JPS635124Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a vehicle lamp.

It is necessary for vehicle lamps to have ventilation holes to exhaust hot air and moisture inside the lamp body to the outside of the lamp body, and although various improvements have been made to the position and shape of the ventilation holes, it is still not satisfactory. Nothing is provided.

In view of the current situation, the present invention aims to provide a vehicular lamp that does not impair the appearance when turned on and can effectively exhaust the inside of the lamp body.

An example of implementing the present invention will be described below based on the drawings.

The lamp body 1 is formed into a circular or rectangular box shape, and has a reflecting mirror 2 integrally formed on its bottom wall and a bulb socket mounting hole 3 formed therein.

The reflecting mirror 2 is formed by continuously forming a number of paraboloids of revolution 2a concentrically with the filament F of the bulb as the focal point, and a vent hole 4 is formed through the ineffective reflecting portion 2b.

The invalid reflective portion 2b of the reflector 2 is a portion that connects a large number of paraboloids of revolution 2a, and refers to a portion that becomes a non-emissive surface when turned on in terms of light distribution performance. Ventilation holes 4 are drilled through the holes (in the illustrated example, two places, upper and lower).

The ventilation hole 4 connects the inside and outside of the lamp body 1, and a waterproof tube 5 is attached to the back side of the reflector 2 in communication with the ventilation hole 4 to prevent water from accidentally entering the inside of the lamp body through the ventilation hole 4.
For example, the support 9 has a bulged portion 8, 8 at its tip.
It is supported by:

Further, the lens 6 installed on the front surface of the lamp body 1 may be the same as the conventional one, but as in the illustrated embodiment, at all points on the concentric circle of each paraboloid of revolution 2a, the tangent line and the lens step 7 By designing the angle to be 45 degrees or less and the width of the step to be 4 mm or less, the striped pattern of each concentric paraboloid of revolution 2a is no longer visible from the front surface of the lens 6 when the lights are off, and when the lights are on, Since the light distribution reflected by each paraboloid of revolution 2a is appropriately diffused, the lamp looks good both when not lit and when lit.

In this way, the present invention is made by opening a ventilation hole in the ineffective reflection part of the reflector, which is formed by continuously forming a large number of paraboloids of revolution in a concentric circle, so that the inside of the lamp body can be effectively exhausted, and There is no fear that the ventilation holes will spoil the appearance when the lights are turned on, and the product can have high commercial value.

Moreover, since the vent hole is simply opened in the ineffective reflecting portion of the reflecting mirror, it is easy to manufacture and can be provided at low cost.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the lamp according to the present invention, and FIG. 1 is a partially cutaway front view, and FIG. 2 is a longitudinal sectional side view. In the figure, 1 is a lamp body, 2 is a reflecting mirror, 2a is a paraboloid of rotation, 2b is an ineffective reflection part, and 4 is a ventilation hole.

Claims (1)

[Scope of utility model registration request] A vehicular lamp characterized in that a ventilation hole is formed in an ineffective reflection part of a reflector formed by continuously forming a number of paraboloids of revolution in a concentric circle.