JP2012021285A - Lighting fixture for automobile door handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent scratches and stains from sticking to a light emitting part and to facilitate the visual recognition of a door handle at night.SOLUTION: A lighting fixture 1 provided in a long-length door handle 20 on the outer side of a door 10 of an automobile includes an LED 2, and a light guide body 4 which is provided inside the door handle 20, has a first light emitting part 43a and a second light emitting part 43b exposed on the outer side of the door 10, and makes light from the LED 2 be emitted from the first light emitting part 43a and the second light emitting part 43b. The first light emitting part 43a and the second light emitting part 43b are disposed at two parts holding a grip part 20a of the door handle 20 therebetween along the long-length direction of the door handle 20.

Description

  The present invention relates to an automotive door handle lamp.

  2. Description of the Related Art Conventionally, there is known a vehicle (automobile) in which a lamp is provided around the door handle outside the door for the purpose of improving the visibility of the door handle at night.

  As this type of lamp, for example, in Patent Document 1, light emitted from a light source of an illuminating lamp provided below a door handle is guided by an optical fiber, so that light emission provided over the entire width of the front end of the door handle. The part is made to emit light.

Japanese Patent No. 3193587

  However, in the lamp described in Patent Document 1, since the light emitting unit is provided at the front end of the door handle, the user touches the light emitting unit when the user grips the door handle. It is easy to stick.

  The subject of this invention is providing the lamp | ramp for motor vehicle door handles which can recognize a door handle easily at night while preventing the damage | wound and adhesion of a light emitting part.

In order to solve the above-mentioned problem, the invention according to claim 1 is a vehicle door handle lamp provided on a long door handle outside the door of the vehicle.
A light source;
A light guide that is provided inside the door handle and has a light emitting portion exposed to the outside of the door, and that emits light from the light source from the light emitting portion,
With
The light emitting portions are arranged at two locations along the longitudinal direction of the door handle so as to sandwich the grip portion of the door handle.

The invention according to claim 2 is the lamp for the automobile door handle according to claim 1,
The two light emitting units are composed of a first light emitting unit and a second light emitting unit that is shorter in a direction perpendicular to the longitudinal direction than the first light emitting unit,
The light guide is
The first light emitting unit and the second light emitting unit are formed long along the long direction so that they are disposed at both ends,
A light incident portion for allowing light from the light source to enter the light guide is disposed at a position closer to the first light emitting portion than the center in the longitudinal direction.

The invention according to claim 3 is the vehicle door handle lamp according to claim 1 or 2,
The light guide has a reflecting surface that reflects light traveling through the light guide to the light emitting unit, and a step surface orthogonal to the thickness direction of the light guide. It is characterized by being formed in a staircase shape.

  According to the present invention, since the light emitting part of the light guide is disposed at two positions along the longitudinal direction of the door handle so as to sandwich the grip part of the door handle, the light is emitted when the user grips the grip part. Do not touch the part. Moreover, the grip part of the door handle can be easily visually recognized even at night as a part sandwiched between the two light emitting parts. Therefore, it is possible to prevent the light emitting portion from being scratched or adhered to the light emitting portion due to the user's grip and to easily visually recognize the door handle at night.

It is a perspective view of a door provided with the lamp for motor vehicle door handles in an embodiment. It is a disassembled perspective view of the door of FIG. It is a front view of the light guide with which the lamp for motor vehicle door handles is provided. It is a rear view of the light guide with which the lamp for motor vehicle door handles is provided. It is sectional drawing in the II-II line | wire of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a door 10 including a vehicle door handle lamp (hereinafter simply referred to as a lamp) 1 according to the present embodiment, and FIG. 2 is an exploded perspective view of the door 10. 1 and 2, only the door handle peripheral portion of the door 10 is illustrated.

  As shown in these drawings, the door 10 is a side door of an automobile and includes a door panel 11 exposed to the outside of the vehicle. The door panel 11 is formed with a substantially elliptical opening 11a that is long in the vehicle front-rear direction (hereinafter referred to as the Y direction). A door handle 20 that is long in the Y direction is formed in the opening 11a. It fits so that it may be exposed to the outer side of the door 10 in the state which opened the clearance gap up and down.

  The door handle 20 has a gripping portion 20a that is gripped when the user opens the door 10 at the approximate center in the Y direction. The door handle 20 includes a lamp 1 inside, and is fixed to the door 10 in a state where the lamp 1 is sandwiched between a front cover 21 and a rear cover 22 in the left-right direction of the vehicle (hereinafter referred to as X direction). Yes. However, the front cover 21 exposes only the first light-emitting portion 43 a and the second light-emitting portion 43 b of the light guide 4, which will be described later, of the lamp 1 to the outside of the door 10. In addition, about the mechanism of the door handle 20, since it is not related to the structure of this invention, description is abbreviate | omitted.

The lamp 1 includes an LED 2, a control board 3, and a light guide 4.
Among these, the LED 2 and the control board 3 are disposed between the light guide 4 and the rear cover 22. Moreover, LED2 is arrange | positioned so that the light-incidence part 42 of the light guide 4 mentioned later may be opposed (refer FIG. 5).

3 and 4 are a front view and a rear view of the light guide 4, and FIG. 5 is a cross-sectional view taken along the line II-II of FIG. In the following description, the terms “front” and “rear” refer to the vehicle outward direction and the vehicle inward direction in the X direction unless otherwise specified.
As shown in these drawings, the light guide 4 is a thin plate-shaped light guide lens formed in the same shape as the front view shape of the door handle 20. On the rear surface of the light guide 4, centered on a position on the center line in the vertical direction (hereinafter referred to as the Z direction) (the one-dot chain line in FIG. 3) and slightly closer to the one end side than the center in the Y direction. A convex portion 41 having a circular shape in rear view is formed. In the center of the convex portion 41, a light incident portion 42 for allowing the light emitted from the LED 2 to enter the light guide 4 is formed in a hemispherical concave shape.

  At one end side (left side in the drawing) of the light guide 4 in the Y direction with respect to the light incident portion 42, the end portion is bent inward in the Y direction, and the front surface of the end portion is the first light emitting portion 43a. Is configured. The first light emitting portion 43a is formed so that the width gradually decreases toward the upper end in the upper half portion and substantially the same width in the lower half portion, and the lower end thereof has the same Y direction as that of the light incident portion 42. To the position. Further, the first light emitting unit 43 a protrudes to the front side and is configured to be exposed to the outside of the door 10 without being covered by the front cover 21.

  In addition, a portion of the front surface of the light guide 4 on one end side with respect to the light incident portion 42 that is positioned in front of the convex portion 41 has a first semicircular first reflection surface that is substantially semicircular when viewed from the front centering on the light incident portion 42. 44a is formed. The first reflection surface 44a is a total reflection surface having a circular arc shape with the LED 2 as a focal point, and totally reflects the light incident from the light incident portion 42 into the light guide 4 so as to spread radially in the YZ plane. .

  Further, on the portion of the rear surface of the light guide 4 on one end side with respect to the light incident portion 42, a portion excluding the convex portion 41 is divided into a plurality of reflection blocks 45 a that are radially divided with the light incident portion 42 as the center. , ... are formed. Of each reflection block 45a, the portion located behind the first light emitting unit 43a is formed in a stepped shape in which a second reflection surface 46a that is an inclined surface and a step surface 47a that is parallel to the YZ plane are alternately connected. Yes. More specifically, the stepped portion is formed such that each step surface 47a is positioned forward stepwise as the step surface 47a moves away from the light incident portion 42, and each second reflecting surface 46a is formed on the light incident portion 42. In the cross section when the reflection block 45a is cut along the center line of the reflection block 45a passing through the inclined block, the inclined surface forms an angle of 45 degrees with respect to the YZ plane. The second reflection surface 46a further reflects the light totally reflected by the first reflection surface 44a so as to spread radially in the YZ plane in the X direction, and directs the light toward the first light emitting unit 43a.

  Here, since the step surface 47a parallel to the YZ plane does not reflect the light from the first reflection surface 44a, a portion located in front of the step surface 47a when the first light emitting unit 43a is viewed from the front is present. It becomes a dark part. However, if the stepped surface 47a is simply reduced in order to reduce this dark portion, the second reflecting surface 46a, which is an inclined surface, becomes larger, and the light guide 4 becomes thicker in the X direction. Therefore, the light guide 4 is excessively changed after the division pitch angle p of the reflection block 45a is changed according to the distance from the first light emitting portion 43a located in front of each reflection block 45a to the light incident portion 42. The total area of the second reflecting surface 46a in each reflecting block 45a is appropriately set so that the first light emitting portion 43a emits light with a uniform luminous intensity over a range where the thickness is not increased. Specifically, the division pitch angle p of the reflection block 45a is set so that the first light emitting portion 43a portion in each reflection block 45a is larger as it is closer to the light incident portion 42, and is smaller as it is farther from the light incident portion 42. ing.

  On the other hand, the other end side in the Y direction (right side in the figure) of the light guide 4 is formed so as to have substantially the same Z direction width narrower than the one end side. The front surface of each part constitutes the second light emitting part 43b. The second light-emitting portion 43b is formed so as to incline downward toward the tip side with the same width. Further, the second light emitting portion 43 b protrudes to the front side, and is configured to be exposed to the outside of the door 10 without being covered by the front cover 21.

  A third reflecting surface 44 b is formed on the front surface of the light guide 4 on the other end side of the light incident portion 42 and at a portion located substantially in front of the convex portion 41. The third reflecting surface 44b is a total reflection surface having an arc shape in cross section with the LED 2 as a focal point, and the light incident on the light guide 4 from the light incident portion 42 is parallel to the other end along the Y direction. Make the total reflection.

  In addition, a portion of the rear surface of the light guide 4 on the other end side of the light incident portion 42 that is located behind the second light emitting portion 43b has a plurality of portions that are divided with an equal width in the Z direction. Reflection blocks 45b are formed. Of each reflection block 45b, the portion located behind the second light emitting unit 43b is formed in a stepped shape in which the fourth reflection surface 46b that is an inclined surface and the step surface 47b parallel to the YZ plane are alternately connected. Yes. More specifically, the stepped portion is formed such that each step surface 47b is positioned forward stepwise as the step surface 47b moves away from the light incident portion 42, and each fourth reflection surface 46b is YZ in the XY cross section. The inclined surface forms an angle of 45 degrees with respect to the plane. The fourth reflecting surface 46b causes the light totally reflected along the Y direction by the third reflecting surface 44b to be further totally reflected in the X direction and directed toward the second light emitting unit 43b.

  Here, since the step surface 47b parallel to the YZ plane does not reflect the light from the third reflection surface 44b, the portion located in front of the step surface 47b when the second light emitting unit 43b is viewed from the front surface. It becomes a dark part. However, if the stepped surface 47b is simply reduced in order to reduce this dark portion, the fourth reflecting surface 46b, which is an inclined surface, becomes larger, and the light guide 4 becomes thicker in the X direction. Therefore, the width of each reflective block 45b in the Z direction and the fourth width of each reflective block 45b are set so that the second light emitting unit 43b emits light with a uniform luminous intensity over a range in which the light guide 4 is not excessively thick. The total area of the reflecting surface 46b is appropriately set.

  In the lamp 1 having the above-described configuration, as shown in FIG. 5, the light emitted from the LED 2 and incident on one end side in the light guide 4 from the light incident portion 42 is within the YZ plane by the first reflecting surface 44a. Are totally reflected so as to spread radially, and further totally reflected in the X direction by the second reflecting surfaces 46a,..., And then emitted forward from the first light emitting portion 43a. On the other hand, the light emitted from the LED 2 and incident on the other end side of the light guide 4 from the light incident portion 42 is totally reflected in the Y direction by the third reflecting surface 44b, and in the X direction by the fourth reflecting surfaces 46b,. After further total reflection, the light is emitted forward from the second light emitting unit 43b. Thus, the first light emitting unit 43a and the second light emitting unit 43b disposed so as to sandwich the grip 20a of the door handle 20 emit light.

  According to the lamp 1 described above, the first light emitting portion 43a and the second light emitting portion 43b of the light guide 4 are arranged at two locations along the longitudinal direction of the door handle 20 so as to sandwich the grip portion 20a of the door handle 20. Thus, the user does not touch the first light emitting unit 43a and the second light emitting unit 43b when holding the holding unit 20a. In addition, as a portion sandwiched between the first light emitting unit 43a and the second light emitting unit 43b, the grip 20a of the door handle 20 can be easily visually recognized even at night. Accordingly, it is possible to prevent the first light emitting unit 43a and the second light emitting unit 43b from being attached to the first light emitting unit 43a and the second light emitting unit 43b, and to easily visually recognize the door handle 20 at night.

  Further, since the light from the LED 2 is emitted only through the light guide 4, unlike the conventional case where the light from the light source is guided to the light emitting portion by the optical fiber, the light is not attenuated by the optical fiber. The planar light emission can be realized with a simple configuration that does not require an optical fiber.

  In the light guide 4, the first light emitting portion 43 a is formed longer in the Z direction than the second light emitting portion 43 b, and the light incident portion 42 is closer to the first light emitting portion 43 a than the center in the Y direction. Since the light incident portion 42 is simply disposed at the center in the Y direction, the light spreading radially from the light incident portion 42 (first reflective surface 44a) in the YZ plane is compared with the case where the light incident portion 42 is simply disposed at the center in the Y direction. Among these, the amount of effective light traveling toward the first light emitting unit 43a can be increased, and as a result, the first light emitting unit 43a can emit light efficiently.

  Moreover, the part located behind the 1st light emission part 43a (2nd light emission part 43b) among the rear surfaces of the light guide 4 is parallel to the 2nd reflective surface 46a (4th reflective surface 46b) and YZ plane. Since the stepped surface 47a (stepped surface 47b) is formed in a stepped shape, the light guide 4 can be formed thin, and thus can be formed lightly and inexpensively.

  The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.

  For example, in the above embodiment, the first light emitting unit 43a and the second light emitting unit 43b are arranged in parallel in the vehicle front-rear direction with the gripping part 20a interposed therebetween, but are arranged in parallel in the vertical direction with the gripping part 20a in between. It is also good to do.

  In addition, the light emitting units are not limited to the two places of the first light emitting unit 43a and the second light emitting unit 43b, and may be three or more places. For example, the central portion of the door handle 20 may be caused to emit light linearly from the first light emitting unit 43a to the second light emitting unit 43b.

  The first light emitting unit 43a and the second light emitting unit 43b are not particularly limited. For example, the first light emitting unit 43a and the second light emitting unit 43b are turned on when the user performs a keyless entry operation from outside the vehicle, and then the holding unit 20a of the door handle 20 is held. It may be turned off when

1 Lamp (Automobile door handle lamp)
2 LED (light source)
3 Control board 4 Light guide body 41 Convex part 42 Light incident part 43a 1st light emission part 43b 2nd light emission part 44a 1st reflective surface 44b 3rd reflective surface 45a, 45b Reflective block 46a 2nd reflective surface 46b 4th reflective surface 47a , 47b Step surface 10 Door 11 Door panel 11a Opening portion 20 Door handle 20a Holding portion 21 Front cover 22 Rear cover p Divided pitch angle

Claims (3)

In the automotive door handle lamp provided on the long door handle outside the automobile door,
A light source;
A light guide that is provided inside the door handle and has a light emitting portion exposed to the outside of the door, and that emits light from the light source from the light emitting portion,
With
The light emitting part is disposed in two places along the lengthwise direction of the door handle so as to sandwich the grip part of the door handle. The two light emitting units are composed of a first light emitting unit and a second light emitting unit that is shorter in a direction perpendicular to the longitudinal direction than the first light emitting unit,
The light guide is
The first light emitting unit and the second light emitting unit are formed long along the long direction so that they are disposed at both ends,
2. The light incident portion for allowing light from the light source to enter the light guide body is disposed at a position closer to the first light emitting portion than the center in the longitudinal direction. Car door handle lamp.   The light guide has a reflecting surface that reflects light traveling through the light guide to the light emitting unit, and a step surface orthogonal to the thickness direction of the light guide. The vehicle door handle lamp according to claim 1, wherein the lamp is formed in a stepped shape.

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