JP2509111B2 - Vehicle lighting - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a new vehicular lamp.

More specifically, in a vehicular lamp in which the left and right ends or the upper and lower ends of the reflector are sandwiched between a lamp body and a front lens to support the reflector, the reflector vibration is prevented in the lamp body. An object of the present invention is to provide a new vehicular lamp capable of preventing fluctuation of light and improving visibility.

[0003]

2. Description of the Related Art Conventionally, a front lens of a reflector is attached to a lamp body in a vehicular lamp including a lamp body having a front opening, a reflector arranged in the lamp body, and a front lens covering a front opening of the lamp body. In some cases, the lamp body and the front lens support the lamp body in a sandwiched manner.

FIG. 8 shows an example of such a conventional vehicular lamp.

In FIG. 1, reference numeral a denotes a vehicular lamp, which is arranged in a lamp body a and a lamp body b which is open in the front direction and has a horizontally long box shape, and a front lens c which covers the front opening of the lamp body b. The reflector d is provided and has a reflecting surface in the shape of a paraboloid of revolution, and a light emitting portion, that is, a filament e, in which a filament is arranged at a substantially focal position of the reflector d.

Reference numeral f denotes a lens mounting groove formed so as to be opened forward at the opening edge of the lamp body b.

Reference characters g, g denote bosses formed on both left and right sides of the rear wall of the lamp body b so as to project forward at substantially the center in the vertical direction thereof. The bosses g, g are opened forward. Screw holes h, h are formed respectively.

Further, the front end faces of the bosses g are located rearward of the opening face of the lamp body b.

The front lens c has a side wall i projecting rearward from the peripheral edge thereof, and the rear end of the side wall i is fitted into the lens mounting groove f of the lamp body b, whereby the front lens c is formed.
Covers the front opening of the lamp body b.

Reference numerals j and j denote left and right side portions of the front lens c, and bosses formed so as to project rearward at positions corresponding to the bosses g, g of the lamp body b. , J are formed with insertion holes k, k through which mounting screws described later are inserted.

The reflector d has a bowl-like shape with its central portion protruding rearward, and is formed in a horizontally long rectangular shape when viewed from the front, and a reflecting surface is formed on the inner surface thereof.

Reference numeral 1 denotes a light bulb mounting hole formed in the central portion of the reflector d, and the light bulb e is attached in an internally fitted shape.

M and m are the centers of the left and right side portions of the reflector d in the vertical direction, and are the bosses g, g and j, j.
The seats m and m have vertical surfaces facing forward and backward, and are circular when viewed from the front. Through holes n, through which a mounting screw described later is inserted, are formed in the central portion of the.

Then, the reflector d is positioned in the lamp body b so as to face forward and the rear surfaces of the seats m, m are brought into contact with the front end surfaces of the bosses g, g of the lamp body b, and then, , The rear end of the side wall i so that the front lens c covers the front opening of the lamp body b.
It is fitted in the lens mounting groove f of.

At this time, the rear end surfaces of the bosses j, j of the front lens c are brought into contact with the front surfaces of the seat portions m, m, whereby the insertion holes k, k of the bosses j, j and the seat portions m, m are made. The insertion holes n, n are communicated with the screw holes h, h of the boss g, g.

In this state, however, the mounting screws o, o are inserted into the insertion holes k, k of the bosses j, j from the front side of the front lens c, and the insertion holes n, n of the seat portions m, m are inserted. After that, the front lens c is attached to the lamp body b by being screwed into the screw holes h of the bosses g, and the reflector d is supported by the front lens c and the lamp body b in a sandwiched manner. It

[0017]

However, in such a vehicular lamp a, since the reflector d is supported by the lamp body b only at the left and right side portions thereof, the vibration of the running vehicle causes There is a problem in that the reflector d vibrates in the vertical rotation direction about the line connecting the seats m as a center line, and the light distribution of the vehicular lamp a fluctuates, resulting in poor visibility. .

[0018]

Therefore, in order to solve the above-mentioned problems, the vehicular lamp of the present invention is one in which the upper and lower edges or the left and right edges of the peripheral edge of the reflector are connected in the direction of connecting the supported ends. Upper and lower side walls or left and right side walls project from the side edges of both side portions in a direction orthogonal to the rear side, and the upper and lower side walls or the left and right side walls and the lamp body are brought into contact with each other. The contacted portions are respectively formed.

[0019]

Therefore, according to the vehicular lamp of the present invention, the upper and lower side walls or the left and right side walls are provided rearward from the side edges of both sides in the direction orthogonal to the direction in which the reflector is supported by the lamp body and connecting the both ends. In addition, since the abutting portion or abutted portion is formed on the side wall or the lamp body so that the upper and lower side walls or the left and right side walls come into contact with the lamp body, the reflector should be supported in the cross direction with respect to the lamp body. As a result, the reflector does not vibrate in the lamp body, and the fluctuation of the light distribution can be prevented and the visibility can be improved.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the vehicular lamp of the present invention will be described below with reference to the embodiments shown in the accompanying drawings.

In the illustrated embodiment, the present invention is applied to a tail lamp for a two-wheeled vehicle in which a reflector is detachably configured so as to meet different standards for each destination.

Reference numeral 1 denotes a two-wheeled vehicle tail lamp, which is a lamp body 2 having a shallow, substantially paraboloidal inner surface which is in the shape of a horizontally long rectangle when viewed from the front and is open to the front.
, A reflector 5 having a front lens 3 covering the front opening of the lamp and a reflecting surface 4 in the shape of a paraboloid that is arranged in the lamp body 2, and a light emitting portion, that is, a filament in which the filament is arranged at a substantially focal position of the reflector 5. It consists of 6 mag.

In FIG. 1, the direction diagonally upward to the right is the front side, and the direction diagonally downward to the left is the rear side. Also, in the same drawing, the direction going diagonally downward right is the right side, and the direction going diagonally upward left is the left side. The same applies when the direction is indicated in the following description.

Reference numeral 7 denotes a reflecting portion of the lamp body 2 on which the inner surface of the paraboloid of revolution is formed. The inner surface of the reflecting portion 7 is a Fresnel-shaped reflecting surface 7a.

Reference numeral 8 denotes a bulb socket attached so as to project rearward at a position deviated slightly downward from the center of the reflection portion 7, and the bulb 6 is detachably attached to the bulb socket 8. It

Reference numeral 9 denotes an eaves wall which is provided on the upper edge of the reflecting portion 7 of the lamp body 2 so as to project forward. An inner surface 9a of the eaves wall 9 serves as a reflecting surface, and the front side of the eaves wall 9 is provided. The edges are aligned with the front end portions of the left and right side edges of the reflecting portion 7 in the front-back direction
The mountain shape is flat when viewed from above.

Reference numerals 10 and 10 denote side walls projecting obliquely rearward from the left and right side edges of the reflecting portion 7, respectively.
10 has a substantially triangular shape in which the upper edge is displaced downward as it goes rearward when viewed from the side.

Reference numeral 11 denotes a lower wall projecting rearward from the lower edge of the reflecting portion 7, and most of the rear edge of the lower wall 11 extends in the left-right direction, and both left and right ends are at both ends. The sidewalls 10 and 10 are inclined so as to be displaced rearward as they go.
It is continuous to the rear end.

Reference numeral 12 denotes a peripheral edge of the lamp body 2, that is, a front side edge of the eaves wall 9, upper side edges of the side walls 10 and 10, side walls 10 and 10.
The lens mounting groove is formed on the lower edge of the lower wall 11 and the rear edge of the lower wall 11 and is open toward the front.

Reference numerals 13 and 13 denote bosses which are provided on both right and left sides of the reflecting portion 7 so as to project toward the front at substantially the center in the vertical direction. The bosses 13 and 13 are formed with screw holes opened at their front ends. A screw for attaching the front lens 3 to the lamp body 2 is screwed into the screw hole.

.. are the bosses 13 and 13
Are ribs formed so as to connect the outer peripheral surface of the reflective surface 7a of the reflective portion 7 to each other, and the ribs 14, 14, ... Are formed so that the height from the reflective surface 7a is lower than that of the bosses 13, 13. Have been.

Reference numeral 15a denotes a joint between the reflection portion 7 and the eaves wall 9, which is a convex portion projecting forward and downward at the center in the left-right direction, and 15b in the left-right direction of the lower wall 11. It is a convex portion that is vertically provided at a position near the rear side edge in the center, and these two convex portions 15a and 15b are for restricting the position of the reflector 5 as described later.

Reference numeral 16 denotes a convex portion projecting from the bottom surface of the lower portion of the lens installation groove 12 in the center in the left-right direction, and serves to regulate the position of the front lens 3.

Reference numerals 17 and 17 denote bosses which are provided on the rear surface side of the reflecting portion 7 of the lamp body 2 so as to project rearward.
Mounting bolts 18 and 18 in the form of stat bolts are planted in 7 and 17, respectively, so as to project rearward.

The mounting bolts 18, 18 are arranged substantially horizontally when mounted on the vehicle body.

In the reflecting portion 7 of the lamp body 2, the filament (not shown) of the light bulb 6 is arranged slightly behind the focal point of the reflecting surface 7a, and the light flux emitted from the light bulb 6 is reflected by the reflecting surface 7a. It is designed to be reflected in the direction of diffusion.

When the reflector 5 of the lamp body 2 is used without using a reflector 5 described later, a tail lamp for a motorcycle for Europe having a relatively low central luminous intensity can be obtained.

When viewed from the front, the front lens 3 has a trapezoidal shape that is slightly elongated in the horizontal direction, and the front lens portion 19 and the front lens portion 1 have a rounded shape corresponding to the two upper corners.
9 is formed so as to project rearward from the upper edge of 9 and both left and right edges of the front lens portion 19 so as to project rearward, and is formed to be continuous with the upper surface 20 on the R surface. The side surface portions 21 and 21 and the lower surface portion 22 that is formed so as to project rearward from the lower edge of the front lens portion 19 and that is continuous with the side surface portions 21 and 21 on the R surface,
Except for a part of the lower surface part 22, other parts are integrally formed of red transparent synthetic resin.

A lens step is formed on the inner surface of the front lens portion 19, and the lens step controls the light flux collimated by the reflector 5 to obtain a desired light distribution, as will be described later. There is.

Reference numerals 23 and 23 denote bosses which are provided at both left and right ends of the front lens portion 19 and project rearward at approximately the center in the vertical direction. The bosses 23 and 23 are the reflection portions 7 of the lamp body 2. Are formed at positions corresponding to the bosses 17, 17 formed on the bosses 17, and the bosses 23, 23 are formed with screw insertion holes 23a, 23a.

.. are the bosses 23, 23
Are ribs formed so as to connect the outer peripheral surface of the front lens portion 19 to the inner surface of the front lens portion 19, and the ribs 24, 24, ... Have the same height from the inner surface of the front lens portion 19 as the bosses 23, 23. Is formed in.

The lower surface portion 22 is formed at an obtuse angle with respect to the front lens portion 19, and the upper surface portion 20 thereof is
The distance between the two is formed so as to increase toward the rear, so that the mold can be easily removed when the front lens 3 is integrally molded.

Further, the portions of the lower surface 22 excluding the left and right sides are made of colorless and transparent synthetic resin, and the license plate 25 located below the tail lamp 1 for a motorcycle is attached to the vehicle body. Function as the license plate lens 26.

The lens 26 for the license plate
Is integrally formed with the front lens portion 19, the upper surface portion 20, the side surface portions 21, 21 and the lower surface portion 22 of the front lens 3 by the two-color insert molding.

Reference numerals 26a, 26a, ... Are lens steps formed on the inner surface of the front side portion of the license plate lens 26 over the entire length in the left-right direction. The lens steps 26a, 26a ,. The direct light from is emitted toward the license plate 25.

Reference numeral 27 denotes a rear side edge of the lower surface portion 22 of the front lens 3, which is a rectangular notch formed in the center portion in the left-right direction, and is used when the front lens 3 is attached to the lamp body 2. The front lens 3 is positioned with respect to the lamp body 2 by engaging with a convex portion 16 formed in the lens installation groove 12 of the lamp body 2.

Reference numerals 28 and 28 denote rear side edges of the lower surface portion 22 of the front lens 3, which are notches for draining water formed at positions near both left and right end portions thereof.

The reflector 5 is open toward the front and has a reflecting surface 4 in the shape of a paraboloid of revolution, and the reflecting surface 4 is a substantially 4/4 upper part 4u and a 1/4 lower part. The lower portion 4d is divided into the portion 4d and is displaced to the rear so that a downward step is formed between the upper portion 4u and the lower portion 4d, and both portions 4u and 4d are common. Have a focus.

Further, since the lower portion 4d is displaced rearward from the upper portion 4u, the lower edge thereof is displaced rearward from the upper edge of the reflector 5, so that the notch 29 is formed. Has a shape as if formed.

The reflector 5 can be increased in rigidity by forming the downward step as described above.

Reference numeral 30 denotes a valve insertion hole formed at a position offset slightly downward from the center of the reflector 5, and the boundary line between the upper portion 4u and the lower portion 4d of the reflecting surface 4 is defined by the valve insertion hole 30. It is formed to extend diagonally downward in the center.

The opening surface of the reflecting surface 4 of the reflector 5 is formed to be smaller than the reflecting portion 7a of the lamp body 2 in the left-right direction, and the attachment pieces 31, 31 are outwardly and obliquely rearward from both left and right edges thereof. Is projected.

Numerals 32 and 32 denote seat portions formed at the center in the vertical direction at positions on the left and right side edges of the mounting pieces 31 and 31, respectively, and the seat portions 32 and 32 are vertical surfaces 32a facing forward and backward. , 32a and 32b, 32b, and have a circular shape when viewed from the front.

The thickness of the seat portions 32, 32 in the front-rear direction is the rib 14 and the front end surface of the boss 13 of the lamp body 2.
The boss insertion holes 32c, 32c, through which the tip of the boss 13 is inserted, are formed in the center of the seat 32.
When the front end of the boss 13 is inserted into the boss insertion hole 32c of the boss 13, the front end surface of the boss 13 comes out from the front surface of the seat 32 when the rear vertical surface 32b of the seat 32 comes into contact with the front ends of the ribs 14, 14. It is located in a position retracted backwards.

Reference numeral 33 denotes an upper surface wall projecting rearward from the upper surfaces of the reflecting surface 4 of the reflector 5 and the left and right mounting pieces 31, 31, and the rear side edge 33a of the upper surface wall 33 is the center in the left-right direction. When the reflector 5 is attached to the lamp body 2, the upper surface of the upper surface wall 33 is the reflecting surface 9 of the eaves wall 9 of the lamp body 2 when the reflector 5 is attached to the lamp body 2.
While being substantially in contact with a, the rear side edge 33a is close to the position where the upper side edge of the reflecting portion 7 and the rear side edge of the eaves wall 9 are in contact with each other.

Reference numeral 34 denotes a lower surface wall projecting rearward from the lower surface edges of the reflecting surface 4 and the left and right mounting pieces 31, 31 of the reflector 5, and the rear edge 34a of the lower surface wall 34 in the left-right direction. The central portion has a flat arc shape protruding rearward, and when the reflector 5 is attached to the lamp body 2, the left and right ends of the reflecting portion 7 of the lamp body 2 are substantially aligned with each other. , The lamp body 2 at the center
It is a portion of the lower wall 11 near the front edge and overlaps the lower surface of the central portion.

The reflector 5 has high rigidity due to the formation of the upper surface wall 33 and the lower surface wall 34,
As will be described later, when the lamp is supported in the lamp body 2, the mounting screw is prevented from being bent due to the strength of tightening.

Reference numerals 35 and 35 denote projections which are arranged in the center of the rear side edge 33a of the upper surface wall 33 in the left-right direction so as to project rearward, and between the two projections 35 and 35, a rear portion is provided. A concave portion 36 that is open toward is formed.

Reference numerals 37 and 37 denote protrusions which are arranged in the center of the rear side edge 34a of the lower surface wall 34 in the left-right direction so as to protrude rearward, and between the two protrusions 37 and 37, a rear portion is provided. A concave portion 38 that opens toward is formed.

Reference numeral 39 is a packing which is fitted in the lens installation groove 12 of the lamp body 2 when the front lens 3 is attached to the lamp body 2.

Then, the lamp body 2, the front lens 3 and the reflector 5 are assembled in the following manner.

First, with the back surface of the reflecting surface 4 of the reflector 5 facing the reflecting surface 7a of the reflecting portion 7 of the lamp body 2, the tip portions of the bosses 16, 16 of the reflecting portion 7 are attached to the reflector 5.
The boss insertion holes 32c and 32c of the seat portions 32 and 32 are inserted.

At this time, the upper surface of the upper wall 33 of the reflector 5 is in contact with a part of the reflecting surface 9a of the eaves wall 9 of the lamp body 2 and the recess 36 formed on the rear edge 33a of the upper wall 33 is formed. The protrusion 15a on the upper side of the lamp body 2 is abutted on the upper portion of the lamp body 2 in an externally fitted manner, and the rear side edge 34a of the lower surface wall 34 has a central portion near the front edge of the lower wall 11 of the lamp body 2. The concave portion 38 is in contact with the lower convex portion 15b of the lamp body 2 in an externally fitted state while being overlapped with the lower surface of the central portion.

As a result, the upper wall 33 of the reflector 5 serves as the abutting portion, the eave wall 9 of the lamp body 2 serves as the abutted portion, and both are abutted, and the lower surface wall 34 of the reflector 5 serves as the abutting portion. The lower wall 11 of the lamp body 2 is used as the contacted portion, and they are brought into contact with each other.

Further, when the reflector 5 is attached to the lamp body 2, the filament (not shown) of the light bulb 6 is located at the focal position of the reflecting surface 4 of the reflector 5, and the light emitted from the light bulb 6 is reflected by the reflecting surface 4. The light fluxes are substantially parallel.

When the reflector 5 is used, the tail lamp for a motorcycle for North America having a relatively high central luminous intensity can be obtained.

Next, the front lens 3 is attached to the respective parts (the upper surface part 2).
0, the side surface portions 21, 21 and the lower surface portion 22) and the packing 39 is inserted into the lens mounting groove 12 of the lamp body 2.
Fit through.

At this time, the boss 23 of the front lens portion 19,
The rear end surface 23 of the lamp body 2 comes close to or comes into contact with the front end surfaces of the bosses 13, 13 of the lamp body 2, and its ribs 24, 24 ,.
.. is the front surfaces 32a, 3 of the seat portions 32, 32 of the reflector 5
2a.

Then, in this state, the screws 40, 40 are inserted from the front of the front lens 3 into the screw insertion holes 23a, 23a, and these are screwed into the screw holes of the bosses 13, 13 of the lamp body 2 to form the lamp. The assembly of the body 2, the front lens 3, and the reflector 5 is completed, and the tail lamp 1 for a motorcycle is formed.

The tail lamp 1 for a motorcycle as described above is mounted by inserting the mounting bolts 18, 18 planted in the lamp body 2 into the rear portion of the vehicle body of the motorcycle and screwing a nut into the bolt. .

Since the seat portions 32, 32 located at the left and right ends of the reflector 5 are supported by the lamp body 2 and the front lens 3 in a sandwiched manner, the central longitudinal line of the vehicular lamp 1 is centered. Does not vibrate in the left and right rotation directions, and as described above, the top wall 33 and the eaves wall 9
Since the lower surface wall 34 and the lower wall 11 are brought into contact with each other, the lower wall 34 and the lower wall 11 do not vibrate in the vertical rotating direction with the line connecting the seat portions 32, 32 as the center line.

When the light bulb 6 is turned on, the light flux emitted through the front lens portion 19 of the front lens 3 to the front becomes red light, which functions as a tail lamp, and is formed on the lower surface portion 22. The light flux emitted downward through the license plate lens 26 is not colored and is applied to the license plate and functions as a license lamp.

At this time, the light beam emitted from the light bulb 6 and emitted obliquely downward and rearward illuminates the cutout portion 29 of the reflector 5, whereby this light beam is reflected forward. Therefore, there is almost no light beam that passes through the license plate lens 26 and is emitted forward, and the light beam functions as a light beam that illuminates the license plate.

In the above embodiment, the reflector 5 which is separate from the lamp body 2 is attached to form a tail lamp for a motorcycle for North America. However, the reflector 5 is removed and the reflecting surface 7a of the lamp body 2 is removed. By using it, it can be used as a motorcycle taillight for Europe.

[0075]

As is apparent from the above description, the vehicular lamp of the present invention is a vehicle in which the left and right ends or the upper and lower ends of the reflector are sandwiched between the lamp body and the front lens to support the reflector. A lighting fixture, which is one of the upper and lower side edges or the left and right side edges of the peripheral edge of the reflector, and the rear side of the upper and lower side walls or the left and right sides from the side edges of the both sides in the direction orthogonal to the direction connecting the supported both ends. It is characterized in that the side wall is provided so as to project, and the abutting portion or the abutted portion is formed on the side wall or the lamp body so that the upper and lower side walls or the left and right side walls come into contact with the lamp body.

Therefore, according to the vehicular lamp of the present invention, the upper and lower side walls or the left and right side walls are provided rearward from the side edges of both sides in the direction orthogonal to the direction in which the reflector is supported by the lamp body and connecting the both ends. In addition, since the abutting portion or abutted portion is formed on the side wall or the lamp body so that the upper and lower side walls or the left and right side walls come into contact with the lamp body, the reflector should be supported in the cross direction with respect to the lamp body. As a result, the reflector does not vibrate in the lamp body, and the fluctuation of the light distribution can be prevented and the visibility can be improved.

Although the present invention has been described in the above embodiment in which the present invention is applied to a tail lamp for a two-wheeled vehicle, the present invention is not limited to this and can be applied to general vehicular lamps.

In the above embodiment, the left and right end portions of the reflector are sandwiched between the lamp body and the front lens, and the upper and lower side walls are abutting portions. However, the present invention is not limited to this. May be supported by the lamp body and the front lens in a sandwiched manner, and contact portions may be formed on both left and right side walls.

Furthermore, the specific shapes and structures shown in the above embodiments are merely examples for implementing the vehicular lamp of the present invention, and the technical scope of the present invention is limited by these. Should not be interpreted.

[Brief description of drawings]

FIG. 1 to FIG. 7 show an example of an embodiment of a vehicular lamp of the present invention, and FIG. 1 is an exploded perspective view seen from a front lower diagonal direction.

FIG. 2 is an exploded perspective view seen from diagonally above and rearward.

FIG. 3 is an enlarged front view.

4 is a cross-sectional view taken along the line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV in FIG. 3;

6 is a cross-sectional view taken along line VI-VI in FIG.

7 is a cross-sectional view taken along the line VII-VII in FIG.

FIG. 8 is a horizontal cross-sectional view of a central portion showing an example of a conventional vehicular lamp.

[Explanation of symbols]

 1 Vehicle Lamp 2 Lamp Body 3 Front Lens 5 Reflector 9, 11 Contacted Part 33, 34 Upper and Lower Side Walls 33, 34 Contact Part

Claims (1)

(57) [Claims] 1. A vehicular lamp for supporting a reflector by sandwiching both left and right ends or upper and lower ends of a reflector between a lamp body and a front lens, the upper and lower edges or the left and right edges of the periphery of the reflector. The upper and lower sidewalls or the left and right sidewalls project rearward from the side edges of the both sides in the direction orthogonal to the direction in which the two supported ends are connected, and the upper and lower sidewalls or the left and right sidewalls contact the lamp body. A vehicle lamp characterized in that an abutting portion or an abutted portion is formed on the side wall or the lamp body so as to be in contact with each other.