JPH0733289Y2 - Vehicle lamp with heat shield structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vehicular lamp having a heat shield structure for protecting a lamp body from heat generated by a light bulb, and in particular, an inner lens with this heat shield structure. The present invention relates to a vehicle lamp.

[Conventional technology]

2. Description of the Related Art In recent automobiles, the lamps have been made thinner and flatter due to design requirements, and the height of a lamp body forming the lamp tends to be reduced. On the other hand, since the lamp itself needs to secure a required illuminance, the light bulb to be used has the same luminous intensity as before.

Therefore, as the lamp body becomes flatter, the distance between the light bulb and the lamp body becomes smaller, and the heat generated by the light bulb significantly affects the lamp body. It is easily deformed or melted.

Therefore, in order to prevent thermal deformation and melting damage of the lamp body, a heat shield structure provided with a heat resistant protector is required.

20 and 21 show an example of a lamp having such a heat shield structure, and here, an example of a flattened turn signal lamp is shown. FIG. 20 is a partially cutaway front view of the lamp,
FIG. 21 is a transverse sectional view taken along the line CC. In these figures, 1 is a lamp body formed by resin molding, and its front opening 1a is formed in a flat shape. Further, the electric bulb 3 is arranged in the lamp body 1 by using the socket 2 fitted and supported in the rear opening 1b.
An outer lens 4 is attached to the front opening 1a to define a lamp chamber with the lamp body 1. A heat-resistant protector 5 made of a metal plate or the like is provided between the light bulb 3 and the upper and lower inner surface portions of the lamp body 1 facing the light bulb 3, and the heat of the light bulb 3 is shielded by the heat-resistant protector 5. This prevents thermal deformation and melting damage of the lamp body 1 due to An inner lens 6 is provided on the front side of the light bulb 3 and is supported by the lamp body 1.

The conventional heat-resistant protector 5 and inner lens 6 described above
The process structure is shown in the partially exploded perspective view of FIG. 22 and the sectional view of the assembled state in FIG. 23, respectively. The heat-resistant protector 5 is formed by bending a metal plate so that its vertical cross-section has a U shape.
After inserting the large diameter hole 5a provided in the center piece into the light bulb 3,
The small-diameter holes 5b provided at a plurality of positions are used to fix the lamp body 1 to the inner surface of the rear portion of the lamp body 1 with screws 7. In this fixed state, the upper and lower pieces 5A and 5B of the heat-resistant protector 5 are arranged between the upper inner surface and the lower inner surface of the lamp body 1 and the light bulb 3, respectively.
The heat of the light bulb 3 is prevented from affecting the upper and lower inner surfaces.

In addition, mating recesses 5c are formed on both sides of the heat-resistant protector 5 in a concave shape. Then, an inner lens 6 having a U-shaped cross section is made of transparent resin or the like is disposed on the front side of the heat-resistant protector 5, and engaging projections 6a integrally formed on both inner surfaces of the inner lens 6 are provided with the fitting recesses. The inner lens 6 is fixed to the lamp body 1 via the heat-resistant protector 5 by fitting the inner lens 6 into the lamp body 1.

[Problems to be solved by the device]

In the structure of the conventional heat-resistant protector 5 and the inner lens 6 as described above, at the time of assembling the heat-resistant protector 5, it is necessary to first fix the heat-resistant protector 5 to the recessed portion of the lamp body 1 with the screw 7. However, since the lamp body 1 has the front opening 1a formed as flat as possible,
The work of fastening the screw 7 while supporting the heat-resistant protector 5 inside the lamp body 1 is extremely difficult, and there is a problem that workability is poor.

Further, since a plurality of screws 7 are required, the number of parts is large and a tool for fastening the screws 7 is required, and the screws 7 may deteriorate the appearance of the lamp.

Further, since the heat-resistant protector 5 is attached to the lamp body 1 and then the inner lens 6 is attached to the lamp body 1, there is a problem that it is very difficult to fit it in a predetermined position in a narrow lamp chamber.

An object of the present invention is to solve these problems, to provide a vehicular lamp that does not require screws and has a heat shield structure that is easy to assemble.

[Means for Solving the Problems]

The vehicular lamp of the present invention has a structure in which a heat-resistant protector arranged in the lamp body and an inner lens are integrally coupled, and the structure is fitted and fixed in the lamp body.

In this case, the structure is fixed in the lamp body by fitting and fixing the heat-resistant protector in the lamp body. Alternatively, the structure is fixed to the lamp body by fitting and fixing the inner lens to the lamp body.

[Action]

According to the present invention, a structure in which the heat-resistant protector and the inner lens are integrally combined is formed, and by fitting this structure in the lamp body, the heat-resistant protector and the inner lens can be fixed, without using screws. It is possible to easily assemble them.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

(First Embodiment) FIGS. 1 to 4 are views showing a first embodiment of the present invention, which is an example applied to the turn signal lamp shown in FIG. 20 and FIG. FIG. 1 is a partially exploded perspective view of a main part, FIG. 2 is a perspective view of an assembled structure, FIG. 3 is a partially cutaway front view, and FIG. 4 is a sectional view taken along the line AA.

In these figures, 1 is a flat lamp body, 3 is a light bulb arranged in the lamp body 1 by a socket 2, 4 is an outer lens, 15 is a heat protector made of a metal plate, and 16 is an inner lens. is there.

Holding rails 8 for holding the heat-resistant protector 15 are integrally formed on the upper and lower inner surfaces of the lamp body 1. The holding rail 8 has a pair of L-shaped rails that are arranged to face each other at a required interval and extend in the front-rear direction of the lamp body 1.

As shown in FIG. 1, the heat-resistant protectors 15 are respectively provided on the upper and lower sides, and each heat-resistant protector 15 is formed by bending one metal plate, and both side portions 15a thereof are fitted to the holding rail 8. Are being supported. Further, the central portion 15b of the heat-resistant protector 15 is formed in a stepped shape so as to be positioned one step inward of the side portions 15a, and notch pieces 15c are projected to both sides at both side edges thereof.

On the other hand, the inner lens 16 is formed by using a transparent resin or the like so as to have a laterally extending U-shaped cross section with both ends slightly widened, and a Fresnel step 16a is formed on the front surface thereof as is well known. Further, the flange 16b is integrally formed along the upper edge and the lower edge of both side surfaces thereof.

Then, the cutout piece 15c and both side portions 15a of the heat-resistant protector 15 are provided.
By inserting the heat-resistant protector 15 from the rear of the inner lens 16 so that the flange 16b of the inner lens 16 is fitted between the two, as shown in FIG. 2, the two heat-resistant protectors 15 and the inner lens 16 are integrated. It is possible to construct a structure that is bonded to. Further, the structure thus combined is inserted into the lamp body 1 through the opening 1a, and the edge portions of both side portions 15a of the heat-resistant protector 15 are fitted into the holding rails 8 to obtain the structure shown in FIGS. As described above, the heat-resistant protector 15 can be fixed in the lamp body 1. As a result, the inner lens 16 is held inside the lamp body 1 via the heat-resistant protector 15.

In this assembled state, the upper and lower inner surfaces of the lamp body 1 just above and below the light bulb 3 are shielded by the heat-resistant protector 15, so that the lamp body 1 is heated by the heat of the light bulb 3.
Thermal deformation and melting damage of the inner surface of the are prevented.

Furthermore, during this assembly, the inner lenses 16 and 2
After pre-fitting and integrating the heat-resistant protector 15 pieces,
Since the heat-resistant protector 15 only needs to be inserted and fitted into the holding rail 8 in the lamp body 1, no screw is required. This makes it possible to solve all the problems that have been caused by using the conventional screw.

(Second Embodiment) FIGS. 5 to 7 show a second embodiment of the present invention.
FIG. 5 is a partially exploded perspective view, FIG. 6 is a perspective view of the structure, and FIG.
The figure is an enlarged cross-sectional view of a main part in an assembled state.

In this embodiment, as shown in FIG. 5, the heat-resistant protector 25 is formed by bending a single metal plate into a U-shaped cross section, and the large-diameter hole 25a provided in the center piece thereof allows the light bulb 3 to be inserted therethrough. To configure. Further, small rectangular engaging holes 25b are formed at positions near the tips of the upper and lower pieces of the heat-resistant protector 25.

On the other hand, the inner lens 26 is formed in a U-shaped cross section in the lateral direction, and engaging protrusions 26a protruding upward and downward are integrally formed at the upper and lower ends of the center surface of the inner lens 26, respectively. Then, the heat-resistant protector 25 is fitted from the rear of the inner lens 26, and the engaging hole 25b is fitted into the engaging projection 26a as shown in FIG.
The heat-resistant protector 25 and the inner lens
It is possible to form a structure in which 26 and 26 are integrally connected.

Further, recessed portions 1d into which the engaging protrusions 26a can be fitted are formed at required locations on the upper and lower inner surfaces of the lamp body 1, and a structure in which the heat-resistant protector 25 and the inner lens 26 are integrated is formed on the front surface of the lamp body 1. By inserting this structure while inserting it from the opening 1a and inserting the large-diameter hole 25a of the heat-resistant protector 25 into the light bulb 3, as shown in FIG. 7, the engaging projection 26a fits into the recess 1d, and the inner lens 26 It is fixed in the lamp body 1. This makes the heat-resistant protector
25 is the lamp body 1 indirectly through the inner lens 26
Fixed to.

Even in this configuration, the heat-resistant protector 25 and the inner lens 26 can be held without using screws.
The same effect as the embodiment can be obtained. Further, in this embodiment, since it is not necessary to form the holding rail on the inner surface of the lamp body 1, the lamp body 1 can be easily manufactured.

(Third Embodiment) FIGS. 8 to 10 are modified examples of the second embodiment. FIG. 8 is a partially exploded perspective view, FIG. 9 is a perspective view of the structure, and FIG. It is an expanded sectional view of the principal part of a state.

In this embodiment, as shown in FIG. 8, the heat-resistant protector 35 is constructed as a flat plate material having a shape corresponding to the planar shape of the inner lens 36, while the inner lens 36 is flanged along the upper and lower inner edges of both side surfaces thereof. 36b is integrally formed, and a groove 36c is formed along the inner surface and the central surface of the flange 36b. In addition, engaging projections 36a are formed on the upper and lower ends of the center surface of the inner lens 36, respectively.

Then, the heat-resistant protector 35 is inserted from the rear between both side surfaces of the inner lens 36 and the peripheral edge thereof is fitted into the groove 36c, so that the heat-resistant protector 35 and the inner lens 36 are integrally formed as shown in FIG. It is combined. The structure constructed in this manner is inserted into the lamp body 1 through the front opening 1a of the lamp body 1 as in the second embodiment.
As shown in the figure, the heat-resistant protector 35 and the inner lens 36 can be supported in the lamp body 1 by fitting the engaging protrusions 36a into the engaging recesses 1d formed in the upper and lower inner surfaces of the lamp body 1, respectively.

Also in this embodiment, the same effect as in the second embodiment can be obtained. Further, in this embodiment, the heat-resistant protector 35
Since it can be formed in a flat plate shape, the heat-resistant protector 35 can be easily manufactured.

(Fourth Embodiment) FIGS. 11 to 13 show a fourth embodiment of the present invention.
It shows a modification of the third embodiment. FIG. 11 is a partially exploded perspective view, FIG. 12 is a perspective view of the structure, and FIG. 13 is an enlarged sectional view of a main part.

In this embodiment, as shown in FIG. 11, a cut-and-raised piece 45a is formed by cutting and raising a part of both side edges of a heat-resistant protector 45 formed in a flat plate shape in an inverted L shape. And the inner lens 4
No groove is formed on the inner edge of the flange 46b of 6
As shown in the figure, the flange 46b of the inner lens 46 is sandwiched between the both side edges of the heat-resistant protector 45 and the cut-and-raised pieces 45a to integrally combine the two to form a structure.

The structure constructed in this manner is inserted into the lamp body 1 through the front opening 1a of the lamp body 1 as in the second and third embodiments, and the upper and lower parts of the lamp body 1 are inserted as shown in FIG. The engaging projections are respectively formed in the engaging recesses 1d formed on the inner surface.
The heat-resistant protector 45 and the inner lens 46 can be supported in the lamp body 1 by inserting the 46a.

In this embodiment, the heat-resistant protector 45 needs to be processed, but it is not necessary to form a groove in the flange 46b of the inner lens 46, which facilitates the molding of the inner lens 46.

(Fifth Embodiment) FIGS. 14 to 16 show a fifth embodiment of the present invention.
It shows a modification of the fourth embodiment. FIG. 14 is a partially exploded perspective view, FIG. 15 is a perspective view of a structure, and FIG. 16 is an enlarged cross-sectional view of a main part in an assembled state.

In this embodiment, as shown in FIG. 14, engaging projections 55a are formed by partially protruding both side edges of the heat-resistant protector 55 formed in a flat plate shape in both directions. Further, an engagement hole 56c into which the engagement projection 55a can be inserted is formed in a part of an inner edge of the flange 56b of the inner lens 56. In addition, heat-resistant protector 55
And the inner edge shape of the flange 56b are matched.

Then, the heat-resistant protector 55 is positioned in the flange 56b, and then the engaging projection 55a is bent at a right angle so that the engaging hole 5
The heat-resistant protector 55 is integrated with the inner lens 56 as shown in FIG. 15 and FIG. 16 by constructing a structure in which the heat-resistant protector 55 is integrated with the inner lens 56 as shown in FIGS.

The structure constructed in this way is not shown in the figure,
Similar to the second to fourth embodiments, it is inserted into the lamp body 1 through the front opening 1a of the lamp body 1 and the engaging projections are respectively formed in the engaging recesses 1d formed on the upper and lower inner surfaces of the lamp body 1.
The heat-resistant protector 55 and the inner lens 56 can be supported in the lamp body 1 by inserting the 56a.

Also in this embodiment, the same effect as in the fourth embodiment can be obtained. Further, in this embodiment, the engaging protrusion 55a
The heat-resistant protector 55 and the inner lens 56 can be firmly coupled by inserting the hole into the engaging hole 56c and then caulking the hole.

(Sixth Embodiment) FIGS. 17 to 19 show a sixth embodiment of the present invention.
FIG. 17 is a partially exploded perspective view, FIG. 18 is a perspective view of the structure, and FIG.
The figure is an enlarged cross-sectional view of a main part in an assembled state.

In this embodiment, as shown in FIG.
Two rectangular engaging holes 65a are formed at one end of each heat-resistant protector 65. Further, two engaging projections 66a are formed side by side on the upper surface of the central surface portion of the inner lens 66.
In addition, the planar shape of the heat-resistant protector 65 and the out-of-plane shape of the inner lens are substantially matched. Also, the inner lens
No engaging projection is formed on the lower surface of 66.

Then, the heat-resistant protector 65 is placed on the inner lens 66, and the engaging hole 65a is fitted into the engaging protrusion 66a, whereby the 18th
As shown in the figure, the heat-resistant protector 65 is integrated with the inner lens 66 to form a structure.

As shown in FIG. 19, the structure constructed in this way is inserted into the lamp body 1 through the front opening 1a of the lamp body 1 and engages with the engaging recesses 1d formed on the upper and lower inner surfaces of the lamp body 1, respectively. By inserting the fitting protrusion 66a, the heat-resistant protector 65 can be supported by being sandwiched between the inner lens 66 and the lamp body 1.

Although this embodiment shows an example in which the heat-resistant protector 65 is integrated only on the upper surface of the inner lens 66, if the engaging hole 65a and the engaging projection 66a are not easily separated from each other, the lower surface of the inner lens 66 Also, the heat-resistant protector 65 can be integrated.

Although various embodiments have been described above, the structure for connecting the heat-resistant protector and the inner lens and the structure for fixing the combined structure in the lamp body in the present invention are not limited to those described above. Needless to say, various configurations can be adopted.

[Effect of device]

As described above, according to the present invention, the heat-resistant protector disposed in the lamp body and the inner lens are integrally combined to form a structure, and this structure is fitted and fixed in the lamp body. The heat-resistant protector and the inner lens can be fixed without using them, and the number of parts can be reduced and the assembling can be facilitated.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of the essential parts of the first embodiment of the present invention,
FIG. 2 is a perspective view of the assembly in an assembled state, FIG. 3 is a partially cutaway front view of the assembled state, FIG. 4 is a sectional view taken along the line AA of FIG. 3, and FIG. 2 is a partially exploded perspective view of an essential part of the second embodiment, FIG. 6 is a perspective view of a structure, FIG. 7 is an enlarged cross-sectional view of the essential part in its assembled state, and FIG. A perspective view, FIG. 9 is a perspective view of the structure, FIG. 10 is an enlarged cross-sectional view of a main part in its assembled state, FIG. 11 is a partially exploded perspective view of the main part of the fourth embodiment, and FIG. Fig. 13 is a perspective view, Fig. 13 is an enlarged sectional view of an essential part in its assembled state, Fig. 14 is a partially exploded perspective view of the fifth embodiment, Fig. 15 is a perspective view of the structure, and Fig. 16 is B in its assembled state. -Cross-sectional view taken along line B, FIG.
A partially exploded perspective view of the embodiment, FIG. 18 is a perspective view of its structure,
FIG. 19 is an enlarged cross-sectional view of a main part of the assembled state, FIG. 20 is a partially cutaway front view of a lamp to which the present invention is applied, FIG. 21 is a cross-sectional view taken along the line CC, and FIG. FIG. 23 is a partially exploded perspective view showing an assembled structure of a heat-resistant protector and an inner lens in a conventional lamp, and FIG. 23 is a sectional view of the assembled state. 1 ... Lamp body, 2 ... Socket, 3 ... Light bulb, 4
...... Outer lens, 5,15,25,35,45,55,65 …… Heat-resistant protector, 6,16,26,36,46,56,66 …… Inner lens,
7 ... screw, 8 ... holding rail.

Claims (3)

[Scope of utility model registration request] 1. A vehicular lamp having a heat-resistant protector and an inner lens arranged in a lamp body, wherein a structure in which a heat-resistant protector is integrally connected to the inner lens is formed, and the structure is provided in the lamp body. A vehicle lamp having a heat-shielding structure, which is fitted and fixed. 2. A vehicular lamp having a heat shield structure according to claim 1, wherein a heat-resistant protector constituting a structure is fitted and fixed to a lamp body. 3. A vehicular lamp having a heat shield structure according to claim 1, wherein an inner lens constituting a structure is fitted and fixed to a lamp body.