JPH04136947U - Automotive high mount stop lamp - Google Patents

Abstract

(57) [Summary] [Purpose] With the same effective light emitting area, it is possible to reduce the number of light emitting diodes, which not only makes it possible to reduce costs, but also allows the entire surface of the lens to emit light uniformly. ,
The purpose of the present invention is to provide a high-mounted stop lamp for automobiles that improves visibility from the rear of the vehicle and leads to improved safety. [Structure] A prism 23 is formed on either the inner or outer surface of the lens 5 to convert the diffused rays emitted from the light emitting diode 4, which spread from side to side, into parallel rays parallel to the central ray. At the same time, a prism 17 is formed on the other surface of the lens 5 to convert the vertically spread diffused rays out of the rays emitted from the light emitting diode 4 into parallel rays parallel to the central ray.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a high mount for automobiles that is installed near the roof at the rear of the car body. Regarding top lamps.

0002

[Conventional technology]

Conventionally, cars have stop lamps attached to the rear of the car that turn on when the brake is pressed. However, recently, in order to improve the visibility of following vehicles, the roof area at the rear of the vehicle body has been High-mounted stop lamps with stop lamps attached to them are often used. .

0003 In addition, in conventional high-mounted stop lamps for automobiles, Figs. 8 and 9 As shown in FIG. There is something. In such a lens 30, the light is bent by the fisheye prism 32. The folded state is as shown in FIG. The diffused light rays spread to the sides are bent by the fisheye prism 32, but are flattened to the central light. When viewed from the front, the light emitting area is in the range of The light area was smaller.

0004

[Problem that the idea aims to solve]

As mentioned above, the lens structure of conventional high-mounted stop lamps for automobiles , as shown in Figure 11 (1), the light emitting part area is small when viewed from the front, and the light emitting diode The light emitting surface 40 shines in points only around the ode 34, and the light distribution value is satisfied. It is also difficult to obtain the necessary light distribution value and effective light emitting area. This requires a large number of light emitting diodes 34, which increases the cost. In addition, there was a problem in that visibility was poor because the light emitting surface 40 did not shine uniformly. .

[0005] This idea was made to solve the above problem, and the same effective light emission If the area is small, the number of light emitting diodes can be reduced, reducing costs. Not only is this possible, but the entire surface of the lens emits light evenly, making it easier to see from the rear of the vehicle. High-mounted stop lamps for automobiles improve visibility and improve safety. The purpose is to provide

[0006]

[Means to solve the problem]

In order to achieve the above purpose, this invention has been developed to provide both the inner and outer surfaces of the lens. Among the light rays emitted from the light emitting diode, the diffused rays spread to the left and right are used as the central light. Forms a prism that makes parallel light parallel to the line, and emits light on the other side of the lens. Among the light rays emitted from the photodiode, the diffused rays that spread vertically are flattened into a central ray. A prism is formed to make parallel light beams.

[0007]

[Effect]

With the above configuration, the prism on one side of the lens focuses light in the left and right directions, and the lens The other prism of the lens focuses the light vertically to obtain a satisfactory light distribution value, resulting in effective light emission. The light area can be increased. For this reason, if the effective light emitting area is the same, the light emitting diode The number of cards can be reduced, and costs can be reduced. Also, the lens Because the entire surface emits light evenly, visibility from the rear of the vehicle is improved and high-mounted vehicles are This leads to the improvement of safety, which is the original function of Top Lemp.

[0008]

【Example】

An embodiment of this invention will be described in detail with reference to the drawings.

[0009] Figure 1 is a front view of the high-mounted stop lamp for automobiles according to this invention, and Figure 2 is A vertical cross-sectional view of the lamp body installed near the roof at the rear of the vehicle body.

0010 In these figures, 1 is the lamp body, and 2 is the lamp housing integrated with the cover. 3 is a printed circuit board on which a light emitting diode 4 is attached, 5 is a lens, and A lamp assembly 30 is composed of a photodiode 4, a printed circuit board 3, and a lens 5. Ru.

[0011] The lamp housing 2 has an elongated shape in the horizontal direction, and has an opening on the rear surface. A mounting portion 31 consisting of a mouth portion is formed. This mounting portion 31 includes a lamp assembly. A solid body 30 is fitted.

0012 That is, the printed circuit board 3 has an elongated shape in the horizontal direction, and has a large number of light emitting lights on the surface side. The diodes 4 are installed at equal intervals in the horizontal direction, and the lamp housing 2 is installed. By fitting the lens 5 into the portion 31, it is fixed within the mounting portion 31. There is. Further, a plurality of screw holes 2b are formed in the cover portion 2a of the lamp housing 2. has been completed.

[0013] In addition, 11 is a bracket, and this bracket 11 has a metal plate with a cross section that is almost square. It is formed by bending it into a shape.

[0014] In the figure, 7 is a ceiling panel installed to cover the inside of the roof 6. A molding 8 is fitted to the peripheral edge of the ceiling panel 6 and the peripheral edge of the ceiling panel 7. Also, heaven At the rear of the panel 7, it is attached to the rear of the roof 6 via a weather strip 9. The bracket 11 is stopped at one end of the bracket 11 so as to be close to the rear window 10 that is closed. It is fixed by the same 12.

[0015] The other end side of the bracket 11 extends downward along the rear winding 10. , by inserting the upper opening of the lamp housing 2 into this other end from below. so that the space 13 between the bracket 11 and the rear window 10 does not interfere with the molding 8. The lamp body 1 can be attached as shown in FIG.

[0016] Further, the cover portion 2a of the lamp housing 2 covers the bracket 11 from the indoor side. so that the upper end reaches the ceiling panel 7, and the cover part 2 The set screw 14 inserted through the screw hole 2b of a is inserted into the screw hole 1 formed in the bracket 11. By screwing into 1a, the lamp body 1 can be attached to the vehicle body. ing. Note that 15 in the figure indicates a curtain rail.

[0017] The lens 5 is shown in FIGS. 3 to 6. The inner surface 16 of this lens 5 has a Rhythms 17, 17 are formed, and these prisms 17 have a trapezoidal cross section, Slopes 20 and 21 having opposite directions are formed above and below a central flat surface 19. The angle of inclination of these inclined surfaces 20 and 21 is approximately 72 degrees. Also, Len The outer surface 18 of the housing 5 has V-shaped grooves 22 along the top and bottom at predetermined intervals in the left-right direction. A large number of V-shaped grooves 22 are formed, and the opening angle of these V-shaped grooves 22 is from 112 degrees to 124 degrees. Made in a range. Therefore, the outer surface 18 of the lens 5 has adjacent V-shaped grooves 2. 2 form trapezoidal planar prisms 23, and these prisms 23 are aligned in the left and right direction. They are lined up.

[0018] The state of refraction of light by the prism 23 on the outer surface portion 18 of the lens 5 is shown in FIG. 7(1). . Of the light rays emitted from the light emitting diode 4, the diffused rays that spread to the left and right are Due to the inclined surfaces 24 and 25 of the beam 23, the light beam passing through the flat surface 26 is parallel to The light becomes parallel, and diffusion is prevented. Also, when viewed from the front, the light emitting part is The range is .

[0019] The state of refraction of light by the prism 17 on the inner surface 16 of the lens 5 is shown in FIG. 7(2). . Among the light rays emitted from the light emitting diode 4, the diffused light rays that spread upward and downward are Due to the inclined surfaces 20 and 21 of the beam 17, the rays passing through the flat surface 19 are parallel to each other. The light becomes parallel, and diffusion is prevented. Also, when viewed from the front, the light emitting part is The range is .

[0020] As mentioned above, the prism 23 on the outer surface 18 of the lens 5 focuses the light in the left and right direction. In addition, the prism 17 on the inner surface 16 of the lens 5 condenses light in the vertical direction to achieve satisfactory results. The light distribution value is obtained, and the effective light emitting area (shaded area) is increased as shown in Figure 11 (2). can. For this reason, if the effective light emitting area is the same, the number of light emitting diodes 4 can be reduced. It becomes possible to eliminate it. In addition, since the entire surface of the lens 5 emits light uniformly, Visibility from both rear sides is improved. Note that a prism 23 is provided on the outer surface 18 of the lens 5. , a prism 17 was formed on the inner surface 16, but the prism 17 was formed on the outer surface 18. , a prism 23 may be formed on the inner surface portion 16, respectively.

[0021]

[Effect of the idea]

As detailed above, this idea is based on the fact that a light emitting device is placed on either the inner or outer surface of the lens. Of the light rays emitted from the diode, the diffused rays A that spread to the left and right are flattened to the central ray. In addition to forming a prism that makes parallel light beams, a light emitting diode is installed on the other side of the lens. Of the light rays emitted from the ode, the two diffused rays that spread vertically are parallel to the central ray. Since we formed a prism that makes parallel light beams, we can use one prism of the lens to The other prism of the lens focuses the light in the vertical direction to achieve a satisfactory distribution. The light value can be obtained and the effective light emitting area can be increased. For this purpose, with the same effective light emitting area, If there is, the number of light emitting diodes can be reduced and costs can be reduced. Become. Additionally, since the entire surface of the lens emits light uniformly, visibility from the rear of the vehicle is improved. This leads to improved safety, which is the original function of high-mounted stop lamps. .

[Brief explanation of drawings]

FIG. 1 is a front view of a high-mount stop lamp for an automobile, which is an embodiment of the invention.

FIG. 2 is a cross-sectional view of the high-mounted stop lamp for the automobile in an attached state.

FIG. 3 is a partially omitted front view of the lens.

FIG. 4 is a plan view of the same.

FIG. 5 is a cross-sectional view taken along line A-A in FIG.

FIG. 6 is an enlarged view of the portion in FIG. 4B.

FIG. 7(1) is an explanatory diagram of the state of refraction of light by a prism on the outer surface of the lens. (2) is an explanatory diagram of the state of refraction of light by the prism on the inner surface of the lens.

FIG. 8 is a partially omitted front view of a lens in a conventional high-mount stop lamp for an automobile.

FIG. 9 is a sectional view taken along line C-C in FIG. 8;

FIG. 10 is an explanatory diagram of a state of refraction of light by a fisheye prism of a lens in a conventional high-mount stop lamp for an automobile.

FIG. 11(1) is an explanatory diagram of a light emitting surface of a lens according to a conventional example. (2) is an explanatory diagram of the light emitting surface of the lens according to this invention.

[Explanation of symbols]

4 Light emitting diode 5 Lens 17, 23 Prism

Claims (1)

[Scope of utility model registration request] [Claim 1] On either the inner or outer surface of the lens,
A light emitting diode is formed on the other surface of the lens to form a prism that converts the diffused light beams spread left and right out of the light emitted from the light emitting diodes into parallel light beams parallel to the central light beam.
A high-mounted stop lamp for an automobile, characterized in that a prism is formed to convert a diffused ray of light emitted from the top and bottom into a parallel ray of light parallel to a central ray.