JP2007087904A - Vehicle lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To light brightly in front of a vehicle lamp while reducing the right and left direction dimensions of a parabolic cylindrical reflecting surface. <P>SOLUTION: The vehicle lamp has a plurality of LEDs 1A, 1B, ..., 1M arranged on a straight line L extending in right and left direction, and has a reflector 2 having a parabolic cylindrical reflecting surface 2A which reflects the light emitted from the plurality of LEDs 1A, 1B, ..., 1M in front of the vehicle lamp. Lenses 3A, 3B, ..., 3M which refract the emitted light from the LEDs 1A, 1B, ..., 1M so that the scattering degree in right and left direction is reduced and the scattering degree in front and rear direction is hardly changed are arranged between the LEDs 1A, 1B, ..., 1M and the parabolic cylindrical reflecting surface 2A. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a parabolic columnar reflecting surface for arranging a plurality of light emitting elements on a straight line extending in the left-right direction of a vehicle lamp and reflecting light emitted from the plurality of light emitting elements to the front side of the vehicle lamp. In particular, the present invention relates to a vehicular lamp that can brightly illuminate the front side of the vehicular lamp while reducing the horizontal dimension of the parabolic reflecting surface.

  Specifically, the present invention relates to a vehicular lamp for irradiating arbitrary light such as infrared light and visible light on the front side of the vehicular lamp.

  Conventionally, a plurality of semiconductor light emitting elements are arranged on a straight line extending in the horizontal direction (left and right direction of the vehicle lamp), and light emitted from the plurality of semiconductor light emitting elements is transmitted in front of the vehicle lamp (of the vehicle lamp). There is known a vehicular lamp provided with a reflector having a parabolic columnar reflecting surface for reflection on the front side. An example of this type of vehicular lamp is described in, for example, Japanese Patent Application Laid-Open No. 2005-56704.

  In the vehicular lamp described in Japanese Patent Application Laid-Open No. 2005-56704, five semiconductor light emitting elements are arranged at predetermined intervals on the focal line of a parabolic columnar reflecting surface extending in the horizontal direction (the left-right direction of the vehicular lamp). It is arranged. Therefore, in the vehicular lamp described in Japanese Patent Application Laid-Open No. 2005-56704, the radiated light from the five semiconductor light emitting elements is converged and reflected by the parabolic columnar reflecting surface in the vertical direction. Horizontal light is irradiated from the reflecting surface.

  In detail, in the vehicular lamp described in Japanese Patent Application Laid-Open No. 2005-56704, the main optical axis of the leftmost semiconductor light emitting element is set to be vertical, and the main optical axis of the right semiconductor light emitting element is higher. The degree of tilting to the right is increased. Therefore, in the vehicular lamp described in Japanese Patent Application Laid-Open No. 2005-56704, the horizontal irradiation light from the parabolic columnar reflecting surface is greatly diffused in the left-right direction, and as a result, a fairly horizontally long light distribution pattern is obtained. ing. That is, according to the vehicular lamp described in Japanese Patent Application Laid-Open No. 2005-56704, a horizontally long light distribution pattern can be obtained while reducing the horizontal dimension of the parabolic columnar reflecting surface.

  As described above, in the vehicular lamp described in Japanese Patent Laid-Open No. 2005-56704, the main optical axis lines of the four semiconductor light emitting elements on the right side are tilted to the right side in order to obtain a horizontally long light distribution pattern. In the case where the width of the light distribution pattern is made narrower than that of the vehicular lamp described in Japanese Patent Application Laid-Open No. 2005-56704 to make the irradiation light brighter, that is, for the vehicle described in Japanese Patent Application Laid-Open No. 2005-56704. In order to form a light distribution pattern that is more concentrated than the lamp, it is conceivable to set the main optical axis of all the semiconductor light emitting elements to be vertical.

  However, even when the main optical axis of all the semiconductor light emitting elements is set to be vertical, the light from the semiconductor light emitting elements is emitted while diffusing at a relatively wide angle, so that it is reflected by the parabolic columnar reflecting surface. The emitted light also diffuses in the left-right direction at a relatively wide angle. Therefore, even when the main optical axis of all the semiconductor light emitting elements is set to be vertical, a horizontally long light distribution pattern still remains. That is, even when the main optical axis of all the semiconductor light emitting elements is set to be vertical, the front side of the vehicular lamp cannot be illuminated sufficiently brightly by the parabolic reflecting surface. That is, a so-called spot-like light distribution pattern that is condensed cannot be formed.

JP 2005-56704 A

  In view of the above problems, the present invention is a vehicle that can brightly illuminate the front side of a vehicular lamp while reducing the lateral dimension of a parabolic columnar reflecting surface, that is, a light distribution pattern that is condensed. The purpose is to provide lighting equipment.

  Specifically, an object of the present invention is to provide a vehicular lamp that can sufficiently illuminate the front side of the vehicular lamp with horizontal light while reducing the horizontal dimension of the parabolic columnar reflecting surface.

  According to the first aspect of the present invention, a parabolic columnar reflecting surface for arranging a plurality of light emitting elements on a straight line extending in the left-right direction and reflecting light emitted from the plurality of light emitting elements to the front side. In a vehicular lamp provided with a reflector having a radiating ratio, a lens for refracting the radiated light from each light emitting element is emitted so that the degree of diffusion in the left-right direction decreases and the degree of diffusion in the front-rear direction hardly changes. There is provided a vehicular lamp characterized by being disposed between an element and the parabolic columnar reflecting surface.

  According to the second aspect of the present invention, the cross-sectional shape of the light emitting element side surface of the lens viewed from the front side or the rear side is convex, and the surface of the lens on the reflector side viewed from the front side or the rear side is convex. The cross-sectional shape is convex, the cross-sectional shape of the surface on the light emitting element side of the lens viewed from the left or right side is concave, and the cross-sectional shape of the surface on the reflector side of the lens viewed from the left or right side is convex The vehicle lamp according to claim 1, wherein the lens is formed.

  According to the invention described in claim 3, the cross-sectional shape of the surface of the lens on the light emitting element side seen from the front side or the rear side is a hyperbola, and the cross section of the surface on the reflector side of the lens seen from the front side or the rear side. The shape is a hyperbola, the cross-sectional shape of the lens side of the lens viewed from the left or right side is an arc or elliptical arc, and the cross-sectional shape of the lens side of the lens viewed from the left or right side is an arc or elliptical arc The vehicular lamp according to claim 2, wherein the lens is formed.

  According to the invention described in claim 4, the curvature of the light emitting element side surface of the lens viewed from the front side or the rear side is made smaller than the curvature of the reflector side surface of the lens viewed from the front side or the rear side. A vehicular lamp according to claim 2 or 3 is provided.

  According to a fifth aspect of the present invention, there is provided the vehicular lamp according to any one of the first to fourth aspects, wherein the light emitting element is disposed on the lens side with respect to the focal point of the lens. .

  According to a sixth aspect of the present invention, there is provided the vehicular lamp according to the fifth aspect, wherein the light emitting element is disposed about 0.2 mm from the focal point of the lens.

  According to the seventh aspect of the present invention, there is provided the vehicular lamp according to any one of the first to sixth aspects, wherein the plurality of lenses are formed by one member.

  In the vehicular lamp according to claim 1, the lens for refracting the radiated light from each light emitting element so that the diffusion degree in the left-right direction decreases and the diffusion degree in the front-rear direction hardly changes, It arrange | positions between the light emitting element and the parabolic columnar reflective surface. In other words, in the vehicular lamp according to claim 1, the emitted light from each light emitting element is refracted by the lens disposed between each light emitting element and the parabolic columnar reflecting surface. The right / left diffusion degree of the refracted light that has passed is reduced more than the right / left diffusion degree of the radiated light from each light emitting element, the degree of diffusion of the refracted light that has passed through each lens in the front / rear direction, The degree of diffusion of the emitted light in the front-rear direction is made substantially equal.

  Therefore, according to the vehicular lamp according to the first aspect, the radiated light from each light-emitting element is reflected by the parabolic columnar reflecting surface without passing through a lens for reducing the degree of diffusion in the left-right direction. The lateral width of the light distribution pattern can be made narrower than the case where the light is directly reflected on the front side, so that the front side of the vehicular lamp can be illuminated brightly. That is, a so-called spot-like light distribution pattern can be formed. Specifically, according to the vehicular lamp of the first aspect, the lateral dimension of the parabolic columnar reflecting surface is made smaller than when no lens for reducing the degree of diffusion in the lateral direction is provided. The front side of the vehicular lamp can be illuminated brightly. In other words, according to the vehicular lamp of the first aspect, the front side of the vehicular lamp is illuminated sufficiently brightly by the condensed light including horizontal light while reducing the horizontal dimension of the parabolic columnar reflecting surface. be able to.

  In the vehicular lamp according to claim 2, the cross-sectional shape of the surface of the lens on the light emitting element side seen from the front side or the rear side is convex, and the cross-sectional shape of the surface on the reflector side of the lens seen from the front side or the rear side. The lens is formed so that is convex. Therefore, the emitted light from the light emitting element can be refracted so as to reduce the degree of diffusion in the left-right direction. That is, the emitted light from the light emitting element can be refracted so that the degree of diffusion of the refracted light that has passed through the lens in the left-right direction is smaller than the degree of diffusion of the emitted light from the light emitting element in the left-right direction.

  Furthermore, in the vehicular lamp according to claim 2, the cross-sectional shape of the surface on the light emitting element side of the lens viewed from the left or right side is concave, and the cross-sectional shape of the surface on the reflector side of the lens viewed from the left or right side is A lens is formed so as to be convex. Therefore, the radiated light from the light emitting element can be refracted so that the degree of diffusion in the front-rear direction hardly changes. That is, the emitted light from the light emitting element can be refracted so that the degree of diffusion of the refracted light passing through the lens in the front-rear direction and the degree of diffusion of the emitted light from the light emitting element in the front-rear direction are substantially equal.

  That is, according to the vehicular lamp according to claim 2, the emitted light from the light emitting element is reduced by the single lens so that the diffusion degree in the left-right direction is reduced and the diffusion degree in the front-rear direction is hardly changed. Can be refracted. In other words, it is necessary to arrange two kinds of lenses on the optical path in order to refract the emitted light from the light emitting element so that the diffusion degree in the left-right direction is reduced and the diffusion degree in the front-rear direction is hardly changed. Can be eliminated.

  In the vehicular lamp according to claim 3, the cross-sectional shape of the surface on the light emitting element side of the lens viewed from the front side or the rear side is a hyperbola, and the cross-sectional shape of the surface on the reflector side of the lens viewed from the front side or the rear side is A lens is formed so as to be a hyperbola. Therefore, the distance between the light emitting element and the lens is shorter than when the cross-sectional shape of the surface on the light emitting element side and the surface on the reflector side of the lens viewed from the front side or the rear side is a curve other than a hyperbola, Further, it is possible to refract the emitted light from the light emitting element so as to reduce the degree of diffusion in the left-right direction while improving the utilization efficiency of the lens surface and the utilization efficiency of the emitted light from the light emitting element on the lens surface. . As a result, it is possible to bring the distribution method of light distribution closer to the intended distribution method of light distribution.

  Furthermore, in the vehicular lamp according to claim 3, the cross-sectional shape of the surface on the light emitting element side of the lens viewed from the left or right side is an arc or an elliptical arc, and the cross section of the surface on the reflector side of the lens viewed from the left or right side The lens is formed so that the shape is an arc or an elliptical arc. For this reason, the distance between the light emitting element and the lens is made shorter than when the cross-sectional shape of the light emitting element side surface and the reflector side surface of the lens viewed from the left or right side is a curve other than an arc or an elliptical arc. And refracting the emitted light from the light emitting element so that the degree of diffusion in the front-rear direction hardly changes while improving the utilization efficiency of the lens surface and the emitted light from the light emitting element on the lens surface. Can do. As a result, it is possible to bring the distribution method of light distribution closer to the intended distribution method of light distribution.

  In the vehicular lamp according to the fourth aspect, the curvature of the surface of the lens on the light emitting element side viewed from the front side or the rear side is smaller than the curvature of the surface on the reflector side of the lens viewed from the front side or the rear side. Therefore, the emitted light from the light emitting element is larger than the curvature of the surface on the light emitting element side of the lens viewed from the front side or the rear side than the curvature of the surface on the reflector side of the lens viewed from the front side or the rear side. It is possible to reduce the ratio of being reflected by the surface of the lens on the light emitting element side. That is, the use efficiency of the emitted light from the light emitting element can be improved as compared with the case where the curvature of the surface on the light emitting element side of the lens is larger than the curvature of the surface on the reflector side of the lens.

  When the light-emitting element is arranged on the focal point of the lens, the refracted light that has passed through the lens is hardly diffused in the left-right direction. As a result, the reflected light irradiated to the front side of the vehicle lamp by the parabolic columnar reflecting surface is also left-right. It becomes a state where it hardly diffuses in the direction, and it becomes impossible to bring the distribution method of light distribution closer to the intended distribution method of light distribution. In view of this point, in the vehicular lamp according to the fifth aspect, the light emitting element is disposed on the lens side from the focal point of the lens. Therefore, it is possible to diffuse the refracted light that has passed through the lens in the left-right direction and the front-rear direction while reducing the degree of diffusion of the refracted light that has passed through the lens in the left-right direction from the degree of diffusion of the light emitted from the light emitting element in the left-right direction. . As a result, it is possible to bring the distribution method of light distribution closer to the intended distribution method of light distribution.

  In the vehicular lamp according to the sixth aspect, the light emitting element is disposed on the lens side about 0.2 mm from the focal point of the lens. Therefore, the refracted light that has passed through the lens can be diffused in the left-right direction at a diffusion angle that forms an angle of about 10 ° with respect to the up-down direction of the vehicle lamp.

  In the vehicular lamp according to the seventh aspect, the plurality of lenses are formed of one member. Therefore, the distance between two adjacent lenses can be made shorter than when a plurality of lenses are formed by separate members. Thereby, the left-right direction dimension of the whole vehicle lamp can be made smaller than the case where a plurality of lenses are formed of separate members.

  Hereinafter, a first embodiment of a vehicular lamp of the present invention will be described. FIG. 1 is a perspective view of a vehicular lamp according to the first embodiment as viewed from the front, left side, and upper side, FIG. 2 is a front view of the vehicular lamp according to the first embodiment, and FIG. 3 is a vehicle according to the first embodiment. It is a left view of a lamp. 4 is a cross-sectional view of the vehicular lamp of the first embodiment as viewed from the left side of FIG. 2, and FIG. 5 is an enlarged view of the vehicular lamp of the first embodiment shown in FIG. 6 is a cross-sectional view of the vehicular lamp according to the first embodiment shown in FIG. 3, and FIG. 7 is an enlarged view of the vehicular lamp according to the first embodiment shown in FIG. 6.

  The vehicular lamp of the first embodiment is disposed at a predetermined position on the front surface of the vehicle so as to face the front of the vehicle. Therefore, the right side of the passenger facing the front of the vehicle corresponds to the left side of the vehicle lamp, the left side of the passenger corresponds to the right side of the vehicle lamp, and the front side of the passenger corresponds to the front side of the vehicle lamp. The rear side of the passenger corresponds to the rear side of the vehicle lamp. The vehicular lamp of the first embodiment is used as a night vision lamp that irradiates infrared light in front of the vehicle.

  1-7, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M are arranged on a straight line L extending in the left-right direction of the vehicular lamp. LED as a light emitting element is shown. In the vehicular lamp according to the first embodiment, infrared light is emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M. In the vehicular lamp according to the embodiment, visible light can be emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M instead. That is, the vehicular lamp of the second embodiment is used as a normal lamp that radiates visible light in front of the vehicle.

  Furthermore, in the vehicular lamp of the first embodiment, the same components as the LED 1A are used as the LEDs 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M. In the vehicular lamp of the first embodiment, for example, 13 LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M are provided. In the vehicular lamp according to the embodiment, any number of two or more LEDs may be provided instead.

  1-7, 2A reflects the light radiated | emitted from LED1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M to the front side of a vehicle lamp. For this reason, reference numeral 2 denotes a parabolic columnar reflecting surface, and 2 denotes a reflector having the parabolic columnar reflecting surface 2A. In the vehicular lamp of the first embodiment, the focal line of the parabolic columnar reflecting surface 2A is made to coincide with the straight line L described above or is arranged in the vicinity of the straight line L.

  In the vehicular lamp of the first embodiment in which infrared light is emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M, the parabolic columnar reflecting surface 2A Is coated or formed of metal such as gold, silver, copper, etc., but visible light is emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M. In the vehicular lamp according to the second embodiment, the parabolic columnar reflecting surface 2A can be coated or formed with a metal such as aluminum instead.

  Furthermore, in FIGS. 1-7, 3A has shown the lens part for refracting the emitted light from LED1A, 3B has shown the lens part for refracting the emitted light from LED1B, 3C is LED1C. The lens part for refracting the radiated light from is shown. 3D shows a lens unit for refracting the emitted light from the LED 1D, 3E shows a lens unit for refracting the emitted light from the LED 1E, and 3F shows a lens for refracting the emitted light from the LED 1F. The lens part is shown. 3G represents a lens unit for refracting the emitted light from the LED 1G, 3H represents a lens unit for refracting the emitted light from the LED 1H, and 3I represents a light for refracting the emitted light from the LED 1I. The lens part is shown. 3J represents a lens unit for refracting the emitted light from the LED 1J, 3K represents a lens unit for refracting the emitted light from the LED 1K, and 3L represents a light for refracting the emitted light from the LED 1L. Reference numeral 3M denotes a lens unit. Reference numeral 3M denotes a lens unit for refracting radiated light from the LED 1M. Reference numeral 3 denotes a lens unit in which lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M are integrally formed.

  In the vehicular lamp of the first embodiment, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M are integrally formed by one member. In the vehicle lamp of the fourth embodiment, each of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M is formed as a separate member instead. It is also possible to do.

  In the vehicular lamp of the first embodiment, the lens portions 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M are formed in the same shape as the lens portion 3A.

  1 to 7, reference numeral 4 denotes a substrate for supporting the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M and the lens unit 3. Reference numeral 5 denotes a bottom plate for supporting the reflector 2 and the substrate 4. In the vehicle lamp of the first embodiment, the reflector 2 and the bottom plate 5 are connected by, for example, a connecting member (not shown). However, in the vehicle lamp of the fifth embodiment, the reflector 2 and the bottom plate 5 are connected. It is also possible to form a single member.

  In the vehicular lamp of the first embodiment, as shown in FIGS. 1 and 6A, the lens portion 3A is disposed between the LED 1A and the parabolic columnar reflecting surface 2A, and the lens portion 3B is connected to the LED 1B. The lens portion 3C is disposed between the LED 1C and the parabolic columnar reflecting surface 2A, and the lens unit 3D is disposed between the LED 1D and the parabolic columnar reflecting surface 2A. The lens unit 3E is disposed between the LED 1E and the parabolic columnar reflecting surface 2A, and the lens unit 3F is disposed between the LED 1F and the parabolic columnar reflecting surface 2A. Further, the lens unit 3G is disposed between the LED 1G and the parabolic columnar reflecting surface 2A, the lens unit 3H is disposed between the LED 1H and the parabolic columnar reflecting surface 2A, and the lens unit 3I is disposed between the LED 1I and the parabolic columnar reflecting surface. The lens unit 3J is disposed between the LED 1J and the parabolic columnar reflecting surface 2A, the lens unit 3K is disposed between the LED 1K and the parabolic columnar reflecting surface 2A, and the lens unit 3L. Is disposed between the LED 1L and the parabolic columnar reflecting surface 2A, and the lens portion 3M is disposed between the LED 1M and the parabolic columnar reflecting surface 2A.

  Further, in the vehicular lamp of the first embodiment, as shown in FIGS. 4B and 5, the emitted light from the LED 1G is the front-rear direction of the emitted light from the LED 1G (see FIGS. 4B and 5). Refracted by the lens unit 3G so that the degree of diffusion in the right and left direction) hardly changes. As a result, as shown in FIG. 4B, when the emitted light from the LED 1G is reflected by the parabolic columnar reflecting surface 2A, it becomes horizontal light and becomes the front side of the vehicle lamp (the right side of FIG. 4B). ).

  Although not shown, similarly, the emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M is emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, The lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and the like so that the degree of diffusion in the front-rear direction of the emitted light from 1I, 1J, 1K, 1L, 1M hardly changes. Refracted by 3M. As a result, when the radiated light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is reflected by the parabolic reflecting surface 2A, it becomes horizontal light and becomes a vehicle. Irradiates the front of the lamp.

  On the other hand, in the vehicular lamp according to the first embodiment, as shown in FIGS. 6B and 7, the emitted light from the LED 1G is the left-right direction of the emitted light from the LED 1G (see FIGS. 6B and 7). Refracted by the lens unit 3G so as to reduce the degree of diffusion in the right and left direction).

  Similarly, the emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, It is refracted by the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M so that the degree of diffusion in the left-right direction of the emitted light from 1K, 1L, and 1M decreases. .

  In other words, in the vehicular lamp according to the first embodiment, the degree of diffusion in the left-right direction of the vehicular lamp is reduced (see FIG. 7), and the degree of diffusion in the front-rear direction of the vehicular lamp is hardly changed. (Refer to FIG. 5), lenses 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M for refracting radiated light from lenses 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M are LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M and a parabolic columnar reflecting surface 2A (see FIG. 6A).

  That is, in the vehicular lamp of the first embodiment, it is disposed between the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M and the parabolic columnar reflecting surface 2A. By the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M, the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, and 1J , 1K, 1L, 1M refracted light is refracted, so that the refracted light that has passed through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M Of the light emitted from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M is reduced (see FIG. 7). Reference), lens portion 3A, B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M, the degree of diffusion in the front-rear direction of the refracted light, and the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, The degree of diffusion in the front-rear direction of the emitted light from 1H, 1I, 1J, 1K, 1L, and 1M is made substantially equal (see FIG. 5).

  Therefore, according to the vehicular lamp of the first embodiment, the emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M is emitted from the vehicular lamp. The vehicle by the parabolic columnar reflecting surface 2A without passing through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M for reducing the degree of diffusion in the left-right direction. Compared with the case where the light is directly reflected on the front side of the lamp, the width of the light distribution pattern is narrowed to collect the irradiation light, and thereby the front side of the vehicle lamp can be illuminated brightly. That is, it is possible to form a so-called spot-like light distribution pattern in which the irradiation light is condensed.

  Specifically, according to the vehicular lamp of the first embodiment, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, and 3I for reducing the degree of diffusion in the left-right direction of the vehicular lamp. , 3J, 3K, 3L, and 3M can be illuminated more brightly on the front side of the vehicular lamp while reducing the horizontal dimension of the parabolic columnar reflecting surface 2A. That is, according to the vehicular lamp of the first embodiment, the front side of the vehicular lamp can be illuminated sufficiently brightly with horizontal light while reducing the horizontal dimension of the parabolic columnar reflecting surface 2A. Specifically, the area of an opening (not shown) formed in the front portion of the vehicle to irradiate the front of the vehicle with the light emitted from the vehicular lamp of the first embodiment disposed inside the vehicle. While being small, the front side of the vehicular lamp can be illuminated sufficiently brightly by horizontal light.

  FIG. 8 is a component diagram of the LED 1A of the vehicular lamp according to the first embodiment. Specifically, FIG. 8A is a plan view of the LED 1A, FIG. 8B is a left side view of the LED 1A, and FIG. 8C is a cross-sectional view of the LED 1A. As shown in FIG. 8, in the vehicular lamp of the first embodiment, in order to illuminate the front side of the vehicular lamp sufficiently brightly, one LED 1A is provided with three light emitters 1A1, 1A2, 1A3, The light emitters 1A1, 1A2, and 1A3 are sealed with a material having a diffusive property. As described above, the LEDs 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M are also configured similarly to the LED 1A shown in FIG.

  In the vehicular lamp of the first embodiment, three light emitters are provided for each of the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M. In the vehicular lamp of the sixth embodiment, instead of a sufficiently bright one light emitter, LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, 1M It is also possible to provide each.

  Specifically, in the vehicular lamp according to the first embodiment, as shown in FIG. 7, the cross-sectional shape of the surface of the lens portion 3G on the LED 1G side (lower side in FIG. 7) as viewed from the front side of the vehicular lamp is convex. The lens portion 3G is formed so that the cross-sectional shape of the surface of the lens portion 3G on the reflector 2 side (upper side in FIG. 7) as seen from the front side of the vehicle lamp is convex. Therefore, the emitted light from the LED 1G can be refracted by the lens 3G so that the degree of diffusion in the left-right direction (left-right direction in FIG. 7) of the vehicular lamp is reduced. That is, from the LED 1G, the degree of diffusion of the refracted light that has passed through the lens 3G in the left-right direction (left-right direction in FIG. 7) is smaller than the degree of diffusion of the emitted light from the LED 1G in the left-right direction (left-right direction in FIG. 7). Can be refracted by the lens 3G. Specifically, in the vehicular lamp of the first embodiment, as shown in FIG. 7, the diffusion angle of the refracted light that has passed through the lens 3G is about 20 ° (left 10 ° to right 10 °). The radiated light from the LED 1G is refracted by the lens 3G.

  Similarly, in the vehicular lamp of the first embodiment, as shown in FIG. 6 (A), the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I viewed from the front side of the vehicular lamp. 3J, 3K, 3L, and 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M side (lower side in FIG. 6A) have a convex cross-sectional shape. The lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M on the reflector 2 side (upper side of FIG. 6A) viewed from the front side of the vehicular lamp. Lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M are formed so that the cross-sectional shape of the surface becomes convex. Therefore, the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M are so reduced that the degree of diffusion of the vehicle lamp in the left-right direction (the left-right direction in FIG. 6A) decreases. Can be refracted by lenses 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M.

  That is, the degree of diffusion in the left-right direction (left-right direction in FIG. 6A) of the refracted light that has passed through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M LED 1A so as to be smaller than the degree of diffusion of the emitted light from LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M in the left-right direction (left-right direction in FIG. 6A). , 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M can be refracted. Specifically, in the vehicular lamp of the first embodiment, the diffusion angle of the refracted light that has passed through the lenses 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M is about The emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is emitted from the lenses 3A, 3B, and 3C so as to be 20 ° (left 10 ° to right 10 °). , 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M.

  Further, in the vehicular lamp of the first embodiment, as shown in FIG. 5, the cross-sectional shape of the surface of the lens portion 3G on the LED 1G side (lower side in FIG. 5) viewed from the left side of the vehicular lamp is concave. The lens portion 3G is formed so that the cross-sectional shape of the surface of the lens portion 3G on the reflector 2 side (upper side in FIG. 5) viewed from the left side of the vehicle lamp is convex. Therefore, the radiated light from the LED 1G can be refracted by the lens portion 3G so that the diffusion degree of the vehicle lamp in the front-rear direction (left-right direction in FIG. 5) hardly changes. That is, the degree of diffusion of the refracted light that has passed through the lens unit 3G in the front-rear direction (left-right direction in FIG. 5) and the degree of diffusion of the emitted light from the LED 1G in the front-rear direction (left-right direction in FIG. 5) are substantially equal. The light emitted from the LED 1G can be refracted by the lens unit 3G.

  Similarly, in the vehicular lamp according to the first embodiment, the LEDs 1A of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M viewed from the left side of the vehicular lamp. 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M side (the lower side of the vehicular lamp) has a concave cross-sectional shape, and the lens portion viewed from the left side of the vehicular lamp 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M so that the cross-sectional shape of the surface on the reflector 2 side (upper side of the vehicle lamp) is convex. , 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M are formed. Therefore, the radiated light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is used as the lens unit 3A, so that the degree of diffusion in the front-rear direction of the vehicular lamp is hardly changed. It can be refracted by 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M.

  That is, the degree of diffusion in the front-rear direction of the refracted light that has passed through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M, and the LEDs 1A, 1B, 1C, 1D, 1E, LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K so that the degree of diffusion in the front-rear direction of the emitted light from 1F, 1H, 1I, 1J, 1K, 1L, 1M is substantially equal. , 1L, 1M can be refracted by the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M.

  That is, according to the vehicular lamp of the first embodiment, the left and right directions of the vehicular lamp by the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M. LED 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H so that the degree of diffusion of the LED lamp decreases (see FIG. 7) and the degree of diffusion in the front-rear direction of the vehicular lamp hardly changes (see FIG. 5). , 1I, 1J, 1K, 1L, 1M can be refracted. In other words, the LEDs 1A, 1B, and 1C are arranged so that the degree of diffusion in the left-right direction of the vehicle lamp is reduced (see FIG. 7) and the degree of diffusion in the front-rear direction of the vehicle lamp is hardly changed (see FIG. 5). , 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, The need to arrange lenses other than 3J, 3K, 3L, and 3M on each optical path can be eliminated.

  More specifically, in the vehicular lamp of the first embodiment, as shown in FIG. 7, the cross-sectional shape of the surface of the lens portion 3G on the LED 1G side (lower side in FIG. 7) viewed from the front side of the vehicular lamp is The lens portion 3G is formed such that the cross-sectional shape of the surface of the lens portion 3G on the reflector 2 side (upper side in FIG. 7) is a hyperbola when viewed from the front side of the vehicular lamp. Therefore, when the cross-sectional shapes of the LED 1G side (lower side in FIG. 7) and the reflector 2 side (upper side in FIG. 7) of the lens unit 3G viewed from the front side of the vehicle lamp are curves other than hyperbola. In addition, the distance between the LED 1G and the lens unit 3G is shortened, and the use efficiency of the surface of the lens unit 3G and the use efficiency of the radiated light from the LED 1G on the surface of the lens unit 3G are improved. The light emitted from the LED 1G can be refracted by the lens unit 3G so that the degree of diffusion in the left-right direction (left-right direction in FIG. 7) decreases.

  Similarly, in the vehicular lamp of the first embodiment, as shown in FIG. 6 (A), the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I viewed from the front side of the vehicular lamp. 3J, 3K, 3L, and 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M side (lower side in FIG. 6A) are hyperbolic. The surface of the reflector 2 side (upper side of FIG. 6A) of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M viewed from the front side of the vehicle lamp The lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M are formed so that the cross-sectional shape of FIG.

  Therefore, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, as viewed from the front side of the vehicle lamp When the cross-sectional shapes of the surfaces on the 1I, 1J, 1K, 1L, and 1M sides (the lower side in FIG. 6A) and the reflector 2 side (the upper side in FIG. 6A) are curves other than the hyperbola LED 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M and lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L , 3M, and the surface utilization efficiency of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M and the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3 , 3M surface 1D, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M, while improving the efficiency of use of the emitted light, the degree of lateral diffusion of the vehicle lamp In order to decrease, the emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M is converted into the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I. , 3J, 3K, 3L, 3M.

  Furthermore, in the vehicular lamp of the first embodiment, as shown in FIG. 5, the cross-sectional shape of the surface of the lens portion 3G on the LED 1G side (lower side of FIG. 5) viewed from the left side of the vehicular lamp is an arc or an elliptical arc. Thus, the lens portion 3G is formed so that the cross-sectional shape of the surface of the lens portion 3G on the reflector 2 side (upper side in FIG. 5) viewed from the left side of the vehicle lamp is an arc or an elliptical arc. Therefore, the cross-sectional shapes of the LED 1G side (lower side in FIG. 5) and the reflector 2 side (upper side in FIG. 5) of the lens unit 3G viewed from the left side of the vehicle lamp are curves other than an arc or an elliptical arc. The distance between the LED 1G and the lens unit 3G is shorter than in the case of the vehicle, and the use efficiency of the surface of the lens unit 3G and the use efficiency of the emitted light from the LED 1G on the surface of the lens unit 3G are improved. The radiated light from the LED 1G can be refracted by the lens unit 3G so that the degree of diffusion of the lamp in the front-rear direction (left-right direction in FIG. 5) hardly changes.

  Similarly, in the vehicular lamp according to the first embodiment, the LEDs 1A of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M viewed from the left side of the vehicular lamp. 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M side cross-sectional shapes are arcs or elliptical arcs, and the lens portions 3A, 3B, 3C, as viewed from the left side of the vehicular lamp. The lens portions 3A, 3B, 3C, 3D, 3E, 3F, and 3H are formed so that the cross-sectional shape of the 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M surfaces on the reflector 2 side is an arc or an elliptical arc. , 3I, 3J, 3K, 3L, and 3M are formed.

  Therefore, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, as seen from the left side of the vehicle lamp The LED 1A, 1B, 1C, 1D, 1E, 1F, 1H, LED 1A, 1B, 1C, 1D, 1E, 1F, 1H, LED 1A, 1J, 1K, 1L, 1M, and the reflector 2 have a cross-sectional shape other than an arc or an elliptical arc. 1I, 1J, 1K, 1L, and 1M and the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M, and the lens portions 3A, 3M, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M surface utilization efficiency and lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L LED1 on the surface of 3M , 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M while improving the utilization efficiency of the radiated light so that the degree of diffusion in the front-rear direction of the vehicular lamp hardly changes. The emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is converted into lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, It can be refracted by 3L and 3M.

  In detail, in the vehicular lamp of the first embodiment, as shown in FIG. 7, the curvature of the surface of the lens portion 3G on the LED 1G side (lower side in FIG. 7) is the reflector 2 side of the lens portion 3G. It is smaller than the curvature of the surface (upper side in FIG. 7). Therefore, the radiation from the LED 1G is larger than the case where the curvature of the surface of the lens portion 3G on the LED 1G side (lower side in FIG. 7) is larger than the curvature of the surface on the reflector 2 side (upper side in FIG. 7) of the lens portion 3G. It is possible to reduce the rate at which light is reflected to the LED 1G side (lower side in FIG. 7) by the surface of the lens portion 3G on the LED 1G side (lower side in FIG. 7). That is, the radiation from the LED 1G is larger than the case where the curvature of the surface of the lens portion 3G on the LED 1G side (lower side of FIG. 7) is larger than the curvature of the surface of the lens portion 3G on the reflector 2 side (upper side of FIG. 7). Light utilization efficiency can be improved.

  Similarly, in the vehicular lamp of the first embodiment, as shown in FIG. 6A, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M The curvatures of the surfaces of the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M (lower side in FIG. 6A) are the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M are made smaller than the curvature of the surface on the reflector 2 side (upper side in FIG. 6A).

  Therefore, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, The curvature of the surface on the 1M side (lower side of FIG. 6A) is the reflector 2 side of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M (FIG. 6 ( The emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is emitted from the lens unit 3A, rather than the case of being larger than the curvature of the upper surface A). 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, 1M side (FIG. 6 ( LEDs 1A, 1B, 1C, 1D, by the lower side of A) E, can 1F, 1H, 1I, 1J, 1K, 1L, it is possible to reduce the percentage it would be reflected in the (lower side in FIG. 6 (A)) 1M side.

  In other words, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, The curvature of the surface on the 1M side (lower side of FIG. 6A) is the reflector 2 side of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M (FIG. 6 ( The utilization efficiency of the emitted light from the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M is improved as compared with the case where the curvature is larger than the curvature of the upper surface A). Can be made.

  More specifically, in the vehicular lamp of the first embodiment, as shown in FIG. 7, the LED 1G is disposed on the lens unit 3G side (upper side in FIG. 7) from the focal point of the lens unit 3G. Therefore, while reducing the degree of diffusion of the refracted light that has passed through the lens unit 3G in the left-right direction (left-right direction in FIG. 7) from the degree of diffusion of radiated light from the LED 1G in the left-right direction (left-right direction in FIG. 7), Refracted light that has passed through can be diffused in the left-right direction of the vehicle lamp (left-right direction in FIG. 7), and further, as shown in FIG. It can be diffused (in the left-right direction in FIG. 5).

  Further, in the vehicular lamp of the first embodiment, as described above, the LED 1G is disposed on the lens unit 3G side (the upper side in FIG. 7) from the focal point of the lens unit 3G, and thus the LED 1G is the focal point of the lens unit 3G. The utilization efficiency of the radiated light from LED1G can be improved rather than the case where it arrange | positions above. Specifically, as shown in FIG. 7, when the LED 1G is disposed on the focal point of the lens unit 3G, the light emitted at an angle β with respect to the main optical axis of the LED 1G is emitted from the lens unit 3G. In contrast, the vehicular lamp according to the first embodiment in which the LED 1G is disposed on the lens unit 3G side (the upper side in FIG. 7) with respect to the focal point of the lens unit 3G can be used, with respect to the main optical axis of the LED 1G. Thus, the light emitted at an angle α (> β) can be used in the lens unit 3G.

  Furthermore, in the vehicular lamp according to the first embodiment, as described above, the LED 1G is disposed closer to the lens unit 3G (upper side in FIG. 7) than the focal point of the lens unit 3G. The possibility that the image of the light emitting portion of the LED 1G is irradiated as it is as in the case where the LED 1G is disposed above can be reduced. That is, in the vehicular lamp of the first embodiment in which the LED 1G is disposed on the lens unit 3G side (upper side in FIG. 7) from the focal point of the lens unit 3G, the image of the light emitting unit of the LED 1G can be blurred and irradiated. .

  Similarly, in the vehicular lamp according to the first embodiment, as shown in FIG. 6A, LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M are lens portions. From the focal points (not shown) of 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J , 3K, 3L, 3M (upper side in FIG. 6A).

  Therefore, the degree of diffusion of the refracted light that has passed through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M in the left-right direction (left-right direction in FIG. 6A) is determined by the LED 1A. , 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M while reducing the degree of diffusion in the left-right direction (left-right direction in FIG. 6A), the lens portion 3A , 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M can be diffused in the left-right direction of the vehicle lamp (left-right direction in FIG. 6A) Further, the refracted light that has passed through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M is diffused in the front-rear direction of the vehicle lamp (left-right direction in FIG. 3). be able to.

  In addition, the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M are the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, More efficient use of emitted light from LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M than when placed on a 3M focal point (not shown) Can be made.

  Further, the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M are the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, The images of the light emitting portions of the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M are irradiated as they are when they are arranged on a 3M focal point (not shown). The risk of being lost can be reduced.

  Preferably, in the vehicular lamp of the first embodiment, as shown in FIG. 7, the LED 1G is disposed about 0.2 mm from the focal point of the lens unit 3G on the lens unit 3G side (upper side in FIG. 7). Therefore, the refracted light that has passed through the lens portion 3G has a diffusion angle that forms an angle of about 10 ° with respect to the vertical direction of the vehicle lamp (vertical direction in FIG. 7). ) Can be diffused.

  Similarly, in the vehicular lamp according to the first embodiment, as shown in FIG. 6A, LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1H, 1I, 1J, 1K, 1L, and 1M are lens portions. 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, 3M from the focal point (not shown) Lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H , 3I, 3J, 3K, 3L, 3M (upper side in FIG. 6A). Therefore, the refracted light that has passed through the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3H, 3I, 3J, 3K, 3L, and 3M is moved in the vertical direction of the vehicle lamp (the vertical direction in FIG. 6A). Can be diffused in the left-right direction (the left-right direction in FIG. 6A) of the vehicular lamp with a diffusion angle of about 10 °.

  In the vehicular lamp of the first embodiment, as described above, the LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M are the lens portions 3A, 3B, 3C, From the focus of 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M, about 0.2 mm Lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, Although arranged on the 3L, 3M side (upper side of FIG. 6A), in the modified example of the vehicular lamp of the first embodiment, for example, LEDs 1A, 1B, 1C, an arbitrary distance other than 0.2 mm are provided. 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M from the focal points of the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M Lens part 3A, 3B, 3C, 3D, 3E, 3F, 3G 3H, it is also possible to arrange 3I, 3J, 3K, 3L, the 3M side (upper side in FIG. 6 (A)).

  FIG. 9 is a view showing a light distribution pattern of the vehicular lamp according to the first embodiment. The curve in FIG. 9 shows a line connecting points having the same brightness. In the light distribution pattern of the vehicular lamp of the first embodiment shown in FIG. 9, the center side of FIG. 9 is brighter than the outer peripheral side of FIG. Since the vehicular lamp according to the first embodiment is configured as described above, it is possible to form an ideal light distribution pattern that is strongly condensed in a spot shape as shown in FIG. Therefore, according to the vehicular lamp of the first embodiment, the front of the vehicle is irradiated with the light emitted from the vehicular lamp of the first embodiment disposed inside the vehicle. While reducing the area of the opening (not shown) to be formed, the front side of the vehicular lamp can be illuminated sufficiently brightly with infrared light, and the night vision ability can be improved.

  Hereinafter, a seventh embodiment of the vehicular lamp of the present invention will be described. The vehicular lamp of the seventh embodiment is configured in the same manner as the vehicular lamp of the first embodiment described above, except for the points described below. Therefore, according to the vehicular lamp of the seventh embodiment, the same effects as those of the vehicular lamp of the first embodiment described above can be obtained except for the points described below.

  10 is a perspective view of the vehicular lamp according to the seventh embodiment when viewed from the front, left side, and upper side, FIG. 11 is a front view of the vehicular lamp according to the seventh embodiment, and FIG. 12 is a vehicle according to the seventh embodiment. It is sectional drawing which looked at the lamp from the left side of FIG.

  10-12, 11A, 11B, 11C has shown the LED as a light emitting element arranged on the straight line (not shown) extended in the left-right direction of a vehicle lamp. In the vehicular lamp of the seventh embodiment, the same components as the LED 11A are used as the LEDs 11B and 11C. In the vehicle lamp of the first embodiment described above, 13 LEDs 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K, 1L, and 1M are provided. In the vehicle lamp of the embodiment, three LEDs 11A, 11B, and 11C are provided.

  10-12, 12A has shown the parabolic columnar reflective surface for reflecting the light radiated | emitted from LED11A, 11B, 11C to the front side of a vehicle lamp, 12B is the light radiated | emitted from LED11A Shows a rotating parabolic reflecting surface for reflecting the light emitted from the LED 11C to the left front side of the vehicular lamp, and shows a rotating parabolic reflecting surface for reflecting the light emitted from the LED 11C to the left front side of the vehicular lamp. Yes. Reference numeral 12D denotes a bottom plate portion, and reference numeral 12 denotes a reflector member having a parabolic columnar reflecting surface 12A, reflecting surfaces 12B and 12C, and a bottom plate portion 12D.

  Furthermore, in FIGS. 10-12, 13A has shown the lens part for refracting the radiated light from LED11A, 13A1, 13A2 has shown the leg part for fixing lens part 13A. Reference numeral 13B denotes a lens part for refracting the emitted light from the LED 11B, and reference numerals 13B1 and 13B2 denote leg parts for fixing the lens part 13B. Reference numeral 13C denotes a lens part for refracting the emitted light from the LED 11C, and reference numerals 13C1 and 13C2 denote leg parts for fixing the lens part 13C.

  As described above, in the vehicular lamp of the first embodiment, the lens portions 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, and 3M are integrally formed by one member. Although formed, in the vehicular lamp of the seventh embodiment, each of the lens portions 13A, 13B, and 13C is formed as a separate member. In the vehicular lamp of the seventh embodiment, the lens portions 13B and 13C are formed in the same shape as the lens portion 13A.

  10 to 12, reference numeral 14 denotes a fixing member 16A for fixing the LED 11A, a fixing member 16B for fixing the LED 11B, a fixing member 16C for fixing the LED 11C, and the lens portions 13A, 13B, 13C. A substrate for support is shown.

  In the vehicular lamp of the seventh embodiment, as shown in FIGS. 10 and 12, the lens portion 13A is disposed between the LED 11A and the parabolic columnar reflecting surface 12A, and the lens unit 13B is disposed between the LED 11B and the parabolic columnar reflection. The lens part 13C is disposed between the LED 11C and the parabolic columnar reflecting surface 12A.

  In the vehicular lamp of the seventh embodiment, the emitted light from the LEDs 11A, 11B, and 11C hardly changes in the degree of diffusion in the front-rear direction (the left-right direction in FIG. 12) of the emitted light from the LEDs 11A, 11B, and 11C. As described above, the light is refracted by the lens portions 13A, 13B, and 13C. As a result, when the radiated light from the LEDs 11A, 11B, and 11C is reflected by the parabolic columnar reflecting surface 12A and the reflecting surfaces 12B and 12C, it becomes horizontal light and irradiates the front side of the vehicle lamp (the right side in FIG. 12). Is done.

  Further, in the vehicular lamp of the seventh embodiment, the emitted light from the LEDs 11A, 11B, and 11C has a reduced degree of diffusion in the left-right direction (left-right direction in FIG. 11) of the emitted light from the LEDs 11A, 11B, and 11C. Further, the light is refracted by the lens portions 13A, 13B, and 13C.

  In other words, in the vehicular lamp according to the seventh embodiment, the LEDs 11A, 11B, and 11B are arranged so that the degree of diffusion in the left-right direction of the vehicular lamp decreases and the degree of diffusion in the front-rear direction of the vehicular lamp hardly changes. Lens portions 13A, 13B, and 13C for refracting radiation emitted from 11C are disposed between the LEDs 11A, 11B, and 11C and the parabolic columnar reflecting surface 12A.

  That is, in the vehicular lamp of the seventh embodiment, the emitted light from the LEDs 11A, 11B, and 11C is caused by the lens portions 13A, 13B, and 13C disposed between the LEDs 11A, 11B, and 11C and the parabolic columnar reflecting surface 12A. Is refracted, whereby the degree of lateral diffusion of the refracted light that has passed through the lens parts 13A, 13B, and 13C is made smaller than the degree of lateral diffusion of the emitted light from the LEDs 11A, 11B, and 11C. The degree of diffusion in the front-rear direction of the refracted light that has passed through 13A, 13B, and 13C is made substantially equal to the degree of diffusion in the front-rear direction of the emitted light from the LEDs 11A, 11B, and 11C.

  Therefore, according to the vehicular lamp of the seventh embodiment, the emitted light from the LEDs 11A, 11B, and 11C passes through the lens portions 13A, 13B, and 13C for reducing the degree of diffusion in the left-right direction of the vehicular lamp. As compared with the case where the parabolic reflecting surface 12A is reflected as it is to the front side of the vehicle lamp, the light distribution pattern is narrowed to collect the irradiation light, thereby brightly illuminating the front side of the vehicle lamp. be able to.

  More specifically, according to the vehicular lamp of the seventh embodiment, a parabolic column shape is formed as compared with the case where the lens portions 13A, 13B, and 13C for reducing the degree of diffusion in the left-right direction of the vehicular lamp are not provided. The front side of the vehicular lamp can be illuminated brightly while reducing the horizontal dimension of the reflecting surface 12A. That is, according to the vehicular lamp of the seventh embodiment, the front side of the vehicular lamp can be illuminated sufficiently brightly by horizontal light while reducing the horizontal dimension of the parabolic columnar reflecting surface 12A.

It is the perspective view which looked at the vehicle lamp of 1st Embodiment from the front side, the left side, and the upper side. It is a front view of the vehicular lamp of a 1st embodiment. It is a left view of the vehicle lamp of 1st Embodiment. It is sectional drawing which looked at the vehicle lamp of 1st Embodiment from the left side of FIG. It is an enlarged view of the vehicle lamp of 1st Embodiment shown in FIG. It is AA sectional drawing of the vehicle lamp of 1st Embodiment shown in FIG. It is an enlarged view of the vehicle lamp of 1st Embodiment shown in FIG. It is a component diagram of LED1A of the vehicle lamp of 1st Embodiment. It is the figure which showed the light distribution pattern of the vehicle lamp of 1st Embodiment. It is the perspective view which looked at the vehicle lamp of 7th Embodiment from the front side, the left side, and the upper side. It is a front view of the vehicular lamp of a 7th embodiment. It is sectional drawing which looked at the vehicle lamp of 7th Embodiment from the left side of FIG.

Explanation of symbols

1A, 1B, 1C, 1D, 1E, 1F, 1G LED
1H, 1I, 1J, 1K, 1L, 1M LED
2A Parabolic columnar reflecting surface 2 Reflector 3 Lens unit 3A, 3B, 3C, 3D, 3E, 3F, 3G Lens part 3H, 3I, 3J, 3K, 3L, 3M Lens part 4 Substrate 5 Bottom plate

Claims (7)

  In a vehicular lamp provided with a reflector having a parabolic columnar reflecting surface for arranging a plurality of light emitting elements on a straight line extending in the left-right direction and reflecting light emitted from the plurality of light emitting elements to the front side, A lens for refracting radiated light from each light emitting element is arranged between each light emitting element and the parabolic columnar reflecting surface so that the degree of diffusion in the left-right direction is reduced and the degree of diffusion in the front-rear direction is hardly changed. A vehicular lamp characterized by being arranged in the above.   The cross-sectional shape of the light-emitting element side surface of the lens viewed from the front side or the rear side is convex, and the cross-sectional shape of the reflector side surface of the lens viewed from the front side or the rear side is convex, left or right side The lens is formed so that the cross-sectional shape of the surface on the light emitting element side of the lens viewed from the side is concave, and the cross-sectional shape of the surface on the reflector side of the lens viewed from the left or right side is convex. The vehicular lamp according to claim 1, wherein the vehicular lamp is provided.   The cross-sectional shape of the light-emitting element side surface of the lens viewed from the front side or the rear side is a hyperbola, and the cross-sectional shape of the reflector side surface of the lens viewed from the front side or the rear side is a hyperbola, viewed from the left side or the right side. The lens is formed such that the cross-sectional shape of the surface on the light emitting element side of the lens is an arc or an elliptical arc, and the cross-sectional shape of the surface on the reflector side of the lens viewed from the left or right side is an arc or an elliptical arc. The vehicular lamp according to claim 2.   The curvature of the surface on the light emitting element side of the lens seen from the front side or the rear side is made smaller than the curvature of the surface on the reflector side of the lens seen from the front side or the rear side. Vehicle lamp.   The vehicular lamp according to any one of claims 1 to 4, wherein the light emitting element is disposed on the lens side with respect to a focal point of the lens.   6. The vehicular lamp according to claim 5, wherein the light emitting element is disposed on a lens side of about 0.2 mm from a focal point of the lens.   The vehicular lamp according to any one of claims 1 to 6, wherein the plurality of lenses are formed of one member.

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