JP6352736B2 - Side marker lamp - Google Patents

Description

  The present invention relates to a side marker lamp having a light emitting surface directed to the side of a vehicle.

  With the recent popularization of organic EL panels, proposals have been made to apply this to the light source of a vehicular lamp (for example, see Patent Document 1). The organic EL panel is generally configured by forming an organic EL light emitting layer on one side of a transparent substrate and sealing it with a sealing plate. Such an organic EL panel functions as a planar light source and can be used for decoration of a headlamp as described in Patent Document 1, for example, but is used as a part of a rear combination lamp or as a side marker lamp. You can also

JP 2011-150888 A

  By the way, when the organic EL panel is used as a vehicle lamp in this way, it may be functionally or designally required to emit light in a predetermined direction or, conversely, not to emit light in a predetermined direction. is there. For example, when an organic EL panel is applied to a red side marker lamp, emission of the red light to the front of the vehicle is regulated by law. This is because the irradiation with the red light may give a peripheral driver a misrecognition in the vehicle longitudinal direction. However, since the directivity characteristic of light emission in the organic EL light emitting layer (hereinafter also referred to as “light distribution characteristic”) is almost omnidirectional Lambertian, it is not easy to cope with such regulations.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a side marker lamp using an organic EL as a light source for practical use.

  One embodiment of the present invention is a side marker lamp having a light emitting surface directed toward the side of a vehicle. This side marker lamp is arranged on the outside of the organic EL light emitting layer, which is a planar light source obtained by forming an organic EL light emitting layer whose light emission directivity is Lambertian on a substrate facing the vehicle side. A light control member that includes a lens and suppresses the light emitted from the planar light source toward the front of the vehicle.

  According to this aspect, the light control member is provided for the organic EL light emitting layer facing the vehicle side. Thereby, the light emitted from the organic EL light emitting layer is refracted in the process of passing through the lens of the light control member, and the direction to the front of the vehicle is suppressed. For this reason, the organic EL light emitting layer can be applied without problem to a side marker lamp whose light distribution to the front of the vehicle is restricted. That is, a side marker lamp using an organic EL as a light source can be practically used.

  Specifically, the light control member may include a light shielding portion that partially blocks light emitted from the organic EL light emitting layer. And you may suppress the directivity of the light ahead of a vehicle by setting arrangement of a shade part based on the shape of a lens. According to this aspect, by appropriately setting the arrangement of the light-shielding portion in consideration of light refraction by the lens, specific light traveling toward the front of the vehicle is effectively transmitted while allowing light emission to the side of the vehicle. Can be blocked.

  Alternatively, the light control member may suppress the direction of the light toward the front of the vehicle by setting the arrangement of the light emitting unit in the organic EL light emitting layer based on the shape of the lens. According to this aspect, by appropriately setting the arrangement of the light emitting unit in consideration of light refraction by the lens, the emission of light toward the front of the vehicle is suppressed while the emission of light toward the vehicle side is promoted. be able to.

  Furthermore, the light control member is provided with a reflection part that reflects light emitted from the organic EL light emitting layer in a part of the lens, and sets the arrangement of the reflection part based on the shape of the lens. May be suppressed. According to this aspect, by appropriately setting the arrangement of the reflecting portion in consideration of the refraction and reflection of light by the lens, the emission of light toward the front of the vehicle is promoted while promoting the emission of light toward the side of the vehicle. Can be suppressed.

  The shape of the lens may be set to a shape that refracts light emitted from the organic EL light emitting layer toward the front of the vehicle and confines it in the lens. According to this aspect, it is possible to substantially eliminate emission of specific light toward the front of the vehicle.

  More specifically, the lens is configured by arranging a plurality of columnar lens portions having a triangular cross section having a vertex on the side opposite to the organic EL light emitting layer in the vehicle front-rear direction, and the surface of the columnar lens portion on the vehicle front side. A light-shielding portion may be formed. According to this aspect, it becomes possible to substantially eliminate the emission of light toward the front of the vehicle, as shown in an embodiment described later.

  In that case, the columnar lens portion is set so that the angle between the front surface of the vehicle and the substrate is within a range of 30 degrees to 45 degrees, and the angle between the rear surface of the vehicle and the substrate is 65 degrees. It is preferably set to be within a range of 70 degrees.

  Alternatively, the lens may have a notch surface that forms an air layer having a triangular cross section on the surface of the organic EL light emitting layer facing the light emitting portion. The angle formed by the vehicle rear surface constituting the cut-out surface and the substrate may be set to be not less than 6.5 degrees and less than 90 degrees. According to this aspect, it becomes possible to substantially eliminate the emission of light toward the front of the vehicle, as shown in an embodiment described later.

  It should be noted that any combination of the above-described constituent elements and a representation of the present invention converted between a method, an apparatus, a system, etc. are also effective as an aspect of the present invention.

  According to the present invention, a side marker lamp using an organic EL as a light source can be practically used.

It is a schematic diagram showing the installation aspect of the side marker lamp which concerns on 1st Embodiment. It is a figure which shows schematically the structure of the organic electroluminescent panel used for the light source of a side marker lamp. It is a schematic diagram showing the structure of the lens as a light control member. It is a schematic diagram showing the structure of the light control member which concerns on the modification of 1st Embodiment. It is a figure which shows the structure of the principal part of the side marker lamp which concerns on 2nd Embodiment. It is a figure which shows the structure of the principal part of the side marker lamp which concerns on 3rd Embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or equivalent components are denoted by the same reference numerals, and repeated description is appropriately omitted.

[First Embodiment]
FIG. 1 is a schematic diagram illustrating an installation mode of the side marker lamp according to the first embodiment. FIG. 1A shows the arrangement of side marker lamps in the vehicle, and FIG. 1B is an enlarged view of part A of FIG. 1A, showing the arrangement of organic EL panels in the side marker lamps. FIG. 1B shows a side marker lamp at the rear left side of the vehicle, but the configuration of the side marker lamp at the rear right side of the vehicle is the same.

  As shown in FIGS. 1A and 1B, the side marker lamp 10 constitutes a part of a rear combination lamp 12 provided at the rear portion of the vehicle 1. The rear combination lamp 12 accommodates a plurality of lamps in a lamp chamber defined between the lamp body 14 and the outer cover 16, and includes a tail lamp, a stop lamp and other lamps in addition to the side marker lamp 10. The outer cover 16 is made of a light-transmitting resin material and transmits light emitted from each lamp. Hereinafter, for convenience, the side marker lamp 10 which is a main part of the present embodiment will be described, and description of other lamps will be omitted.

  As shown in FIG. 1 (B), the side marker lamp 10 has a light emitting surface directed to the side of the vehicle, and is configured by arranging an organic EL panel 20 and a lens 22 in the vehicle width direction. The organic EL panel 20 is a “planar light source” in which an organic EL light emitting layer is formed on a substrate facing the vehicle side, and emits red light in this embodiment. The lens 22 is disposed outside the organic EL light emitting layer, and suppresses the direction of light emitted from the organic EL panel 20 toward the front of the vehicle. That is, although the light distribution characteristic of the organic EL light emitting layer is substantially Lambertian, the lens 22 functions as a “light control member” and suppresses light emission to the front of the vehicle.

That is, in the current regulation (ECE R91) regarding the side marker lamp, the light distribution requirement is “in the case of a red side lamp, at 60 to 90 degrees in the horizontal direction toward the front of the vehicle (θ _L in the figure). In an angular field of view of ± 20 degrees in the vertical direction, the maximum luminous intensity is 0.25 cd or less. ” On the other hand, in the vertical direction of the side marker lamp (corresponding to θ _L = 0 degree on the side of the vehicle), the maximum luminous intensity is set to 25 cd and the minimum luminous intensity is set to 4 cd. Therefore, it is necessary to suppress the light intensity toward the front of the vehicle to about 1 to 6% of the light intensity toward the side of the vehicle. However, since the light distribution characteristic of the organic EL light emitting layer is almost Lambertian, some countermeasure is required. . In the present embodiment, the countermeasure is taken by devising the structure of the side marker lamp, the details of which will be described later.

  FIG. 2 is a diagram schematically showing the configuration of the organic EL panel 20 used as the light source of the side marker lamp 10. 2A is a front view of the organic EL panel 20, and FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A. In the following, for convenience of explanation, the outer cover side (vehicle width direction outer side) is also referred to as “front side” and the side opposite to the outer cover (vehicle width direction inner side) is also referred to as “back side” with reference to the organic EL panel 20. .

  First, the basic configuration of the organic EL panel 20 used in the present embodiment will be described. As shown in FIG. 2A, the organic EL panel 20 has an organic EL light emitting layer 32 formed at the center of one side of a rectangular substrate 30. As shown in FIG. 2B, the organic EL panel 20 includes an anode 34, an organic EL light emitting layer 32, and a cathode 36 stacked on a substrate 30 and sealed so as to seal the organic EL light emitting layer 32 from the outside. A stop plate 38 is provided.

  The substrate 30 is a substrate made of transparent thin film glass. The organic EL light emitting layer 32 is configured by laminating a hole injection layer, a hole transport layer, an organic light emitting layer, and an electron transport layer from the anode 34 side. The organic EL light emitting layer 32 has a rectangular shape in front view according to the substrate 30. A transparent electrode mainly made of indium tin oxide (ITO) or the like is used for the anode 34, and a metal electrode mainly made of aluminum is used for the cathode 36. In the modification, a transparent electrode made of ITO or the like may be used for the cathode 36 as well.

  The anode 34 is a thin-film electrode layer, and is disposed between the substrate 30 and the organic EL light emitting layer 32, and one end thereof extends to one end of the organic EL panel 20. On the other hand, the cathode 36 is a thin-film electrode layer, and is disposed between the organic EL light emitting layer 32 and the sealing plate 38, and one end thereof extends to the other end of the organic EL panel 20. . The anode 34, the organic EL light emitting layer 32, and the cathode 36 are sequentially laminated by, for example, vapor deposition. A terminal of an external power source 40 is connected to the anode 34 and the cathode 36.

  The sealing plate 38 is a flexible substrate made of thin film glass, and the peripheral edge thereof is fixed to the substrate 30 via an adhesive 42. In the present embodiment, a material having translucency is used as the adhesive 42. With such a configuration, the sealing plate 38 and the adhesive 42 constitute a “sealing member” that seals the organic EL light emitting layer 32 from the outside. An inner space 44 of the sealing member is filled with an inert gas. Further, a desiccant 46 is provided so as to be attached to the inner surface of the sealing plate 38.

  With such a configuration, when a voltage is applied to the organic EL panel 20, holes are injected from the anode 34, electrons are injected from the cathode 36, and a fluorescent organic compound or the like is generated by energy generated when they are combined in the organic layer. The organic compound is excited and the organic EL light emitting layer 32 emits light. The light emitted at this time is emitted to the front side through the transparent anode 34 and the substrate 30. That is, the surface of the organic EL panel 20 on the substrate 30 side is the main light emitting surface. The organic EL light emitting layer 32 has a directional characteristic of light emission of Lambertian, but has a high directivity to the front side.

  In this embodiment, the substrate 30 is made of thin glass, but a thin resin film may be used. In addition, since the technique which comprises a flexible organic electroluminescent panel with such a flexible board | substrate is well-known as described also in Unexamined-Japanese-Patent No. 2013-229202 etc., the detailed description is abbreviate | omitted.

  Next, the configuration of the light control member will be described. FIG. 3 is a schematic diagram showing the structure of the lens 22 as a light control member. (A) is an enlarged cross-sectional view of the lens 22 and its periphery, and (B) and (C) show an example of the calculation results obtained in the process of verifying the optimum structure of the lens 22. The arrows in the figure indicate the traveling direction of light emitted from the organic EL panel 20.

  The lens 22 is disposed to face the front side of the organic EL panel 20, that is, the light emitting surface side. The lens 22 is provided so that the surface 48 facing the organic EL panel 20 is flat and substantially parallel to the organic EL light emitting layer 32 (see FIG. 2) (not shown). The lens 22 is configured by arranging a plurality of columnar lens portions 50 having a triangular cross section having a vertex on the side opposite to the facing surface 48 in the vehicle front-rear direction. The columnar lens portion 50 has a front surface 52 facing the front of the vehicle and a rear surface 54 facing the rear of the vehicle, and the front surface 52 is provided with a shading coating 56 (black coating).

  As shown in the figure, by appropriately selecting the inclination angle θ1 of the rear surface 54 and the inclination angle θ2 of the front surface 52 with respect to the opposing surface 48, emission from the organic EL panel 20 to the front of the vehicle is suppressed. . FIG. 3B shows the calculation result when the tilt angles θ1 and θ2 are both 60 degrees, and FIG. 3C shows the calculation result when the tilt angle θ1 is 60 degrees and the tilt angle θ2 is 30 degrees. It is shown.

From the calculation result, in order to suppress the emission of light toward the front of the vehicle (θ _L ≧ 60 degrees in FIG. 1A) based on the above-mentioned laws and regulations, the inclination angle θ1 of the rear surface 54 is set to 60 degrees or more. It turned out to be preferable. Then, it has been found that it is desirable to set the inclination angle θ1 within the range of 65 degrees to 70 degrees in order to ensure the luminous intensity to the side of the vehicle and more reliably suppress the luminous intensity to the front of the vehicle.

  On the other hand, it has been found that the inclination angle θ2 of the front surface 52 is preferably in the range of 30 ° to 45 ° in order to secure a certain degree of light intensity to the side of the vehicle and to the rear of the vehicle. That is, for example, when the inclination angle θ2 is 60 degrees, light cannot be emitted in a range of about 60 degrees to 90 degrees toward the rear of the vehicle. If the inclination angle θ2 is 45 degrees, light cannot be emitted in the range of about 68 degrees to 90 degrees toward the rear of the vehicle. If the inclination angle θ2 is 30 degrees, light cannot be emitted in the range of about 80 to 90 degrees toward the rear of the vehicle. On the other hand, when the inclination angle θ2 is less than 30 degrees, the light shielding range becomes too large, and the emitted light itself is insufficient. For this reason, it is considered that the inclination angle θ2 is preferably in the range of 30 to 45 degrees.

  As described above, according to the present embodiment, the lens 22 as a light control member is provided on the organic EL panel 20 (organic EL light emitting layer 32) facing the vehicle side. And the coating 56 as a light-shielding part is given to the front surface 52 of each columnar lens part 50 which comprises the lens 22. FIG. In such a configuration, the arrangement of the light-shielding portions can be appropriately set by appropriately setting the inclination angles θ1 and θ2 in consideration of light refraction and shielding by the columnar lens portions 50. Accordingly, it is possible to effectively suppress the light traveling toward the front of the vehicle while allowing the light to be emitted to the side of the vehicle. As a result, it is possible to obtain light distribution characteristics that comply with the above-mentioned laws and regulations.

[Modification]
FIG. 4 is a schematic diagram illustrating the structure of a light control member according to a modification of the first embodiment. 4A to 4C show Modifications 1 to 3, respectively. The arrows in the figure indicate the traveling direction of light emitted from the organic EL panel 20.

  In Modification 1 shown in FIG. 4A, a lens 122 is provided instead of the lens 22 of the above embodiment. Then, only one side surface of the columnar lens portion 150 constituting the lens 122 is mirror-finished. That is, a reflective material is deposited on the front surface 52 of the columnar lens portion 150 to form a mirror surface 156 (functioning as a “reflecting portion”), and the light emitted from the organic EL panel 20 is directed toward the front of the vehicle. Is reflected to the rear of the vehicle.

On the other hand, in Modification 2 shown in FIG. 4B, a lens 123 is provided instead of the lens 22 of the above embodiment. Then, in accordance with the triangular step of the columnar lens portion 151 constituting the lens 123, a coating 157 as a light-shielding portion is applied to a part of the back surface of the lens 123 so as to shield light in a stripe shape. Conversely, in Modification 3 shown in FIG. 4C, a coating 158 is applied to the upper surface of the organic EL panel 20 in accordance with the triangular steps of the columnar lens portion 151, and the light emitting portion 160 is regulated in a stripe shape. The shape of these lenses 123 is such that at least the light emitted from the organic EL panel 20 is directed toward the front of the vehicle as defined by the above-mentioned regulations (θ _{L in} FIG. 1: 60 degrees to 90 degrees). Is refracted and confined in the lens 123.

  In Modifications 2 and 3, the coatings 157 and 158 are provided at positions corresponding to the rear surface 54 of the columnar lens portion 151, respectively, but the positional relationship can be adjusted as appropriate. In the third modification, the arrangement of the light emitting portions 160 is not restricted in the form of the coating 158, but the light emitting portions themselves may be formed in stripes.

  Even with the above configuration, it is possible to effectively suppress the light traveling toward the front of the vehicle while allowing the light to be emitted to the side of the vehicle. As a result, it is possible to obtain light distribution characteristics that comply with the above-mentioned laws and regulations.

[Second Embodiment]
FIG. 5 is a diagram illustrating a configuration of a main part of the side marker lamp according to the second embodiment. This figure corresponds to FIG. 3A of the first embodiment. FIG. 5A shows the configuration of the main part, and FIG. 5B shows the calculation method of the optimum shape of the main part. In the following description, differences from the first embodiment will be mainly described, and the configuration of the common parts will be denoted by the same reference numerals and the description thereof will be omitted.

  In the present embodiment, as shown in FIG. 5A, as a result of providing the organic EL panel 220 with the stripe-shaped light shielding portion 250, the light emitting portion 252 is formed in a stripe shape. In this way, the light emitting portion 252 of the organic EL panel 220 can be regulated in a stripe shape by applying a light shielding coating (black coating) as in the third modification shown in FIG. 4C, for example. A lens 222 is disposed opposite to the organic EL panel 220.

  The lens 222 has a notch surface 212 that forms an air layer 210 having a triangular cross section on the surface facing the light emitting portion 252 of the organic EL panel 220 (the organic EL light emitting layer 32 not shown). The angle θ formed by the vehicle rear side surface 254 constituting the cut-out surface 212 and the organic EL panel 20 is set to be 6.5 degrees or more. Such an angle θ is set for the following reason.

That is, as shown in FIG. 5B, assuming that the refractive index of air is n ₁ and the refractive index of the lens 222 is n ₂ , when light is refracted as shown by a two-dot chain line in the figure, The emission of light emitted from the EL panel 220 to the front of the vehicle can be suppressed. When the refraction angle is defined as shown, the following formulas (1) and (2) are established from Snell's law.

n ₁ sinθ ₁ = n ₂ sinθ ₂ (1)
n ₂ sin (θ ₂ + θ) = n ₁ sin θ ₁ ′ (2)
Here, since it is sufficient that the total reflection (θ ₁ ′ = 90 degrees) is obtained at the notch surface 212, θ _{2 ′} is deleted from the above formulas (1) and (2) and θ ₁ ′ = 90 degrees is substituted. Equation (3) is obtained.

θ = sin ⁻¹ (n ₁ / n ₂ ) −sin ⁻¹ (n ₁ / n ₂ sin θ ₁ ) (3)
Here, if there is θ satisfying the above formula (3) with 60 ° ≦ θ ₁ ≦ 90 °, emission of red light toward the front of the vehicle can be prevented. In this embodiment, since the lens 222 is made of acrylic, if the refractive index n ₁ = 1 of air and the refractive index n ₂ = 1.5 of the lens 222 are substituted into the above equation (3), θ ₁ = 90 degrees = 0 degrees, and θ = 6.5 degrees when θ ₁ = 60 degrees. Therefore, it can be seen that the angle θ formed by the vehicle rear side surface 254 constituting the cut-out surface 212 and the organic EL panel 20 should be 6.5 degrees or more and less than 90 degrees.

[Third Embodiment]
FIG. 6 is a diagram illustrating a configuration of a main part of the side marker lamp according to the third embodiment. This figure corresponds to FIG. 3A of the first embodiment. In the following description, differences from the first embodiment will be mainly described, and the configuration of the common parts will be denoted by the same reference numerals and the description thereof will be omitted.

  In the present embodiment, a louver sheet 322 is employed as the light control member. The louver sheet 322 may be a so-called privacy sheet, and has a plurality of louvers 352 arranged in the width direction (vehicle longitudinal direction) of the transparent sheet 350. The transparent sheet 350 is made of a permeable resin sheet such as an acrylic resin, a polyvinyl chloride resin, or a polystyrene resin. The louvers 352 are made of a light shielding material and are arranged in a stripe shape when the transparent sheet 350 is viewed from the front, and a space between adjacent louvers 352 serves as a light transmission path.

In the louver 352, the rear surface of the vehicle is a light-shielding surface 354 that is painted black, and the front surface of the vehicle is a reflective surface 356 that is mirror-finished. For this reason, as illustrated, the light emitted toward the side of the vehicle out of the light from the organic EL panel 20 is transmitted through the transparent sheet 350 as it is. On the other hand, the light emitted toward the vehicle rear side is reflected by the reflection surface 356 of the louver 352. Light emitted toward the front side of the vehicle is blocked by the light shielding surface 354 of the louver 352. However, the light reflected by the reflection surface of the louver 352 is not directed to the range of 60 degrees to 90 degrees in the horizontal direction toward the front of the vehicle (see θ _{L in} FIG. 1A), and adjacent louvers. The interval between 352 is determined.

  Even with the above configuration, it is possible to effectively suppress the light traveling toward the front of the vehicle while allowing the light to be emitted to the side of the vehicle. As a result, it is possible to obtain light distribution characteristics that comply with the above-mentioned laws and regulations.

  As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the above-described embodiment, and the present invention includes a combination or replacement of the configurations of the embodiments as appropriate. Is. Further, it is possible to appropriately change the combination and processing order in the embodiment based on the knowledge of those skilled in the art and to add various modifications such as various design changes to the embodiment, and such a modification has been added. Embodiments may also be included within the scope of the present invention.

  In the first embodiment, an example in which the front surface 52 of the columnar lens unit 50 is subjected to light-shielding coating has been described. In a modification, it may replace with the light shielding coating and may perform mirror surface processing (for example, vapor deposition of a mirror surface material or silver coating).

  In the said embodiment and modification, although an example of the combination of the shape of the light-shielding part and reflection part in a light control member, the light emission part in an organic electroluminescent panel, and a light control member was shown, it is not restricted to them, The light ahead of a vehicle Of course, a combination capable of suppressing the orientation of can be set as appropriate.

  In the above embodiment, the example in which the side marker lamp 10 is configured as a rear side marker lamp has been described, but it may be configured as a front side marker lamp.

  DESCRIPTION OF SYMBOLS 1 Vehicle, 10 Side marker lamp, 14 Lamp body, 16 Outer cover, 20 Organic EL panel, 22 Lens, 30 Board | substrate, 32 Organic EL light emitting layer, 48 Opposite surface, 50 Columnar lens part, 52 Front surface, 54 Rear surface, 56 Coating , 122,123 lens, 150,151 columnar lens part, 156 mirror surface, 157,158 coating, 210 air layer, 212 notch surface, 220 organic EL panel, 222 lens, 250 light shielding part, 252 light emitting part, 322 louver sheet, 350 Transparent sheet, 352 louvers.

Claims (8)

A side marker lamp having a light emitting surface directed toward the side of the vehicle,
A planar light source obtained by forming an organic EL light emitting layer having a directional characteristic of light emission of Lambertian on a substrate facing a vehicle side;
A light control member that includes a lens disposed outside the organic EL light-emitting layer and suppresses the light emitted from the planar light source toward the vehicle front;
A side marker lamp comprising: The light control member is
Including a light shielding part that partially blocks light emitted from the organic EL light emitting layer,
2. The side marker lamp according to claim 1, wherein the arrangement of the light shielding portion is set based on the shape of the lens, thereby suppressing the direction of light toward the front of the vehicle. The light control member is
3. The side marker lamp according to claim 1, wherein the direction of light toward the front of the vehicle is suppressed by setting the arrangement of the light emitting portions in the organic EL light emitting layer based on the shape of the lens. The light control member is
A reflection part that reflects light emitted from the organic EL light emitting layer is partially provided on the lens,
The side marker lamp according to claim 1, wherein the direction of light toward the front of the vehicle is suppressed by setting the arrangement of the reflecting portion based on the shape of the lens.   5. The lens according to claim 1, wherein the shape of the lens is set to a shape that refracts light emitted from the organic EL light emitting layer toward the front of the vehicle and confines the light in the lens. The described side marker lamp. The lens is configured by arranging a plurality of columnar lens portions having a triangular cross section having a vertex on the side opposite to the organic EL light emitting layer in the vehicle front-rear direction,
The side marker lamp according to claim 2, wherein the light shielding portion is formed on a surface of the columnar lens portion on the vehicle front side.   The columnar lens portion is set such that an angle formed by a surface on the vehicle front side and the substrate is within a range of 30 degrees to 45 degrees, and an angle formed by a surface on the vehicle rear side and the substrate is 65 degrees or more. The side marker lamp according to claim 6, wherein the side marker lamp is set to be within a range of 70 degrees. The lens has a cut-out surface that forms an air layer having a triangular cross section on a surface facing the light emitting portion of the organic EL light emitting layer,
3. The angle according to claim 1, wherein an angle formed by a vehicle rear side surface constituting the cut-out surface and the substrate is set to be not less than 6.5 degrees and less than 90 degrees. Side marker lamp.