CN111396830A - A fully sealed car lamp - Google Patents

Abstract

The invention relates to a fully-sealed automobile lamp, which solves the defect that the existing lamp uses ventilation holes or breathable films to balance the air pressure inside and outside the lamp, which easily causes water vapor to enter the lamp and condense water mist on the inner surface of the lamp, which affects the use. , including a lens, a lamp body and a light bulb that are sealed and connected to each other, and the lamp body includes a connecting body and a reflection bowl that are sealed and connected to each other; The cavity is communicated with the air cavity inside the reflecting bowl where the bulb is located, and forms a fully sealed structure that is isolated from the external atmosphere and has a variable volume. The variable volume cavity is connected to the air cavity where the light bulb is located and forms a closed structure. This closed structure is completely isolated from the external atmosphere, and there is no gas exchange, which prevents external water vapor from entering the interior of the lamp to form water mist, and at the same time It can also automatically balance the air pressure inside and outside the lamp.

Description

A fully sealed car lamp

technical field

The invention relates to an automobile lamp, in particular to a fully sealed automobile lamp.

Background technique

The lamp is an important part of the vehicle and plays an important role in the safe driving of the vehicle; the lamp will generate a lot of heat during operation, which will cause the temperature and air pressure inside the lamp to increase; therefore, the traditional automobile lamp is non-sealed. Structure, there are ventilation holes or breathable film on the lamp to balance the air pressure inside and outside the lamp, the side effect of this is that water vapor will also enter the lamp. quality decline.

The Chinese Patent Office published a document No. CN103292294A on September 13, 2013, which is called an LED lamp with a waterproof and breathable membrane. The waterproof and breathable membrane can play the role of waterproof and dustproof, and at the same time, the gas exchange between the inside and the outside of the lamp housing can be realized. However, in this method, the gas exchange between the inside and outside of the lamp housing is used to balance the expansion of the gas generated by the increase in the internal temperature of the lamp. After the gas exchange, the cold air outside the lamp can easily enter the lamp housing, and the gas generated by the cold and heat exchange is easy to be in the lamp housing. Fogging occurs inside.

SUMMARY OF THE INVENTION

The invention solves the defect that the existing lamps use ventilation holes or breathable films to balance the air pressure inside and outside the lamp, which easily causes water vapor to enter the lamp and condense water mist on the inner surface of the lamp, which affects the use, and provides a fully sealed automobile lamp , through a variable cavity that can be freely expanded and contracted to communicate with the cavity where the bulb is located, so that the gas in the cavity where the bulb is located is completely isolated from the outside air and forms a fully sealed structure, preventing gas exchange, preventing external water vapor from entering, and at the same time automatically Balance the air pressure inside and outside the lamp.

The technical scheme adopted by the present invention to solve the technical problem is as follows: a fully-sealed automobile lamp, comprising a lens, a lamp body and a bulb that are sealed and connected to each other, and the lamp body includes a connecting body and a reflection bowl that are sealed and connected to each other; the vehicle lamp further includes The variable volume cavity is arranged outside the reflection bowl and separated from the outer surface of the reflection bowl. The variable volume cavity is communicated with the air cavity inside the reflection bowl where the light bulb is located and forms a fully sealed structure which is isolated from the external atmosphere and has a variable volume. The bulb of the bulb extends into the lamp body as the light source, and the lens, the lamp body and the bulb are completely sealed and connected to avoid air leakage at the connection part, and play the role of waterproof and gas proof; the lens, the connecting body and the reflecting bowl are composed of The air cavity where the light bulb is located, the outside of the reflection bowl is set in a variable volume cavity that communicates with the inside of the reflection bowl, the variable volume cavity is connected with the air cavity where the light bulb is located and forms a closed structure, this closed structure is completely isolated from the outside atmosphere, There is no gas exchange, which prevents the external water vapor from entering the interior of the lamp to form water mist; the variable volume cavity can freely shrink and expand, so that the temperature rises during the use of the lamp, and the internally expanded gas can enter the variable volume. In the cavity, the internal pressure of the lamp will not increase. When entering a low temperature environment, the gas in the variable cavity can enter the bulb cavity for balance, without external humid gas supplementation; the variable cavity and the The outside of the reflection bowl is phase-separated, so that the reflection bowl has enough heat dissipation surface to facilitate external air circulation and improve heat dissipation.

Preferably, the variable volume chamber adopts a balloon that can be deflated and expanded freely. This is a solution, the airbag is simple in structure, good in elasticity, and easy to use.

Preferably, the airbag is an airtight structure that only communicates with the air cavity where the bulb is located through the trachea. In addition to the connected interface, the airbag has no other interface, so as to avoid the phenomenon of air leakage of the airbag.

Preferably, there are two airbags, the two airbags are symmetrically arranged outside the reflection bowl, and the two airbags communicate with each other. Both of the two air bags are communicated with the air cavity where the light bulb is located, so that the two air bags make the gas exchange more smoothly.

Preferably, the variable volume chamber adopts a piston chamber provided with a freely sliding piston inside. This is the second solution. This convenient, variable volume chamber is safe to use and not easy to damage.

Preferably, the piston divides the piston cavity into two independent cavity parts, one cavity part is an outer cavity part communicated with the external atmosphere, and the other cavity part is an inner cavity part communicated with the air cavity where the bulb is located. The piston has strong sealing performance, and the piston can slide freely in the piston cavity with the pressure difference between the outer cavity and the inner cavity, so that the air pressure inside and outside the lamp is balanced.

Preferably, the reflection bowl is provided with air holes, the air holes are connected with the air pipe, and the air pipe is connected with the variable volume cavity.

Preferably, a lampshade is connected to the outside of the emission bowl, and the lampshade adopts a hollow structure. The lampshade plays a protective role, and the hollow structure is convenient for heat dissipation, and at the same time, rainwater can pass through the variable volume cavity and the outside of the reflection bowl from the hollow part of the lampshade to cool the variable volume cavity and the reflection bowl.

Preferably, the variable volume cavity is abutted with the inner wall of the lampshade.

Preferably, the lens and the lamp body are compressed and sealed by the lens end cap.

The beneficial effects of the invention are as follows: the bulb of the bulb extends into the lamp body as a light source, and the lens, the lamp body and the bulb are completely sealed and connected, so as to avoid the phenomenon of air leakage at the connection part, and play the role of waterproof and gas proof; The interior of the body and the reflector bowl form the air cavity where the light bulb is located. The outside of the reflector bowl is set in a variable volume cavity that communicates with the interior of the reflector bowl. The variable volume cavity is connected to the air cavity where the light bulb is located and forms a closed structure. The structure is completely isolated from the external atmosphere, and there is no gas exchange, which prevents external water vapor from entering the interior of the lamp to form water mist; the variable volume cavity can be freely contracted and expanded, so that the temperature rises during the use of the lamp, and the interior expands The gas in the variable volume can enter the variable volume cavity without causing the internal pressure of the lamp to rise. When entering a low temperature environment, the gas in the variable volume cavity can enter the bulb gas cavity for balance, without the need for external humid gas Replenish.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is a kind of explosion schematic diagram of the present invention;

Fig. 3 is the exploded schematic diagram of another angle of the present invention;

In the picture: 1, lens, 2, lens end cap, 3, connector, 4, lampshade, 5, bulb, 6, hollow, 7, reflector bowl, 8, air hole, 9, trachea, 10, interface, 11, air bag , 12, bubble beads, 13, buckle, 14, card slot.

Detailed ways

The technical solutions of the present invention will be further specifically described below through specific embodiments and in conjunction with the accompanying drawings.

Example 1: A fully sealed automobile lamp (see Figures 1, 2, and 3), comprising a lens 1, a lamp body and a bulb 4 that are sealed and connected to each other, and the lamp body includes a connecting body 3 and a reflector bowl 7 that are sealed and connected to each other. The lens and the connecting body are pressed and sealed by the lens end cover 2. The connecting body is in the shape of a truncated cone. The reflecting bowl has a bowl-shaped smooth inner surface. The connecting body and the reflecting bowl are connected by flanges and fixed by bolts. , a sealing ring is sandwiched between them, the bulb is fixed at the bottom of the reflection bowl, and the bulb 12 of the bulb extends into the reflection bowl. The lens, the connecting body and the inner space of the reflecting bowl form an air cavity where the light bulb is located.

There are two air holes 8 on the bowl wall of the reflection bowl, and two air pipes 9 are connected to the two air holes. The shape of the bowl is consistent, and the airbag is separated from the surface of the reflection bowl. There are two airbags, the two airbags are symmetrically arranged outside the reflection bowl, each airbag is provided with two interfaces 10, the interfaces are sealedly connected with the end of the trachea, the two airbags are connected with the air cavity where the light bulb is located, and form a connection with the outside. Air-isolated and variable volume fully sealed structure.

A lampshade 4 with a hollow 6 is provided outside the lamp body, a slot 14 is arranged on the side of the flange of the connecting body, and a buckle 13 is arranged at the front end of the lampshade, and the buckle is connected with the slot. The airbag is attached to the inner wall of the lampshade.

Embodiment 2: A fully sealed automobile lamp, in this embodiment, a piston cavity is used to replace the airbag, a freely slidable piston is arranged inside the piston cavity, and the piston divides the piston cavity into two independent cavity parts, one cavity part is The outer cavity part communicated with the external atmosphere, and the other cavity part is an inner cavity part communicated with the air cavity where the bulb is located. The inner cavity is connected to the air hole on the reflection bowl through the air pipe 9 in a sealed manner, and the inner cavity is communicated with the air cavity where the bulb is located and forms a fully sealed structure with variable volume completely isolated from the outside.

When the bulb generates heat during use, the gas inside the air cavity is heated and expanded, so that the pressure in the inner cavity increases, pushing the piston to move to one end of the outer cavity until a new balance is reached with the external atmosphere, and the piston stops. When the bulb is in the low temperature region, the pressure in the inner cavity decreases, and the piston moves toward one end of the inner cavity to compress the volume of the fully sealed structure until a new balance is reached.

The above-mentioned embodiments are only two preferred solutions of the present invention, and do not limit the present invention in any form. There are other variations and modifications under the premise of not exceeding the technical solutions recorded in the claims.

Claims (10)

1. A fully-sealed automobile lamp, comprising a lens (1), a lamp body and a bulb (4) that are sealed and connected to each other, characterized in that the lamp body comprises a connecting body (3) and a reflecting bowl (7) that are sealed and connected to each other; The vehicle lamp also includes a variable volume cavity arranged outside the reflection bowl and separated from the outer surface of the reflection bowl, the variable volume cavity is communicated with the air cavity where the bulb inside the reflection bowl is located, and forms a full seal which is isolated from the external atmosphere and has a variable volume. structure. 2. The fully-sealed automobile lamp according to claim 1, characterized in that the variable volume chamber adopts an airbag (11) that can be freely contracted and expanded. 3 . The fully-sealed automobile lamp according to claim 2 , wherein the airbag is a hermetic structure that only communicates with the air cavity where the light bulb is located through the trachea ( 9 ). 4 . 4. The fully-sealed automobile lamp according to claim 2 or 3, characterized in that there are two airbags, the two airbags are symmetrically arranged outside the reflector bowl, and the two airbags communicate with each other. 5 . The fully-sealed automobile lamp according to claim 1 , wherein the variable volume chamber adopts a piston chamber with a freely sliding piston inside. 6 . 6 . The fully-sealed automobile lamp according to claim 5 , wherein the piston divides the piston cavity into two independent cavity parts, one cavity part is an outer cavity part communicated with the external atmosphere, and the other cavity The part is an inner cavity part that communicates with the air cavity where the light bulb is located. 7. A fully-sealed automobile lamp according to claim 1 or 2 or 3 or 5 or 6, characterized in that the reflection bowl is provided with air holes (8), the air holes are connected to the air pipe, and the air pipe is connected to the variable volume cavity. 8. A fully-sealed automobile lamp according to claim 1 or 2 or 3 or 5 or 6, characterized in that a lampshade (4) is connected to the outside of the emission bowl, and the lampshade adopts a hollow (6) structure. 9 . The fully-sealed automobile lamp according to claim 8 , wherein the variable volume cavity is fitted with the inner wall of the lampshade. 10 . 10. A fully sealed automobile lamp according to claim 1 or 2 or 3 or 5 or 6, characterized in that the lens and the lamp body are pressed and sealed by the lens end cover (2).

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