JP6265341B2 - Light distribution adjusting device for vehicle lamp - Google Patents

Description

  The present invention mainly relates to a light distribution adjusting device for a vehicle lamp used for a vehicle headlamp, a fog lamp, and the like. More specifically, the present invention replaces a conventional halogen bulb or incandescent bulb with an LED bulb. The present invention relates to a light distribution adjusting device for a vehicular lamp that can be easily adjusted while checking light distribution characteristics.

There has been proposed an automotive lamp capable of positioning the irradiation optical axis of the LED of the LED bulb 43 intersecting with the mounting posture of the vehicle-mounted socket with a wide range of freedom (Patent Document 1).
As shown in FIG. 6, the automobile lamp described in Patent Document 1 has a fitting plate 17 fixedly fitted inside the base body 10, and the fitting plate 17 has a cylindrical portion 20 formed at the center. In addition, a plurality of positioning holes 19 are formed in a circular arc shape at predetermined intervals at positions off the center. A disc portion 16 is in contact with a side surface of the fitting plate 17, and a pin 18 provided on the disc portion 16 is fitted in the positioning hole 19. A spring 21 and a screw 22 are provided inside the cylindrical portion 20, and the disc portion 16 and the fitting plate 17 are in close contact with each other by the force of the spring 21. An LED attachment portion 11 is provided integrally with the disk portion 16, and a plurality of LEDs 14 are attached to the outer periphery of the LED attachment portion 11. The outer periphery of the LED mounting portion 11 is protected by the light transmitting cylinder 12, and the light of the LED 14 is reflected by the reflector portion 15 below the inner surface of the light transmitting cylinder 12, and direct light and reflected light are emitted to the outside. The end portion of the light-transmitting cylinder 12 is covered with a lid 13 having a lens 24 formed therein.

  In such a configuration, in order to adjust the light distribution of the LED 14 in the LED bulb 43, when the transparent cylinder 12 is pulled out against the spring 21 together with the disc portion 16, the pin 18 is removed from the positioning hole 19, When the LED mounting portion 11 can be rotated and the light distribution is adjusted by the rotation of the LED mounting portion 11 and the hand is released at the adjusted position, the pin 18 is fitted into the other positioning hole 19 at that position. Adjusted to the light distribution.

  The example shown in FIG. 7 is also known conventionally. In this example, an LED mounting portion 11 is integrally provided at the tip of the base body 10, and an LED 14 is mounted on both sides of the LED mounting portion 11 to constitute an LED bulb 43. A base 25 is fitted into the cylindrical portion 28 at an approximately intermediate position in the LED bulb 43, and the base 25 is fixed to the cylindrical portion 28 with a screw 26 screwed in from the outer surface. As shown in FIGS. 3 (a) and 3 (b), the base 25 is provided with three locking projections 29 on the outer periphery, and these locking projections 29 are engaged with the inner peripheral portion of the reflector portion 15. When they are inserted into the stop protrusions 30 and twisted together, they are combined. 27 is a rubber packing.

  In such a configuration, the light distribution position by the LED 14 of the LED bulb 43 is predicted, and the positions of the base 25 and the cylindrical portion 28 are determined and fixed by the screws 26. The position of the LED 14 is determined, and the base 25 is fitted and fixed to the reflector portion 15 as shown in FIGS. 3A and 3B, and the light distribution is observed. If the left and right light distributions at this time are shifted as indicated by A and B in FIG. 4A and the desired light distribution such as horizontal is not obtained, the fixing of the base 25 and the reflector unit 15 is released and the LED bulb 43 is released. The screw 26 is loosened and the positions of the base 25 and the cylindrical portion 28 are adjusted. Since this adjustment cannot be performed while viewing the light distribution, the above process is repeated several times until the desired light distribution such as horizontal is achieved as shown in FIG.

Utility Model Registration No. 3137871

  In the LED bulb 43 shown in FIG. 6 and also in the LED 14 shown in FIG. 7, the light distribution cannot be adjusted while the LED 14 is housed in the reflector portion 15. Therefore, LED14 is taken out from the reflector part 15, light distribution is estimated and adjusted, and after this adjustment, it attaches to the reflector part 15 again and inspects light distribution. Therefore, it is necessary to repeat the process of attaching the LED 14 to the reflector unit 15 after adjustment, removing and adjusting if the adjustment is inconvenient, and attaching the LED 14 to the reflector unit 15 again, and the adjustment process is troublesome. There was a problem.

  An object of the present invention is to enable adjustment of light distribution while an LED bulb is attached to a reflector portion.

The present invention relates to a light distribution adjusting device for a vehicle lamp in which an LED bulb 43 is attached to a reflector portion 15 by a base 25 and the light distribution is adjusted by the direction of rotation of the LED bulb 43.
The LED bulb 43 includes an LED mounting portion 11 located inside the reflector portion 15, a cylindrical portion 28 that is integral with the LED mounting portion 11 and that is rotatably fitted to the base 25, and The LED main body 10 is fixed to the opposite side of the LED mounting portion 11 and includes a screw hole 32 and a fixing screw 33 for fixing the LED bulb 43 to the position exposed to the outside from the reflector portion 15 after adjusting the light distribution. A light distribution adjusting device for a vehicle lamp characterized by being provided.

  The positions where the screw holes 32 and the fixing screws 33 for fixing after the light distribution adjustment are provided can be provided on the base body 10 exposed to the outside from the reflector portion 15. More specifically, the cylindrical portion 28 forms a large diameter portion 28a, a medium diameter portion 28b, and a small diameter portion 28c. After the base 25 is rotatably fitted to the medium diameter portion 28b, the small diameter portion 28c is formed. The base body 10 is connected to the base body 10, a screw hole 32 is provided in the axial direction of the LED bulb 43 from the end surface of the base body 10, and a fixing screw 33 is screwed into the screw hole 32 to adjust the light distribution. 28 b is fixed to the base 25.

  The positions where the screw holes 32 and the fixing screws 33 for fixing after the light distribution adjustment are provided are not limited to the case where they are provided in the base body 10, but can be provided in the base 25 exposed to the outside from the reflector portion 15. More specifically, the cylindrical portion 28 forms a large diameter portion 28a, a medium diameter portion 28b, and a small diameter portion 28c. After the base 25 is rotatably fitted to the medium diameter portion 28b, the small diameter portion 28c is formed. The base body 10 is connected to the base 25, and a screw hole 32 is provided in a direction substantially perpendicular to the axial direction of the LED bulb 43 from the side surface of the base 25, and a fixing screw 33 is screwed into the screw hole 32 to adjust the light distribution. The diameter portion 28 b is fixed to the base 25.

According to invention of Claim 1,
In the light distribution adjusting device for a vehicle lamp in which an LED bulb is attached to the reflector portion with a base and the light distribution is adjusted by the direction of rotation of the LED bulb.
The LED bulb includes an LED mounting portion located inside the reflector portion, a cylindrical portion that is integral with the LED mounting portion and rotatably fitted to the base, and is opposite to the LED mounting portion in the cylindrical portion. A fixed base body , provided with a screw hole and a fixing screw for fixing after light distribution adjustment at a position exposed to the outside from the reflector portion in the LED bulb;
The cylindrical portion includes a large diameter portion, a medium diameter portion, and a small diameter portion. After the base is rotatably fitted to the medium diameter portion, the base body is connected to the small diameter portion, and the base body said threaded hole in the axial direction of the LED bulb from the end face is provided, since the medium diameter section after light distribution adjustment screwed the fixing screws into the screw holes so as to secure the cap, a reflector and LED bulb Adjust the light distribution by loosening the fixing screw and fitting the cylindrical part of the LED bulb to the base and rotating it to adjust the light distribution, and tightening the fixing screw after the adjustment. be able to.
Also, when attaching the LED bulb to the base, if the base part is connected to the small diameter part by fitting the inner diameter part of the cylindrical part into the base, the LED bulb can be rotated without removing it from the base, and the light distribution can be adjusted. If the fixing screw is tightened, it can be fixed to the base. This is particularly suitable when there is a gap behind the base body but there is no gap on the outer periphery of the base.

According to invention of Claim 2,
In the light distribution adjusting device for a vehicle lamp in which an LED bulb is attached to the reflector portion with a base and the light distribution is adjusted by the direction of rotation of the LED bulb.
The LED bulb includes an LED mounting portion located inside the reflector portion, a cylindrical portion that is integral with the LED mounting portion and rotatably fitted to the base, and is opposite to the LED mounting portion in the cylindrical portion. A fixed base body , provided with a screw hole and a fixing screw for fixing after light distribution adjustment at a position exposed to the outside from the reflector portion in the LED bulb;
The cylindrical portion includes a large-diameter portion, a medium-diameter portion, and a small-diameter portion, and after the base is rotatably fitted to the medium-diameter portion, the base body is connected to the small-diameter portion, and a side surface of the base said threaded hole in the axial direction and a direction substantially perpendicular of the LED bulb from provided, since the medium diameter section after light distribution adjustment screwed the fixing screws into the screw holes so as to secure the ferrule, When the LED bulb is attached to the base, the middle diameter part of the cylindrical part is fitted into the base and the base body is connected to the small diameter part, so that the LED bulb can be rotated without removing it from the base, and the light distribution can be adjusted. If the screw is tightened, it can be fixed to the base. It is particularly suitable when there is a gap on the outer periphery of the base and there is no gap behind the base body.

It is a longitudinal cross-sectional view of the light distribution adjustment apparatus of the vehicle lamp which shows Example 1 of this invention. It is the disassembled perspective view which excluded the reflector and lens in FIG. FIG. 2 shows a combined state of an LED bulb and a reflector, where (a) is a front view before combining, and (b) is a front view after combining. (A) is an unadjusted light distribution diagram of the LED bulb, and (b) is a light distribution diagram after adjustment of the LED bulb. It is sectional drawing of the light distribution adjustment apparatus of the vehicle lamp which shows Example 2 of this invention. It is sectional drawing of the light distribution adjustment apparatus of the conventional vehicle lamp. It is sectional drawing which shows the other example of the past.

The present invention relates to a light distribution adjusting device for a vehicle lamp in which an LED bulb 43 is attached to a reflector portion 15 by a base 25 and the light distribution is adjusted by the direction of rotation of the LED bulb 43.
The LED bulb 43 includes an LED mounting portion 11 located inside the reflector portion 15, a cylindrical portion 28 that is integral with the LED mounting portion 11 and that is rotatably fitted to the base 25, and The LED main body 10 is fixed to the opposite side of the LED mounting portion 11 and includes a screw hole 32 and a fixing screw 33 for fixing the LED bulb 43 to the position exposed to the outside from the reflector portion 15 after adjusting the light distribution. It is provided.

  The screw hole 32 and the fixing screw 33 for fixing after adjusting the light distribution are provided in the base body 10 exposed to the outside from the reflector portion 15. More specifically, the cylindrical portion 28 includes a large-diameter portion 28a, a medium-diameter portion 28b, and a small-diameter portion 28c. After the base 25 is rotatably fitted to the medium-diameter portion 28b, the cylindrical portion 28 is attached to the small-diameter portion 28c. The base body 10 is connected, and a screw hole 32 is provided in the axial direction of the LED bulb 43 from the end surface of the base body 10. A fixing screw 33 is screwed into the screw hole 32 to adjust the light distribution, and the middle diameter portion 28 b is connected to the base It is characterized by being fixed to 25.

  The screw hole 32 and the fixing screw 33 for fixing after the light distribution adjustment are provided in the base 25 exposed to the outside from the reflector portion 15. More specifically, the cylindrical portion 28 includes a large-diameter portion 28a, a medium-diameter portion 28b, and a small-diameter portion 28c. After the base 25 is rotatably fitted to the medium-diameter portion 28b, the cylindrical portion 28 is attached to the small-diameter portion 28c. The base body 10 is connected, a screw hole 32 is provided in a direction substantially orthogonal to the axial direction of the LED bulb 43 from the side surface of the base 25, and a fixing screw 33 is screwed into the screw hole 32 to adjust the light distribution. 28 b is fixed to the base 25.

Example 1 of a light distribution adjusting device for a vehicle lamp according to the present invention will be described with reference to FIGS.
In the light distribution adjusting device for a vehicular lamp according to the present invention, the LED bulb 43, the base 25, and the reflector portion 15 are main components. The LED bulb 43 includes an LED mounting portion 11, a cylindrical portion 28, and a base body 10. The LED mounting portion 11 includes a mounting plate portion 11a and a light shielding portion 11b, and one to a plurality of LEDs 14 are mounted on both sides of the mounting plate portion 11a. The LED bulb 43 is a conventional halogen bulb or incandescent lamp. It is an alternative to valves.
The LED mounting portion 11 is integrally provided with a cylindrical portion 28. The cylindrical portion 28 is sequentially provided on the large diameter portion 28a, the medium diameter portion 28b, and the small diameter portion 28c, and the large diameter portion 28a and the medium diameter portion 28b. A step portion 35 and an O-ring 34 are provided between the intermediate diameter portion 28b and the small diameter portion 28c. A lead wire connected to the LED 14 passes through the cylindrical portion 28. A through hole 38 is provided. The outer periphery of the LED mounting portion 11 is covered with a transparent cylinder 12 such as colorless and transparent as necessary, and a lid 37 is screwed and fixed to the light shielding portion 11b.

The base 25 is provided with a fitting hole 40 that fits the middle diameter portion 28b at the center, and a locking projection piece 29 having a central angle of 120 degrees and an engaging groove portion 41 are provided on the outer peripheral portion. In addition, the rubber packing 27 is fitted.
The base body 10 is provided with a fitting hole 31 for fitting with the small diameter portion 28c at the center, a cooling fin 39 on the outer periphery, and two screw holes 32 penetrating from the rear. A fixing screw 33 is screwed into the screw hole 32.

  As shown in FIG. 3, locking protrusions 30 that are fitted into the engaging groove portions 41 of the base 25 are provided at intervals of 120 degrees on the inner peripheral portion of the reflector portion 15, and the reflector portion 15. A lens 24 is fitted into the front end of the lens.

In such a configuration, the base 25 is rotatably fitted to the middle diameter portion 28 b of the cylindrical portion 28 of the LED bulb 43. The base 25 is tightly adhered to the medium diameter portion 28b by the O-ring 34, the front end surface of the base 25 is in contact with the step portion 35 between the large diameter portion 28a and the medium diameter portion 28b, and the rear end surface is the medium diameter. It coincides with the stepped portion 36 between the portion 28b and the small diameter portion 28c. Further, the small diameter portion 28c is press-fitted and fixed to the fitting hole 31 of the base body 10 with the adhesive layer 42 interposed therebetween.
After the cylindrical portion 28 and the base 25 are assembled so as to be rotatable in this manner, the locking protrusions 29 of the base 25 and the locking protrusions 30 of the reflector portion 15 are attached to the rubber packing 27 as shown in FIG. When the base 25 and the reflector portion 15 are rotationally engaged with each other by press-fitting against each other, the LED bulb 43 and the reflector portion 15 are fixedly attached to each other as shown in FIG.

After the LED bulb 43 and the reflector portion 15 are fixedly attached to each other, the LED bulb 43 is turned on to test the light distribution.
As a result, for example, the light distribution by the left and right LEDs 14 is deviated as indicated by A and B in FIG.
While watching this light distribution, loosening the fixing screw 33 and rotating the base main body 10 little by little to the left or right, the base 25 is fixed to the reflector portion 15, but the LED bulb 43 is connected to the base main body 10 and the cylinder. Since the portion 28 and the LED mounting portion 11 are integrally provided, the LED mounting portion 11 is also rotated to the left or right by the rotation of the base body 10, and the light distribution is adjusted. When A and B are adjusted on the same line as shown in FIG. 4B, the fixing screw 33 is screwed into the screw hole 32. The front end surface of the base 25 is closely attached and fixed to the step portion 35 of the cylindrical portion 28 integral with the base body 10. Thus, the light distribution can be adjusted without removing the LED bulb 43 from the reflector portion 15.

  In the first embodiment, the screw hole 32 is formed in the axial direction of the LED bulb 43 from the end surface of the base main body 10, the fixing screw 33 is screwed, and the side surface of the base 25 is pressure-bonded. However, the present invention is not limited to this example. As shown in FIG. 5, in the second embodiment, when there is a gap for operating the screw on the outer periphery of the base 25, the screw is screwed in a direction perpendicular to the axis of the LED bulb 43. A hole 32 may be provided, and a fixing screw 33 may be screwed into the screw hole 32 and fixed to the outer peripheral surface of the cylindrical portion 28. In such a configuration, the base 25 is fixed to the reflector unit 15 by loosening the fixing screw 33 and rotating the base body 10 little by little to the left or right while watching the light distribution, as in the first embodiment. However, since the base main body 10, the cylindrical portion 28, and the LED mounting portion 11 constituting the LED bulb 43 are integrally provided, the rotation of the base main body 10 causes the LWD 14 of the LED mounting portion 11 to rotate to the left or right. When the light is adjusted and A and B are adjusted on the same line as shown in FIG. 4B, the fixing screw 33 is screwed into the screw hole 32. The front end surface of the base 25 is closely attached and fixed to the step portion 35 of the cylindrical portion 28 integral with the base body 10. Thus, the light distribution can be adjusted without removing the LED bulb 43 from the reflector portion 15.

  In the first and second embodiments, as shown in FIG. 4B, the left and right light distributions A and B are adjusted to be substantially horizontal, but depending on the purpose of use, the left and right light distributions A and B are horizontal. Of course, the adjustment may be made so that it does not occur.

  DESCRIPTION OF SYMBOLS 10 ... Base main body, 11 ... LED attaching part, 12 ... Translucent cylinder, 13 ... Cover body, 14 ... LED, 15 ... Reflector part, 16 ... Disc part, 17 ... Fitting board, 18 ... Pin, 19 ... Positioning Hole: 20 ... Cylinder part, 21 ... Spring, 22 ... Screw, 23 ... Heat radiation hole, 24 ... Lens, 25 ... Base, 26 ... Screw, 27 ... Rubber packing, 28 ... Cylinder part, 29 ... Locking protrusion, 30 ...... Locking protrusion, 31, fitting hole, 32, screw hole, 33, fixing screw, 34, O-ring, 35, stepped portion, 36, stepped portion, 37, lid, 38, through-hole, 39, cooling Fins, 40 ... fitting holes, 41 ... engagement grooves, 42 ... adhesive layer, 43 ... LED bulb.

Claims (2)

In the light distribution adjusting device for a vehicle lamp in which an LED bulb is attached to the reflector portion with a base and the light distribution is adjusted by the direction of rotation of the LED bulb.
The LED bulb includes an LED mounting portion located inside the reflector portion, a cylindrical portion that is integral with the LED mounting portion and rotatably fitted to the base, and is opposite to the LED mounting portion in the cylindrical portion. A fixed base body , provided with a screw hole and a fixing screw for fixing after light distribution adjustment at a position exposed to the outside from the reflector portion in the LED bulb;
The cylindrical portion includes a large diameter portion, a medium diameter portion, and a small diameter portion. After the base is rotatably fitted to the medium diameter portion, the base body is connected to the small diameter portion, and the base body said threaded hole in the axial direction in the LED bulb from the end faces provided, characterized in that the middle diameter portion after the light distribution adjustment screwed the fixing screws into the screw holes so as to secure the ferrule vehicle Light distribution adjustment device for lighting equipment. In the light distribution adjusting device for a vehicle lamp in which an LED bulb is attached to the reflector portion with a base and the light distribution is adjusted by the direction of rotation of the LED bulb.
The LED bulb includes an LED mounting portion located inside the reflector portion, a cylindrical portion that is integral with the LED mounting portion and rotatably fitted to the base, and is opposite to the LED mounting portion in the cylindrical portion. A fixed base body , provided with a screw hole and a fixing screw for fixing after light distribution adjustment at a position exposed to the outside from the reflector portion in the LED bulb;
The cylindrical portion includes a large-diameter portion, a medium-diameter portion, and a small-diameter portion, and after the base is rotatably fitted to the medium-diameter portion, the base body is connected to the small-diameter portion, and a side surface of the base It said the LED the threaded hole in the axial direction in a direction substantially perpendicular to the valve is provided, to the middle diameter portion after the light distribution adjustment screwed the fixing screws into the screw holes so as to secure the cap from A light distribution adjusting device for a vehicle lamp characterized by

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