JPH0455898B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high-mounted brake light for an automobile that is mounted on a vehicle package tray.

[Problems to be solved by conventional technology and invention]

Conventional lamps of this type have a structure in which the main body protrudes from the surface of the package tray, which is undesirable in terms of appearance. In order to improve this problem, some attempts have been made to cover such lighting equipment to make it look better, but in any case, visibility is impaired.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a high-mounted brake light for an automobile whose lamp body does not protrude from the surface of a package tray and which has a simple structure.

[Means and actions for solving problems]

In order to achieve this object, the present invention provides a louver-like polarizing filter 14 positioned along the surface of the package tray 1 to emit parallel light beams toward the rear window glass 2, and a louver-shaped polarizing filter 14 positioned behind this filter to emit parallel light beams toward the rear window glass 2. It is composed of a lamp body 10 equipped with a light source 12 that makes the light beam incident at a louver angle, and a lens 15 that is attached to the light incident area along the rear window glass 2 and deflects the incident parallel light beam backward.

When the light source 12 emits light during braking, the louver-shaped polarizing filter 14 allows only parallel light to pass through the vehicle interior and enter the lens 15, which deflects the incident light from below the diagonal and directs it toward the rear. let

[Embodiments of the invention]

In FIG. 1, reference numeral 10 denotes a lamp body of a high-mounted brake light according to the present invention, which is mounted on the package tray 1 so that its front surface is substantially flush with the lamp body. This lamp body 10 is housed in a package tray 1, and includes a housing 11 having an opening at the front, a light source 12 which is a bulb or a light emitting diode, and a light source 12 located above the housing and having a rear window glass 2 on the outside. a red inner lens 13 having a correction lens cut portion 13a that deflects toward the package; and a louver-shaped inner lens 13 that is located further forward of the opening and is substantially flush with the surface of the package tray 1, and whose surface is covered with a protective lens 14a. It is composed of a polarizing filter 14.

The front side edge 11a of the housing 11 slightly protrudes from the package tray 1 to prevent luggage and the like from entering. The louver set angle θ of the louvered polarizing filter 14 is set so that the incident parallel light rays illuminate a predetermined light emitting area of the rear window glass 2. This type of filter is the product name
It is well known as LCF (Light control filter).

A colorless and transparent lens 15, which forms part of a high-mounted brake light, is attached to a region along the inner surface of the rear window glass 2 where parallel light rays are incident. On its outer surface, as shown in an enlarged view in FIG. 3, a correction lens cut portion 15b is formed which includes a diffusion portion 15a that slightly diffuses the incident light beam with respect to the horizontal plane to improve visibility. Total reflection. This lens is fitted into a recess on the inner peripheral surface of an opaque circular protector 16 adhered to the glass surface so as to prevent edge light.

When the light source 12 is turned on during braking, the incident light is deflected by the inner lens 13 toward the lens 15 as a parallel beam. This deflected parallel light beam becomes a highly accurate parallel light beam by passing through the louver-shaped polarizing filter 14, and does not leak into the vehicle interior outside the optical path. The lens 15 deflects and irradiates the incident parallel light from below the diagonal eye to the rear to issue a red light alarm.

In the above-mentioned embodiment, the inner surface of the inner lens 13 may not have a cut if the light source 12 is a surface light source or a reflective paraboloid, but if it is a point light source, there is a cut as shown in FIG. A Fresnel lens cut portion 13b is formed in which the refraction angle gradually changes concentrically. However, it is also possible to eliminate the need for deflection by an inner lens or to replace the condensing lens by displacing the light source, adjusting the inclination of the surface light source, or the like. As shown in FIG. 5, the lens 15 has a reflecting surface 15c made of vapor-deposited aluminum on its inner surface, and a diffusing surface 15d on its outer surface.
It can also be formed to include. Further, as shown in FIG. 6, instead of the protector 16, the outer periphery of the lens may be bent to prevent light from leaking due to refraction.

〔Effect of the invention〕

As described above, according to the present invention, by storing the lamp body in the package tray, no structure other than the rear window lens can be seen above the package tray, and the top of the package becomes clear. Furthermore, the rear window lens has a simple shape and is transparent, so it does not spoil the appearance.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a high-mounted brake light for an automobile according to an embodiment of the present invention, Figs. 2 and 3 are partially enlarged sectional views of the same embodiment, and Figs. FIG. 7 is a partially enlarged sectional view of various parts according to another embodiment of the invention. 1...Package tray, 2...Rear window glass, 10...Lamp body, 12...Light source, 1
4... Louver-shaped polarizing filter, 15... Lens.

Claims (1)

[Claims] 1. A lamp body that causes parallel light beams from a light source behind it toward the rear window glass to enter a louver-shaped polarizing filter positioned along the package tray surface at an incident angle corresponding to the louver angle, and is installed along the rear window glass. and a lens that deflects the parallel light beam incident from the filter so as to irradiate it rearward.