JPH0139367Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a display device for automobiles, such as a tail lamp or an ornament, which is attached to the rear surface of a vehicle body and informs following vehicles of its presence.

The main component of tail lamps, ornaments, etc. is a hollow body formed by attaching a lens to a base so as to create an internal space.In that case, the base and lens are completely sealed by hot melt or hot plate welding, or the base A drainage hole is provided in a part of the joint between the lens and the lens, and the rest is fixed by hot melt or hot plate welding.

However, in the case of a complete seal, the base and lens may become deformed due to the expansion and contraction of the internal air due to changes in the temperature of the outside air, and if a drainage hole is provided, it may cause a breathing effect. Although no deformation occurs, water and moisture enter the internal space through the drain holes, causing fogging of the lens.

The present invention was developed in consideration of the above-mentioned drawbacks, and the threads of the bolts used to attach the display device to the vehicle body are partially exposed inside the display device's interior space and inside the trunk, thereby creating a connection between the interior space and the trunk. The purpose of the present invention is to provide a display device for an automobile that can communicate with each other and prevent deformation and lens fogging as much as possible.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIGS. 1 and 2 show an embodiment of the present invention, where 1 is a base and 2 is a lens. base 1
and lens 2 are fixed by hot melt and hot plate welding, creating an internal space S therebetween. At the bottom of the base 1 are mounting legs 1A.
A protrusion 1B for a bolt insert is formed, and one end of a mounting bolt 3 is inserted into the protrusion 1B during molding and held therein. In addition, an air vent hole 1C is formed at the base of the leg 1A and the protrusion 1B, and the space between the leg 1A and the protrusion 1B is also an internal space S.
becomes.

Numeral 4 is a nut screwed onto the bolt 3, 5 is a gasket, and 10 is the rear surface of the vehicle body, inside of which a trunk room T is formed.

The thread of the bolt 3 is attached to the vehicle body 10 in the installed state.
It is designed to be exposed to the inside and outside of the vehicle, that is, to the trunk room T and the interior space S of the display device.

With this structure, the display device can be attached to the vehicle body 10.
When it is placed in a predetermined position on the rear surface via the gasket 5, and the nut 4 is screwed onto the bolt 3 from inside the trunk T and tightened to make the fixed state, as shown in FIGS. 5 and 6.
Through the small spaces P and Q between the screw threads and valleys that are inevitably formed when the bolt and nut are fitted together as shown in the figure, a flow path shown by arrows _a1 in Fig. 2 is formed, and the pressure in the internal space S is There is a place to escape when rising.
Moreover, since the communication destination is inside the trunk T, there is almost no intrusion of water or dust, especially water, and fogging of the lens is prevented.

FIGS. 3 and 4 show another embodiment of the present invention, in which the mounting bolt 6 does not have an insert structure and is a normal-shaped bolt with a head. However, a gap is provided between the bolt attachment part of the base 1 and the bolt head 6A to form an air vent hole 1C'.

Even with such a structure, an air flow path (arrow a ₂ ) communicating between the trunk T and the interior space S is formed as in the previous embodiment, and when the pressure in the interior space S increases, the interior air flows through the thread groove of the bolt. becomes an escape route. This prevents deformation of the base 1 and lens 2, and also prevents fogging of the lens.

As described above, according to the present invention, the interior of the trunk is communicated with the interior space of the display device using the mounting bolt, so that when the internal pressure increases due to a change in the temperature of the outside air, the internal air passes through the flow path. It can now be moved into the trunk, preventing the lens and base from deforming. Moreover, since the communication destination is inside the trunk, there is virtually no ingress of water through the air flow path, and fogging of the lens due to moisture can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is an enlarged view of part A in Fig. 1, Fig. 3 is a longitudinal sectional view showing another embodiment of the invention, Fig. 4 is B in Figure 3.
FIG. 5 is an explanatory diagram showing the space between the screw threads of the bolt and nut, and FIG. 6 is an explanatory diagram showing the small space between the valleys. 1...base, 1A...leg, 1B...protrusion,
1C and 1C'...air vent hole, 2...lens,
3, 6...Mounting bolt, 4...Nut, 5...Gasket, 10...Vehicle body, S...Interior space, T...
…trunk.

Claims (1)

[Scope of utility model registration request] Automotive display devices such as tail lamps and ornaments that are attached to the rear of the vehicle body are mainly composed of a hollow body formed by attaching a lens as a display surface to a base so as to create an internal space. A display device for an automobile, characterized in that the hollow body to which the bolt is attached is tightened to the vehicle body using a nut so that threads are exposed in the interior space and the trunk, respectively, so that the interior space and the trunk communicate with each other.