JPH10244874A - High-mount strap lamp for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase visibility and the rear visual field by locating a part of the upper side of a body above the upper edge section of a rear window glass, reflecting the reflected light downward with a reflector provided in a body, and sending the light outward through a lens. SOLUTION: A part of the upper side of an indoor type high-mount strap lamp(HMSL) 1 is located above the upper edge of a rear window glass RWG in the fixed support state, only the lower portion of the HMSL 1 is provided along the rear window glass RWG, and the overlap size L1 in the vertical direction of the rear window glass RWG and the HMSL 1 is reduced even when a decorative cover 3 is provided. The light projected to the rotary paraboloid in the lower region of a reflector 21 is reflected as the parallel light along the optical axis, and it is sent outward through a lens 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stop lamp disposed inside a rear window glass of an automobile, that is, an indoor high mount stop lamp (hereinafter, HMSL), and more particularly to an HMSL having an enhanced rear view of the automobile.

[0002]

2. Description of the Related Art As an HMSL provided inside a rear window glass of an automobile, that is, in a passenger compartment, an HMSL disposed above the rear window glass in order to secure a rear view particularly for a driver has been proposed. FIG. 7 is a cross-sectional view showing a schematic configuration of the HMSL 1A, which is disposed at an upper edge of a rear window glass RWG attached to a rear body opening of an automobile with its light emitting surface facing rearward. The HMSL 1A includes a body 2A having an inner surface formed as a reflector, a lens 4A attached to a front opening of the body, and a valve 5A internally supported in the body. The reflected light is reflected by the reflector 21A, emitted to the rear of the vehicle through the lens 4A, and the rear window glass RWG notifies the following vehicle of the brake operation. Normally, the HMSL is fixedly supported on a part of the vehicle body such as a roof panel using a bracket provided on a part of the body, and the HMSL body and valve wiring are exposed to the vehicle interior. In order to prevent the appearance from being deteriorated, a configuration is adopted in which the whole is covered with a decorative cover 3A.

[0003]

In such a conventional indoor HMSL, the reflector 21A formed on the inner surface of the body 2A has a parabolic cross-sectional shape, and the valve 5A is disposed at the focal position. When the light from the bulb 5A is reflected by the reflector 21A, the light is transmitted through the lens 4A as parallel light. Also,
In this kind of HMSL, in order to improve its visibility,
It is preferable to increase the luminance on the light emitting surface, and for that purpose, it is required to increase the reflection area of the reflector,
The height dimension of the body in the vertical direction is inevitably large. Therefore, the optical axis of the HMSL lens, that is, HM
When the HMSL 1A is disposed so that the optical axis of the light emitted from the SL is directed to an angle close to the horizontal required by the standard, as shown in FIG. 7, the entire lens 4A and the body 2A of the HMSL 1A are rear-windowed. It has to be placed at a position facing the glass RWG, so that the HMS
L1A blocks the rear view through the rear window glass in a region covering the entire height of the body 2A. In addition, the height dimension L2 at which the HMSL 1A is overlapped with the rear window glass RWG is further increased by the decorative cover 3A provided for improving the appearance of the HMSL in the vehicle interior, so that the rear view is further reduced.

[0004] It is an object of the present invention to provide an HMLS which can enhance the visibility of the HMSL and enhance the rear view of the vehicle by the HMSL.

[0005]

According to the present invention, there is provided an HMSL which is mounted on a roof in a vehicle cabin in a state facing a rear window glass of an automobile, wherein at least a part of an upper side of a body is higher than an upper edge of the rear window glass. And a reflector provided in the body reflects downward the light reflected by the region corresponding to the upper part of the body, out of the light emitted by the bulb, and a lens. Is transmitted and emitted. That is, even when the vertical dimension of the reflector is increased in order to increase the brightness of the lens, the upper part of the body corresponding to the upper area of the reflector is retracted above the rear window glass to improve the visibility of the HMSL. At the same time, the rear view in the rear window glass is improved.

Here, the lower surface of the body is oriented parallel to the optical axis of the lens. In the reflector, for example, the lower region corresponding to the vertical dimension of the lens is configured as a paraboloid whose cross-sectional shape is the focus of the bulb, and the upper region is configured such that the cross-sectional shape of the reflector reflects the light of the bulb. It is configured as a special paraboloid that has a light-collecting property and reflects downward with respect to the optical axis.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an indoor HM of a passenger car according to the present invention.
FIG. 2 is an external view applied to the SL, and FIG. 2 is an external view of the HMSL. As shown in these figures, a rear window glass RWG is attached to the rear vehicle body opening of the passenger car CAR by a weather strip, and the HMSL 1 has an inner surface of the rear window glass RWG at a position facing the upper edge of the rear window glass RWG. And is fixedly supported at a part of the roof panel RP of the vehicle body. As the fixed support structure, a bracket provided on a part of the HMSL body 2 is used as described later. Further, a decorative cover 3 is formed in a curved shape so as to cover the side surface from the lower surface of the HMLS, and the front edge portion is extended to a position close to the inner surface of the rear window glass. In harmony with the vehicle, the appearance inside the vehicle is improved.

FIG. 3 is a plan view in which a part of the HMSL is cut away, FIG. 4 is an enlarged sectional view taken along the line AA, and FIG. 5 is a partially exploded perspective view. The HMSL 1 includes a body 2 having a flat, upward U-shape having a flat shape when viewed from the front and having a long side and an upper opening, a red lens 4 attached to a front opening of the body 2, It comprises a plurality of, here three, bulbs 5 as light sources attached to the body 2. The inner surface of the body 2 is mirror-finished, and three reflective curved surfaces (reflectors) are provided on the back side in the left-right direction.
The valve mounting holes 22 are respectively opened at positions slightly deviated below the apex position of each of the reflectors 21, and the valve 5 is mounted. In a region near the vertex of each of the reflectors 21, a rectangular flat heat-shielding plate portion 23 is formed so as to protrude vertically upward, and is formed by a hinge groove 24 formed at a boundary portion with the reflector. It is bent and tilted substantially horizontally at a position directly above the valve 5.

The lens 4 has a plurality of lances 41 protruding from a plurality of peripheral portions thereof, and has a lower edge and both sides of a front opening of the body 2 and the heat shield plate 23 which is horizontally inclined. Is attached to the body 2 by being engaged with the engagement holes 25 respectively provided in the body 2. The lens 4 has an upper edge located above an effective surface effectively functioning as a light-emitting surface thereof formed and exposed as a tapered surface portion 42 inclined slightly toward the rear surface, as described above. When the HMSL 1 is disposed along the inner surface of the rear window glass RWG, the tapered surface portion 42 is disposed along the opening edge of the roof panel RP, so that the surface of the lens 4 approaches the rear window glass RWG. It is configured to be arranged.

Further, each reflector 21 of the body 2
Brackets 26 are formed to protrude upward at two places therebetween, and the body 2 is fixed to the roof panel RP by screws 6 inserted into the brackets 26. Further, at two places on the left and right of the back of the body 2,
The boss 27 protrudes toward the back side, and this boss 2
At 6, the decorative cover 3 is attached by machine screws 7. The decorative cover 3 is provided with a blind hole 31 so that the head of the machine screw 7 is not exposed in the vehicle interior, and the machine screw 7 is screwed into the boss 27 at the bottom surface of the blind hole 31. Have been combined. Further, a claw body 32 is provided on the inner bottom surface of the decorative cover 3, and the claw body 32 is fitted to a rib (not shown) provided on the outer bottom surface of the body 2 to attach the claw body 32. Helps maintain state.

Here, the optical structure of the reflector 21 and the lens 4 will be described. As shown in FIG. 6 in which the reflector 21 of the body 2 and a part of the lens 4 are enlarged, the reflector 21 has an upper region SU.
And the lower region SD have different vertical cross-sectional shapes. That is, the lower region SD is formed as a paraboloid of revolution having the light emitting point (filament position) of the bulb 5 as a focal point, and the light emitted from the bulb 5 is converted into parallel light along the optical axis O of the lens 4. The light is reflected toward the lens 4. The upper region SU is formed as a special paraboloid that reflects the light emitted from the bulb 5 downward with respect to the optical axis O in a condensed state. As this special paraboloid, for example, a rotating paraboloid whose optical axis is directed downward and whose focal position is located ahead of the bulb 5 is adopted. On the other hand, on the outer surface of the lens 4, a number of fish-eye steps 43 having light refraction characteristics for slightly diffusing transmitted light vertically and horizontally are arranged. Further, on the inner surface thereof, a refraction step 44 having a saw-tooth cross section is formed in a lower edge region below the optical axis O, and the light transmitted through the refraction step 44 is refracted somewhat upward. Have been.

The HMSL 1 configured as described above is shown in FIG.
As shown in the figure, the bracket 26 is fixedly supported on the roof panel RP by the bracket 26 and the screw 6, and is disposed at an inner surface position of the upper edge of the rear window glass RWT. At this time,
The body 2 is arranged such that a part of its upper part is located above the opening edge of the leaf panel RP, that is, on the roof side, and the lower surface of the body 2 is in a direction parallel to the optical axis O of the lens 4, usually Pointed horizontally. Also, lens 4
Since the tapered surface 42 is arranged along the inner surface of the opening edge of the roof panel RP, the lens 4 can be arranged close to the inner surface of the rear window glass RWG, while the effective surface of the lens 4 is all Rear window glass RWG
, And can be viewed from the outside of the vehicle. Therefore, in this fixed support state, HMSL
1, the upper part thereof is located above the upper edge of the rear window glass RWG, and only the lower part of the HMSL 1 is provided along the rear window glass RWG, and as a result, the decoration Even in a state where the cover 3 is provided, the vertical overlapping dimension L1 between the rear window glass RWG and the HMSL1 is reduced, and the rear view through the rear window glass RWG is improved.

On the other hand, as shown in FIG. 6, of the light emitted by the bulb 5,
The light projected on the paraboloid of revolution D is reflected as a parallel light flux along the optical axis O, and is emitted through the lens 4.
Further, the light projected on the special paraboloid of the upper region SU of the reflector is reflected as a converging light flux slightly downward with respect to the optical axis O, and when transmitted through the lens 4, In the lower region of the inner surface of No. 4, light is refracted somewhat upward by the refraction step 44, so that the refracted light is almost parallel to the optical axis. In particular, much of the light reflected downward on the special paraboloid is directed by this refraction step 44 in a direction parallel to the optical axis. Further, the light is transmitted as it is in the upper region of the inner surface of the lens 4 and slightly diffused in the outer surface of the lens in the diffusion step 43, so that the required alignment characteristics required for the HMSL are obtained. Therefore, even if the entire body 2 of the HMSL 1 is not positioned facing the rear window glass RWG, the brightness of the lens 4 is increased to enhance the visibility, and the required alignment characteristics are secured. Thereby, H
In the MSL 1, it is possible to increase the area of the reflector 21 to increase the brightness of the lens 4, while improving the rear view of the vehicle.

In the above-described embodiment, since the heat shield plate 23 provided on a part of the body 2 is bent and disposed at a position immediately above the valve 5, the heat generated by the valve 5 causes the heat generated by the roof panel RP directly above the valve 5. Can be suppressed from being directly heated. The heat shield plate 23 is engaged with the lance 41 provided on the lens 4 to maintain its posture, and on the other hand, stably holds the upper edge of the lens 4.
Further, in the above-described embodiment, three reflectors are provided on the body 2; however, two or one reflector may be configured according to the required horizontal width of the HMSL. In addition, the reflector can be applied to an HMSL configured separately from the body. on the other hand,
The steps provided on the lens are not limited to the above-described structure.

Here, the HMSL of the present invention can be applied not only to passenger cars but also to indoor HMSLs installed on the roof side in various automobiles.

[0016]

As described above, according to the present invention, at least a part of the upper part of the body of the HMSL attached to the roof in the passenger compartment in a state facing the rear window glass of the vehicle is at least partially extended from the upper edge of the rear window glass. And a reflector provided in the body reflects downward the light reflected by the region corresponding to the upper part of the body, out of the light emitted by the bulb, and a lens. The upper part of the body corresponding to the upper area of the reflector is positioned higher than the rear window glass even if the vertical dimension of the reflector is increased to increase the lens brightness. It is possible to retreat, and it is possible to improve the visibility of the HMSL while improving the rear view through the rear window glass.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of the rear part of a motor vehicle equipped with the HMSL of the present invention.

FIG. 2 is an external view of the HMSL of the present invention.

FIG. 3 is a plan view in which a part of the HMSL of FIG. 2 is cut away.

FIG. 4 is an enlarged sectional view taken along the line AA in FIG.

FIG. 5 is a partially exploded perspective view of the HMSL of FIG. 2;

FIG. 6 is a schematic enlarged cross-sectional view showing the structure of a reflector and a lens and an irradiation state of light rays.

FIG. 7 is a schematic cross-sectional view for explaining a conventional HMSL and its problems.

[Explanation of symbols]

 Reference Signs List 1 HMSL 2 Body 3 Decorative cover 4 Lens 5 Valve 21 Reflector 23 Heat shield plate 26 Bracket 43 Diffusion step 44 Refraction step SU Reflector upper area (special paraboloid) SD reflector lower area (rotating paraboloid) RWG Rear window Glass RP roof panel

Claims (3)

[Claims] 1. A vehicle having a body as a light source and a reflector provided therein and a lens provided at a position in front of the body, wherein the body is opposed to a rear window glass of the vehicle. In a high-mount stop lamp attached to a roof, at least an upper part of the body is located above an upper edge of the rear window glass, and the reflector is configured to emit light emitted by the bulb. A high-mounted stop lamp for an automobile, wherein the light reflected by a region corresponding to an upper part of the body is reflected downward, and transmitted through the lens to be emitted. 2. The high-mount stop lamp for an automobile according to claim 1, wherein a lower surface of the body is oriented in parallel with an optical axis of the lens. 3. The reflector has a lower region corresponding to the vertical dimension of the lens, the cross-sectional shape of which is formed as a paraboloid whose focal point is the valve, and an upper region, the cross-sectional shape of which is the valve. 3. The high mount stop lamp for an automobile according to claim 2, wherein said special mount is formed as a special paraboloid which reflects said light downward with respect to said optical axis with a condensing property.