JPH0672108U - Vehicle lighting - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure and to easily install the light shielding sheet, improve the assembly workability and reduce the cost. [Structure] Light-shielding sheet 16 having light-transmitting portion and light-shielding portion
Is in close contact with the inner surface of the lens 4B, and the light shielding sheet 16 is pressed and fixed to the inner surface of the lens by the shade 17 that shields between the lamp chambers.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that reduces external light entering the lamp from the outside.

[0002]

[Prior art]

 In a vehicle lighting device such as an automobile, when external light enters the lighting device from the outside, it is reflected inside the lighting device and emitted to the outside, which may give the illusion that the lighting device is lit. . Therefore, conventionally, various proposals have been made as a method for solving such a problem. As one of the methods, the lamp disclosed in Japanese Patent Application Laid-Open No. 58-108650 is known. In this lamp, a light transmitting member is arranged between a light source and a front lens, a baffle that blocks light but has a plurality of light transmitting regions is provided on one surface of the light transmitting member, and the baffle is provided on the other surface. The lens surface is formed by a convex lens that focuses the light from the light source emitted from the front side, and the lens surface is formed by a small concave lens between the light transmission areas. All of the reflected light can be focused by a convex lens and passed through the baffle from the light transmitting area, while the light transmitting area is so small that most of the external light can be blocked by the baffle and reflected by the reflector. This has the advantage that the amount of external light that is re-emitted can be significantly reduced.

[0003]

[Problems to be solved by the device]

 However, in the conventional lamp as described above, the baffle and the light transmitting member are required, and since the lens surfaces must be formed on both sides of the light transmitting member, the formation of the light transmitting member is troublesome. Moreover, there is a problem that the number of parts is increased and the manufacturing cost is significantly increased because a member for holding and fixing the light transmitting member is required.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to simplify the structure, to easily attach the light shielding sheet, and to improve the assembling workability. At the same time, it is to provide a vehicular lamp designed to reduce costs.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises a light-shielding sheet having a light-transmitting portion and a light-shielding portion and arranged along the inner surface of the lens. It is pressed and fixed to the inner surface of the lens by a shield member that shields the space between the chambers.

[0006]

[Action]

 In the present invention, the light blocking portion of the light blocking sheet blocks outside light from entering the lamp chamber. The light transmitting portion of the light shielding sheet transmits the light from the light source. The shield member that shields the lamp chambers also serves as a sheet fixing member that presses and fixes the light shielding sheet to the inner surface of the lens.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. 1 is a sectional view taken along the line I--I of FIG. 2 showing an embodiment of a vehicle lighting device according to the present invention, FIG. 2 is a front view of the same lighting device, and FIG. 3 is an enlarged sectional view taken along the line III--III of FIG. . In these drawings, the present embodiment shows an example in which a plurality of types of lamps are incorporated into one lamp body to be applied to a rear combination lamp that is attached to a corner portion at the rear part of the vehicle body. Reference numeral 1 is a vehicle body, 2 is a combination lamp attached to a rear corner of the vehicle body 1, and the combination lamp 2 is a lamp fixture which is positioned and fixed to the vehicle body 1 by a plurality of fasteners and a stud pin (neither is shown). A body 3 and a front lens 4 that hermetically covers the front opening of the lamp body 3 are provided.

The lamp body 3 is integrally formed by injection molding of ABS resin or the like, and the inside thereof is divided into three lamp chambers 8A, 8B, 8C by partition walls 5, 6, 7 and a central lamp chamber. 8A forms the light room of the tail and stop lamp 9, the left light room 8B forms the light room of the back lamp 10, and the right light room 8C forms the light room of the turn signal lamp 11. The lamp chamber 8A is formed to be long in the left-right direction and has two tail-and-stop lamp bulbs 12, an inner lens 13 and a retroreflector 14 arranged therein, and a lamp chamber 8B has a back lamp bulb 15, which will be described later. A light shielding sheet 16 and a shade 17 (shield member) are provided, and a lamp 18B for a turn signal lamp, an inner lens 19, and a reflector 20 are provided in the lamp chamber 8C, respectively. The inner surface of the lamp body 3 has a reflective surface formed by vapor deposition of aluminum or the like, and two parabolic reflection surfaces 21A and 21B are formed on the inner surface of the central portion of the lamp body 3 forming the lamp chamber 8A. The tail end stop lamp bulbs 12 are disposed at the respective focal positions P. The inner surface at the left end of the lamp body 3 forming the left lamp chamber 8B forms a reflecting surface 22 which is curved in a parabolic shape as a whole. A reflecting surface 24 curved in a parabolic shape corresponding to the reflector 20 is formed on the inner surface on the right side of the lamp body 3 forming the right lamp chamber 8C, and the right side of the lamp body 3 following the reflecting surface 24. The end portion wraps around the side surface 1A of the vehicle body 1 to form a wrap-around portion 3A.

The front lens 4 that covers the front opening of the lamp body 3 includes a first lens 4A that covers the central lamp chamber 8A, a second lens 4B that covers the left lamp chamber 8B, and a right lens chamber 8C. A frame-shaped seal leg 26, which is formed integrally with the outer periphery of the rear surface and includes three lenses 4C, is formed in the outer peripheral surface of the front surface of the lamp body 3, and has a U-shape that opens forward. It is inserted into the seal groove 27 and fixed by an adhesive 28, and is mechanically fixed and fixed to the lamp body 3 by a lance connection, a set screw and the like (not shown). The first lens 4A is colored red, the second lens 4B is colored white, and the third lens 4C is colored amber. The front lens 4 having such a configuration can be simultaneously molded by one mold because the colors of the first, second and third lenses 4A, 4B and 4C are different from each other. Instead, it is manufactured by a conventionally known multicolor molding method. In that case, for example, first the first lens 4A is injection-molded by the first lens molding die, then the first lens 4A is loaded into the second lens molding die, and the second lens 4B is replaced by the first lens 4A. The first and second lenses 4A and 4B, which are integrally joined to an opening provided near one end of the first lens, are then loaded into a third lens molding die to mount the third lens 4C. It is integrally joined to the other end of the first lens 4A. In addition, on the back surface of the front lens 4 manufactured in this way, a joint projection 29 is integrally provided so as to increase the joint strength between the lenses, and the joint projection 29 is formed on the partition wall 6 as described above. , 7 and the shade 17 are respectively inserted into U-shaped grooves 30 and 31 provided on the tip end surfaces of the shade 17 via packings (not shown) made of polyurethane or the like, and fixed by an adhesive. The third lens 4C is formed in an L shape so as to match the shape of the corner portion 3A of the lamp body 3 from the viewpoint of enhancing the design effect, and a part of the third lens 4C extends from the rear surface of the vehicle body 1 to the side surface 1A. And form a wraparound lens. A smoke lens 32 (FIG. 1) colored in a desired color and having a transmittance of about 10% is disposed around the front lens 4.

The inner lens 13 disposed in the central lamp chamber 8A is made of a white transparent lens, a cylindrical lens 33 is integrally formed on the back surface, and the retroreflector 14 is fitted in the center. The first lens 4A is provided with an opening 34, which is located in the rear of the first lens 4A and is substantially parallel to the first lens 4A so as to face the first lens 4A. Both ends are fixed to the side surfaces of the partition wall 6 and the shade 17 by ultrasonic welding or the like. ing.

The retroreflector 14 is formed with a retroreflective element 14a (see FIG. 4) consisting of a cubic corner-angled projection having three surfaces orthogonal to the back surface thereof, so that the light 35 from the outside is directed to the incident direction. It is retroreflected in the same direction and is integrally formed with a frame-shaped side wall portion 14b by being formed in a dish shape. The frame-shaped side wall portion 14b is fitted into the opening 34 of the inner lens 13 and Is in close contact with the inner surface of the first lens 4A. Further, an engaging projection 36 is provided on the outer surface of the frame-shaped side wall portion 14b, and the engaging projection 36 is fitted and locked in an engaging hole 37 formed in the wall surface of the opening 31. Therefore, the retroreflector 14 is fixed to the inner lens 13. A light-shielding plate 38 is arranged at the rear end opening of the retroreflector 14 with its peripheral edge being fixed to the front end surface of the frame-shaped side wall portion 14b, so that the light emitted from the tail-and-stop lamp bulb 12 is blocked. Part of the light is prevented from passing through the retroreflector 14 and being emitted to the outside. When the retroreflector 14 is fitted into the opening 31 of the inner lens 13 and fixed by the engagement between the engaging projection 36 and the engaging hole 37 in this manner, the mounting work is simple and the fixing by conventional ultrasonic welding is performed. Compared with the method, there are no burrs and welding defects, and the appearance is good.

In FIGS. 3, 5 and 6, the light-shielding sheet 16 has a transparent sheet 40 made of polycarbonate or the like having a thickness of about 0.5 mm as a base material, and the front surface (or the back surface) of the transparent sheet 40 is hot. The light shielding portion 41 is formed by printing with a stamp or the like. The transparent sheet 40 is formed in a shape substantially the same as the inner surface shape of the second lens 4B, and a portion where the light shielding portion 41 is not provided forms a light transmitting portion 42. The light-shielding portion 41 is composed of a plurality of elongated strips that extend over the entire width of the transparent sheet 40 and are arranged in parallel in the height direction at predetermined intervals. The width W2 of 42 is about 3.5 mm. The light-shielding portion 41 is composed of first to third light-shielding layers 41a, 41b, and 41c that are laminated, and the first light-shielding layer 41a, which is the lowermost layer, is formed of the same color as the vehicle body, for example, a red paint layer. The second light-shielding layer 41b, which is an intermediate layer, is formed of, for example, a gray paint layer, and the third light-shielding layer 41c, which is the uppermost layer, is formed of a vehicle-body-colored paint layer. When the light-shielding portion 41 has a three-layer structure as described above, the light-shielding effect is excellent, and the amount of red light emitted from the back lamp bulb 15 and transmitted through the light-shielding sheet is reduced as compared with the light-shielding portion formed of one paint layer. There is an advantage that can be made. Further, since the first to third light shielding layers 41a to 41c are laminated only on the front surface side of the transparent sheet 40, it is possible to prevent printing deviation of these paint layers. The light-shielding sheet 16 having such a structure has a peripheral edge portion held by the shade 17 and is in close contact with the inner surface of the second lens 4B. In this case, since the light-shielding sheet 16 is formed in a flat plate shape, it is expected that the light-shielding sheet 16 will fall off when assembled to the lens, but the second lens 4B is generally curved so as to be convex outward rather than flat. Therefore, when the light shielding sheet 16 is fitted onto the inner surface of the second lens 4B, the light is curved along the inner surface of the lens and the peripheral edge of the lens is returned to a flat plate shape. Since it is pressed against the side surface of the joining protrusion 29, the second protrusion 4B does not fall off from the second lens 4B. Then, the light shielding sheet 16 is brought into close contact with the inner surface of the second lens 4B, and then the peripheral edge portion thereof is pressed and fixed to the second lens 4B by the shade 17. Therefore, the work of assembling the light shielding sheet 16 is simple and easy.

The shade 17 has a front opening formed in a frame-like body smaller than the rear opening and is arranged in the lamp chamber 8B. The lamp chamber 8A and the lamp chamber 8B are separated from each other by a back lamp. It prevents light from the bulb 15 for entering the lamp chamber 8A and light emitted from the tail and stop lamp bulb 12 from entering the lamp chamber 8B. The U-shaped groove 31 into which the joining projection 29 (FIG. 3) of the first lens 4A and the second lens 4B is inserted is formed on the front surface of the shade 17, and the rear end is formed in the lamp chamber 8B. Is fixed to the inner surface of the lamp body 3 that forms the above by ultrasonic welding or the like. In addition, as shown in FIGS. 5 and 6, a plurality of protrusions 48 are provided in the height direction on the front end surface of the inner side wall 47a of the inner and outer side walls 47a and 47b which forms the U-shaped groove 31 and which is opposed to the left and right. The protrusions 48 press the rear surfaces of the transparent sheet 40 at both left and right ends against the inner surface of the second lens 4B. Therefore, the shade 17 separates the lamp chambers 8A and 8B, and has an original shielding function of blocking the light of the tail and stop lamp bulb 12 and the back lamp bulb 15, and a sheet for fixing the light shielding sheet 16 to the second lens 4B. Has a fixed function.

In FIG. 1, the inner lens 19 arranged in the right lamp chamber 8C forms a free-form curved inner lens by being curved so as to wrap around the side surface 1A of the vehicle body. As shown in FIG. 7, a serrated lens step 50 is formed. The lens step 50 is formed in a vertical direction, and the left and right slopes intersect at a substantially right angle, and refracts the light emitted from the turn signal lamp bulb 18 toward the front of the lamp and the side of the vehicle body.

The reflector 20 disposed in the right lamp chamber 8C has a front surface forming a reflecting surface curved in a parabolic shape, and is disposed behind the turn signal lamp bulb 18. In this case, the optical axis 52 of the turn signal lamp 11 is substantially parallel to the vehicle width direction center line, and the optical axis 53 of the reflector 20 is aligned with the normal lamp optical axis 52. In that case, the solid line 54 in FIG. As shown by, the light distribution pattern is shifted from the lamp optical axis 52 to the side of the vehicle body. Therefore, in the present embodiment, the reflector 20 is arranged so that its optical axis 53 faces the center side of the vehicle body with a predetermined angle θ (θ = about 5 °) with respect to the lamp optical axis 52, as shown in FIG. By doing so, the deviation of the light distribution pattern is corrected. When the reflector 20 is tilted in this way, the center of the light distribution pattern can be aligned with the lamp optical axis 52 as shown by the solid line 55 in FIG. 8, and the light distribution characteristics of the wraparound portion can be improved.

Further, in the present embodiment, the distance d from the turn signal lamp bulb 18 to the reflector 20 is set to be larger than the focal length F of the reflector 20, that is to say, for the turn signal lamp in front of the focal position Q of the reflector 20. A valve 18 is arranged. By doing so, the reflected light emitted from the turn signal lamp bulb 18 and reflected by the reflector 20 does not become parallel light parallel to the lamp optical axis 52, which has the advantage of increasing the amount of light emitted to the front of the lamp. Have. When the focal length F is 20 mm and the distance d is 30 mm, the amount of light emitted forward is increased by 20%, and the light distribution characteristics in front of the lamp can be improved.

FIG. 9 is a cross-sectional view showing the connection structure between the cord assembly 70 of the combination lamp 2 and the vehicle body side connector 71 provided on the vehicle body 1. The vehicle body side connector 71 is fitted and fixed in a connector mounting hole 72 provided at an appropriate location of the vehicle body 1, one end of the cord assembly 70 is connected to this connector 71, and the other end is arranged on the rear surface of the lamp body 3. It is connected to the provided lamp side connector 73 (FIG. 1). At one end of the cord assembly 70, an L-shaped bent resin retainer 74 is provided. The retainer 74 fixes the bent shape of the cord assembly 70, one end of which is connected and fixed to the cord assembly 70 by a tape 75, and the other end of which is inserted into the vehicle body-side connector 71. When one end of the cord assembly 70 is bent by the retainer 74 and connected to the vehicle body side connector 71 as described above, even if the gap between the vehicle body 1 and the lamp body 3 is small, the cord assembly 70 can be securely fitted into this gap. It is possible to facilitate the connection work of the cord assembly 70 without bouncing due to the restoring force due to the bending of the cord assembly 70 at the time of assembling the lamp and pressing the lamp body 3 and the trim cover.

In FIGS. 2 and 10, a garnish 77 is arranged in close contact with the vehicle body center side end of the combination lamp 2. The combination lamp 2 and the garnish 77 are joined by being positioned in the height and the front-rear direction by an appropriate positioning means 78. The positioning means 78 includes, for example, an engagement hole portion 79 provided on the combination lamp 2 side and an engagement protrusion 80 provided on the garnish 77 side. By fitting from above, the height and front surface of the combination lamp 3 and the garnish 77 can be matched.

[0019]

[Effect of device]

 As described above, in the vehicular lamp according to the present invention, the light shielding sheet having the light transmitting portion and the light shielding portion is brought into close contact with the inner surface of the lens, and the light shielding sheet is pressed and fixed to the inner surface of the lens by the shield member that shields between the lamp chambers. Since it is configured as described above, the work of assembling the light shielding sheet is simple and easy.Since the shield member also serves as the shade and the sheet fixing member, a special fixing member for the seat is not required, and the structure is simple. The number of parts and cost can be reduced. In addition, since the surface of the light-shielding part forms a colored layer, if the same color as the vehicle body color is used, the sense of unity between the vehicle body and the lamp is increased, and the appearance of the vehicle is improved. Is.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a vehicular lamp according to the present invention.
2 is a cross-sectional view taken along line I-I of FIG.

FIG. 2 is a front view of the lamp.

FIG. 3 is an enlarged cross-sectional view taken along line III-III of FIG.

FIG. 4 is an enlarged cross-sectional view of part A in FIG.

FIG. 5 is a front view of a light shielding sheet.

FIG. 6 is an enlarged cross-sectional view of a main part of the same sheet.

FIG. 7 is a cross-sectional view of a main part of the lamp.

FIG. 8 is a diagram showing a light distribution pattern.

FIG. 9 is a cross-sectional view showing a connection structure of the cord assembly.

FIG. 10 is a side view showing a connection structure of a combination lamp and a garnish.

[Explanation of symbols]

 1 vehicle body 2 combination lamp 3 lamp body 4 front lens 8A, 8B, 8C light chamber 16 light-shielding sheet 17 shade 40 transparent sheet 41 light-shielding portion 42 light-transmitting portion

Claims (1)

[Scope of utility model registration request] 1. A shield comprising a light-transmitting portion and a light-shielding portion, the light-shielding sheet being provided along an inner surface of the lens, wherein the light-shielding portion has a colored layer formed on the surface of the light-shielding portion and shields between the lamp chambers. A vehicle lamp characterized in that it is pressed and fixed to the inner surface of the lens by a member.