incandescent bulb.

  Therefore, if a halogen lamp having such a great feature as described above was adopted as an automobile lighting device, it seemed to work well because it was both compact and lightweight and had a long life.

  However, it has been found that halogen lamps also have problems. That is, the amount of heat generation is large. That is, it is known that the calorific value is larger than that of an incandescent bulb. This can be easily inferred from the recent widespread use of halogen heaters that use light emitted from halogen lamps as heat. That is, there is a problem that the socket side is easily damaged by simply inserting the halogen lamp into the socket. Moreover, in the case of automobiles, since the socket is fixed to the automobile body, if the socket is damaged, it is difficult to repair or replace the socket. It is not simply a simple task such as lamp replacement.

  By the way, the tube of the halogen lamp employs hard glass such as quartz glass because of its characteristics. For this reason, fine processing is very difficult. The fact that this processing is difficult causes the following problems. In current automobile lighting devices, the lamp is plugged into a socket. However, it is not simply said that it is plugged in, and means for preventing dropping is taken. That is, since various vibrations act on the automobile during travel, the lamp is prevented from falling off so that the lamp cannot be removed from the socket. For example, as shown in FIG. 8, this drop-off prevention is achieved by a convex portion 51 formed on the tube surface of the lamp 50. That is, the convex portion 51 formed on the lamp surface (glass surface) is hooked on a concave portion provided on the socket (not shown) side, and the latch mechanism by the concave and convex portions prevents the lamp 50 from falling off. Yes. However, it is very difficult to form irregularities on heat-resistant and hard glass such as quartz glass. Therefore, it is difficult to simply use a halogen lamp as an automobile lighting device.

  Therefore, the problem to be solved by the present invention is to solve the above problems.

  In other words, the halogen lamp can be used for the purpose of reducing the size, weight, and illuminance of the lamp. Furthermore, it is difficult to be damaged by heat when a halogen lamp is used, and has high durability. And it is to provide at low cost.

The problem is a lighting device,
The lighting device includes:
A light source body;
An adapter used when the light source body is disposed in the socket;
The light source body is a halogen lamp body;
The adapter is
Made of resin,
In the state where the halogen lamp body is attached to the adapter, the illumination device is configured to have a gap between the adapter tip and the sealing portion tip of the halogen lamp body. The

In particular, a lighting device,
The lighting device includes:
A light source body;
An adapter used when the light source body is disposed in the socket;
The light source body is
A halogen lamp body having a dimension between the filament and the tip of the sealing portion of 1.5 to 5.0 mm,
The adapter is
Made of resin,
When the halogen lamp body is attached to the adapter, a gap of 3.7 mm or more exists between the adapter tip and the sealing portion tip of the halogen lamp body. Solved by lighting device.

Furthermore, a lighting device,
The lighting device includes:
A light source body;
An adapter used when the light source body is disposed in the socket;
The light source body is
A halogen lamp body having a dimension between 2 mm and 4 mm between the filament and the sealing portion tip;
The adapter is
Made of resin,
In the state where the halogen lamp body is attached to the adapter, a gap having a dimension exceeding 4 mm exists between the adapter tip and the sealing portion tip of the halogen lamp body. Solved by lighting device.

  In addition, the above-mentioned illumination device is solved by the illumination device characterized in that the halogen lamp main body held by the adapter is configured to be 4 to 12 mm (preferably 5 to 10 mm).

  Moreover, it is said illumination apparatus, Comprising: A concave recessed part is comprised in the front end side of an adapter, and is solved by the illumination apparatus characterized by the above-mentioned.

  Further, in the above illumination device, the adapter has a lead wire insertion hole connected to the filament of the halogen lamp body, the lead wire from the halogen lamp body is inserted into the lead wire insertion hole, and This is solved by an illumination device characterized in that a part of the lead wire is bent so that the halogen lamp main body cannot be removed from the adapter.

  Moreover, it is said illuminating device, Comprising: An illuminating device is solved by the illuminating device characterized by being an illuminating device for back operation | movement of a motor vehicle.

  In the present invention, a halogen lamp having a small size, for example, a dimension between the filament and the tip of the sealing portion of the halogen lamp body of 1.5 to 5.0 mm (2 to 4 mm among them), and further sealing. Despite the use of a small halogen lamp such as 6 to 14 mm (especially 8 to 12 mm) in length, the use of a halogen lamp has the advantage that the illumination intensity is very high. Is done.

  And since an adapter is used, it is not necessary to form the unevenness | corrugation for drop-out prevention from a socket on the glass of a halogen lamp main body, and it can provide at low cost even if glass processing with bad workability is eliminated.

  And although the adapter is made of a resin that is inferior in heat resistance compared to glass, in the state where the halogen lamp main body is attached to the adapter, there is a gap between the adapter tip and the sealing portion tip of the halogen lamp main body. In other words, since the adapter tip is configured not to contact the tip of the sealing portion of the halogen lamp body, the gap preferably has a dimension of 3.7 mm or more, more preferably more than 4 mm. Therefore, the heat from the halogen lamp does not easily go inside the adapter or the socket, that is, the heat dissipation is high, for example, the socket is not easily damaged by heat, and the durability is improved.

  In addition, if the tip end of the adapter is configured to be concave in plan view, a large distance between the adapter and the filament can be secured on the center side that is easily affected by heat, and both ends of the halogen lamp body can be secured. The part side is firmly held (supported) by the adapter, and it is difficult for glare to occur. The concave shape may be, for example, a U shape, a V shape, or a W shape, but is generally a U shape or a V shape. And by making it comprise as mentioned above, the heat from a halogen-lamp main body does not go up to a socket side easily, and a socket becomes difficult to receive a heat damage.

  By the way, basically, no irregularities are formed on the glass surface of the halogen lamp body. That is, since complicated glass processing becomes a factor of cost increase, especially in the small halogen lamp as described above, since complicated glass processing becomes a large factor of cost increase, When the halogen lamp body is inserted and disposed in the adapter, the outer surface of the halogen lamp body and the adapter are not formed on the outer surface. It is assumed that there is no concavity and convexity between the inner surface and the inner surface. However, this may cause the halogen lamp body to fall off. Therefore, the adapter has a lead wire insertion hole connected to the filament of the halogen lamp body, the lead wire from the halogen lamp body is inserted into the lead wire insertion hole, and a part of the lead wire is bent. It is preferable that the halogen lamp body is configured not to be removed from the adapter. Moreover, such a configuration is simple and does not cause a significant increase in cost.

  Further, it is preferable that a latching means is configured to make it difficult for the adapter to fall off the socket when the adapter is disposed in the socket. That is, it is preferable to provide a dropping prevention means. In particular, in the case of being employed in a device such as an automobile where vibrations act, it is preferable to provide a drop-off preventing means. As such a drop-off preventing means, a latching means by unevenness can be considered.

The illumination device according to the present invention (particularly, the illumination device for illuminating the rear part of the vehicle during back operation) includes a light source body and an adapter used when the light source body is disposed in a socket. The light source body is a halogen lamp body having a dimension between the filament and the sealing portion tip of 1.5 to 5.0 mm (preferably 2 mm or more, 4 mm or less). The adapter is made of resin, and is configured such that a gap is formed between the tip of the adapter and the tip of the sealing portion of the halogen lamp body when the halogen lamp body is attached to the adapter. In particular, there is a gap having a dimension of 3.7 mm or more, and more than 4 mm. The holding length of the halogen lamp body by the adapter is 4 to 12 mm (preferably 5 to 10 mm). Further, the adapter has a concave recess on the tip side. The adapter has a lead wire insertion hole connected to the filament of the halogen lamp body, the lead wire from the halogen lamp body is inserted into the lead wire insertion hole, and a part of the lead wire is formed. It is bent so that the halogen lamp body cannot be removed from the adapter.
Further details will be described below.

  1 to 6 are diagrams for explaining an embodiment of the present invention. FIG. 1 is a perspective view of a halogen lamp body, FIG. 2 is a side view of the halogen lamp body, and FIG. 3 is a perspective view of an adapter. 4 is a cross-sectional view of the adapter, FIG. 5 is a side view of the adapter, and FIG. 6 is a perspective view of the adapter with the halogen lamp body attached to the adapter.

  In each figure, 1 is a halogen lamp body. The halogen lamp main body 1 has a tungsten tube (not shown) provided in a glass tube 2 made of quartz glass and having a predetermined shape, and a halogen gas sealed therein. The glass tube 2 includes a substantially cylindrical portion 2a in which a tungsten filament is provided in the space, and a flat sealing portion 2b in which the glass tube portion is crushed. Incidentally, the sealing portion 2b of the glass tube 2 in the conventional halogen lamp main body 1 has been conventionally formed with a convex portion for preventing it from falling off from the socket, but in the present embodiment. In this case, there is no protrusion for preventing the socket from falling off. That is, as can be seen from FIGS. 1 and 2, the surface of the sealing portion 2b is almost flat. 3a and 3b are lead wires connected to the tungsten filament. In addition, the dimension x between the filament (filament center) in the halogen lamp main body 1 and the front-end | tip part 2c of the sealing part 2b is 1.5-5.0 mm, especially 2-4 mm, for example, 3.5 mm. The length y of the sealing part 2b is 6 to 14 mm, particularly 8 to 12 mm, for example 8.7 mm. The total length is 20 mm.

  Reference numeral 11 denotes an adapter molded using an insulating and heat-resistant resin such as a phenol resin. The adapter 11 is formed with a hole-like insertion portion 12 into which the sealing portion 2b of the glass tube 2 of the halogen lamp body 1 can be inserted and disposed (fitted). That is, the adapter 11 has the insertion portion 12 having the same inner shape as the substantially outer shape of the sealing portion 2b. In addition, the length (holding length of the halogen lamp body by the adapter) z of the insertion portion 12 is 2 to 8 mm, particularly 3 to 5 mm, for example, 3.5 mm. Further, when the sealing portion 2b of the halogen lamp body 1 is inserted (inserted) into the insertion portion 12 of the adapter 11, the lead wires 3a and 3b are inserted and taken out from the rear end face of the adapter. Holes 13a and 13b are formed. The outer shape of the adapter 11 is configured in the same shape as the substantially inner shape of an insertion portion (insertion portion) provided in a socket described later. That is, recesses 14a and 14b that are hooked on the socket protrusions to prevent the adapter 11 from falling off are formed. 4 and 6, when the sealing portion 2b of the halogen lamp body 1 is inserted into (inserted into) the insertion portion 12 of the adapter 11, the lead wires 3a and 3b are led out from the holes 13a and 13b. Therefore, the lead wires 3a and 3b are bent 180 ° at the place where they come out. That is, the lead wire 3a is bent (turned back) 180 ° along the front surface side of the adapter 11, and the lead wire 3b is bent (turned back) 180 ° along the back surface side of the adapter 11 so that the halogen lamp main body 1 becomes the adapter. 11 will not fall off. Note that the front and back of the adapter 11 are formed to be symmetrical. That is, the same figure is recognized even if the adapter shown in FIG. 3 is rotated 180 °. Although not shown, if a reflection film such as aluminum is provided on the end face of the adapter 11 on the insertion side of the halogen lamp body 1 and further on the surface in the vicinity thereof, light from the halogen lamp is reflected. Therefore, thermal damage is reduced.

  And the adapter 11 side in the illuminating device in which the halogen lamp body 1 is disposed in the insertion portion 12 of the adapter 11 is inserted into a resin socket. Since this socket is the same as a conventionally used socket, details are omitted. That is, an insertion portion into which the adapter 11 is inserted is configured in this socket. Moreover, the convex part which the recessed part 14a, 14b of the adapter 11 latches is provided, and the adapter 11 cannot fall easily with the uneven | corrugated fitting structure. In addition, connection terminals that are electrically connected are provided corresponding to the lead wires 3 a and 3 b that are folded back on the surface of the adapter 11.

  The illuminating device for illuminating the rear part during the back operation of the automobile configured as described above uses a halogen lamp, so that its illuminance is very high despite being small and light. Therefore, even when the vehicle is driven at night, the back operation is improved because the back is illuminated brightly.

  Since the halogen lamp body 1 is not directly connected to the socket, but the halogen lamp body 1 attached to the adapter 11 is attached to the socket, the structure of the halogen lamp body 1 becomes simple. That ’s why it ’s cheaper.

  The above feature is achieved by using the adapter 11, but if the adapter 11 is made of glass, the feature is not achieved. That is, since the adapter 11 is made of resin, it can be easily molded, and the above features are sufficiently exhibited.

  However, the resin is inferior in heat resistance compared to glass (inorganic glass). Moreover, the light source used in the present invention is a halogen lamp. Therefore, compared with a normal incandescent bulb, the heat radiation per unit volume is very large. Therefore, the adapter 11 and the socket made of resin are easily damaged by heat. Although the adapter 11 is still fixed to the automobile body, the repair / replacement is troublesome if it is damaged.

  Therefore, in the above embodiment, in a state where the halogen lamp body 1 is attached to the adapter 11, there is a gap between the distal end portion 11a of the adapter 11 and the distal end portion 2c of the sealing portion 2b of the halogen lamp main body 1. Since there is a gap of 3.7 mm or more, there is a sufficient gap between the halogen lamp body 1 and the socket in the socket mounting state, heat dissipation is improved, and heat from the halogen lamp is inside the socket. It becomes difficult to bend, and the socket is not easily damaged by heat, and durability is improved.

  And if an adapter is comprised as mentioned above, a halogen lamp can be used also with respect to the existing motor vehicle equipped with the conventional type illuminating device (socket).

  In the above embodiment, the adapter 11 is provided with the insertion holes 13a and 13b of the lead wires 3a and 3b connected to the filament of the halogen lamp main body 1, and the lead wires 3a and 3b from the halogen lamp main body 1 lead. It is assumed that the lead wires 3a and 3b are partially bent through the wire insertion holes 13a and 13b. As a result, the halogen lamp body 1 does not fall off from the adapter 11. This is achieved by devising the lead wire from the filament, and does not require any special parts, so that the cost is reduced accordingly.

  FIG. 7 is a partial plan view of an adapter for explaining another embodiment of the present invention. In the present embodiment, only the tip 11a side of the adapter 11 is configured to have a substantially U-shaped recess, and the other points are the same as in the previous embodiment. In the present embodiment, the distal end portion 11a side of the adapter 11 is formed in a substantially U shape, so that the total length of both ends of the adapter is the same as the total length of the adapter of the embodiment in which the distal end portion of the adapter 11 is flat. Then, the gap is longer on the center side of the adapter, and the heat dissipation is superior to that of the above embodiment. Further, if the total length of the center portion of the adapter is the same as the total length of the adapter of the above embodiment, the length is long at both ends of the adapter, and the ability to support the halogen lamp body 1 is high. , Rattling is unlikely to occur.

A perspective view of a halogen lamp body according to the present invention. Side view of the halogen lamp body according to the present invention The perspective view of the adapter which becomes this invention Sectional view of the adapter according to the present invention Side view of the adapter according to the present invention Perspective view with the halogen lamp body attached to the adapter The partial top view of the adapter of other embodiment which becomes this invention Perspective view of a conventional lighting device (halogen lamp)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Halogen lamp main body 2 Glass tube 2b Sealing part 2c Sealing part front-end | tip part 3a, 3b Lead wire 11 Adapter 11a Adapter front-end | tip part 12 Sealing part insertion part 13a, 13b Lead wire insertion hole 14a, 14b Adapter drop prevention convex 15a, 15b Positioning convex portions 16a, 16b Standing walls 17a, 17b Opening window 21 Socket 22 Adapter insertion portion

Representative Katsumi Udaka

Claims (6)

A lighting device,
The lighting device includes:
A light source body;
An adapter used when the light source body is disposed in the socket;
The light source body is a halogen lamp body;
The adapter is
Made of resin,
An illuminating device comprising a gap between the tip of the adapter and the tip of the sealing portion of the halogen lamp body when the halogen lamp body is attached to the adapter. A lighting device,
The lighting device includes:
A light source body;
An adapter used when the light source body is disposed in the socket;
The light source body is
A halogen lamp body having a dimension between the filament and the tip of the sealing portion of 1.5 to 5.0 mm,
The adapter is
Made of resin,
When the halogen lamp body is attached to the adapter, a gap of 3.7 mm or more exists between the adapter tip and the sealing portion tip of the halogen lamp body. Lighting device.   The illumination device according to claim 1 or 2, wherein the holding length of the halogen lamp body by the adapter is 4 to 12 mm.   The illumination device according to any one of claims 1 to 3, wherein the adapter has a concave recess formed on a tip side thereof. The adapter has a lead wire insertion hole connected to the filament of the halogen lamp body, the lead wire from the halogen lamp body is inserted into the lead wire insertion hole, and a part of the lead wire is bent. The illuminating device according to any one of claims 1 to 4, wherein the halogen lamp main body is configured not to be removed from the adapter. 6. The lighting device according to claim 1, wherein the lighting device is a lighting device for a back operation of an automobile.

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