JP2016100232A - Vehicular projector lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular projector lamp including a second shade securely fixed with high accuracy to stably form a desired overhead light distribution pattern.SOLUTION: A vehicular projector lamp 1 includes a halogen bulb (light source) 3, a reflector 4 for reflecting light emitted from the halogen bulb 3, a projection lens 2 for projecting the light reflected by the reflector 4 to the front side of a vehicle, a lens holder 8 holding the projection lens 2, a first shade 5 arranged between the projection lens 2 and the halogen bulb 3 in the longitudinal direction of the vehicle to form a low-beam light distribution pattern, and a second shade 6 arranged between the projection lens 2 and the first shade 5 in the longitudinal direction of the vehicle to form an overhead light distribution pattern. An assembly fixing part 13 is formed inside the lens holder 8, and the second shade 6 is placed and fixed onto the assembly fixing part 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle projector lamp including a shade that forms an overhead light distribution pattern.

  Some vehicle headlamps include a shade for forming an overhead light distribution pattern that illuminates a sign or the like positioned in front of the vehicle (see, for example, Patent Document 1). As such a vehicle headlamp, a light source, a reflector that reflects light emitted from the light source, a projection lens that projects light reflected by the reflector toward the front of the vehicle, a lens holder that holds the projection lens, A first shade disposed between the projection lens and the light source in the vehicle longitudinal direction to form a low beam light distribution pattern, and an overhead disposed between the projection lens and the first shade in the vehicle longitudinal direction. A projector lamp configured to include a second shade that forms a light distribution pattern is used.

  Here, FIG. 8 shows a first shade and a second shade used in a conventional projector lamp for a vehicle. The first shade 105 includes a rectangular frame-shaped resin portion 105A and the frame of the resin portion 105A. And a plate-shaped metal portion 105B arranged in the plate. The second shade 106 is formed by bending a metal plate into a laterally "<" shape when viewed from the side, and includes a slant-like reflecting portion 106A and a support stay extending integrally from the reflecting portion 106A. 106B is provided.

  Thus, the second shade 106 has a screw 114 inserted into two circular holes 106a (one not shown) formed at the end of the support stay 106B at the lower end of the resin portion 105A of the first shade 105. It was attached to the first shade 105 by screwing into the two formed screw holes 105a.

JP 2014-029772 A

  However, in the mounting structure of the second shade 106 shown in FIG. 8, since the second shade 106 is attached to the first shade 105 in an overhang state, the reflecting portion 105A that plays an important role in light distribution performance. However, there is a problem in that a desired overhead light distribution pattern cannot be formed because the position accuracy is poor, the position accuracy is poor, and vibration is likely to occur. In addition, the second shade 106 has a problem that it is vulnerable to an impact because the reflection portion 106A is attached to the first shade 105 in an overhanging state.

  The present invention has been made in view of the above problems, and the object of the present invention is for a vehicle capable of stably forming a desired overhead light distribution pattern by fixing the second shade with high accuracy and reliability. It is to provide a projector lamp.

  In order to achieve the above object, an invention according to claim 1 includes a light source, a reflector for reflecting light emitted from the light source, a projection lens for projecting the light reflected by the reflector toward the front of the vehicle, and the projection lens. A holding lens holder; a first shade that is disposed between the projection lens and the light source in the vehicle front-rear direction to form a low beam light distribution pattern; and the projection lens and the first shade in the vehicle front-rear direction. In a vehicle projector lamp configured to include a second shade disposed between and forming an overhead light distribution pattern, an assembly fixing portion is formed inside the lens holder, and the second mounting portion is formed on the assembly fixing portion. The shade is placed and fixed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the assembly fixing portion includes parallel rib-shaped support portions that support two left and right portions of the second shade.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the assembly fixing portion includes a receiving portion that receives a front end portion of the second shade.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, a plurality of positioning protrusions are formed on the assembly fixing portion, a plurality of engagement holes are formed on the second shade, The second shade is positioned with respect to the assembly fixing portion by engagement of the positioning protrusion and reception of the front end portion of the second shade by the receiving portion.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the second shade is formed of a metal plate.

  According to the first aspect of the present invention, the second shade can be placed on the assembly fixing portion formed inside the lens holder and can be fixed with high accuracy and reliability. Even if an impact is received, the posture does not change, and a desired overhead light distribution pattern can be stably formed by the second shade.

  According to the second aspect of the present invention, since the left and right portions of the second shade are supported by the parallel rib-shaped support portions provided on the assembly fixing portion, the reflection portion of the second shade is also affected by vibration and impact. The posture does not change, and a desired overhead light distribution pattern is stably formed.

  According to the invention described in claim 3, since the front end portion of the second shade is received by the receiving portion of the assembly fixing portion, the assemblability of the second shade is improved and the second shade is the assembly fixing portion. It is fixed more securely.

  According to the fourth aspect of the present invention, the second shade is caused by the engagement of the positioning projection of the assembly fixing portion to the engagement hole of the second shade and the reception of the front end portion of the second shade by the receiving portion of the assembly fixing portion. It is positioned and fixed to the assembly fixing part with high accuracy.

  According to invention of Claim 5, since the 2nd shade was comprised with the metal plate strong against a heat | fever, the heat | fever condensed by the projection lens was interrupted | blocked by the 2nd shade, and malfunctions, such as a molten damage of a surrounding resin component, etc. Can be prevented.

1 is a longitudinal sectional view of a vehicle projector lamp according to the present invention. 1 is an exploded perspective view of a vehicle projector lamp according to the present invention. It is a front view of the lens holder of the projector lamp for vehicles concerning the present invention. It is a front side perspective view which shows the attachment procedure to the lens holder of the 2nd shade in the projector lamp for vehicles which concerns on this invention. It is a back side perspective view which shows the attachment procedure to the lens holder of the 2nd shade in the projector lamp for vehicles which concerns on this invention. It is a back side perspective view of the lens holder to which the 2nd shade of the projector lamp for vehicles concerning the present invention was fixed. It is a front view of the lens holder to which the 2nd shade of the projector lamp for vehicles concerning the present invention was fixed. It is a perspective view of the 1st shade and the 2nd shade of the conventional projector lamp for vehicles.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a longitudinal sectional view of a vehicle projector lamp according to the present invention, FIG. 2 is an exploded perspective view of the vehicle projector lamp, and the vehicle projector lamp 1 shown in FIG. It is a lamp. Since the left and right headlamps are symmetrical and have the same basic configuration, only one of the vehicle projector lamps 1 will be illustrated and described below.

  As shown in FIG. 1, a vehicle projector lamp 1 according to the present embodiment used as a headlamp includes a projection lens 2 having an optical axis x extending in the vehicle front-rear direction, and a rear focal point of the projection lens 2. A halogen light bulb 3 as a light source disposed rearward (right side in FIG. 1), a reflector for reflecting light emitted from the halogen light bulb 3 toward the front of the vehicle (left side in FIG. 1), and in the vehicle front-rear direction Between the projection lens 2 and the halogen light bulb 3 and in the vicinity of the rear focal point of the projection lens 2, between the projection lens 2 and the first shade 5 in the vehicle front-rear direction. The second shade 6 is arranged.

  The projection lens 2 is an aspherical lens, and is attached to the front end surface of a cylindrical lens holder 8 by a ring-shaped bezel 7. Specifically, as shown in FIG. 2, the bezel 7 engages an engaging claw 8 a formed at the top of the front end outer periphery of the lens holder 8 with an engaging hole 7 a formed at the top of the outer periphery. At the same time, the screws 9 inserted through the brackets 7b formed at the left and right two places in the lower half are screwed into the brackets 8b formed at the left and right of the outer periphery of the lower half of the lens holder 8 to project onto the front end of the lens holder 8. Attached with the lens 2.

  The halogen light bulb 3 is inserted and fixed from behind in an insertion hole 4a formed in the center of the reflector 4. In other words, the fixing ring 10 is fixed to the end edge of the insertion hole 4a on the rear surface of the reflector 4 by three screws 11, and the halogen bulb 3 is inserted into the fixing ring 10 together with the socket 12 and rotated to thereby obtain the halogen bulb. 3 is fixed to the reflector 4 together with the socket 12 by a bayonet mechanism, and the halogen light bulb 3 faces the inside of the reflector 4.

  The reflector 4 has a substantially spheroidal reflection surface 4b with the optical axis x as a central axis, and the reflection surface 4b is subjected to a reflection process such as aluminum vapor deposition. A lens holder 8 holding the projection lens 2 and the first shade 5 are attached to the front surface of the reflector 4.

  The first shade 5 forms a low beam light distribution pattern by shielding a part of the light emitted from the halogen bulb 3 and reflected by the reflecting surface 4b of the reflector 4 toward the front of the vehicle. A frame-shaped flat resin portion 5A; It is comprised with the plate-shaped metal part 5B which covers the lower half part of the opening window 5a of this resin part 5A.

  The second shade 6 is formed by bending a metal plate in a laterally "<" shape when viewed from the side, and reflects a part of the light reflected toward the front of the vehicle by the reflector 4 to the front and upward. This is for forming an overhead light distribution pattern to be irradiated toward the surface. The second shade 6 has a flat reflecting portion 6A inclined obliquely downward toward the front of the vehicle, and a mounting portion 6B extending vertically downward from the rear end of the reflecting portion 6A. In a state where the reflection portion 6A is placed on the assembly fixing portion 13 formed integrally with the mounting portion 6B, the fixing portion 13 is fixed to the assembly fixing portion 13 with a screw 14 inserted through the attachment portion 6B. The surface of the reflection 6A portion of the second shade 6 is subjected to a reflection process such as aluminum vapor deposition.

  Here, the detail of the assembly fixing structure of the 2nd shade 6 is demonstrated below based on FIGS.

  FIG. 3 is a front view of the lens holder, FIG. 4 is a front perspective view showing how to attach the second shade to the lens holder, and FIG. 5 is a rear perspective view showing how to attach the second shade to the lens holder. 6 is a rear perspective view of the lens holder to which the second shade is fixed, and FIG. 7 is a front view of the lens holder to which the second shade is fixed.

  The triangular block-shaped assembly fixing part 13 is integrally formed at the lower part in the lens holder 8, and the upper surface of the assembly fixing part 13 is along the inclination of the reflection part 6 </ b> A of the second shade 6. An inclined surface that is inclined obliquely toward the front of the vehicle is configured, and two left and right portions of the reflecting portion 6A of the second shade 6 are supported on the left and right sides of the inclined surface as shown in FIGS. A parallel rib-shaped (rail-shaped) support portion 13a is formed along the front-rear direction. FIG. As shown in FIGS. 4 and 7, a receiving portion 13 b having a groove for receiving the front end portion of the second shade 6 is integrally formed in the center in the width direction of the top end of the assembly fixing portion 13.

  As shown in FIG. 5, a boss 13A is formed at the center in the width direction of the back surface of the assembly fixing portion 13 of the lens holder 8, and a screw hole 13c is formed in the boss 13A. Positioning protrusions 13d are formed on the left and right sides of the boss 13A on the back surface of the assembly fixing portion 13, respectively.

  By the way, as shown in FIG. 5, a circular hole 6a is formed in the central part of the vertical attachment part 6B of the second shade 6 (a part corresponding to the screw hole 13c formed in the boss 13A of the assembly fixing part 13). In addition, rectangular engagement holes 6b are formed on the left and right sides thereof (locations corresponding to the left and right positioning protrusions 13d of the assembly fixing portion 13). In addition, a gripping portion (grip) 6c that is bent at a right angle is integrally formed at the lower end in the width direction of the attachment portion 6B of the second shade 6.

  Thus, the second shade 6 is assembled obliquely (in the direction of the arrows in FIGS. 4 and 5) from the rear with respect to the assembly fixing portion 13 of the lens holder 8 with the gripping portion 6c being gripped. In other words, the second shade 6 has the reflection portion 6A placed on the support portion 13a formed parallel to the left and right of the upper surface of the assembly fixing portion 13, and the front end of the second shade 6 is received by the assembly fixing portion 13. It is inserted forward until it is received by the part 13b. Then, as shown in FIG. 6, the left and right positioning projections 13 d formed on the back surface of the assembly fixing portion 13 engage with the left and right engagement holes 6 b formed in the attachment portion 6 </ b> B of the second shade 6. The second shade 6 is accurately positioned with respect to the assembly fixing portion 13 by the engagement of the left and right positioning projections 13d with the left and right engagement holes 6b and the reception by the receiving portion 13b at the front end. As described above, when the second shade 6 is positioned with respect to the assembly fixing portion 13, the circular shade 6 a formed in the attachment portion 6 </ b> B of the second shade 2 and the boss 13 </ b> A of the assembly fixing portion 13 are formed. Since the screw hole 13c (see FIG. 5) matches, as shown in FIG. 5, the screw 14 is passed through the circular hole 6a of the second shade 6, and this screw 14 is formed on the boss 13A of the assembly fixing portion 13. The second shade 6 is securely fixed to the assembly fixing portion 13 of the lens holder 8 as shown in FIG. 7 by being screwed into the screw hole 13c.

  As described above, in the present embodiment, the second shade 6 can be placed on the assembly fixing portion 13 formed inside the lens holder 8 and can be fixed with high accuracy and reliability. Even if the shade 6 receives vibration or impact, the posture thereof does not change, and a desired overhead light distribution pattern can be stably formed by the second shade 6. In this case, since the two right and left portions of the reflecting portion 6A of the second shade 6 are supported by the parallel rib-shaped support portions 13a of the assembly fixing portion 13, the posture of the reflecting portion 6A of the second shade 6 is also affected by vibration and impact. Does not change.

  In the present embodiment, since the front end portion of the second shade 6 is received by the receiving portion 13b of the assembly fixing portion 13, the assemblability of the second shade 6 is improved and the second shade 6 is assembled. It is more securely fixed to the attaching portion 13. Then, the second shade 6 is received by engaging the positioning projection 13d of the assembly fixing portion 13 with the engagement hole 6b of the second shade 6 and receiving the front end portion of the second shade 6 by the receiving portion 13b of the assembly fixing portion 13. 6 is positioned and fixed to the assembly fixing portion 13 with high accuracy.

  Furthermore, in the present embodiment, since the second shade 6 is made of a metal plate that is resistant to heat, the heat collected by the projection lens 2 is blocked by the second shade 6, so that the peripheral resin parts are melted and the like. The occurrence of defects can be prevented.

DESCRIPTION OF SYMBOLS 1 Projector lamp for vehicles 2 Projection lens 3 Halogen light bulb 4 Reflector 5 1st shade 6 2nd shade 6A Reflective part of 2nd shade 6B Attachment part of 2nd shade 6a Circular hole of 2nd shade 6b Engagement hole of 2nd shade 8 Lens holder 13 Assembly fixing portion 13a Assembly fixing portion support portion 13b Assembly fixing portion receiving portion 13c Assembly fixing portion screw hole 13d Assembly fixing portion positioning projection 14 Screw x Optical axis

Claims (5)

A light source, a reflector that reflects light emitted from the light source, a projection lens that projects light reflected by the reflector toward the front of the vehicle, a lens holder that holds the projection lens, the projection lens in the vehicle front-rear direction, and the A first shade disposed between the light source and forming a low beam light distribution pattern; and a second shade disposed between the projection lens and the first shade in the vehicle longitudinal direction to form an overhead light distribution pattern. In a vehicle projector lamp configured to include:
A vehicle projector lamp, wherein an assembly fixing part is formed inside the lens holder, and the second shade is placed on the assembly fixing part and fixed.   2. The vehicle projector lamp according to claim 1, wherein the assembly fixing portion has parallel rib-shaped support portions for supporting two left and right portions of the second shade.   3. The vehicle projector lamp according to claim 1, wherein the assembly fixing portion includes a receiving portion that receives a front end portion of the second shade. 4.   A plurality of positioning protrusions are formed on the assembly fixing portion, a plurality of engagement holes are formed on the second shade, the engagement of the positioning protrusions with the engagement holes, and the second shade front end by the receiving portion 4. The vehicle projector lamp according to claim 3, wherein the second shade is positioned with respect to the assembly fixing portion by receiving the portion. The vehicle projector lamp according to claim 1, wherein the second shade is made of a metal plate.

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