CN211083948U - Lamp unit - Google Patents

Abstract

The utility model provides a lamp unit, its lens support that design nature when making openly observe lamp unit improves. The lamp unit is provided with a main body part (33) on which the first lens (31) and the second lens (32) are mounted, and a fastening part (34) for fastening the main body part (33) to the lamp unit (2). The fastening section (34) is configured not to protrude from the main body section (33) when the lamp unit (2) is viewed from the front. In addition, the fastening portion (34) is provided with a screw hole (8j) through which a screw (50j) can be inserted. The screw (50j) is arranged such that, in a state in which the screw (50j) is tightened, the central axis of the screw (50j) is parallel to the lens surface (32a) of the second lens (32).

Description

Lamp unit

Technical Field

The present invention relates to a lamp unit including a rotating reflector, particularly a lens holder in consideration of the design of the front surface of the lamp.

Background

In recent years, a technique related to a blade scanning system is known in which a rotating reflector having a reflecting surface that rotates around a rotating shaft reflects direct light emitted from a light source unit to project a complicated light distribution pattern in front of a lamp. For example, patent document 1 describes a technique for irradiating the front of a vehicle over a wide range using a rotating reflector. Patent document 2 describes a technique for reducing a change in luminance near a light/dark boundary by overlapping light distribution patterns formed by using a rotating reflector in a staggered manner.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-067523

Patent document 2: japanese patent laid-open publication No. 2018-073485

SUMMERY OF THE UTILITY MODEL

Problem to be solved by the utility model

However, in the lamp unit using the leaf-scan method, a lens is disposed in front of the lamp unit in order to overlap direct light from a light source and reflected light via a rotating reflector. Therefore, the lens portion is particularly noticeable in designing the lamp unit, and has a large influence on the design of the lamp unit.

However, in the case of using the conventional lens holder 68 as shown in fig. 9 (a), since the fastening portion 34 for fastening the screw to the support member 7 greatly protrudes to the side of the main body portion 33, there is a problem that the appearance of the lens portion is more visually recognized and the appearance of the lamp unit 62 is deteriorated when viewed from the front as shown in fig. 9 (b).

Therefore, an object of the present invention is to provide a lamp unit having a good appearance and including a lens holder configured such that a fastening portion is inconspicuous.

Means for solving the problems

In order to solve the above-described problems, a lamp unit according to the present invention includes a light emitting element, a substrate on which the light emitting element is mounted, a rotating reflector that rotates a reflection surface that reflects light of the light emitting element around a rotation axis, a rotating reflector housing that holds the rotating reflector, a lens that projects light reflected by the reflection surface to the front of the lamp, a lens holder that holds the lens, and a support member that supports the substrate, the rotating reflector and the lens holder, and is characterized in that the lens holder includes a main body portion that holds the lens, and a fastening portion that fastens the main body portion to the support member, and the fastening portion is erected toward the rear of the lamp with the main body portion as a base end, and is disposed at a position that is shielded by the lens and the main body portion when the lamp.

In this case, the lens holder may include a plurality of fastening portions and a substantially U-shaped reinforcing member that extends rearward of the lamp with one fastening portion and the other fastening portion as base ends. In this case, it is also preferable that the main body portion is formed in a substantially rectangular frame shape, and the fastening portion is disposed substantially at the center of the pair of long sides of the main body portion. Further preferably, the fastening portion is provided with a hole portion through which the rod-shaped fastening member is inserted, and the hole portion is opened so as to be parallel to the lens surface of the lens.

The substrate and the rotating reflector housing have holes through which rod-shaped fastening members can be inserted. In this case, the holes of the substrate and the rotating reflector housing are preferably opened in the same direction as the hole of the lens holder.

Further, the rotating reflector housing may be attached to a support member that supports the lens holder such that a rotation axis of the rotating reflector is not parallel to an optical axis of the lens, and a rib facing the rotating reflector housing may be provided upright on the fastening portion of the lens holder and the reinforcing member. In this case, the rib of the reinforcing member is preferably configured to have a height in the direction in which the rib is erected, smaller than that of the rib of the fastening portion.

Effect of the utility model

According to the present invention, since the fastening portion of the lens holder is erected toward the rear of the lamp using the main body portion as the base end, and the fastening portion of the lens holder is disposed at a position shielded by the lens and the main body portion when the lamp unit is viewed from the front, there is an excellent effect that the fastening portion becomes inconspicuous and the appearance of the lamp unit becomes excellent.

Drawings

Fig. 1 is a sectional view of a vehicular lamp equipped with a lamp unit representing one embodiment of the present invention.

Fig. 2 is a perspective view of the lamp unit as viewed from the front.

Fig. 3 is an expanded perspective view of the lamp unit.

Fig. 4 is a schematic view of a reflector assembly.

Fig. 5 (a) is a perspective view of the lens unit, and fig. 5 (b) is an expanded perspective view thereof.

Fig. 6 (a) is a front view of the lens holder, and fig. 6 (b) is a perspective view of a lamp unit on which the lens holder of fig. 6 (a) is mounted.

Fig. 7 (a) is a right side view of the lens holder, and fig. 7 (b) is a top view thereof.

Fig. 8 (a) is a perspective view as viewed from the bottom surface direction of the lens holder, and fig. 8 (b) is a schematic view showing a positional relationship between the lens unit and the reflector assembly in the lamp unit.

Fig. 9 (a) is a front view of a lens unit having a conventional configuration, and fig. 9 (b) is a perspective view of a lamp unit having the lens unit of fig. 9 (a) mounted thereon.

Description of the reference numerals

Vehicle lamp 1

2 Lamp unit

3 first light source unit

4 second light source unit

5 Reflector assembly

6 lens unit

7 support member

8 lens support

9 radiator

11 outer lens

12 Lamp body

13 Lamp chamber

14 projecting member

21. 22 light emitting element

23. 24 base plate

25 rotating reflector

26 Motor

27 control circuit board

29 Reflector casing

29b vertical wall

31 first lens

32 second lens

33 main body part

34 fastening part

35 reinforcing member

41 cover type lens (cover lens)

42 fixing member

50i, 50j, 50k screw

L1, L2 light

R rotating shaft

Detailed Description

Hereinafter, an embodiment in which the present invention is embodied as a lamp unit provided in a vehicle lamp will be described with reference to the drawings. In the drawings, the same reference numerals denote the same or similar components.

As shown in fig. 1 and 2, the lamp unit 2 of the present embodiment is disposed inside a lamp chamber 13 formed between an outer lens 11 and a lamp body 12 of the vehicle lamp 1. The lamp unit 2 is configured by a first light source unit 3, a second light source unit 4 (see fig. 3), a reflector assembly 5, and a lens unit 6. Further, a projecting member 14 that shields a part of the lamp unit 2 from the front of the lamp is provided inside the lamp chamber 13.

The lamp unit 2 further has a support member 7 that supports the first and second light source units 3 and 4, the reflector assembly 5, and the lens unit 6. The support member 7 includes a heat sink 9 for dissipating heat generated from the first light source unit 3 and the second light source unit 4 behind the mounting surface 7a of the first light source unit 3 and the mounting surface 7b (see fig. 3) of the second light source unit 4. The support member 7 is held by the lamp main body 12 by the aiming adjustment member 15.

The light L1 emitted from the first light source unit 3 passes through the first lens 31 and enters the second lens 32, while the light L2 emitted from the second light source unit 4 is reflected by the reflecting surface 25a of the rotating reflector 25 and enters the second lens 32, the light L1 of the first light source unit and the light L2 of the second light source unit entering the second lens 32 are projected in front of the lamp, and thus, the substrates 23 and 24 are arranged to be non-parallel so that the light L1 and the light L2 enter the second lens 32.

As shown in fig. 3, the first light source unit 3 and the second light source unit 4 are composed of light emitting elements 21 and 22 and substrates 23 and 24 on which the light emitting elements 21 and 22 are mounted. The second light source unit 4 includes a cover lens 41 through which light from the light emitting element 22 passes, and a fixing member 42 for fixing the cover lens 41 to the substrate 24.

The substrate 24, the fixing member 42, the lens holder 8, and the reflector housing 29 are provided with screw holes 24i, 42i, 8j, and 29k through which screws 50i, 50j, and 50k as rod-shaped fastening members can be inserted, respectively. Screw holes 24i, 42i, 8j, 29k open in the same direction toward support member 7. The lamp unit 2 is formed by inserting the screw 50i into each of the screw hole 24i and the screw hole 42i, inserting the screw 50j into the screw hole 8j, inserting the screw 50k into the screw hole 29k, and fastening the screws to the screw holes 7i, 7j, and 7k of the support member 7. In the lamp unit 2, screws 50i, 50j, 50k are arranged in parallel.

As shown in fig. 4, the reflector module 5 includes a rotating reflector 25 having a substantially divided disc-shaped reflecting surface 25a provided to be rotatable about a rotation axis R, a motor 26 for driving the rotating reflector 25, and a reflector housing 29 for holding the rotating reflector 25. The reflector housing 29 includes a standing wall 29b surrounding the outer periphery of the rotating reflector 25.

As shown in fig. 4 (b), the rotating reflector 25 is connected to a rotating shaft R at the center, and the rotating shaft R is connected to the motor 26 through a hole 29a opened in the bottom surface of the reflector housing 29. The motor 26 includes a yoke 26b that rotates when energized with the coil 26 a. A control circuit board 27 is disposed on the outer bottom surface of the reflector housing 29, and a control circuit for controlling the motor 26 is mounted on the control circuit board 27.

As shown in fig. 5, the lens unit 6 is constituted by a first lens 31 and a second lens 32, and a lens holder 8 holding the first lens 31 and the second lens 32. The lens holder 8 includes a main body 33 holding the first lens 31 and the second lens 31, a fastening portion 34 fastening the main body 33 to the support member 7 of the lamp unit 2, and a reinforcing member 35 connecting and reinforcing the plurality of fastening portions 34.

As shown in fig. 5 (b), the main body 33 includes a holding surface 33a for holding the first lens 31. The first lens 31 includes a second lens holding surface 31b for holding the second lens 32 on the back surface of the held surface 31a held by the body 33. The second lens 32 is held by the second lens holding surface 31b of the first lens 31 and the second lens holding surface 33b of the body portion 33.

As shown in fig. 6 (a), the main body 33 is formed in a substantially rectangular frame shape in front view, and includes a pair of long sides 33 c. Fastening portions 34 are disposed substantially at the centers of the pair of long sides 33 c.

Fig. 6 (a) is a front view of the lens holder 8. The body portion 33 is formed in a substantially rectangular frame shape and includes a pair of long sides 33 c. Fastening portions 34 are disposed substantially at the centers of the pair of long sides 33 c.

Here, in the conventional lens holder 68 (see fig. 9 (a)), the fastening portion 34 is disposed so as to protrude to the side of the lens, but in the present embodiment, the fastening portion 34 is disposed at a position that is difficult to see from the front. As a result, as shown in fig. 6 (b), the lamp unit 2 of the present invention has a smaller area of the lens portion in front view than the conventional lamp unit 62 (see fig. 9 (b)). The arrangement of the tightening part 34 will be described in detail below.

Fig. 7 (a) is a right side view of the lens holder 8. The fastening portion 34 is provided upright toward the rear of the lamp with the main body portion 33 as a base end, and the fastening portion 34 is disposed at a position shielded by the second lens 32 and the main body portion 33 when the lamp unit is viewed from the front. In this case, the tightening part 34 may be provided so as to be pushed out toward the central axis of the second lens 32 within a range that does not block the light beam incident on the second lens 32.

As shown in fig. 7 (a), the reinforcing member 35 is provided so as to extend rearward of the lamp with one fastening portion 34 and the other fastening portion 34 as base ends. The reinforcing member 35 is provided in a substantially U-shape surrounding three side surfaces of the fixing member 42 of the second light source unit 4 in the lamp unit 2 (see fig. 3).

As shown in fig. 7 (b), the fastening portion 34 includes a screw hole 8j through which a screw 50j is inserted. Screw hole 8j opens in a direction parallel to lens surface 32a of second lens 32. The central axis of the screw 50j is arranged so that the central axis of the screw 50j is parallel to the lens surface 32a of the second lens 32 in a state where the screw 50j is fastened to the support member 7.

Fig. 8 (a) is a perspective view of the lens holder 8 viewed from the bottom. The fastening portion 34 and the reinforcing member 35 are provided with ribs 34a and 35a, respectively. At this time, the rib of the reinforcing member 35 is set to have a height smaller than the rib 34a of the fastening portion 34.

Fig. 8 (b) shows a positional relationship between the lens unit 6 and the reflector assembly 5 in the lamp unit 2. The rotating reflector 25 is supported such that the rotation axis R and the optical axis of the second lens 32 are not parallel, and the ribs 34a and 35a are both provided upright toward the reflector housing 29. The rib 35a of the reinforcing member 35 is provided to have a height smaller than that of the rib 34a of the fastening portion 34, and the standing wall 29b of the reflector housing 29 is disposed at the position of the rib 35a of the reinforcing member 35 provided to be small. In this way, since the height of the rib 35a of the reinforcing member 35 is set smaller than the height of the rib 34a of the fastening portion 34, the reflector housing 29 and the reinforcing member 35 can be arranged close to each other without interfering with each other, and the lamp unit 2 can be downsized.

According to the lamp unit 2 configured as described above, the fastening portion 34 is arranged so as not to protrude from the second lens 32 and the main body portion 33 when the lamp unit 2 is viewed from the front, and therefore, the lamp unit 2 has an excellent effect of improving the appearance of the lamp unit 2. Further, since the lens holder 8 can be fastened in the same direction as the substrate 24 and the reflector housing 29, there is an effect that the labor for the assembly work can be saved. Further, by providing the reinforcing member 35, the fastening portion 34 can be prevented from being twisted when the screw 50j is fastened, and the reinforcing member 35 having a substantially U-shape can be engaged with the fixing member 42 after the screw fastening, thereby preventing the lens holder 8 from being loosened or removed.

The present invention is not limited to the above-described embodiments, and can be implemented by appropriately changing the shape and structure of each part without departing from the scope of the present invention.

Claims (6)

1. A lamp unit including a light emitting element, a substrate on which the light emitting element is mounted, a rotating reflector that rotates a reflection surface that reflects light of the light emitting element around a rotation axis, a rotating reflector housing that holds the rotating reflector, a lens that projects light reflected by the reflection surface to the front of a lamp, a lens holder that holds the lens, and a support member that supports the substrate, the rotating reflector, and the lens holder,

the lens holder includes a main body portion for holding the lens and a fastening portion for fastening the main body portion to the support member,

the fastening portion is provided upright toward the rear of the lamp with the main body portion as a base end, and is disposed at a position shielded by the lens and the main body portion when the lamp unit is viewed from the front.

2. The lamp unit according to claim 1, wherein the lens holder includes a plurality of the fastening portions, and a U-shaped reinforcing member that is provided so as to extend rearward of the lamp with one fastening portion and the other fastening portion as base ends.

3. The luminaire unit of claim 2,

the main body part is formed into a rectangular frame shape,

the fastening portion is disposed at the center of a pair of long sides of the main body portion.

4. A lamp unit as claimed in any one of the claims 1-3,

the fastening portion has a hole portion through which the rod-shaped fastening member is inserted,

the hole is opened in a direction parallel to the lens surface of the lens.

5. A lamp unit as claimed in any one of the claims 1-3,

the substrate and the rotating reflector housing are provided with a hole portion through which a rod-shaped fastening member can be inserted,

the holes of the substrate and the rotating reflector housing are opened in the same direction as the hole of the lens holder.

6. The luminaire unit of claim 2,

the rotating reflector housing and the lens holder are supported by the support member in a posture in which a rotation axis of the rotating reflector is not parallel to an optical axis of the lens,

the lens holder fastening portion and the reinforcing member include a rib portion provided to stand toward the rotating reflector housing,

the height of the rib of the reinforcing member in the direction of the upright arrangement is set smaller than the rib of the fastening portion.

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