Vehicle lighting

Abstract

To provide a vehicular lighting fixture inside which heat is hardly accumulated, and can prevent thermal deformation of a condenser lens and a projection lens.SOLUTION: A vehicular lighting fixture 10 comprises a light source part 12, a supporting part 11, a condenser lens 13, a light blocking member 14, and a projection lens 15. A first space S1 is formed by a first lens part 41, a first lens peripheral wall part 42, and the light blocking part (a shade part 51). A second space S2 is formed by a second lens part 61, a second lens peripheral wall part 62, and the light blocking part (the shade part 51). An upper opening part (an upper opening part 42b in the case of the first lens peripheral wall part 42, and an upper opening part 62b in the case of the second lens peripheral wall part 62) is formed in a portion located in an upper part of at least one of the first lens peripheral wall part 42 and the second lens peripheral wall part 62.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to vehicle lamps.

Background Art

[0002] Vehicle lamps are considered to form an irradiation pattern on the road surface around the vehicle. For example, the vehicle lamp described in Patent Document 1 includes a light source unit, a support unit that supports the light source unit, a condenser lens that condenses the light emitted from the light source unit, a light shielding member provided with an irradiation slit that partially passes the light condensed by the condenser lens, a projection lens that projects the light that has passed through the light shielding member to form an irradiation pattern, and a housing that houses these components. A sealed space is provided inside the housing.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the temperature of vehicle lamps rises due to the heat generated by the light source unit itself and the heat generated by the light emitted from the light source unit, and heat tends to accumulate inside. In particular, it has been found that the light shielding member has a large area where light hits and is likely to have its temperature rise, which can cause thermal deformation of the condenser lens and projection lens existing around it.

[0005] An object of the present invention is to provide a vehicle lamp in which heat hardly accumulates inside and thermal deformation of the condenser lens and projection lens can be prevented.

Means for Solving the Problems

[0006] To achieve the above objective, the vehicle lamp of the present invention comprises a light source unit, a support unit for supporting the light source unit, a focusing lens for focusing light emitted from the light source unit, a light-shielding member provided with an irradiation slit that partially allows light focused by the focusing lens to pass through, and a projection lens that projects light that has passed through the light-shielding member to form an irradiation pattern, wherein the focusing lens has a first lens portion and a first lens peripheral wall portion rising from the first lens portion with the first lens portion as the bottom, and the projection lens has a second lens portion and a second lens peripheral wall portion rising from the second lens portion with the second lens portion as the bottom, a first space is formed by the first lens portion, the first lens peripheral wall portion and the light-shielding member, a second space is formed by the second lens portion, the second lens peripheral wall portion and the light-shielding member, and an upper opening is formed in the portion located above at least one of the first lens peripheral wall portion and the second lens peripheral wall portion. [Effects of the Invention]

[0007] In this invention, heat is less likely to accumulate inside, preventing thermal deformation of the focusing lens and projection lens. [Brief explanation of the drawing]

[0008] [Figure 1] This is an explanatory diagram showing how the vehicle lighting fixtures of this embodiment are mounted on a vehicle and form their respective illumination patterns. [Figure 2] This is a perspective view showing the configuration of a vehicle's lighting system. [Figure 3] Figure 2 is an exploded perspective view of the vehicle lighting fixture shown. [Figure 4] Figure 2 is a front view of the vehicle lighting fixture. [Figure 5] Figure 4 is a VV line end view. [Figure 6] This is a comparative example of Figure 5, and is an end view at the same position of a vehicle light fixture in which the first upper opening and the first lower opening, as well as the second upper opening and the second lower opening, are not formed. [Modes for carrying out the invention]

[0009] Hereinafter, embodiments of the vehicle lighting device according to the present invention will be described with reference to the drawings. Note that in Figure 1, the vehicle lighting device 10 is emphasized relative to the vehicle 1 in order to facilitate understanding of how the vehicle lighting device 10 is installed, and therefore does not necessarily correspond to the actual appearance.

[0010] As shown in Figure 1, the vehicle light fixture 10 of this embodiment is used as a light fixture for a vehicle 1 such as an automobile. It is installed at the front of the vehicle 1 to form an illumination pattern Pi on the surrounding road surface 2 in front of the vehicle 1, separate from the headlights installed on the vehicle 1. The surrounding area in front of the vehicle 1 always includes a proximity area closer to the vehicle 1 than the headlight area illuminated by the headlights installed on the vehicle 1, and may also partially include the headlight area. The vehicle light fixture 10 may also form an illumination pattern Pi on the surrounding road surface 2 behind and to the sides of the vehicle 1, and is not limited to the configuration of this embodiment.

[0011] In this embodiment, each vehicle light fixture 10 is positioned higher than the road surface 2 at the front end of the vehicle 1. The vehicle light fixture 10 is installed on the vehicle 1 at an angle to the road surface 2 such that the projected optical axis Lp (see Figures 3 and 5, etc.) is directed toward the road surface 2. The two vehicle light fixtures 10 are basically identical in configuration, except that their mounting positions and the positions that form the illumination pattern Pi are different.

[0012] In the following description, the optical axis direction (Z), vertical direction (Y), and width direction (X) of each vehicle light fixture 10 are defined as shown in Figures 2 to 5. That is, the optical axis direction (Z) is the direction in which the projected optical axis Lp, which is the direction in which light is emitted (projected), extends; the vertical direction (Y) is the direction perpendicular to the optical axis direction (Z); and the width direction (X) is the direction perpendicular to both the optical axis direction and the vertical direction.

[0013] As shown in Figures 2 and 3, the vehicle lighting fixture 10 has a light source unit 12, a condensing lens 13, a shade (light-shielding member) 14, and a projection lens 15 attached to a mounting base (support unit) 11, forming a single projection optical system and constituting a projector-type road surface projection unit.

[0014] The mounting base 11 is where the light source 12 is installed and is made of aluminum die-cast or resin with thermal conductivity, and functions as a heat sink to dissipate the heat generated by the light source 12 to the outside. The mounting base 11 has a base portion 21, a plurality of heat dissipation fins (heat dissipation parts) 22, and a pair of mounting arms (mounted parts) 23.

[0015] The base portion 21 is a flat plate perpendicular to the optical axis direction, with a light source mounting location 24 provided in the center. The light source mounting location 24 defines the location where the light source unit 12 is attached, and as shown in Figure 3, it is a flat surface between a pair of mounting arms 23, and is provided with a pair of screw holes 24a and a pair of positioning protrusions 24b. The pair of screw holes 24a are provided at diagonal positions on the light source mounting location 24, and can be fixed by screwing in screws 25 (see Figure 2). The pair of positioning protrusions 24b are arranged in the width direction on the light source mounting location 24, each located near each mounting arm 23, and protrude forward in the optical axis direction. Each heat dissipation fin 22 is a plate perpendicular to the width direction on the rear side of the base portion 21 (the rear side in the optical axis direction (opposite the direction in which light is emitted)). Each heat dissipation fin 22 is provided in parallel with a predetermined spacing in the width direction. The mounting base 11 primarily dissipates heat generated by the light source unit 12 installed at the light source mounting location 24 to the outside through the heat dissipation fins 22.

[0016] A pair of mounting arms 23 are provided in pairs on both outer sides in the width direction of the light source mounting portion 24, and protrude forward from the base portion 21 in the optical axis direction. Both mounting arms 23 have end portions 23a on the front side in the optical axis direction that are planes orthogonal to the optical axis direction, and their mutual end portions 23a are positioned at equal positions (on the same plane) in the optical axis direction. A positioning projection 23b and a screw hole 23c are provided on each end portion 23a. The positioning projection 23b is provided at the lower part in the vertical direction of the end portion 23a and protrudes forward in the optical axis direction. The screw hole 23c is provided at the upper part in the vertical direction of the end portion 23a, and it is possible to fix the condenser lens 13, the shade 14, and the projection lens 15 by screwing in a screw 26.

[0017] The light source unit 12 includes a first light source 31, a second light source 32, a connector terminal (not shown), and a substrate 33 on which they are mounted. The first light source 31 and the second light source 32 are composed of light emitting elements such as LEDs (Light Emitting Diodes). In the present embodiment, the first light source 31 and the second light source 32 emit amber-colored light (amber-colored light) with a Lambertian distribution centered on the emission optical axis. Note that the first light source 31 and the second light source 32 may be appropriately set in terms of color (wavelength band), distribution mode, number of light sources, etc., and are not limited to the configuration of the present embodiment.

[0018] The connector terminal (not shown) is electrically connected to the wiring pattern of the substrate 33, and a connection connector connected to the lighting control circuit is detachable. The connector terminal enables the supply of power from the lighting control circuit through the wiring pattern to each of the light sources 31 and 32 when the connection connector is attached.

[0019] The substrate 33 is in the shape of a plate formed of an aluminum substrate, and the first light source 31 and the second light source 32 are mounted thereon. In the substrate 33, screw-through holes 33a are provided at positions on the diagonal line corresponding to the pair of screw holes 24a at the light source mounting location 24 of the base portion 21 of the installation table portion 11. Also, a pair of positioning holes 33b are provided corresponding to the pair of positioning protrusions 24b at the light source mounting location 24. The substrate 33 is attached to the light source mounting location 24 by screwing the screws 25 passed through the pair of screw-through holes 33a corresponding to the pair of screw holes 24a into the corresponding screw holes 24a while the positioning protrusions 24b corresponding to the pair of positioning holes 33b are passed through. Thereby, the substrate 33 makes the light source mounting location 24, that is, the first light source 31 and the second light source 32 mounted thereon, face the condenser lens 13. The substrate 33 appropriately supplies power from the lighting control circuit via the connector terminals to light the first light source 31 and the second light source 32. Note that the substrate 33 may be formed of a glass epoxy substrate.

[0020] The condenser lens 13 condenses the light emitted from the first light source 31 and the second light source 32, and condenses the light in the periphery of each slit portion 54 described later on the shade 14, that is, in the region including all the slit portions 54 and provided with each slit portion 54 on the shade 14. In the present embodiment, the condenser lens 13 is made of polycarbonate.

[0021] The condenser lens 13 has a first lens portion 41, a first lens peripheral wall portion 42, and a first lens mounting portion 43. The first lens portion 41 is a portion where the central portion is arranged on the projection optical axis Lp in the installed state of the condenser lens 13 and mainly condenses the light emitted from the first light source 31 and the second light source 32. The first lens peripheral wall portion 42 is a portion that rises from the first lens portion 41 with the first lens portion 41 as the bottom. The first lens mounting portion 43 is a portion that extends in the width direction from the end portion 42a of the first lens peripheral wall portion 42 and has a pair of first lens mounting piece portions 43a.

[0022] Both first lens mounting pieces 43a are plate-shaped and perpendicular to the optical axis direction, and can be placed on top of the ends 23a of both mounting arms 23 of the base portion 21 of the mounting stand portion 11. Each first lens mounting piece 43a is provided with a first lens positioning hole 43b and a first lens screw hole 43c. Each first lens positioning hole 43b allows the positioning projection 23b to be fitted into the first lens mounting piece 43a when it is placed on top of the end portion 23a. Each first lens screw hole 43c allows a screw 26 to be passed through the screw hole 23c when the first lens mounting piece 43a is placed on top of the end portion 23a. The condensing lens 13 is attached to both mounting arms 23 (and their ends 23a) of the mounting base 11 by passing a positioning projection 23b corresponding to each first lens positioning hole 43b through it, and then screwing each screw 26, which is passed through each first lens screw hole 43c, into the corresponding screw hole 23c.

[0023] At the end portion 42a of the first lens peripheral wall portion 42, where a pair of first lens mounting pieces 43a are not formed, a pair of substantially rectangular notches 42b and 42c are formed at the upper and lower positions when the condensing lens 13 is installed.

[0024] The shade 14 is an example of a light-shielding member that forms an illumination pattern Pi by partially passing light from the first light source 31 and the second light source 32, which are focused by the light-gathering lens 13, through the illumination slit 53. As shown in Figure 1, the illumination pattern Pi consists of three illumination patterns Di aligned at approximately equal intervals in the direction away from the vehicle 1. Here, when each illumination pattern Di is shown individually, the one furthest from the vehicle 1 is called the first illumination pattern Di1, and as they get closer to the vehicle 1, they are called the second illumination pattern Di2, the third illumination pattern Di3, and so on. In this embodiment, each of the first illumination pattern Di1 to the third illumination pattern Di3 is a V-shaped symbol and is arranged on the same straight line away from the vehicle 1 so that it looks like an arrow pointing in the direction Da from the vehicle 1.

[0025] As shown in Figure 3, the shade 14 is basically made of a plate-shaped member that blocks light transmission and has a shade portion 51 and a pair of shade mounting pieces 52. The shade mounting pieces 52 protrude from the shade portion 51 on both sides in the width direction and can be positioned on top of the first lens mounting pieces 43a of the condensing lens 13 which is attached to the ends 23a of the mounting arms 23 of the mounting base portion 11. Each shade mounting piece 52 is provided with a shade positioning hole 52a and a shade screw hole 52b.

[0026] Each shade positioning hole 52a is designed so that a positioning projection 23b can be fitted into it when the shade mounting piece 52 is superimposed on the first lens mounting piece 43a. Each shade screw hole 52b is designed so that a screw 26, which passes through the first lens screw hole 43c, can be passed through it when the shade mounting piece 52 is superimposed on the first lens mounting piece 43a. The shade 14 is attached to both mounting arms 23 of the mounting base 11 via the condensing lens 13 by passing the positioning projection 23b corresponding to each shade positioning hole 52a through it, and screwing each screw 26, which passes through each shade screw hole 52b, into the corresponding screw hole 23c. With the shade mounting piece 52 attached to both mounting arms 23, the center position of the shade 51 is positioned on the projection optical axis Lp.

[0027] When the shade 14 is fixed to the condensing lens 13, a first space S1 is formed, surrounded by the first lens portion 41, the first lens peripheral wall portion 42, and the shade portion 51.

[0028] The pair of notches 42b and 42c function as openings that connect to the first space S1. With the condensing lens 13 installed, the upper notch 42b becomes the first upper opening 42b, and the lower notch 42c becomes the first lower opening 42c.

[0029] The shade portion 51 is provided with an illumination slit 53 formed by partially cutting out and penetrating a plate-shaped member. The illumination slit 53 partially passes through the light from the first light source 31 and the second light source 32, which are focused by the condensing lens 13 (mainly the first lens portion 41), thereby shaping the projected illumination pattern Pi into a predetermined shape. The illumination slit 53 corresponds to the illumination pattern Pi and, as shown in Figure 3, in this embodiment, is composed of three slit portions 54.

[0030] These three slit sections 54 correspond one-to-one with the three illumination patterns Di. Each slit section 54 is rotated symmetrically with respect to the positional relationship of each illumination pattern Di of the illumination pattern Pi, because the projection lens 15 inverts the shade 14 (illumination slit 53) and projects it onto the road surface 2 (see Figure 3). For this reason, the first slit section 541, which is the lowest in the vertical direction, corresponds to the first illumination pattern Di1 of the illumination pattern Pi, the second slit section 542 above it corresponds to the second illumination pattern Di2, and the third slit section 543 above it corresponds to the third illumination pattern Di3. The size and spacing of the three slit sections 54 are set according to the distance to the road surface 2 so that each illumination pattern Di is approximately equally spaced on the road surface 2 with the size shown in Figure 1 above.

[0031] The projection lens 15 projects the light that has passed through the shade 14 onto the road surface 2. In this embodiment, the projection lens 15 is made of acrylic.

[0032] The projection lens 15 has a second lens portion 61, a second lens peripheral wall portion 62, and a second lens mounting portion 63. The second lens portion 61 is the part whose center is positioned on the projection optical axis Lp when the projection lens 15 is installed, and which mainly projects light emitted from the first light source 31 and the second light source 32. The second lens peripheral wall portion 62 is the part that rises up from the second lens portion 61 with the second lens portion 61 as its base. The second lens mounting portion 63 is the part that extends in the width direction from the end portion 62a of the second lens peripheral wall portion 62, and has a pair of second lens mounting pieces 63a.

[0033] Both second lens mounting pieces 63a are plate-shaped and perpendicular to the optical axis direction, and can be placed on top of each shade mounting piece 52 of the shade 14 attached to the ends 23a of both mounting arms 23 of the base portion 21 of the mounting stand portion 11. Each second lens mounting piece 63a is provided with a second lens positioning hole 63b and a second lens screw hole 63c. Each second lens positioning hole 63b allows a positioning projection 23b to be fitted into it when the second lens mounting piece 63a is placed on top of the shade mounting piece 52. Each second lens screw hole 63c allows a screw 26 to be passed through the shade screw hole 52b when the second lens mounting piece 63a is placed on top of the shade mounting piece 52. The projection lens 15 is attached to both mounting arms 23 (their ends 23a) of the mounting base 11 by passing positioning protrusions 23b corresponding to each second lens positioning hole 63b through them, and then screwing each screw 26, which is passed through each second lens screw hole 63c, into the corresponding screw hole 23c. As a result, the projection lens 15 has its projection optical axis Lp, which is the optical axis of the second lens portion 61, oriented in a predetermined direction, thereby setting the orientation of the projection optical axis Lp of the vehicle lamp 10.

[0034] When the projection lens 15 is fixed to the shade 14, a second space S2 is formed, surrounded by the second lens portion 61, the second lens peripheral wall portion 62, and the shade portion 51.

[0035] At the end portion 62a of the second lens peripheral wall portion 62, where a pair of second lens mounting pieces 63a are not formed, a pair of substantially rectangular notches 62b and 62c are formed at the upper and lower positions when the projection lens 15 is installed. The pair of notches 62b and 62c function as openings that connect to the second space S2. When the projection lens 15 is installed, the notch 62b located at the top becomes the second upper opening 62b, and the notch 62c located at the bottom becomes the second lower opening 62c.

[0036] Figure 4 is a front view of the vehicle lighting fixture shown in Figure 2, and Figure 5 is an end view of the VV line shown in Figure 4. Figure 6 is a comparative example of Figure 5, and is an end view of the vehicle lighting fixture at the same position, but without the first upper opening, the first lower opening, the second upper opening, and the second lower opening. In Figure 6, the same components as shown in Figure 5 are denoted by the symbol "'". In Figures 5 and 6, the airflow within the space is indicated by the arrow AF.

[0037] When the light sources (first light source 31 and second light source 32) are turned on by the control circuit, light is emitted from the light sources. The heat emitted by the light sources themselves and the emitted light cause the ambient temperature to rise. In particular, the shade 14 has a large surface area exposed to light, so its temperature rises, which also raises the temperature of the air in the surrounding first space S1 and second space S2.

[0038] As shown in Figure 6, in the case of a vehicle light fixture 10' in which the first upper opening and first lower opening, and the second upper opening and second lower opening are not formed, the heated air in the first space S1 and the second space S2 becomes trapped in the space, causing the temperature of the surrounding condensing lens 13' and projection lens 15' to rise. This can cause thermal deformation of the condensing lens 13' and projection lens 15'.

[0039] In contrast, in the case of the vehicle lighting device 10 of this embodiment, as shown in Figure 5, the first space S1 is connected to the outside through the first upper opening 42b and the first lower opening 42c. Therefore, when the air in the first space S1 is heated and convection occurs, outside air enters the first space S1 through the first lower opening 42c and air exits through the first upper opening 42b. Similarly, the second space S2 is connected to the outside through the second upper opening 62b and the second lower opening 62c. Therefore, when the air in the second space S2 is heated and convection occurs, outside air enters the second space S2 through the second lower opening 62c and air exits through the second upper opening 62b. As a result, the temperature rise of the air in the first space S1 and the second space S2 is suppressed, and thermal deformation of the condensing lens 13 and the projection lens 15 can be suppressed.

[0040] The operation of the vehicle lighting device 10 is described below.

[0041] The vehicle light fixture 10 comprises a light source unit 12, a support unit (mounting base unit) 11 that supports the light source unit 12, a focusing lens 13 that focuses the light emitted from the light source unit 12, a light-shielding member (shade) 14 provided with an illumination slit 53 that partially allows the light focused by the focusing lens 13 to pass through, and a projection lens 15 that projects the light that has passed through the light-shielding member 14 to form an illumination pattern Pi. The focusing lens 13 has a first lens portion 41 and a first lens peripheral wall portion 42 that rises from the first lens portion 41 with the first lens portion 41 as the bottom, and the projection lens 15 has a second lens portion 61, The lens has a second lens portion 61 as its base and a second lens peripheral wall portion 62 rising from the second lens portion 61. A first space S1 is formed by the first lens portion 41, the first lens peripheral wall portion 42 and the light-shielding member 14, and a second space S2 is formed by the second lens portion 61, the second lens peripheral wall portion 62 and the light-shielding member 14. An upper opening (first upper opening 42b in the case of the first lens peripheral wall portion 42, and second upper opening 62b in the case of the second lens peripheral wall portion 62) is formed in the upper part of at least one of the first lens peripheral wall portion 42 and the second lens peripheral wall portion 62.

[0042] Since the heated air within the space (first space S1 or second space S2) is released to the outside of the space through the upper opening (first upper opening 42b or second upper opening 62b), heat is less likely to accumulate inside, and thermal deformation of the focusing lens 13 and projection lens 15 can be prevented.

[0043] A lower opening (a first lower opening 42c in the case of the first lens peripheral wall 42, or a second lower opening 62c in the case of the second lens peripheral wall 62) may be formed in the portion located below the first lens peripheral wall 42 or the second lens peripheral wall 62 in which the upper opening is formed. When a lower opening is formed that is paired with the upper opening, the heated air in the space is more smoothly released out of the space through the upper opening.

[0044] The first lens peripheral wall portion 42 may have a first upper opening 42b formed in the upper part and connected to the first space S1, and a first lower opening 42c formed in the lower part and connected to the first space S1. The second lens peripheral wall portion 62 may have a second upper opening 62b formed in the upper part and connected to the second space S2, and a second lower opening 62c formed in the lower part and connected to the second space S2. With this configuration, the heated air in the first space S1 is smoothly released to the outside of the space by the first upper opening 42b and the first lower opening 42c. Also, the heated air in the second space S2 is smoothly released to the outside of the space by the second upper opening 62b and the second lower opening 62c.

[0045] The support portion 11 has a mounting portion (a pair of mounting arms) 23 and a heat dissipation portion (a plurality of heat dissipation fins) 22, the condensing lens 13 has a first lens mounting portion 43 extending in the width direction intersecting the optical axis direction from the end 42a of the first lens peripheral wall portion 42, the light shielding member 14 has a light shielding member mounting portion (shade mounting piece) 52 extending in the width direction, and the projection lens 15 has a second lens mounting portion 63 extending in the width direction from the end 62a of the second lens peripheral wall portion 62, and the condensing lens 13, light shielding member 14 and projection lens 15 may be fixed to the mounting portion 23 in a stacked state in the order of the first lens mounting portion 43, the light shielding member mounting portion 52, and the second lens mounting portion 63.

[0046] The focusing lens 13 and the projection lens 15 may be formed from any transparent material that allows light to pass through. For example, polycarbonate or acrylic can be used as raw materials. The focusing lens 13 and the projection lens 15 may be formed from the same material, or they may be made from different materials. If they are made from different materials, for example, the focusing lens 13 may be made of polycarbonate with an emphasis on heat resistance, and the projection lens 15 may be made of acrylic with an emphasis on transparency. In this case, since acrylic is more susceptible to thermal deformation than polycarbonate, if it is necessary to select the formation position of the upper opening, it is preferable to form it before the second lens peripheral wall portion 62.

[0047] Although embodiments of the present invention have been specifically described above, the present invention is not limited to these embodiments, and modifications are, of course, possible within the scope of the technical idea of ​​the present invention.

[0048] For example, in the above embodiment, a total of four openings were formed: the first upper opening 42b and the first lower opening 42c, and the second upper opening 62b and the second lower opening 62c. However, as explained in the above description of the operation, it is sufficient to form openings in the upper part of at least one of the first lens peripheral wall portion 42 and the second lens peripheral wall portion 62. Therefore, it is certainly possible to form only the first upper opening 42b or the second upper opening 62b, or only the first upper opening 42b and the first lower opening 42c, or only the first upper opening 42b and the second upper opening 62b, or only the first upper opening 42b, the first lower opening 42c and the second upper opening 62b.

[0049] Furthermore, in the above embodiment, the first upper opening 42b and the first lower opening 42c, and the second upper opening 62b and the second lower opening 62c are formed by notches, but since any opening that is connected to a space (first space and second space) is acceptable, it is also possible to form the opening in the first lens peripheral wall portion 42 or the second lens peripheral wall portion 62 by through holes. [Explanation of symbols]

[0050] 10 Vehicle lighting fixtures 11 Installation stand 12 Light source section 13. Focusing lens 41 First lens section 42 First lens peripheral wall 42a end 42b 1st upper opening (notch) 42c 1st lower opening (notch) 43. First lens mounting section 14. Shade (light-blocking material) 15 Projection lens 61 Second lens section 62 Second lens peripheral wall 62a end 62b 2nd upper opening (notch) 62c 2nd lower opening (notch) 63 Second lens mounting section S1 1st space S2 2nd space

Claims

1. Light source section, A support portion that supports the light source portion, A focusing lens that collects the light emitted from the light source, A light-shielding member provided with an irradiation slit that partially allows light focused by the aforementioned focusing lens to pass through, The system includes a projection lens that projects light that has passed through the light-shielding member to form an irradiation pattern, The condensing lens has a first lens portion and a first lens peripheral wall portion that rises from the first lens portion with the first lens portion as the bottom portion. The projection lens has a second lens portion and a second lens peripheral wall portion that rises from the second lens portion with the second lens portion as the bottom portion. The first lens portion, the first lens peripheral wall portion, and the light-shielding member form a first space. The second lens portion, the second lens peripheral wall portion, and the light-shielding member form a second space. An upper opening is formed in the portion located above at least one of the first lens peripheral wall portion and the second lens peripheral wall portion. A vehicle lighting device characterized in that a lower opening is formed in the portion located below the first lens peripheral wall portion or the second lens peripheral wall portion in which the upper opening is formed.

2. A light source unit, A support portion that supports the light source portion, A focusing lens that collects the light emitted from the light source, A light-shielding member provided with an irradiation slit that partially allows light focused by the aforementioned focusing lens to pass through, The system includes a projection lens that projects light that has passed through the light-shielding member to form an irradiation pattern, The condensing lens has a first lens portion and a first lens peripheral wall portion that rises from the first lens portion with the first lens portion as the bottom portion. The projection lens has a second lens portion and a second lens peripheral wall portion that rises from the second lens portion with the second lens portion as the bottom portion. The first lens portion, the first lens peripheral wall portion, and the light-shielding member form a first space. The second lens portion, the second lens peripheral wall portion, and the light-shielding member form a second space. An upper opening is formed in the portion located above at least one of the first lens peripheral wall portion and the second lens peripheral wall portion. The projection lens is formed from a different material than the focusing lens. The aforementioned focusing lens is made of polycarbonate. The aforementioned projection lens is made of acrylic, The vehicle light fixture is characterized in that the upper opening is formed in the peripheral wall of the second lens.

3. The peripheral wall portion of the first lens has a first upper opening formed in the upper part and communicating with the first space, and a first lower opening formed in the lower part and communicating with the first space. The vehicle lamp according to claim 1 or 2, characterized in that the second lens peripheral wall portion has a second upper opening formed in the upper part and communicating with the second space, and a second lower opening formed in the lower part and communicating with the second space.

4. The support portion has a mounting portion and a heat dissipation portion. The condensing lens has a first lens mounting portion that extends in a width direction intersecting the optical axis direction from the end of the first lens peripheral wall portion, The light-shielding member has a light-shielding member mounting portion that extends in the width direction, The projection lens has a second lens mounting portion that extends in the width direction from the end of the second lens peripheral wall portion, The vehicle light fixture according to claim 1 or 2, characterized in that the light-gathering lens, the light-shielding member, and the projection lens are fixed to the mounting portion in the order of the first lens mounting portion, the light-shielding member mounting portion, and the second lens mounting portion.

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