JP7099195B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

Conventionally, there is known a vehicle lamp in which a lens holding portion in which a reflecting mirror is integrally formed is attached to a light source unit, and the lens holding portion is attached so as to hold the lens (see Patent Document 1).

JP-A-2017-54608

However, in the case of mounting the lens so as to hold the lens in the lens holding portion, in addition to the positional deviation of the lens holding portion with respect to the light source of the light source unit, the positional deviation of the lens with respect to the lens holding portion occurs, so that the position accuracy of the lens with respect to the light source occurs. There is a problem that it gets worse.

Further, in the case of the form in which the reflecting mirror is integrally provided with the lens holding portion, there is also a problem that the size becomes large as a whole.

On the other hand, a composite optical lens in which a shade portion and a reflector surface are integrally formed is used for the lens, and a leg portion for fixing is integrally formed in the composite optical lens to improve the position accuracy and reduce the size. It is conceivable to realize it and solve the above problems.

However, in the case of a composite optical lens, a reflector surface or the like is formed by using an outer surface other than the entrance surface and the exit surface of the composite optical lens, so that the legs should be provided so as not to affect the optical characteristics. Is important.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle lamp provided with an optical control member provided with legs so as not to affect the optical characteristics of the composite optical lens. And.

The present invention is grasped by the following configurations in order to achieve the above object.
(1) The vehicle lighting equipment of the present invention is a vehicle lighting equipment provided with a light source and an optical control member for controlling the light distribution from the light source, and the optical control member is a composite optical that performs the light distribution control. The composite optical lens includes a lens and a plurality of legs integrally formed with the composite optical lens, and the composite optical lens has an incident surface on which light is incident and an emission surface on which light incident from the incident surface is emitted to the front side. And a shade portion formed between the incident surface and the emitted surface, and the legs are connected to positions between the emitted surface of the composite optical lens and the top line of the shaded portion, respectively. There is.

(2) In the configuration of the above (1), the vehicle lamp is provided with a heat sink, and the legs are connected to a support portion whose one end is connected to the composite optical lens and to the other end side of the support portion. The heat sink includes a fixing portion for fixing the optical control member, and the heat sink includes a fixing mechanism provided corresponding to each of the fixing portions.

(3) In the configuration of (2) above, each of the fixing mechanisms includes a positioning pin for positioning the optical control member and a screw screw hole for screwing a screw for attaching the optical control member, respectively. The fixing portion includes a first through hole corresponding to the positioning pin and a second through hole corresponding to the screw screw hole, and the leg portion sandwiches the lens optical axis of the composite optical lens. The first through hole is formed in the fixed portion so that a straight line connecting the centers of the first through hole passes on the optical axis of the lens. The lens optical axis is provided so as to substantially coincide with the light emitting center of the light source.

(4) In the configuration of (3) above, the legs are provided in pairs so as to be connected to the side surfaces of the composite optical lens in the vehicle width direction.

(5) In the configuration of the above (3) or (4), the vehicle lighting equipment includes a light source device having the light source, and the light source device is provided with the light source and is located between the light source and the heat sink. The heat transfer member and the connector connection member include a connector connection member made of an insulating resin having an electric wiring for making an electrical connection between the light source and the external connector. The optical control member is provided with a through hole corresponding to the positioning pin and a through hole corresponding to the screw screw hole, and the optical control member is the screw with the leg portion installed on the connector connection member. Is fixed to the heat sink together with the light source device.

(6) In any one of the above (1) to (5) configurations, the composite optical lens is formed so that the center of gravity is located between the exit surface and the top line of the shade portion.

(7) In any one of the above (1) to (6) configurations, the optical control member includes a reinforcing portion connecting the legs formed so as to avoid the composite optical lens.

(8) In any one of the above (1) to (7) configurations, the composite optical lens is formed on the upper side of the incident surface side from the top line, and emits light forming a first diffused light distribution pattern. A first reflector surface that reflects toward the emission surface and a second reflector that reflects light formed on the lower side of the entrance surface side from the top line and forming a condensing light distribution pattern toward the emission surface. It has a face and.

(9) In any one of the above configurations (1) to (8), the shade portion has a front inclined surface inclined forward from the top line, and the composite optical lens has a front inclined surface. A reflective surface is formed that reflects a part of the direct light from the light source toward at least a part of the front inclined surface, is reflected by the reflecting surface, and is further reflected by the front inclined surface. Light is emitted from the emission surface as overhead light distribution.

(10) In any one of the above configurations (1) to (9), the shade portion has a rearward inclined surface inclined rearward from the apex line, and the composite optical lens has the said compound optical lens. It is provided with a light scattering portion formed in a portion where the light reflected by the rear inclined surface, which reflects the reflected light that is not planned to be controlled by the emission surface toward the emission surface, is directly irradiated. ..

According to the present invention, it is possible to provide a lamp for a vehicle provided with an optical control member provided with legs so as not to affect the optical characteristics of the composite optical lens.

It is a top view of the vehicle provided with the vehicle lamp of the embodiment which concerns on this invention. It is an exploded perspective view of the lamp unit of the embodiment which concerns on this invention. It is sectional drawing of the composite optical lens of embodiment which concerns on this invention. It is a perspective view of the composite optical lens which made the incident surface side of the embodiment of this invention visible. It is a perspective view of the composite optical lens which made the exit surface side of the embodiment of this invention visible. It is a figure for demonstrating the light scattering part of the embodiment which concerns on this invention. It is a perspective view of the optical control member of embodiment which concerns on this invention. It is a top view from the side view of the composite optical lens of the embodiment which concerns on this invention. It is a top view from the front view of the optical control member of the embodiment which concerns on this invention. It is a figure for demonstrating the case where the optical control member of embodiment which concerns on this invention is applied the force which shifts in the rotation direction.

Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.
The same elements are designated by the same numbers or reference numerals throughout the description of the embodiments.

Further, in the embodiments and the drawings, unless otherwise specified, "front" and "rear" indicate the "forward direction" and "reverse direction" of the vehicle 102, respectively, and are "up", "down", and "rear", respectively. “Left” and “right” indicate the directions seen from the driver riding in the vehicle 102, respectively.
Needless to say, "upper" and "lower" are also "upper" and "lower" in the vertical direction, and "left" and "right" are also "left" and "right" in the horizontal direction.

FIG. 1 is a plan view of a vehicle 102 provided with a vehicle lamp according to an embodiment of the present invention.
As shown in FIG. 1, the vehicle lighting fixtures of the embodiment according to the present invention are vehicle headlights (101L, 101R) provided on the left and right sides of the front side of the vehicle 102, respectively, and the following are simply for vehicles. Described as a lamp.

The vehicle lighting fixture of the present embodiment includes a housing (not shown) opened on the front side of the vehicle and an outer lens (not shown) attached to the housing so as to cover the opening, and is formed by the housing and the outer lens. A lamp unit 1 (see FIG. 2) and the like are arranged in the lamp chamber.

FIG. 2 is an exploded perspective view of the lamp unit 1 of the embodiment according to the present invention.
As shown in FIG. 2, the lamp unit 1 is arranged on a heat sink 10, a light source device 20 attached to the heat sink 10 and having a light source 22, and a light source device 20, and controls light distribution from the light source 22. It includes a control member 30 and.

(Heat sink 10)
The heat sink 10 is provided so as to extend from the back surface of the base portion 11 to the rear side of the base portion 11 on which the light source device 20 is arranged, the plurality of heat dissipation fins 12 arranged in the vehicle width direction, and the vertical direction of the base portion 11. It is provided on the center side (vertical direction in FIG. 2), and is provided with a fixing mechanism provided corresponding to the fixing portion 32B of each leg portion 32 of the optical control member 30 described later.

Each fixing mechanism includes a positioning pin 11A protruding forward from the base portion 11 and a screw screw hole 11B formed in the base portion 11 separated from the positioning pin 11A toward the center side in the vehicle width direction. , Is equipped.
The positioning pins 11A between the fixing mechanisms are located apart from each other in the vehicle width direction, and the positioning pins 11A between the fixing mechanisms (in this example, two positioning pins 11A (hereinafter, may be referred to as a pair of positioning pins 11A). )) And the screw screw hole 11B (in this example, the two screw screw holes 11B (hereinafter, may be referred to as a pair of screw screw holes 11B)) are located on the center side in the vertical direction of the base portion 11. At the position, they are provided so as to line up almost in a row in the vehicle width direction.
A pair of screws N are screwed and fixed to the pair of screw screw holes 11B so as to simultaneously fasten the light source device 20 and the optical control member 30, which will be described later.

Each of the heat radiating fins 12 extends vertically from the base portion 11 on one side in the vertical direction (upper side in FIG. 2), and extends in the vertical direction from the base portion 11 (upper portion in FIG. 2). However, the shape is such that the connection portion 23B of the light source device 20, which will be described later, is notched from the base portion 11 side to the rear side so as to accommodate the connection portion 23B.

In the present embodiment, the heat sink 10 is an aluminum die-cast heat sink 10 in which a base portion 11, a heat radiation fin 12, a positioning pin 11A, and the like are integrally molded, but the heat sink 10 is not limited to this, and is not limited to heat. It may be formed by using a metal or resin having high conductivity.

(Light source device 20)
The light source device 20 includes a heat transfer member 21, a light source 22 arranged on the heat transfer member 21, an opening 23A arranged on the heat transfer member 21 and provided at a position corresponding to the light source 22, and an external connector. It includes a connector connecting member 23 having a connecting portion 23B to be connected.

The connection portion 23B is located on one side in the vertical direction (upper side in FIG. 2) of the heat transfer member 21, and is provided so that a part of the connection portion 23B protrudes to the rear side of the heat transfer member 21. As mentioned, this protruding portion is located in a portion shaped like a notch on the rear side of the heat radiation fin 12.

In the present embodiment, the heat transfer member 21 provided with the light source 22 is positioned so as to be in contact with both of the light source 22 and the base portion 11 of the heat sink 10, and the heat generated by the light source 22 is quickly spread over a wide range. While diffusing, it efficiently transfers heat to the heat sink 10 to improve the cooling efficiency of the light source 22.

Therefore, in the present embodiment, an aluminum plate having an outer diameter larger than that of the light source 22 is used for the heat transfer member 21, but the material is not limited to aluminum and is other than aluminum having high thermal conductivity. It may be metal, resin, or the like.

The light source 22 includes a substrate 22A having a light emitting region 22B that transmits light, and a light emitting chip (not shown) that is arranged on the back side of the substrate 22A and emits light for causing the light emitting region 22B to emit light. In the embodiment, the LD light source (laser light source) in which the LD chip (laser diode chip) is used for the light emitting chip is used, but the LED light source (light emitting diode light source) in which the LED chip is used for the light emitting chip may be used.
The light source 22 (light emitting chip) of the present embodiment has a plane light emitting portion and has a Lambersian distribution or a similar one.

However, it is preferable to use an LD light source for the light source 22 because it is easier to reduce the size of the composite optical lens 31, which will be described later, when the LD light source is used as the light source 22 than when the LED light source is used.

The connector connecting member 23 is, for example, insert-molded using an electrically insulating resin having excellent heat resistance (also simply referred to as an insulating resin) for making an electrical connection between the light source 22 and the external connector. It is a member formed so as to incorporate an electric wiring (not shown) inside.

Then, one end side of the electrical wiring (not shown) is led out to the opening 23A to make an electrical connection with the light source 22, and the other end side of the electrical wiring (not shown) is led out to the connecting portion 23B. , Electrical connection with an external connector is made.
The connector connecting member 23 and the heat transfer member 21 are integrated by, for example, an adhesive or a fixing means such as a screw.

Further, the connector connecting member 23 does not necessarily have to be an electrically insulating resin, and a material other than the resin can be used as long as it is electrically insulating.
However, as will be described later, since the connector connecting member 23 serves as a heat insulating member that suppresses deterioration of the optical control member 30 due to heat, it is preferable to use a material having a low thermal conductivity, and it does not conduct electricity. As the resin, it is preferable to use an electrically insulating resin because the thermal conductivity is generally low.

Both the heat transfer member 21 and the connector connection member 23 have a pair of through holes 24A through which the positioning pins 11A formed at positions corresponding to the pair of positioning pins 11A provided on the base portion 11 are passed, and a base portion. It is provided with a pair of through holes 24B through which a screw N formed at a position corresponding to the screw screw hole 11B provided in 11 is passed, and the heat sink 10 is provided with a screw N in a state of being positioned by the positioning pin 11A. It can be fixed.

(Optical control member 30)
The optical control member 30 includes a composite optical lens 31 that controls light distribution from the light source 22, a pair of legs 32 integrally formed with the composite optical lens 31, and a leg portion 32 so as to avoid the composite optical lens 31. It is provided with a reinforcing portion 33 that connects the integrally formed leg portions 32.
The number of legs 32 is not limited to a pair (two), but may be three or more, and a plurality of legs 32 are provided so as to stably support the composite optical lens 31.

In the present embodiment, the optical control member 30 is made of a transparent resin (for example, acrylic resin or the like), and the composite optical lens 31, the leg portion 32, and the reinforcing portion 33 are integrally molded. The lens 31, the leg portion 32, and the reinforcing portion 33 will be described in more detail in this order.

[Composite optical lens 31]
FIG. 3 is a cross-sectional view of the composite optical lens 31, and is a cross-sectional view of a cross section cut in the vertical direction along the lens optical axis Z as viewed from the side surface side.
Note that FIG. 3 also shows the light source 22 schematically described.
Further, FIG. 4 is a perspective view of the composite optical lens 31 so that the incident surface 31B side of the present embodiment can be seen, and FIG. 5 is a perspective view of the composite optical lens 31 so that the exit surface 31A side of the present embodiment can be seen. be.

As shown in FIGS. 3 and 4, the composite optical lens 31 irradiates the incident surface 31B on which the light from the light source 22 (see FIG. 3) is incident and the light incident from the incident surface 31B on the front side. The lens is integrally formed with an exit surface 31A having a smooth curved surface protruding forward without any unevenness and a shade portion 31C formed between the incident surface 31B and the exit surface 31A.

It should be noted that, as in the present embodiment, by not forming irregularities such as prisms on the emission surface 31A, it is possible to suppress the occurrence of light streaks and unevenness, and form a low beam light distribution pattern that does not cause discomfort to the driver. can do.

The shade portion 31C is formed so as to form a substantially triangular recess inside the composite optical lens 31 from the lower side in the vertical direction at a position between the entrance surface 31B and the exit surface 31A of the composite optical lens 31. The position of the apex of the triangular depression is set to be the top line 31CA that matches the shape of the cut-off line.

The top line 31CA is formed so that the portion forming the upper side of the oblique cut-off line is located at the rear focal point or the vicinity of the rear focal point of the exit surface 31A.

The composite optical lens 31 is formed on the upper side (vertical direction upper side) of the incident surface 31B side from the top line 31CA of the shade portion 31C, and emits the light L1 forming the first diffused light distribution pattern of the low beam light distribution pattern. A semi-dome-shaped first reflector surface 31D with a free curved surface that reflects toward 31A and a condensing light distribution of a low beam light distribution pattern formed on the lower side (vertical direction lower side) of the incident surface 31B side from the top line 31CA. It is provided with a free-curved semi-dome-shaped second reflector surface 31E that reflects the light L2 forming the pattern toward the emission surface 31A, and as can be seen in FIG. 4, the first reflector surface 31D and the first reflector surface 31D. 2 The width in the vehicle width direction of the position adjacent to the reflector surface 31E is larger on the first reflector surface 31D, so that the first diffused light distribution pattern of the low beam light distribution pattern can be formed satisfactorily.

On the contrary, the width in the vehicle width direction at the position where the first reflector surface 31D and the second reflector surface 31E are adjacent to each other is smaller in the second reflector surface 31E, and the low beam light distribution pattern is satisfactorily increased by facilitating the high luminous intensity. It is possible to form a condensing light distribution pattern.
The front focal path of the basic optical path of the first reflector surface 31D and the second reflector surface 31E substantially coincides with the rear focal point of the exit surface 31A.

As described above, in the present embodiment, since the first diffused light distribution pattern and the focused light distribution pattern of the low beam light distribution pattern can be formed by one composite optical lens 31, the lamp unit 1 for forming the low beam light distribution pattern is provided. It is not necessary to install a large number of lamps, and it is possible to reduce the size of vehicle lighting equipment.
In the vicinity of the upper end of the cut-off line, the spectroscopic light of the condensed light distribution pattern having a slight yellow tint and the spectroscopic light having a bluish tint of the first diffused light distribution pattern are multiplexed, so that the spectral color can be relaxed.

On the other hand, in the present embodiment, the incident surface 31B has a concave shape whose overall shape is recessed inside the composite optical lens 31, and has a low beam light distribution pattern smaller than the first diffused light distribution pattern of the low beam light distribution pattern on the center side. It has a convex surface 31BA projecting to the outside of the composite optical lens 31 for incident light L3 forming a second diffused light distribution pattern (medium diffused light distribution pattern).

As shown in FIG. 4, the convex surface 31BA has a substantially rectangular outer diameter (square shape), and as shown in FIG. 3, the portion forming the upper side of the diagonal cut-off line of the top line 31CA or the diagonal of the top line 31CA. It is formed so that the front focal point is located near the portion forming the upper side of the cut-off line.

Since the light source 22 is located behind the convex surface 31BA so that the center of the convex surface 31BA and the light emitting center of the light source 22 substantially coincide with each other when viewed in the vehicle width direction and the vertical direction, the light incident from the convex surface 31BA is greatly refracted. It is possible to form a good medium-diffuse light distribution pattern by gently condensing light toward the portion forming the upper side of the diagonal cut-off line of the top line 31CA and further spreading gently from the front focal point toward the exit surface 31A. It has become like.

As described above, in the present embodiment, the second diffused light distribution pattern, which is a medium diffused light distribution pattern (medium diffused light distribution pattern), which is multiplexed with the focused light distribution pattern and the first diffused light distribution pattern, is also formed. Therefore, the luminous intensity distribution as a low beam light distribution pattern can be made better.

The incident surface 31B on the outside of the convex surface 31BA has a shape that spreads to the rear side, and the entire shape of the incident surface 31B has a concave shape that is recessed inside the composite optical lens 31, so that light is irradiated toward the front side. Considering the spread of the light of the light source 22 to be generated, the light can be incident on the composite optical lens 31 without waste.
The concave rear focus recessed inside the composite optical lens 31 having the entire shape of the incident surface 31B substantially coincides with the rear focal points of the first reflector surface 31D and the second reflector surface 31E, and their rear focal points are the same. , Almost coincides with the emission center of the light source 22.

By the way, if the light and darkness is too clear in the cut-off line of the low beam light distribution pattern, the visibility deteriorates. Therefore, in the present embodiment, as shown in FIG. 3, the emission surface 31A is set to the first diffused light distribution pattern. A part of the light L1 (the lower part in this example) is formed so as to be irradiated on the upper side of the cut-off line of the condensing light distribution pattern and the second diffusion light distribution pattern. ..

Specifically, the curvature of the lower side of the exit surface 31A is smoothly adjusted so that the light is irradiated upward by about 0.2 to 0.5 degrees with respect to the lens optical axis Z.

Therefore, light is also irradiated on the upper side of the cut-off line of the condensing light distribution pattern and the second diffusion light distribution pattern, and the sharpness of the cut-off line is appropriately lowered, so that the visibility can be improved.

Further, in the present embodiment, the composite optical lens 31 forms not only the low beam light distribution pattern but also the overhead light distribution.
Specifically, since the shade portion 31C is formed so as to form a substantially triangular recess inside the composite optical lens 31, the shade portion 31C is a front side inclined forward from the top line 31CA. It has an inclined surface 31CC.

Since the front inclined surface 31CC can be used to reflect light diagonally upward, in the present embodiment, a part of the direct light from the light source 22 is directed to the composite optical lens 31 at least one of the front inclined surfaces 31CC. To form the reflecting surface 31G that reflects toward the portion, the light L4 that is reflected by the reflecting surface 31G and further reflected by the front inclined surface 31CC is emitted from the emitting surface 31A as an overhead light distribution. ing.

Specifically, as shown in FIGS. 3 to 5, a part of the direct light from the light source 22 is placed above the position between the first reflector surface 31D of the composite optical lens 31 and the light scattering portion 31F described later. A reflecting surface 31G that reflects toward at least a part of the front inclined surface 31CC is formed.

In this embodiment, as shown in FIGS. 3 and 4, the angle of reflection toward the exit surface 31A is adjusted to the portion of the front inclined surface 31CC to which the light reflected by the reflecting surface 31G is irradiated. It is assumed that the reflection angle adjusting unit 31CCA is provided.

However, it is not an indispensable requirement that the front inclined surface 31CC is provided with the reflection angle adjusting portion 31CCA, and the light reflected by the reflecting surface 31G is applied to the emitting surface 31A at a reflection angle suitable for overhead light distribution. The inclined state of the entire front inclined surface 31CC may be set so as to be reflected toward the direction.

Further, since the first reflector surface 31D, the second reflector surface 31E, the front inclined surface 31CC (the reflection angle adjusting unit 31CCA alone may be sufficient), and the reflecting surface 31G are required to have a function of reflecting light, they reflect light. White or silver coloring may be applied so that the rate is high.

As in the present embodiment, the light source 22 is arranged so as to irradiate the light to the front side, and the composite optical lens 31 utilizes the spread of the light and diffuses the light distribution of the low beam light distribution pattern, which is the largest in the light spreading upward. A pattern (first diffused light distribution pattern) is formed, a condensed light distribution pattern of a low beam light distribution pattern is formed by the light spreading downward, and a medium diffused light distribution pattern (first diffused light distribution pattern) of the low beam light distribution pattern is formed by the light on the center side. 2 Diffuse light distribution pattern) is formed, so that not only a good low beam light distribution pattern can be formed without using a large number of lamp units 1, but also a part of the front inclined surface 31CC of the shade portion 31C can be formed. By forming the reflecting surface 31G that reflects light, overhead light distribution can also be formed.

By the way, in the composite optical lens 31, light that is not planned to be controlled by the light distribution surface 31A may be emitted to the front side from the light emission surface 31A of the composite optical lens 31, and in order to suppress such light irradiation. In the present embodiment, the composite optical lens 31 includes a light scattering unit 31F, and the light scattering unit 31F will be described in detail below.

FIG. 6 is a diagram for explaining the light scattering unit 31F, and is a cross-sectional view corresponding to FIG.
As shown in FIG. 6, since the shade portion 31C is formed so as to form a substantially triangular recess inside the composite optical lens 31, the shade portion 31C is inclined rearward from the top line 31CA. It has a rear inclined surface 31CB, and a part of the light reflected by the first reflector surface 31D and a part of the direct light from the light source 22 are reflected by the rear inclined surface 31CB. Then, a part of the reflected light is reflected on the upper surface on the front side of the top line 31CA, and is irradiated to the front side from the emission surface 31A.

Such light is light that is not planned to be light-distributed controlled by the emission surface 31A, and may become harmful light that is emitted to the inside of the lighting room or the vicinity of the vehicle.
That is, the portion where the light reflected by the rear inclined surface 31CB is directly irradiated is a portion that reflects the reflected light that is not planned to be controlled by the emission surface 31A toward the emission surface 31A. The light reflected by the portion may become harmful light when irradiated from the exit surface 31A.

Therefore, as shown in FIG. 6, the composite optical lens 31 is formed on the exit surface 31A side of the top line 31CA of the shade portion 31C, and the reflected light that is not planned to be light-distributed controlled by the emission surface 31A toward the emission surface 31A. It is assumed that the light scattering portion 31F formed in the portion reflecting the light is provided.

Specifically, the light scattering unit 31F is directly irradiated with the light reflected by the rear inclined surface 31CB, which reflects the reflected light that is not planned to be controlled by the emission surface 31A toward the emission surface 31A. It is formed in the portion of the composite optical lens 31, and as shown in FIG. 6, light is scattered, and most of the light becomes light L5 emitted from the light scattering unit 31F and is irradiated as harmful light. Is suppressed.
In this way, in order to surely suppress the light L5 emitted from the light scattering portion 31F from leaking to the outside, a cover is provided to cover the portion of the composite optical lens 31 excluding the incident surface 31B and the emitting surface 31A to block light. You may try to do it.

On the other hand, a part of the light scattered by the light scattering unit 31F is still the light L6 radiated from the exit surface 31A to the front side, but since the amount of the light L6 is significantly reduced, the light chamber or the room It does not cause any harm even if it is irradiated near the vehicle.

The light scattering unit 31F is assumed to have fine irregularities (for example, prisms) formed on the surface of the composite optical lens 31, but is not limited to this as long as it has a structure capable of efficiently scattering light.
Further, a light scattering portion may be provided on the rear inclined surface 31CB as well, and by doing so, the amount of light that may be irradiated to the lighting chamber or the vicinity of the vehicle can be further reduced.

As described above, in the present embodiment, the composite optical lens 31 is formed on the emission surface 31A side of the top line 31CA of the shade portion 31C, and the reflected light that is not planned to be light-distributed controlled by the emission surface 31A toward the emission surface 31A. Since the light scattering portion 31F formed in the portion reflecting the light is provided, the light that is not planned to be controlled by the emission surface 31A of the composite optical lens 31 is emitted to the front side from the emission surface 31A of the composite optical lens 31. This can be suppressed, and harmful light emitted to the interior of the lamp or the vicinity of the vehicle can be suppressed.

[Legs 32]
FIG. 7 is a perspective view of the optical control member 30, and is a perspective view so that the exit surface 31A side can be seen.
Further, FIG. 8 is a plan view of the composite optical lens 31 as viewed from the side surface, and FIG. 9 is a plan view of the optical control member 30 as viewed from the front.

As shown in FIGS. 7 and 9, the legs 32 are provided in pairs so as to be connected to the side surfaces of the composite optical lens 31 in the vehicle width direction (left-right direction in FIG. 9).

Specifically, each leg portion 32 has a support portion 32A having one end connected to the side surface of the composite optical lens 31 in the vehicle width direction (left-right direction in FIG. 9) and a support portion 32A extending rearward from one end. It is provided with a fixing portion 32B for fixing the optical control member 30 which is connected to the other end side of the vehicle and protrudes in the vehicle width direction to the heat sink 10 together with the light source device 20.

More specifically, each leg portion 32 (more specifically, one end of the support portion 32A) is located between the exit surface 31A of the composite optical lens 31 shown in FIG. 8 and the top line 31CA of the shade portion 31C (see range R). The side surface of this range R is a position where it is easy to design without optical control (for example, reflection, etc.), and by connecting the leg 32 to that position, composite optics The leg portion 32 can be provided so as not to affect the optical characteristics of the lens 31.

Further, in the present embodiment, as shown in FIG. 8, the composite optical lens 31 is formed so that the position of the center of gravity CB viewed in the front-rear direction is located between the exit surface 31A and the top line 31CA of the shade portion 31C. ing.

Then, each leg portion 32 (more specifically, one end of the support portion 32A) is between the emission surface 31A of the composite optical lens 31 at the position of the center of gravity CB and the top line 31CA of the shade portion 31C (see range R). It is connected to the position of.

In this way, since each leg portion 32 (more specifically, one end of the support portion 32A) is connected near the position of the center of gravity CB, stable support of the composite optical lens 31 is possible and each of them is possible. The load applied to the leg portion 32 (more specifically, one end of the support portion 32A) is reduced.

As can be seen from FIG. 7, the support portion 32A has a straight portion extending so as to have a substantially constant width from one end to the other end and slightly inclined outward in the vehicle width direction, and a straight portion extending from the straight portion to the other. It has a divergent portion that extends rearward toward the end side and widens in the vertical direction toward the other end side.

The width of the farthest end of the divergent portion in the vertical direction is wider than the width of the reinforcing portion 33 described later in the vertical direction, and corresponds to the support portion 32A when the optical control member 30 is resin-molded. The fluidity of the resin in the mold is improved.

On the other hand, as mentioned with reference to FIG. 2, in the heat sink 10, each fixing mechanism of the heat sink 10 provided corresponding to each fixing portion 32B has a positioning pin 11A for positioning the optical control member 30. , A screw screw hole 11B for screwing a screw N for attaching the optical control member 30, and correspondingly, each fixing portion 32B has a first through hole 34A corresponding to the positioning pin 11A. It is provided with a second through hole 34B corresponding to the screw screw hole 11B.

Then, as can be seen from FIG. 2, in the optical control member 30, the leg portion 32 (more specifically, the fixing portion 32B) is installed on the connector connecting member 23, and the optical control member 30 is provided with the light source device 20 by the screw N. It is fixed to the heat sink 10.
In this embodiment, the reinforcing portion 33, which will be described later, is also installed on the connector connecting member 23.

In this way, the leg portion 32 is interposed between the leg portion 32 and the heat transfer member 21, is installed on the connector connecting member 23 that functions as a heat insulating member, and is directly attached to the heat transfer member 21 that may become hot. Since they do not come into contact with each other, deterioration due to heat of the optical control member 30 (more specifically, the fixing portion 32B and the reinforcing portion 33 described later) can be suppressed.

Further, as shown in FIG. 9, a pair of leg portions 32 (more specifically, fixed portions 32B) are provided at positions facing each other across the lens optical axis Z of the composite optical lens 31, and correspond to the positioning pins 11A. The first through hole 34A is formed in the fixed portion 32B so that the straight line H connecting the centers of the first through hole 34A passes on the lens optical axis Z.

The optical control member 30 is provided so that the optical axis Z of the lens substantially coincides with the light emitting center of the light source 22.
Therefore, when the optical control member 30 is viewed from the front (state of the plan view seen from the front shown in FIG. 9) and a force that deviates in the rotational direction is applied, the light emitting center of the light source 22 and the lens light are applied. The deviation of the axis Z is less likely to occur.

FIG. 10 is a diagram for explaining a case where a force deviating in the rotational direction is applied to the optical control member 30.
In FIG. 10, the positioning pin 11A is drawn small so that the state when a force for shifting in the rotation direction is applied is drawn small, but in reality, the positioning pin 11A is drawn to the first through hole 34A. It is assumed that the diameter is as large as possible as long as it does not interfere with the insertion of the.

Further, in FIG. 10, a straight line H connecting the centers of the first through hole 34A shown in FIG. 9 is shown by a dotted line, and a force deviating in the rotational direction is applied to the optical control member 30, and the optical control member 30 moves in the rotational direction. The straight line H connecting the centers of the first through holes 34A in the state of the optical control member 30 after the rotation is shown by a solid line.

As shown in FIG. 10, when a force in the rotational direction is applied, the optical control member 30 rotates within the range of the gap between the first through hole 34A and the positioning pin 11A.
It should be noted that such rotation does not occur after being fixed with the screw N, but such rotation may occur until the fixing with the screw N at the time of fixing work is completed. ..

However, a pair of leg portions 32 (more specifically, a fixed portion 32B) are provided at positions facing each other across the lens optical axis Z of the composite optical lens 31, and a first through hole 34A corresponding to the positioning pin 11A is provided. A straight line H connecting the centers of the first through hole 34A is formed in the fixed portion 32B so as to pass on the lens optical axis Z. More precisely, the first through hole 34A is substantially equal to the lens optical axis Z. The first through hole 34A is located at a distance, and the lens optical axis Z and the centers of the two first through holes 34A are formed in the fixed portion 32B so as to line up in a straight line. Therefore, the rotation of the optical control member 30 Is rotation about the lens optical axis Z.

Therefore, even if a force in the rotational direction is applied to the optical control member 30, the position of the lens optical axis Z is suppressed to be significantly displaced, so that the lens optical axis Z substantially coincides with the light emission center of the light source 22. Can be maintained, and the effect of misalignment on the light distribution pattern can be minimized.

[Reinforcing part 33]
As mentioned earlier, the reinforcing portion 33 is provided so as to connect the leg portions 32 so as to avoid the composite optical lens 31 as shown in FIGS. 7 and 9.

Specifically, in the present embodiment, the optical control member 30 has one reinforcing portion 33 provided so as to connect the upper side between the pair of leg portions 32 so as to avoid the composite optical lens 31, and the composite optical lens 31. The other reinforcing portion 33 provided so as to connect the lower side between the pair of leg portions 32 so as to avoid the above, and the pair of fixing portions 32B (including a part of the other end side of the support portion 32A). The pair of reinforcing portions 33 have a substantially rectangular ring shape surrounding the composite optical lens 31 when viewed from the front side when the optical control member 30 is viewed.

When the pair of legs 32 are connected by the reinforcing portion 33 in this way, the leg portions 32 are suppressed from being displaced due to vibration or the like, and the durability of the leg portions 32 can be enhanced.
In the present embodiment, the vicinity of the pair of fixed portions 32B is connected by the reinforcing portion 33, but it is not always necessary to provide the reinforcing portion 33 so as to connect the vicinity of the pair of fixed portions 32B, and the space between the supporting portions 32A. May be connected.

However, as in the present embodiment, by providing the reinforcing portion 33 so as to connect the vicinity of the pair of fixed portions 32B, the reinforcing portion 33 can also be in a state of being installed on the connector connecting member 23. The installation stability of the control member 30 can be improved.

As described above, according to the present embodiment, the composite optical lens 31 in which the shade portion 31C, the first reflector surface 31D, the second reflector surface 31E, and the like are formed in the lens of the optical control member 30 is used. Therefore, compared to the case where a shade member or a reflector member that is separate from the lens is used, not only the number of parts can be significantly reduced, but also the size can be reduced.

Further, when the leg portions 32 for fixing are integrally formed on the composite optical lens 31, the leg portions 32 are the emission surfaces of the composite optical lens 31 so as not to affect the optical characteristics of the composite optical lens 31. Since it is connected to the position between 31A and the top line 31CA of the shade portion 31C, a good low beam light distribution pattern can be formed.

Moreover, since the legs 32 integrally formed with the composite optical lens 31 are installed on the light source device 20 without using a lens holder or the like, the positional accuracy of the composite optical lens 31 with respect to the light source 22 is improved. Can be done.

Although the present invention has been described above based on specific embodiments, the present invention is not limited to the above embodiments.
For example, from the viewpoint of durability and the like, it is preferable to provide the reinforcing portion 33, but it is not always necessary to provide the reinforcing portion 33, and the reinforcing portion 33 may be omitted.

Further, in the above embodiment, the legs 32 are connected to the side surface of the composite optical lens 31 in the vehicle width direction, but the present invention is not limited to this.

As described above, the present invention also includes modifications and improvements to the above embodiment within the technical scope of the invention, which is clear to those skilled in the art from the description of the scope of claims.

1 Lighting unit 10 Heat shield 11 Base 11A Positioning pin 11B Screw screw hole 12 Heat dissipation fin 20 Light source device 21 Heat transfer member 22 Light source 22A Board 22B Light emitting area 23 Connector connection member 23A Opening 23B Connection part 24A, 24B Through hole 30 Optical Control member 31 Composite optical lens 31A Light source surface 31B Incident surface 31BA Convex surface 31C Shade unit 31CA Top line 31CB Rear inclined surface 31CC Front inclined surface 31CCA Reflection angle adjustment unit 31D First reflector surface 31E Second reflector surface 31F Light scattering unit 31G Reflection surface 32 Leg 32A Support 32B Fixing 33 Reinforcing part 34A First through hole 34B Second through hole CB Center of gravity L1, L2, L3, L4, L5, L6 Optical N screw Z Lens optical axis 101L, 101R For vehicles Headlight 102 vehicle

Claims (8)

A vehicle lamp provided with a light source, an optical control member for controlling light distribution from the light source, and a heat sink.
The optical control member is
The composite optical lens that controls the light distribution and
A plurality of legs integrally formed with the composite optical lens are provided.
The composite optical lens is
The incident surface on which light is incident and
An exit surface that irradiates the light incident from the incident surface to the front side,
A shade portion formed between the entrance surface and the emission surface is provided.
The legs are connected to the positions between the emission surface of the composite optical lens and the apex line of the shade portion, respectively.
The legs
A support part whose one end is connected to the composite optical lens,
It is provided with a fixing portion connected to the other end side of the support portion and for fixing the optical control member.
The heat sink includes a fixing mechanism provided corresponding to each of the fixing portions.
Each of the fixing mechanisms
A positioning pin for positioning the optical control member and
It is provided with a screw screw hole for screwing a screw for attaching the optical control member.
Each of the fixing portions
The first through hole corresponding to the positioning pin and
A second through hole corresponding to the screw screw hole is provided.
A pair of legs are provided at positions facing each other across the optical axis of the compound optical lens.
The first through hole is formed in the fixed portion so that a straight line connecting the centers of the first through hole passes on the optical axis of the lens.
The optical control member is a lamp for a vehicle, characterized in that the optical control member is provided so that the optical axis of the lens is substantially aligned with the light emitting center of the light source. The vehicle lighting fixture according to claim 1, wherein the legs are provided in pairs so as to be connected to the side surfaces of the composite optical lens in the vehicle width direction. The vehicle lighting fixture includes a light source device having the light source.
The light source device is
A heat transfer member located between the light source and the heat sink, provided with the light source,
A connector connecting member made of an insulating resin containing an electrical wiring for making an electrical connection between the light source and the external connector is provided.
The heat transfer member and the connector connecting member
The through hole corresponding to the positioning pin and
With a through hole corresponding to the screw screw hole,
The first or second aspect of the present invention, wherein the optical control member is fixed to the heat sink together with the light source device by the screw in a state where the leg portion is installed on the connector connecting member. The vehicle lighting equipment described. A vehicle lamp provided with a light source and an optical control member for controlling the light distribution from the light source.
The optical control member is
The composite optical lens that controls the light distribution and
A plurality of legs integrally formed with the composite optical lens are provided.
The composite optical lens is
The incident surface on which light is incident and
An exit surface that irradiates the light incident from the incident surface to the front side,
A shade portion formed between the entrance surface and the emission surface is provided.
The legs are connected to the positions between the emission surface of the composite optical lens and the apex line of the shade portion, respectively.
The composite optical lens is
A first reflector surface formed on the upper side of the entrance surface side from the top line and reflecting light forming the first diffusion light distribution pattern toward the emission surface.
For a vehicle, the second reflector surface, which is formed below the incident surface side of the top line and reflects light forming a condensing light distribution pattern toward the emitting surface, is provided. Lighting equipment. A vehicle lamp provided with a light source and an optical control member for controlling the light distribution from the light source.
The optical control member is
The composite optical lens that controls the light distribution and
A plurality of legs integrally formed with the composite optical lens are provided.
The composite optical lens is
The incident surface on which light is incident and
An exit surface that irradiates the light incident from the incident surface to the front side,
A shade portion formed between the entrance surface and the emission surface is provided.
The legs are connected to the positions between the emission surface of the composite optical lens and the apex line of the shade portion, respectively.
The shade portion has a front inclined surface that inclines forward from the top line.
The composite optical lens is formed with a reflective surface that reflects a part of the direct light from the light source toward at least a part of the front inclined surface.
A vehicle lighting fixture characterized in that light reflected by the reflecting surface and further reflected by the front inclined surface is emitted from the emitting surface as overhead light distribution. A vehicle lamp provided with a light source and an optical control member for controlling the light distribution from the light source.
The optical control member is
The composite optical lens that controls the light distribution and
A plurality of legs integrally formed with the composite optical lens are provided.
The composite optical lens is
The incident surface on which light is incident and
An exit surface that irradiates the light incident from the incident surface to the front side,
A shade portion formed between the entrance surface and the emission surface is provided.
The legs are connected to the positions between the emission surface of the composite optical lens and the apex line of the shade portion, respectively.
The shade portion has a rear inclined surface that inclines rearward from the top line.
The composite optical lens is formed in a portion where the light reflected by the rear inclined surface, which reflects reflected light that is not planned to be controlled by the emission surface toward the emission surface, is directly irradiated. A vehicle lighting device characterized by having a light scattering part. The vehicle according to any one of claims 1 to 6, wherein the composite optical lens is formed so that the center of gravity is located between the emission surface and the top line of the shade portion. Lighting equipment. The vehicle according to any one of claims 1 to 7, wherein the optical control member includes a reinforcing portion for connecting the legs, which is formed so as to avoid the composite optical lens. Optics.

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