JPH0511208U - Vehicle lighting - Google Patents

Abstract

(57) [Abstract] [Purpose] To inspect from outside without destroying the lamp whether or not the amount of the sealant that fills the groove provided in the lamp body and fixes the seal leg of the lens is appropriate. Obtain the enabled vehicular lamp. [Structure] In a structure in which a sealing leg portion 8 formed on a peripheral edge of a lens 5 is inserted into a groove portion 4 provided along an opening edge of a lamp body 1 and adhered with a sealing agent 9, a predetermined height of the sealing leg portion is set. The step portion 10 having the end face located at a predetermined position is provided, the sealing material contains a fluorescent material, and the transmission of light from the fluorescent material in the state where the sealing agent is in contact with the end surface of the step portion By observing the state, it is inspected whether or not the sealant is injected in an appropriate amount.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicular lamp in which a lens is attached to a front opening of a lamp body to form a lamp housing, and particularly for a vehicle in which a seal leg portion of a lens is inserted into a groove provided in a lamp body and adhered with a sealant. Regarding lighting fixtures.

[0002]

[Prior Art]

 A general vehicle lamp has a structure in which a light bulb, a reflector, an inner lens, etc. are arranged and supported inside the lamp body, and an outer lens is attached to the front opening of the lamp body to keep the inside close to a sealed state. Has been. As a structure for mounting the outer lens on the lamp body, conventionally, as shown in FIG. 6, a groove portion 24 is formed along the opening edge of the lamp body 21 which supports a light bulb 23 by a socket 22. A seal leg portion 28 is provided on the periphery of 25 so as to face the groove portion 24, the seal leg portion 28 is inserted into the groove portion 24, and the seal leg portion 28 is inserted into the groove portion 24 by the sealing agent 29 injected into the groove portion 24. Adhesive fixing to the structure. At the time of this adhesive fixing, usually, a method of injecting the sealing agent 29 into the groove portion 24 first and then inserting the seal leg portion 28 of the outer lens 25 is used. Further, the seal leg portion 28 is formed at a position slightly inward from the peripheral edge portion 25a of the outer lens so that the groove portion 24 is not exposed to the outside when the outer lens 25 is attached, and the peripheral edge portion 25a hides the groove portion 24. Is configured.

[0003]

[Problems to be solved by the device]

 In such a structure, when the amount of the sealant 29 injected into the groove 24 is small, the contact area between the seal leg 28 and the sealant 29 becomes small as shown in FIG. 7, and the desired seal effect is obtained. If not, water may enter inside the lamp. Also, the required adhesive strength cannot be obtained, and the outer lens may fall off due to vehicle vibration or the like. On the other hand, if there is too much sealant, the sealant will overflow from the groove when the seal leg is inserted, and it will stick out around the lamp and stain the lamp, resulting in a deterioration in appearance.

Therefore, it is necessary to manage the sealing agent in an appropriate amount. However, since the appropriate sealing agent is determined by the inner volume of the groove, the thickness and insertion length of the seal leg, etc. It is difficult to make a judgment when the sealant is injected into the groove, and it is necessary to make a judgment after confirming the contact state with the sealant when the seal leg is actually inserted into the groove. However, in the above-described conventional lamp, since the groove portion 24 is hidden by the peripheral edge portion 25a of the outer lens 25, when the seal leg portion 28 is thus inserted into the groove portion, the seal leg portion It is difficult to properly confirm the state inside the groove. Therefore, conventionally, it is necessary to extract a product and disassemble the product to inspect the adhesive state of the seal leg portion, which requires a lot of labor for the inspection and lowers the manufacturing yield. An object of the present invention is to provide a vehicular lamp capable of properly inspecting the amount of sealing agent without destroying the lamp.

[0005]

[Means for Solving the Problems]

 The vehicular lamp of the present invention has a stepped portion formed at a predetermined height position on a sealing leg portion of a lens which is inserted into a groove portion of a lamp body and adhered with a sealing agent, and contains a fluorescent material in the sealing agent. I am letting you.

[0006]

[Action]

 According to the present invention, it is possible to externally inspect the proper adhesion state of the seal leg portion in the groove due to the difference in the appearance of the step portion when the step portion is in contact with the sealant and when it is not in contact with the sealant. Is possible.

[0007]

【Example】

 Next, the present invention will be described with reference to the drawings. FIG. 1 is a partially exploded perspective view of an embodiment in which the present invention is applied to a rear lamp of an automobile. In FIG. 1, reference numeral 1 denotes a lamp body, which is made of resin or the like and formed into a horizontally long box shape, and a plurality of light bulbs 3 are supported by a light bulb socket 2 inside thereof. Configures the light source for tail and stop signal lamps. Further, the peripheral portion of the front opening of the lamp body 1 is integrally molded so that its cross section has a U-shape, so that the groove portion 4 is formed along the peripheral portion.

On the other hand, the outer lens 5 is made of red resin and has a diffusion step 6 formed on the inner surface thereof and a triangular pyramid-shaped reflex reflector step 7 formed on a part of the inner surface thereof. Is formed. A seal leg portion 8 to be inserted into the groove portion 4 of the lamp body 1 is integrally formed on a peripheral portion of the outer lens 5, and protrudes toward the lamp body side. The seal leg portion 8 is formed slightly inside the peripheral edge of the outer lens. Then, in order to bond and fix the outer lens 5 to the lamp body 1, the sealing agent 9 (see FIG. 3) is injected into the groove portion 4 and the seal leg portion 8 of the outer lens is inserted into the groove portion 4. Then, the sealing agent 9 is used for adhesion.

As shown in a partially enlarged view of FIG. 2, the seal leg portion 8 is formed so that one side of the seal leg portion 8, in this embodiment, the base side of the outer side surface of the seal leg portion 8 is made thick. Thus, the tip side of the seal leg is formed to be relatively thin, and the step portion 10 is formed at this boundary portion. The step portion 10 is formed such that the end surface of the step portion 10 is located at an intermediate position in the length of the seal leg portion 8 in the protruding direction. This position is formed so that the end surface has a depth necessary for the sealant 9 injected into the groove 4 to come into contact with the seal leg 8. On the other hand, the sealing agent injected into the groove portion 4 contains a fluorescent material that emits light by ultraviolet rays.

According to this structure, when the outer lens 5 is adhered, the sealing agent 9 is injected into the groove portion 4 as described above, and then the sealing leg portion 8 is inserted into the groove portion 4, and the sealing agent 9 is used. Glue the seal legs. At this time, as shown in FIG. 3A, when the amount of the sealant 9 injected into the groove 4 is small, when the seal leg 8 is inserted into the groove 4, the end face of the step 10 and the seal are sealed. A void X is generated between the agent 9 and the agent. For this reason, a black light (not shown) that emits ultraviolet rays is arranged on the outer surface side of the outer lens 5 and turned on, and the ultraviolet rays are applied to the sealing agent 9 through the outer lens 5 and the sealing leg portion 8. The fluorescent material contained in is emitted, and this light is directly transmitted to the outer surface of the outer lens 5 at the seal leg portion 8, but is not in contact with the sealant 9 at the end surface of the step portion 10. However, the light is scattered on the surface of the sealant 9 and is not effectively irradiated toward the end face of the step portion 10. Therefore, when the seal leg portion 8 is viewed from the outer side of the outer lens 5, the seal leg portion 8 looks shiny in fluorescent color, but the step portion 10 and other portions not in contact with the sealant appear dark.

On the other hand, if a sufficient amount of the sealant 9 is injected into the groove 4 as shown in FIG. 3B, the surface of the sealant 9 will not be removed when the seal leg 8 is inserted into the groove 4. It is in a state of being in contact with the end surface of the step portion 10. In this state, the light generated by the fluorescent material contained in the sealant 9 passes through each of the end faces of the seal leg 8 and the step 10 and is guided to the outer surface of the outer lens 5, so that the seal leg 8 and step 10 all appear to glow in fluorescent color.

Therefore, by this observation, it can be confirmed from the outside whether or not the sealant 9 in the groove 4 is injected up to the height position of the end face of the step 10. Therefore, if the height position of the end face of the step portion 10 is designed to correspond to the required depth position of the sealant 9 in the groove portion 4 as described above, the sealing leg portion 8 It is possible to confirm the contact depth between the sealant 9 and the sealant 9, and it is possible to easily confirm whether or not suitable adhesion has been performed.

Here, when the present invention is applied to a so-called wraparound portion where the lens outer surface is curved, as shown in FIG. 4, the step portion 10 is formed on the inner side surface of the seal leg portion 8 and the seal portion 8 is formed. The outer lens 5 may be integrally formed with the reflecting portion 11 having a reflecting surface inclined at 45 ° with respect to each of the protruding direction of the leg portion 8 and the outer surface of the outer lens 5. By providing the reflecting portion 11, the light from the fluorescent material that is transmitted through the end faces of the seal leg portion 8 and the step portion 10 is reflected by the reflecting surface of the reflecting portion 11 so that the side surface of the outer lens 5 can be observed. It will be possible. Therefore, if compared with a case where the light transmitted through the end face of the seal leg or the stepped portion is observed from the front of the outer lens 5 through the thick lens portion of the wraparound without providing the reflection portion 11, the light passes through the outer lens. It is possible to prevent deterioration of the appearance due to abnormal refraction and reflection of light, and it is possible to appropriately observe the state of the end surface of the step portion 10. Although the step is formed on the outer surface of the seal leg in the first embodiment, it goes without saying that it may be formed on the inner surface.

Further, as shown in FIG. 5, the end surface of the step portion 10 may be formed into a rough surface. In this embodiment, a rough surface is formed by forming fine irregularities 12 on the end surface of the step portion 10. By forming the end surface of the stepped portion 10 into a rough surface as described above, when the light from the sealant 9 enters through the gap, the light is diffusely reflected by the roughened surface, and the stepped portion is exposed from the outside of the outer lens. When observing 10, this part can be made to appear darker, and the difference in brightness from the seal leg 8 can be made noticeable. When the end surface of the step portion 10 is in contact with the sealant 9, the concave portion of the unevenness 12 is filled with the seal agent 9, so that the end surface is made flat and the incidence of light on the step portion 10 is promoted. The fact that this part is brightly observed is the same as in the previous embodiment. Here, as the rough surface, it is possible to dispose a large number of conical protrusions such as a reflex reflector step used as a reflecting mirror of a lamp.

[0015]

[Effect of the device]

 As described above, according to the present invention, the stepped portion is integrally provided on the seal leg portion of the lens which is inserted into the groove provided in the lamp body and adhered by the sealant, and the sealant contains the fluorescent material. Therefore, by observing the light generated by the fluorescent material through the seal leg and the step, it can be determined whether or not the sealant is in contact with the end face of the step. Therefore, by setting the position of the end face of the step to the minimum depth position of the sealant, the adhesion state of the seal leg by the sealant can be easily inspected and the lamp is not destroyed. Has the effect of improving the manufacturing yield.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of an embodiment of a vehicular lamp of the present invention.

FIG. 2 is an enlarged perspective view of a seal leg portion of a lens.

3 (a) and 3 (b) are enlarged cross-sectional views of a main part showing a reflection state of light when a shortage and a proper amount of a sealant are provided, respectively.

FIG. 4 is an enlarged view of a seal leg portion according to another embodiment of the present invention.

FIG. 5 is an enlarged perspective view of a seal leg portion according to still another embodiment of the present invention.

FIG. 6 is a vertical sectional view of an example of a conventional lamp.

FIG. 7 is a partial enlarged cross-sectional view for explaining a problem in the conventional lamp.

[Explanation of symbols]

 1 Lamp Body 4 Groove 5 Outer Lens 8 Seal Leg 9 Sealant (Including Fluorescent Material) 10 Step 11 Reflector 12 Rough Surface

Claims (1)

[Claims for utility model registration] [Claim 1] A lamp body having a light bulb supported therein,
A lamp housing is configured with a lens attached to the front opening, a groove portion is provided along the opening edge of the front opening of the lamp body, and the lens is provided with a seal leg portion formed corresponding to the opening edge, In a vehicular lamp in which the seal leg portion is inserted into the groove portion and bonded with a sealant, a step portion is formed on the seal leg portion at a predetermined height position of the seal leg portion, and Is a vehicle lamp characterized by containing a fluorescent material.