JPH0124806Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field of the present invention The present invention relates to the structure of an auxiliary stop light that is attached to the rear passenger seat behind the rear seat of a vehicle toward the rear window.

B. Prior Art The structure of this type of auxiliary stop light that has been used in the past will be described with reference to FIG. A fisheye lens group 2 is formed on the inner surface of the inclined part of the lamp body 1, which is provided with a lens portion, and a flat reflector 5' is disposed to oppose the fisheye lens group 2. Below these, a reflector consisting of a paraboloid of revolution is formed. 5, and a light bulb 4 is placed at its focal point, so that the projected light from the light bulb is reflected by the flat reflector 5, further refracted and reflected by the fisheye lens group 2, and then proceeds toward the rear of the vehicle. There is.

C. Problems with the prior art However, with such a configuration, the depth dimension in the longitudinal direction of the vehicle becomes long, and it is too large and difficult to install in a narrow space called the rear passenger seat behind the rear seat. Not,
Installing a flat reflector has disadvantages such as an increase in the number of parts and a corresponding increase in cost.

D. Purpose of this proposal This proposal aims to eliminate the problems with the design as much as possible, and aims to provide a product that has a small depth dimension, facilitates installation work, and is inexpensive.

E. Main Points of the Invention The present invention shortens the depth of the lamp body by omitting the plane reflecting mirror 5, and furthermore, the lens portion has a fisheye lens group on the outer surface and a serrated lens group consisting of prism steps on the inner surface. It is characterized in that it is configured so that the projected light directed toward the rear is diffused.

F. Embodiment of the present invention Figure 1A is a cross-sectional view of an embodiment of the present invention, and Figure 1B is a partially enlarged cross-sectional view of the lens portion. ) protrudes upward [see A in the same figure], and the other side (left side) is inclined downward, and the outer surface of this lens part has a fisheye lens group 2, and the inner surface thereof has a serrated shape consisting of prism steps. Lens groups 3 are formed, respectively, and the shape of each element of the prism step is such that, as shown in FIG. The reflective surface 10 is designed to completely reflect the light toward the left side in the figure.

Note that 1 is a lamp body, 4 is a light bulb, and 5 is a reflecting mirror formed of a paraboloid of revolution formed so as to project light from the light bulb toward the entire length of the sawtooth lens group 3.

G. Effects of the present invention The present invention has the above-mentioned configuration. Next, we will discuss the functions and effects. Since a flat reflector is not placed inside the lamp body 1 unlike the conventional type, the depth dimension of the lamp body 1 itself ( This not only makes it easier to install in a narrow space behind the seat, but also reduces the number of parts.As shown in the cross-sectional view of Figure 1A, the reflector 5 is , is a paraboloid of revolution so that the light from the light bulb 4 is concentrated and projected onto the lens part, and the rear part of the lens part is inclined downward (leftward), and the entire outer surface of the lens part is tilted downward (leftward). A fisheye lens group 2 for reflecting and projecting light has an incident surface 9 on its inner surface, in which the shape of each element of the prism step is parallel to the lower surface, and the upper surface directs the light from the incident surface 9 backward (towards the left in the figure). Since the light beams 6, 7, and 8 entering each incident surface 9 are reflected backward by each reflective surface 10, each fisheye lens group 2 completely reflects the light in the vertical direction behind the vehicle. Since it is reflected and becomes diffused light, it can be more clearly seen by following vehicles, and has various effects that can achieve the purpose of the present invention, which is to obtain a small and inexpensive product.

[Brief explanation of the drawing]

FIG. 1A is a sectional view showing an embodiment of the present invention, FIG. 1B is a partially enlarged sectional view of a lens portion, and FIG. 2 is a sectional view showing a conventional example. 1...Lighting body, 2...Fisheye lens group, 3...Sawtooth lens group, 4...Light bulb, 5...Reflector, 6,
7, 8...Light, 9...Entrance surface, 10...Reflection surface.

Claims (1)

[Scope of utility model registration request] A light body includes a lens portion that is tilted so as to project upward on one side and project light toward the rear of the vehicle; a light bulb that is loaded into the light body; and a light bulb that projects light from the light bulb into the lens. A light fixture disposed in a rear parcel self facing rearward behind a rear seat of a vehicle, comprising a reflector consisting of a paraboloid of revolution concentrating on a portion, the lens portion being a spherical surface with a continuous outer surface. a fisheye lens group 2 consisting of a serrated lens group 2, a serrated lens group 3 consisting of a prism step having an incident surface 9 and a reflecting surface 10 whose inner surfaces are parallel to each other;
Auxiliary stop lights characterized by being formed respectively.