JP2016177994A - Vehicle lamp fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle lamp fitting which achieves reduction of the number of components and the assembly work hours.SOLUTION: A vehicle lamp fitting of the invention includes: a heat sink member 2; a projection lens member 6 having a projection lens part 6a; a metal frame member 9 attached to the heat sink member 2 and holding the projection lens member 6; and a sub reflector member 10. Attaching flange parts 9f, 9g for attaching the projection lens member 6 to the sub reflector member 10 are formed in the metal frame member 9. The sub reflector member 10 is positioned between the metal frame member 9 and the projection lens member 6. The sub reflector member 10 and the projection lens member 6 have attached flange parts 10f, 10g, 6d, 6e. The sub reflector member 10 and the projection lens member 6 are positioned to be fixed to the metal frame member 9.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicular lamp including a main reflector member that reflects light from a light source unit and a sub reflector member that uses light from the light source unit for purposes other than main light distribution.

  2. Description of the Related Art Conventionally, a vehicular lamp including a main reflector member that reflects light from a light source unit and a sub reflector member that uses light from the light source unit for purposes other than main light distribution is known (see, for example, Patent Document 1). .

  In the vehicular lamp disclosed in Patent Document 1, a projection lens member having a projection lens unit that collects reflected light from a main reflector member to form a main light distribution, and reflects light from a light source unit to be mainly used. Sub-reflector members used for purposes other than light distribution are provided on opposite sides of the metal frame member.

JP 2005-317465 A

  In this type, since the projection lens member and the sub-reflector member must be separately attached to the metal frame member, there are inconveniences such as an increase in the number of parts and an increase in the number of assembling steps.

  This invention is made | formed in view of said situation, and is providing the vehicle lamp which can aim at reduction of a number of parts and an assembly man-hour.

A vehicular lamp according to the present invention is provided with a light source part and a main reflector member having a reflecting surface for reflecting light from the light source part to dissipate heat from the light source part,
A projection lens member having a projection lens unit located in front of the reflection surface of the main reflector member and condensing the reflected light from the reflection surface and projecting it as main light distribution;
A metal frame member attached to the heat sink member and holding the projection lens member;
A sub-reflector member having a reflecting surface that reflects a part of light used for other than the main light distribution and a main opening that allows the light forming the main light distribution to pass through;
The metal frame member is formed with a constituent wall portion extending in the vehicle width direction and extending in the front-rear direction, and a mounting flange for attaching the projection lens member and the sub reflector member to the front end of the constituent wall portion The part is formed at intervals in the vehicle width direction,
The sub-reflector member is disposed between the metal frame member and the projection lens member,
The sub-reflector member and the projection lens member are formed with attached flange portions corresponding to the respective attachment flange portions, and the attachment flange portion and the attachment flange portion are positioned, and the sub-reflector member The projection lens member is fixed to the metal frame member.

  According to the present invention, since the sub-reflector member is disposed between the metal frame member and the projection lens member, when the projection lens member is assembled to the metal frame member, the sub-reflector member is simultaneously used as the metal frame member. Can be assembled. For this reason, it is possible to reduce the number of parts and assembly man-hours.

  Further, since the sub-reflector member and the projection lens member can be assembled at a time, the positioning accuracy is also improved.

It is the front view which looked at the vehicle lamp which concerns on this invention from the vehicle front side. FIG. 2 is a cross-sectional view of the vehicular lamp shown in FIG. 1 taken along line AA and viewed from the direction of arrow A. It is sectional drawing which looked at the vehicle lamp shown in FIG. 1 along the BB line, and was observed from the arrow B direction. It is a disassembled perspective view of the projection lens member shown in FIG. 2, a metal frame member, and a sub reflector member. It is the front view which looked at the sub reflector member shown in Drawing 4 from the vehicles front side. FIG. 6 is a cross-sectional view of the sub-reflector member shown in FIG. 5 taken along line CC and viewed from the direction of arrow C. It is a perspective view of the fixing metal fitting shown in FIG. It is a perspective view which shows the assembly | attachment state of the projection lens member shown in FIG. 4, a metal frame member, and a sub reflector member.

Embodiments of a vehicular lamp according to the present invention will be described below with reference to the drawings.
FIG. 1 is a front view of a vehicular lamp according to the present invention viewed from the front side of the vehicle, and FIG. 2 is a cross-sectional view of the vehicular lamp shown in FIG. 3 is a cross-sectional view of the vehicular lamp shown in FIG. 2 taken along line BB and viewed from the direction of the arrow.
In the following description, the front is defined as the vehicle front side with reference to the driver, and the left-right direction is described as the vehicle width direction.

  1 to 3, reference numeral 1 denotes a vehicular lamp. The vehicular lamp 1 has a heat sink member 2 as shown in FIGS. The heat sink member 2 is formed with heat radiating fins 3 as shown in FIG.

The light source part 4 shown in FIG. 2, FIG. 3 and the main reflector member 5 are being fixed to the heat sink member 2 by the appropriate fastening member.
The light source part 4 is comprised from semiconductor light emitting elements, such as LED. The main reflector member 5 has an elliptical reflecting surface 5a. As shown in FIGS. 2 and 3, the reflecting surface 5 a reflects light from the light source unit 4.

  A projection lens member 6 having a hemispherical projection lens portion (projector lens portion) 6a is located in front of the light reflector 4 in the direction of reflection by the main reflector member 5.

  As shown in FIGS. 2 and 3, the optical axis O1 of the projection lens unit 6a extends in parallel with or parallel to the optical axis O2 of the reflecting surface 5a of the main reflector member 5. The projection lens unit 6a collects the reflected light from the reflecting surface 5a and projects it as the main light distribution P.

  As shown in FIG. 3, a shade driving member 7 is fixed to the heat sink member 2 by screws 8 'and 8'. The shade driving member 7 is roughly configured by a movable rod 7a that is movable in the vertical direction and a solenoid 7b that moves the movable rod 7a up and down.

  A shade member 8 is provided at the tip of the movable rod 7a. The upper end edge 8a of the shade member 8 extends in the vehicle width direction. When the upper end edge 8a is positioned in the vicinity of the focal position F (see FIG. 3) of the reflecting surface 5a, a cut-off line (bright / dark boundary line) following the shape of the upper end edge 8a is formed.

  When the movable rod 7a is in the raised position, the upper edge 8a of the shade member 8 is positioned in the vicinity of the focal position F of the reflecting surface 5a. Thereby, the main light distribution pattern of a low beam (passing beam) is formed.

  When the movable rod 7a is in the lowered position by driving the solenoid 7b, the upper end edge 8a of the shade member 8 is retracted from the vicinity of the focal position F of the reflecting surface 5a. Thereby, a main light distribution pattern of so-called normal light distribution (high beam) is formed.

  A metal frame member 9 having the shape shown in FIG. 4 is attached to the heat sink member 2. The metal frame member 9 is formed with a plurality of attachment portions for attachment to the heat sink member 2. In FIG. 4, reference numeral 9 x indicates one of a plurality of attachment portions to the heat sink member 2.

  The metal frame member 9 serves to hold the projection lens member 6. The metal frame member 9 is configured by, for example, aluminum die casting. Since the member that holds the projection lens member 6 is constituted by the metal frame member 9, the rigidity of the member that holds the projection lens member 6 can be increased, and an undue deformation caused by heat can be prevented.

A sub-reflector member 10 having the shape shown in FIG. 4 is disposed between the metal frame member 9 and the projection lens member 6.
The projection lens member 6 and the sub reflector member 10 are formed of a resin material. The thermal conductivity of the sub reflector member 10 is smaller than the thermal conductivity of the metal frame member 9.

  As shown in FIG. 4, the metal frame member 9 has a structural wall portion 9 a that extends in the vehicle width direction and extends in the front-rear direction. A space surrounded by the constituent wall portion 9 a is an opening 9 b that guides the light reflected by the reflecting surface 5 a toward the projection lens member 6.

  The constituent wall portion 9a includes mounting walls 9c and 9d that exist on both sides in the vehicle width direction and a lower connecting wall 9e that connects the mounting walls 9c and 9d. The upper side of the component wall 9a is open.

  The front ends of the mounting walls 9c, 9d are mounting flange portions 9f, 9g for mounting the projection lens member 6 and the sub reflector member 10. The front end of the lower connecting wall 9e is a lower abutting flange portion 9h with which a later-described abutted flange portion of the sub reflector member 10 abuts.

  As shown in FIGS. 1, 2, and 4, the projection lens member 6 includes a plate-like portion 6b extending from the projection lens portion 6a in the vehicle width direction, and forms a deformed lens member. The projection lens portion 6a is unevenly located on the attachment wall 9d side, and the plate-like portion 6b is unevenly located on the attachment wall 9c side.

The sub-reflector member 10 plays a role of reflecting a part of light other than the main light distribution P from the light source unit 4 and irradiating the plate-like part 6b. In the case where the plate-like part 6b is a through lens or a cylindrical lens, the projection lens member 6 as a whole exhibits brightness by irradiation of the plate-like part 6b of light other than the main light distribution P, and a design effect is exhibited. The
Further, light used other than the main light distribution P may be used as light for assisting the main light distribution P.

  On the mounting flange portions 9f and 9g, common positioning pins 9i and 9j for positioning the sub reflector member 10 and the projection lens member 6 are formed so as to protrude forward.

  The projection lens member 6 is formed with an outer flange portion 6c so as to surround the projection lens portion 6a and the plate-like portion 6b. The both sides in the vehicle width direction of the outer flange portion 6c are attached flange portions 6d and 6e corresponding to the attachment flange portions 9f and 9g.

  Positioning holes 6f and 6g to be fitted to the positioning pins 9i and 9j are formed in the mounted flange portions 6d and 6e at positions corresponding to the positioning pins 9i and 9j.

  The sub-reflector member 10 has a component wall portion 10a corresponding to the metal frame member 9 and extending in the vehicle width direction and extending in the front-rear direction. The constituent wall portion 10a is composed of upright walls 10b and 10c corresponding to the attachment walls 9c and 9d, and a lower connecting wall 10e for connecting these upright walls 10b and 10c. The upper side of the constituent wall portion 10a is opened to form an open space 10a '(see FIG. 8). Thus, heat is not trapped inside the sub reflector member 10 due to heat generated by the light source unit 4 and heat generated by the solenoid 7b.

  The front ends of the upright walls 10b and 10c are attached flange portions 10f and 10g corresponding to the attachment flange portions 9f and 9g, respectively. The front end of the lower connection wall 10e is a contacted flange portion 10h where the lower contact flange portion 9h of the lower connection wall 9e contacts the lower portion of the outer flange portion 6c.

  Positioned holes 10i and 10j that are fitted to the positioning pins 9i and 9j are formed in the mounted flange portions 10f and 10g at positions corresponding to the positioning pins 9i and 9j.

  As shown in FIGS. 2, 4 to 6, the sub-reflector member 10 includes a reflecting surface and a main light distribution that reflect a part of the light from the light source unit 4 other than that used for the main light distribution P. And a main opening 10k through which light forming P is passed.

  As shown in FIGS. 2 and 6, the reflecting surface of the sub-reflector member 10 is reflected by the first reflecting surface 11a that reflects the light P ′ traveling forward from the light source unit 4 backward and the first reflecting surface 11a. The second reflection surface 12a reflects the emitted light forward. The first reflecting surface 11a is constituted by a concave mirror so as to focus the light from the light source unit 4.

  The first reflecting surface 11a is provided above the second reflecting surface 12a. Of the light from the light source unit 4 that is reflected by the main reflector member 5 and used for purposes other than the main light distribution P, a part of the light that goes upward and in the vehicle width direction is focused downward by the first reflecting surface 11a. Is reflected.

  The first reflection wall 11 forming the first reflection surface 11a and the second reflection wall 12 forming the second reflection surface 12a are reflected by the first reflection surface 11a and travel toward the second reflection surface 12a. The optical paths are connected to each other by a reinforcing curved wall portion 14 in which a sub-opening 13 is formed in the vicinity of the converging portion of the light reflected by the first reflecting surface 11a.

  The metal frame member 9 is attached to the metal frame member 9 by fixing brackets 15 provided only on both sides in the vehicle width direction as shown in FIG. A boss portion 9n having a screw hole 9m for fastening and fixing the sub reflector member 10 and the projection lens member 6 is formed as shown in FIG.

  The boss portion 9n is formed at a position where the height is lower than the attachment flange portions 9f and 9g toward the vehicle rear side with the attachment flange portions 9f and 9g as a reference of the height.

  A notch 9e is formed in the mounting wall 9d on the side close to the projection lens 6a. As a result, the mounting flange portion 9g is divided into upper and lower portions, so that the heat of the metal frame member 9 is hardly transmitted to the projection lens portion 6a via the sub-reflector member 10.

Further, in the vicinity of the boss portion 9n of the mounting flange portions 9f and 9g, as shown in FIG. 4, the sub-reflector member 10 is slightly raised toward the front side of the vehicle on the side facing the sub-reflector member 10. Contact surface portions 9f 'and 9g' that come into contact with the mounted flange portions 10f and 10g are formed.
These contact surface portions 9 f ′ and 9 g ′ serve as vehicle front-rear direction positioning reference portions of the sub reflector member 10 with respect to the metal frame member 9.

Attaching the projection lens member 6 to the attachment flange portions 10f and 10g is slightly raised toward the front side of the vehicle on the side facing the projection lens member 6 at a position corresponding to the contact surface portions 9f ′ and 9g ′. Contact surface portions 10f 'and 10g' that come into contact with the flange portions 6d and 6e are formed.
The contact surface portions 10 f ′ and 10 g ′ serve as vehicle front-rear direction positioning reference portions of the projection lens member 6 with respect to the sub reflector member 10.

  As shown in FIG. 7, the fixing bracket 15 includes a rectangular pressing flat plate portion 15a that presses the projection lens member 6 toward the mounting flange portions 9f and 9g, and a bent plate portion 15b bent toward the boss portion 9n. The boss portion 9n has a fastening plate portion 15c fastened by the screw 16 shown in FIG. A screw insertion hole 15d is formed in the fastening plate portion 15c.

  The mounting flange portions 6d and 6e of the projection lens member 6 are slightly raised toward the front side of the vehicle at the positions corresponding to the contact surface portions 10f ′ and 10g ′ at both ends of the pressing flat plate portion 15a. The pressed surface portions 6f ′ and 6g ′ pressed by the are formed.

  In this embodiment, first, a metal frame member 9 is fastened and fixed to the heat sink member 2 shown in FIG. Next, the sub-reflector member 10 and the projection lens member 6 shown in FIG. 4 are positioned by the positioning pins 9 i and 9 j of the metal frame member 9.

  Next, the fastening plate portion 15c of the fixing bracket 15 is pressed toward the boss portion 9n along the wall surfaces of the attachment walls 9c and 9d from the front side of the vehicle. Thereafter, the fixing bracket 15 is screwed to the metal frame member 9 with the screws 16 shown in FIG.

Then, due to the pressing force of the pressing flat plate portion 15a of the fixture 15, the sub reflector member 10 and the projection lens member are brought into contact via the contact surface portions 9f ′, 10f ′ (9g ′, 10g ′) and the pressed surface portion 6f ′ (6g ′). 6 are pressed against the metal frame member 9. Thus, the sub reflector member 10 and the projection lens member 6 are fixed to the metal frame member 9.
FIG. 8 shows a perspective view in which the metal frame member 9, the sub reflector member 10, and the projection lens member 6 are assembled together.

  According to this embodiment, the sub reflector member 10 and the projection lens member 6 are positioned on the metal frame member 9 by using the common positioning pins 9i and 9j, and the sub reflector member 10 and the projection lens member 6 are positioned. Since it can be assembled and fixed at a time, the number of parts can be reduced. As a result, the number of assembling steps can be reduced and the positioning accuracy can be improved.

  Further, according to this embodiment, since the sub-reflector member 10 is made of resin, it is difficult for heat from the light source unit 4 to be transmitted to the resin-made projection lens member 6. As a result, distortion of the projection lens member 6 due to heat from the light source unit 4 is reduced, and light distribution performance is improved.

Further, according to this embodiment, even if the fixing bracket 15 for fixing the projection lens member 6 and the sub reflector member 10 to the metal frame member 9 is made of metal, the fixing bracket 15 and the projection lens member 6 Is configured to be in tight contact only via the pressed surface portions 6f ′ and 6g ′, the actual contact area can be reduced, and the amount of heat transferred from the metal frame member 9 to the projection lens member 6 via the fixing bracket 15 can also be reduced. .
For the metal frame member 9, it is desirable to use an austenitic SUS material having a relatively low thermal conductivity among metal materials.

  In addition, the contact between the sub-reflector member 10 and the metal frame member 9 is made only by the contact surface portions 9f ′ and 9g ′, and the contact between the sub-reflector member 10 and the projection lens member 6 is made only through the contact surface portions 10f ′ and 10g ′. Since the structure is in close contact, the amount of heat transferred from the metal frame member 9 to the projection lens member 6 via the sub-reflector member 10 can also be reduced.

  Furthermore, since the metal frame member 9 and the sub-reflector member 10 are only in tight contact via the contact surface portions 9f 'and 9g', distortion due to thermal expansion of the sub-reflector member 10 is also alleviated.

DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Heat sink member 6 ... Projection lens member 6a ... Projection lens part 9 ... Metal frame member 10 ... Sub reflector member 6d, 6e ... Attachment flange part 9f, 9g ... Attachment flange part 10f, 10g ... Cover Mounting flange

Claims (6)

A heat sink member that is provided with a light source part and a main reflector member having a reflecting surface that reflects light from the light source part, and radiates heat from the light source part;
A projection lens member having a projection lens unit located in front of the reflection surface of the main reflector member and condensing the reflected light from the reflection surface and projecting it as main light distribution;
A metal frame member attached to the heat sink member and holding the projection lens member;
A sub-reflector member having a reflecting surface that reflects a part of light used for other than the main light distribution and a main opening that allows the light forming the main light distribution to pass through;
The metal frame member is formed with a constituent wall portion extending in the vehicle width direction and extending in the front-rear direction, and a mounting flange for attaching the projection lens member and the sub reflector member to the front end of the constituent wall portion The part is formed at intervals in the vehicle width direction,
The sub-reflector member is disposed between the metal frame member and the projection lens member,
The sub-reflector member and the projection lens member are formed with attached flange portions corresponding to the respective attachment flange portions, and the attachment flange portion and the attachment flange portion are positioned, and the sub-reflector member The vehicular lamp, wherein the projection lens member is fixed to the metal frame member.   The projection lens member and the sub-reflector member are formed of a resin material, and the projection lens member is formed with a plate-like portion that is irradiated with light reflected by the reflecting surface of the sub-reflector member. The vehicular lamp according to claim 1, wherein is a plain lens or a cylindrical lens.   The reflection surface of the sub-reflector member reflects the light reflected from the first reflection surface to the front by reflecting the light reflected from the light source unit while converging the light from the light source toward the rear. A first reflecting surface, and the first reflecting surface and the second reflecting surface are traveling light paths of light reflected by the first reflecting surface toward the second reflecting surface, the first reflecting surface. The vehicular lamp according to claim 1, wherein the vehicular lamp is connected by a reinforcing curved wall portion in which a sub-opening is formed in the vicinity of the converging portion of the light reflected by the surface. The mounting flange portion is provided with a common positioning pin for positioning the sub-reflector member and the projection lens member, and the sub-reflector member and the projection lens member are positioned by the positioning pin,
Boss portions for fastening to the metal frame member by the fixing brackets are formed on both sides in the vertical direction across the mounting flange portion on the constituent wall portion of the metal frame member,
A contact surface portion that contacts the mounting flange portion of the sub-reflector member is formed on the mounting flange portion, and a contact surface portion that contacts the mounting flange portion of the projection lens member is formed on the mounting flange portion of the sub-reflector member. Formed,
The fixing bracket includes a pressing flat plate portion that presses the projection lens member toward the mounting flange portion, a bent plate portion that is bent toward the boss portion, and a fastening plate portion that is fastened to the boss portion with a screw. The vehicular lamp according to claim 2, wherein the vehicular lamp is provided.   The vehicular lamp according to claim 4, wherein a pressed surface portion that is pressed by the pressing flat plate portion is formed on a mounted flange portion of the projection lens member.   5. The vehicular lamp according to claim 4, wherein the sub-reflector member is configured such that a constituent wall constituting a main opening is opened upward.