JP2008226755A - Lamp for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compose a lamp for a vehicle so that the function property and design property of a turn lamp are improved when the turn lamp is integrated to a body to which a mirror is integrated. <P>SOLUTION: The turn lamp 2 is composed to radiate light in a long state by exposing one end part in a long direction of a light guide body 4a formed in a long solid shape to irradiation by a first light emitting diode 6 as a first light source. A first reflecting film 10 is coated on an outer periphery surface in the vicinity of a light inputting part 4e which is the one end part in the long direction of the light guide body 4a. A second reflecting film 11 is coated on a light outputting part 4g which is another end side end surface of the light guide body 4a. Thus, illuminance is improved by making loss of light small and reflecting light large. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to the technical field of vehicle lamps provided in vehicles such as automobiles.

  In general, in this kind of vehicle lamp, by attaching a turn lamp (direction indicator) integrally to a door mirror provided on the door of the vehicle (vehicle body) and lighting it together with a turn lamp provided independently on the front and rear of the vehicle, What is known to appeal more strongly to the people around. Among these, a configuration is proposed in which a turn lamp is configured to be lit using a light emitting diode.

In such a case, a light source is provided below the door mirror, and the light source irradiates one end in the longitudinal direction of a solid light guide (optical fiber) provided in a long shape below the door mirror. A proposal has been proposed in which light is emitted from the entire length of the light body to enhance the design and the visibility.
JP 2000-103287 A

  By the way, although the said conventional thing uses the light emitting diode (LED) excellent in durability as a light source which irradiates a light guide, the light emitting diode has the characteristic that directivity is strong. For this reason, when light is emitted (emitted) from a long length of a long light guide by a light emitting diode, it is necessary to accurately align the light emitting diode and the light guide. When the irradiation direction of the light guide is shifted, there is a problem that light is attenuated and does not reach the other end of the long light guide. In the conventional door mirror, the other end in the longitudinal direction of the light guide is located outward in the left-right direction of the vehicle body, and as described above, the irradiation direction of the light emitting diode is shifted and the other end of the light guide If the light is attenuated before reaching the side, there is a problem that the light emitted from the outside of the left and right direction of the vehicle body may be reduced and it may not be possible to secure sufficient illuminance to satisfy the legal standard as a turn lamp. Here, there is a problem to be solved by the present invention.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is for a vehicle in which a turn lamp is incorporated in a body in which a mirror is incorporated. In the lamp, the turn lamp includes a light guide formed in a long and solid shape, and a light source that enters light from one end in the length direction of the light guide, and is configured to emit light in a long shape. In doing so, the light guide is a vehicle lamp in which a light blocking means is provided on the outer peripheral surface of one end near the light source incident portion.
The invention according to claim 2 is the vehicle lamp according to claim 1, wherein the light blocking means is configured by applying a reflective film.
A third aspect of the invention is the vehicle lamp according to the first or second aspect, wherein the light blocking means is configured to be covered with the body and not visible from the outside.
The invention according to claim 4 is the vehicle lamp according to any one of claims 1 to 3, wherein the light guide is provided with light blocking means at the other end in the longitudinal direction.

According to the first aspect of the present invention, there is no loss of light in the vicinity of the light source incident portion, and uniform light can be emitted without attenuation of light from one end portion to the other end portion of the light guide. it can.
According to the invention of claim 2, the light guide can be prevented from being attenuated with a simple configuration.
By making the invention of claim 3, it is possible to prevent the surrounding people from feeling dazzling and to improve the design.
By setting it as invention of Claim 4, a loss can be reduced further and the illumination intensity of a light guide can be raised further.

Next, embodiments of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a door mirror provided in a door of a vehicle, and an opening is formed in a portion (not shown) facing the rear (vehicle rear) of the body 1a constituting the door mirror 1, and the opening In addition, a rear confirmation mirror (not shown) is fitted in such a manner that its position can be adjusted. A portion facing the front of the body 1a is formed in a shape that bulges forward, and a turn lamp 2 in which the present invention is implemented is integrally incorporated in a lower portion of the bulging portion.

In addition, although the left-right symmetrical thing is provided in the left-right door body of a vehicle, the door mirror 1 demonstrates the door mirror 1 provided in the vehicle right side shown in FIG. 1, and abbreviate | omits description of the left-side door mirror 1 here. To do.
The turn lamp 2 incorporated in the door mirror 1 is set so as to be incorporated into the body 1a as one assembly at a lower portion of the front bulge portion of the body 1a. The turn lamp 2 includes a base housing 3 and an inner housing 4 that are housed inside the body 1a, and a lens portion 5 that covers the front portion of the inner housing 4 and is exposed to the outside along with the outer peripheral surface of the body 1a. Configured.

The base housing 3 is integrally formed of a non-translucent resin material, and is formed in an elongated body in the left-right direction so as to be installed in a lower part of the door mirror body 1a. The right end portion is formed in a shape that bends backward. The base housing 3 is formed with a recessed portion 3a that opens from the front portion to the right portion, and is set so that the recessed portion 3a is closed by incorporating the inner housing 4 from the front of the recessed portion 3a. ing.
In addition, the bottom piece 3b which comprises the recessed part 3a of the base housing 3 is formed in flat form, and the right end part bends backward by forming the 1st, 2nd level | step-difference part 3c, 3d in a right end part. Is set to

  On the other hand, the inner housing 4 is integrally molded using a translucent resin material, and has a long left and right curved shape. The inner housing 4 is formed with a columnar light guide 4a facing the portion where the front of the base housing 3 opens and extending rightward from the left end side, and the upper and lower edges of the light guide 4a. A pair of upper and lower flange bodies 4b, 4c are integrally extended from the portion in the vertical direction. Furthermore, an inner lens body 4d extends from the right end edge of the light guide 4a and the flange bodies 4b and 4c at the right end portion of the inner housing 4 and located outwardly in the left-right direction of the vehicle body. Although formed integrally, the inner lens body 4d is formed to face a portion where the right portion of the base housing 3 opens.

Reference numerals 6, 7, and 8 denote first, second, and third light emitting diodes that serve as the light source of the turn lamp 2, and these light emitting diodes 6, 7, and 8 are all general-purpose ones. ing. The first, second, and third light emitting diodes 6, 7, and 8 are set so as to be fixedly supported by a support 3e that is erected on the base housing bottom piece 3b. At this time, the first light emitting diode 6 is one end in the longitudinal direction of the light guide 4a of the inner housing 4 and is opposed to the one end 4e of the inner housing 4 on the side where the inner lens body 4d is not formed. The light guide 4a is set to emit long light when the first light emitting diode 6 is turned on. The light guide 4a is fixedly supported by the support 3e disposed on one end of the bottom piece 3b.
The one end portion 4e of the light guide 4a is a light incident portion of the first light emitting diode 6, and the light emitting diode 6 is formed by making the one end portion (hereinafter referred to as the light incident portion) 4e into a hemispherical shape. Is set to be guided to the light guide 4a in a scattered state.

On the other hand, the second and third light emitting diodes 7 and 8 are ends opposite to the first light emitting diode 6 in the longitudinal direction, and the inner lens body 4d of the inner housing 4 which is an outer portion in the left-right direction of the vehicle body. It is provided to irradiate. The second light emitting diode 7 is supported on the support 3e disposed on the inclined piece 3f between the first and second stepped portions 3c and 3d, and the third light emitting diode 8 is supported on the second stepped portion 3d. Each of the first and second light emitting diodes 7 and 8 is lit and light is emitted from the inner lens body 4d portion located at the outer side in the left-right direction of the vehicle body. It is set so that the illuminance that satisfies the standard is reliably maintained.
Reference numeral 9 denotes a substrate 9 to which the light emitting diodes 6, 7, and 8 are electrically connected. The substrate 9 is a pair of long-direction projections that are formed to protrude from the inner housing 4 toward the base housing 3. It is set so as to be integrally supported by the locking claw 4 f and accommodated between the inner housing 4 and the base housing 3.

  And in this thing, the surface by the side of the base housing 3 used as the inner surface of the inner housing 4 is formed in the non-smooth surface, for example by giving a crease process etc. As a result, light is diffusely reflected by the non-smooth surface in the light guide 4a and the inner lens body 4d irradiated with the first, second, and third light emitting diodes 6, 7, and 8, and the light guide 4a The light that has entered the inner lens body 4d is emitted in a diffusely reflected state, whereby the visibility as the turn lamp 2 can be enhanced. Furthermore, in the upper and lower flange bodies 4b and 4c, the non-smooth surface functions as a light blocking means, so that radiation from the light guide 4a can be performed efficiently, and the rear of the inner housing 4 from the lens 5 side. Thus, the substrate 9 fixedly supported behind the inner housing 4 is not visible from the outside, and is configured to be a turn lamp 2 with high design.

Further, in this structure, the light guide 4a of the inner housing 4 is a whole area of the outer peripheral surface in the vicinity of the light incident part 4e (excluding the light incident part 4e that is one end surface in the longitudinal direction where the first light emitting diode 6 enters light). The first reflective film 10 corresponding to the light blocking means of the present invention is applied to the one outer peripheral surface. In the present embodiment, the first reflective film 10 is applied by sputtering, and a configuration in which a reflective tape is wound around the outer peripheral surface in the vicinity of the light incident portion 4e can also be adopted.
In this way, by providing the first reflective film 10 on the outer peripheral surface in the vicinity of the light incident portion 4e of the light guide 4a, a hemispherical shape of the light incident from the first light emitting diode 6 as shown in FIG. The light incident on the light incident portion 4e in a scattered state and radiated toward the first reflective film 10 is reflected toward the other end of the light guide 4a. The light entering portion 4e is configured so as not to waste light scattered. In particular, when the light reflected by the first reflective film 10 is irradiated toward the non-smooth surface of the inner surface of the light guide 4a, the illuminance of the light guide 4a is further increased by irregularly reflecting on the non-smooth surface. Therefore, the loss of light in the vicinity of the light incident part 4e of the light guide 4a is eliminated, the amount of light emitted from the entire length of the light guide 4a (irradiation amount) is increased, and uniformized, It is comprised so that it may become the turn lamp 2 with the high design property which does not attenuate at the other end side.

  Further, in the door mirror 1 of the present embodiment, the body 1a covers the vicinity of the light incident portion 4e of the light guide 4a, that is, the portion where the first light emitting diode 6 is disposed and the portion where the first reflective film 10 is applied. Thereby, it is comprised so that these parts cannot be visually observed from the exterior of the door mirror 1. FIG. Thus, the light incident part 4e of the light guide 4a is covered with the body 1a so that the first light emitting diode 6 is not exposed, and there is no problem that makes the surrounding people feel dazzling. ing. Further, since the body 1a also covers the portion where the first reflective film 10 is applied, the portion of the light guide 4a that is not emitted is not exposed to the outside, and the design is further enhanced.

Furthermore, the turn lamp 2 of the present embodiment is the other end side end face of the light guide 4c, and the light exit portion 4g serving as the exit of the light incident from the light entrance portion 4e is adjacent to the inner lens body 4d. The lower part of the adjacent part is formed on a flat end face, and a second reflective film 11 serving as a light blocking means is applied to the light exit part 4g. In the present embodiment, the second reflective film 11 is applied by sputtering in the same manner as the first reflective film 10. And by providing the 2nd reflective film 11 in the light exit part 4g of the light guide 4a, as shown in FIG. 4, the light which injected from the light-incidence part 4e of the light guide 4a moves to the inner lens body 4d side. The light can be reflected toward one end of the light guide 4a without leaking light. As a result, a problem that the illuminance of the light guide 4a is reduced is prevented, and the illuminance of the elongated light emitting portion of the light guide 4a is increased, so that the learn lamp 2 having high visibility can be obtained. It is configured.
Incidentally, in the turn lamp 2 of the present embodiment, an inner lens body 4d is formed at a portion that is outward in the left-right direction of the vehicle body, and the inner lens body 4d is formed by the second and third light emitting diodes 7 and 8. Irradiation is sufficient to ensure sufficient illuminance as a legal standard. For this reason, it is not necessary to radiate the light guided from the light guide 4a to the inner lens body 4d side, so that the turn lamp 2 can be lit with high visibility in a portion from the front to the outside in the left-right direction. It is configured so that both functionality and design are excellent.

  Here, the inner housing is so-called two-color molding, the light guide is molded from a translucent resin material, the flange body is molded from a non-translucent resin material, and the rear surfaces of the light guide and the inner lens body are not molded. It is good also as a structure formed in a smooth surface, and also in this case, the effect that diffuse reflection in a light guide is made, and the effect of covering a board | substrate with a flange body and making it invisible from the outside can be acquired. Further, in this case, by forming the outer peripheral surface in the vicinity of the light incident portion of the light guide and the light exit portion with a non-translucent resin material, the portion can be used as a light blocking means. By doing so, when the inner housing is two-color molded without providing a special process, the light guide can be provided with a light blocking means.

  In the present embodiment configured as described, the turn lamp 2 incorporated in the door mirror 1 emits light in the left-right direction from a light guide 4a integrally formed with the inner housing 4 at a front portion of the vehicle. In addition, the light from the second and third light emitting diodes 7 and 8 is emitted from the inner lens body 4d on the outer side in the left-right direction of the vehicle body, and the visibility from the front of the vehicle and the outer side in the left-right direction is improved The turn lamp 2 is excellent in design. In this case, the first reflective film 10 as a light blocking means is applied to the outer peripheral surface in the vicinity of the light incident part 4e (one side in the left-right direction) where the first light emitting diode 6 of the light guide 4a enters. Therefore, light is not emitted and lost in the vicinity of the light incident part 4e of the light guide 4a, and the light that irradiates the vicinity of the light incident part 4e is reflected by the first reflective film 10. The light can be guided to the other end side of the long light emission, and is attenuated until the light of the first light emitting diode 6 reaches the light exit part 4g (the other end side part) of the light guide 4a, and the other end side Thus, it is possible to prevent a problem that the illuminance decreases so as to emit uniform light.

  Moreover, in the case where the present invention is implemented, since the first reflective film 10 is applied as the light blocking means, the light guide 4a can be prevented from being attenuated with a simple configuration.

  Further, in this case, the portion where the light-emitting diode 6 is disposed and the portion near the light-emitting diode 6 light entrance 4e of the light guide 4a and where the first reflecting surface 10 is provided are the door mirror 1. Therefore, the turn lamp 2 can be made excellent in functionality and design without causing surrounding people to feel dazzling.

  In this case, a second reflective film 11 as a light blocking means is applied to a light exit portion 4g of the light guide 4a and a portion adjacent to the inner lens body 4d. As a result, the light to be guided from the light guide 4a to the inner lens body 4d side can be returned to the light guide 4a side, the loss of light from the light emitting diode 6 is reduced, and the light guide 4a. The illuminance can be further increased.

It is a whole perspective view of a door mirror. It is a perspective view explaining the state which removed the lens part from the turn lamp. It is a cross-sectional view of a door mirror. It is a cross-sectional view explaining the reflective state of the light in a turn lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door mirror 1a Body 2 Turn lamp 3 Base housing 4 Inner housing 4a Light guide 4b Flange body 4d Frame part 4g Locking claw 5 Lens part 6 1st light emitting diode 7 2nd light emitting diode 10 1st reflection film 11 2nd reflection film

Claims (4)

  In a vehicle lamp in which a turn lamp is incorporated in a body in which a mirror is incorporated, the turn lamp enters a light guide body formed in a long solid shape and one end portion in the longitudinal direction of the light guide body. When the light guide is configured to emit light in a long shape, the light guide is a vehicle lamp in which a light blocking means is provided on the outer peripheral surface of one end near the light source incident portion.   The vehicle lamp according to claim 1, wherein the light blocking means is configured by applying a reflective film.   The vehicle lamp according to claim 1, wherein the light blocking means is configured to be covered with a body so that the light blocking means cannot be seen from the outside.   The vehicular lamp according to any one of claims 1 to 3, wherein the light guide is provided with a light blocking means at the other end in the longitudinal direction.

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