JP2009295552A - Lighting system using ring-like illuminant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system, capable of further improving the luminance of a ring-like illuminant. <P>SOLUTION: The lighting system using a ring-like illuminant which glows by light incident through an end surface on one end part 11 side and guided to a ring-like part and light incident through an end surface on the other end part 13 side and guided to the ring-like part comprises a light source unit 20. The light source unit 20 comprises a first light source 21a which emits the light incident through the one end-side end surface and guided to the ring-like part; a second light source 21b which emits the light incident through the other end-side end surface and guided to the ring-like part; a first optical system 22a disposed between the first light source and the one end-side end surface of the ring-like illuminant; a second optical system 22b disposed between the second light source and the other end-side end surface of the ring-like illuminant; and a case 23 for housing the first light source, the second light source, the first optical sytsem and the second optical system. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an illuminating device using a ring-shaped illuminant, and more particularly to an illuminating device capable of further improving the luminance of the ring-shaped illuminant.

  Conventionally, an illumination device using a ring-shaped light emitter that emits light in a ring shape is known. (For example, refer to Patent Document 1).

  FIG. 7 is a perspective view for explaining the configuration of the illumination device using the ring-shaped light emitter described in Patent Document 1. FIG.

  As shown in FIG. 7, the ring-shaped light emitter 10 ′ used in the illumination device described in Patent Document 1 has one end 11 ′ and the other end 12 ′ in a state of being parallel and adjacent to the one end 11 ′. And a ring-shaped portion 13 ′ between the one end portion 11 ′ and the other end portion 12 ′. An end surface 11a ′ on one end 11 ′ side and an end surface 12a ′ on the other end 12 ′ side of the ring-shaped light emitter 10 ′ are opposed to the LED light sources 20 ′ and 20 ′, respectively.

In the ring-shaped light emitter 10 ′, light incident from the end surface 11 a ′ on the one end 11 ′ side and the end surface 12 a ′ on the other end 12 ′ side and introduced into the ring-shaped portion 13 ′ is the longitudinal length of the ring-shaped portion 13 ′. The light is guided along the direction, and part of the light is emitted from the surface 13a ′ of the ring-shaped portion 13 ′ to emit light in a ring shape.
JP 2003-297108 A

  However, in the illuminating device described in Patent Document 1, the ring-shaped light emitter is mainly exposed from the LED light sources 20 ′ and 20 ′ out of the irradiating light irradiated to the irradiation ranges of the LED light sources 20 ′ and 20 ′. Irradiation light irradiated in the direction is configured to enter. For this reason, there is a problem that it is difficult to further improve the luminance of the ring-shaped portion 13 '.

  This invention is made | formed in view of such a situation, and it aims at providing the illuminating device using the ring-shaped light-emitting body which can further improve the brightness | luminance of a ring-shaped light-emitting body.

  In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that one end portion, the other end portion connected to the one end portion via a connecting portion, and a ring shape between the one end portion and the other end portion. A ring that emits light that is incident from the end face on the one end side and is introduced into the ring-shaped part, and light that is incident from the end face on the other end side and is introduced into the ring-shaped part. In a lighting device using a light emitter, a first light source that irradiates light introduced from the end surface on the one end side and introduced into the ring-shaped portion; and an incident light from the end surface on the other end side A second light source for irradiating light introduced into the shape portion, a first optical system disposed between the first light source and an end surface on one end side of the ring-shaped light emitter, the second light source, and the A second optical system disposed between the ring-shaped light emitter and an end face on the other end side; the first light source; the second light; A light source unit including a first optical system and a case for accommodating the second optical system, wherein the first optical system is disposed in front of the first light source and is directed from the first light source toward the front. A first collimating lens section that converts the irradiated light into parallel light and emits it toward the end face on the one end side of the ring-shaped light emitter; and the first collimating lens section is disposed so as to cover the periphery of the first light source. A first condensing lens portion that condenses the irradiation light emitted from one light source to the side and emits the light toward an end surface on one end portion side of the ring-shaped light-emitting body; 2nd collimating lens part which is arrange | positioned in front of 2 light sources, converts the irradiation light irradiated to a front direction from said 2nd light source into parallel light, and radiate | emits it toward the end surface of the other end part side of said ring-shaped light-emitting body And arranged so as to cover the periphery of the second light source and from the second light source It condenses the illumination light irradiated to characterized in that it comprises a second condenser lens unit for emitting toward the end face of the other end of the ring-shaped light-emitting body.

  According to the first aspect of the present invention, the first optical system (the first collimating lens unit and the first condensing lens unit) is provided between the first light source and the end surface on the one end side of the ring-shaped light emitter. A second optical system (second collimating lens unit and second condensing lens unit) is disposed between the second light source and the end surface on the other end side of the ring-shaped light emitter.

  Therefore, according to the first aspect of the present invention, it is possible to make almost all of the irradiation light irradiated to the irradiation ranges (front and side) of the first light source and the second light source incident on the ring-shaped light emitter. It becomes. Thereby, it becomes possible to improve the brightness | luminance of a ring-shaped light-emitting body compared with the past.

  The invention according to claim 2 is the invention according to claim 1, wherein a substrate on which the first light source and the second light source are mounted, a cover with a lens including the first optical system and the second optical system, A positioning pin provided on the case, and the substrate has an opening into which the positioning pin is inserted for positioning the substrate with respect to the case. Is formed with an opening into which the positioning pin is inserted for positioning the first optical system and the second optical system with respect to the first light source and the second light source. An opening into which the positioning pin is inserted is formed for positioning the end face on one end side and the end face on the other end side of the ring-shaped light emitter with respect to the first optical system and the second optical system. Special To.

  According to the second aspect of the present invention, since the common positioning pin is used, each optical element (first light source, second light source, first optical system, second optical) for the ring-shaped light emitter (both end faces) is used. System) and positioning between optical elements can be performed simultaneously. In addition, it is possible to suppress variations in positioning between the optical elements (first light source, second light source, first optical system, second optical system) and the optical elements with respect to the ring-shaped light emitter (both end faces thereof). The irradiation light from the first light source and the second light source can be efficiently incident on the ring-shaped light emitter. Thereby, it becomes possible to improve the brightness | luminance of a ring-shaped light-emitting body compared with the past.

  The invention described in claim 3 is the invention described in claim 1 or 2, characterized in that the opening of the ring-shaped light emitter is formed in the connecting portion.

  According to the invention described in claim 3, by forming an opening into which the positioning pin is inserted in the connecting portion, the connecting portion is not only used for connecting the one end portion and the other end portion, but also for positioning. (It is not necessary to add a new part for forming the opening).

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein an end surface on one end side and an end surface on the other end side of the ring-shaped light emitter are flat surfaces, and the first The exit surface of the collimating lens unit and the exit surface of the first condenser lens unit are a common exit surface that is a plane that is parallel to the end surface on the one end portion side of the ring-shaped light emitter and is opposed at a predetermined interval. The exit surface of the second collimating lens portion and the exit surface of the second condenser lens portion are common planes facing the end surface on the other end side of the ring-shaped light emitter and facing each other at a predetermined interval. It is a light emission surface.

  According to the fourth aspect of the present invention, the common exit surface (the exit surface of the first collimating lens unit and the exit surface of the first condensing lens unit, and the exit surface of the second collimating lens unit and the second condensing lens). The exit surface of the lens unit), and the end surface on the one end side and the end surface on the other end side of the ring-shaped light emitter are both flat. The common exit surface (the exit surface of the first collimator lens unit and the exit surface of the first condenser lens unit, and the exit surface of the second collimator lens unit and the exit surface of the second condenser lens unit) are a ring. It becomes the state which faced the end surface by the side of the one end part of a cylindrical light-emitting body in parallel and predetermined spacing.

  For this reason, for example, due to dimensional errors of the positioning pins, the lens cover, etc., the common exit surface (the exit surface of the first collimating lens unit, the exit surface of the first condenser lens unit, and the second collimating lens unit) And the end surface on one end side of the ring-shaped light emitter (the same is true for the common light exit surface and the end surface on the other end side of the ring-shaped light emitter). Even if it is misaligned, compared with the case where at least one of the common emission surface or the end surface is a curved surface, the irradiation light from the first light source (the same applies to the second light source) is used as one end side of the ring-shaped light emitter. It is possible to efficiently enter the light from the end face (the same is true of the end face on the other end side). Thereby, it becomes possible to improve the brightness | luminance of a ring-shaped light-emitting body compared with the past.

  According to the invention described in claim 4, the common emission surface and the end surface on the one end side of the ring-shaped light emitter (the same applies to the end surface on the one end portion side) are both flat. For this reason, it is possible to prevent scattering of light emitted from the first light source and the second light source and emitted from the common exit surface.

  The invention according to claim 5 has one end portion, the other end portion connected to the one end portion via a connecting portion, and a ring-shaped portion between the one end portion and the other end portion. Incident into the ring-shaped light emitter that emits light by being incident from the end face on the part side and introduced into the ring-shaped part and incident on the end face on the other end part side and introduced into the ring-shaped part, In the light source unit that irradiates light introduced into the ring-shaped portion, the first light source that irradiates the light introduced from the end surface on the one end portion side and introduced into the ring-shaped portion; and the end surface on the other end portion side A second light source that irradiates light that is incident and introduced into the ring-shaped portion; a first optical system that is disposed between the first light source and an end face on one end side of the ring-shaped light emitter; A second optical system disposed between the second light source and the end surface on the other end side of the ring-shaped light emitter; A first light source, a second light source, a first optical system, and a case for housing the second optical system, wherein the first optical system is disposed in front of the first light source and is frontward from the first light source. A first collimating lens part that converts the irradiation light applied to the parallel light into a parallel light and emits it toward the end face on one end side of the ring-shaped light emitter, and is arranged so as to cover the periphery of the first light source, A first condensing lens unit that condenses the irradiation light irradiated sideways from the first light source and emits the light toward an end surface on one end side of the ring-shaped light emitter; and the second optical system includes: A second collimating lens that is disposed in front of the second light source, converts the irradiation light irradiated in the front direction from the second light source into parallel light, and emits the parallel light toward the end surface on the other end side of the ring-shaped light emitter. And a portion that covers the periphery of the second light source and laterally from the second light source Characterized in that it comprises a second condenser lens unit for condensing the illumination light Isa and emitted toward the end face of the other end of the ring-shaped light-emitting body.

  According to the fifth aspect of the present invention, the first optical system (the first collimating lens unit and the first condensing lens unit) is provided between the first light source and the end surface on the one end side of the ring-shaped light emitter. A second optical system (second collimating lens unit and second condensing lens unit) is disposed between the second light source and the end surface on the other end side of the ring-shaped light emitter.

  Therefore, according to the fifth aspect of the present invention, it is possible to make almost all of the irradiation light irradiated to the irradiation ranges (front and side) of the first light source and the second light source incident on the ring-shaped light emitter. It becomes. Thereby, it becomes possible to improve the brightness | luminance of a ring-shaped light-emitting body compared with the past.

  The invention according to claim 6 has one end portion, the other end portion connected to the one end portion via a connecting portion, and a ring-shaped portion between the one end portion and the other end portion. In the ring-shaped light emitter that emits light that is incident from the end face on the part side and is introduced into the ring-shaped part and light that is incident from the end face on the other end part side and is introduced into the ring-shaped part. Is provided in the optical unit for positioning the end face on one end side and the end face on the other end side of the ring-shaped light emitter with respect to the light source unit that emits light introduced into the ring-shaped part. An opening into which the positioning pin is inserted is formed.

  According to the invention described in claim 6, by forming the opening into which the positioning pin is inserted in the connecting portion, the connecting portion is not only used for connecting one end portion and the other end portion, but also for positioning. (It is not necessary to add a new part for forming the opening).

  ADVANTAGE OF THE INVENTION According to this invention, the illumination device using the ring-shaped light-emitting body which can further improve the brightness | luminance of a ring-shaped light-emitting body can be provided.

  Hereinafter, an illumination device using a ring-shaped light emitter according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram for explaining a configuration of an illumination device using the ring-shaped light emitter of the present embodiment. FIG. 2 is a front view of a vehicle headlamp to which a lighting device using the ring-shaped light emitter of the present embodiment is applied.

  The illumination device 100 using the ring-shaped light emitter of the present embodiment (hereinafter simply referred to as the illumination device 100) is applied to, for example, a vehicle illumination device or a household lamp mounted on a vehicle such as an automobile. As shown in FIG. 1, a ring-shaped light emitter 10 mainly for decoration purposes, a light source unit 20 that emits light for causing the ring-shaped light emitter 10 to emit light, and the like are provided. .

  As shown in FIG. 1, the ring-shaped light emitter 10 includes one end portion 11, the other end portion 13 connected to the one end portion 11 in a crossed manner via connecting portions 12 a and 12 b, the one end portion 11 and the other end portion 13. The ring-shaped part 14 between the two is formed integrally with, for example, acrylic or polycarbonate. The one end 11 and the other end 13 can be connected only by the connecting portion 12a in a state of being adjacent in parallel without crossing (in this case, the one end 11 and the other end are connected as in the conventional example). The portion 13 and the ring-shaped portion 14 are made continuous through the bent portion).

  The ring-shaped light emitter 10 is incident from the end surface 11a (plane) on the one end 11 side and introduced into the ring-shaped portion 14 and the light incident from the end surface 13a (plane) on the other end 13 side and introduced into the ring-shaped portion 14. The emitted light is guided along the longitudinal direction of the ring-shaped portion 14, and part of the light is emitted from the surface of the ring-shaped portion 14 to emit light in a ring shape.

  For example, as shown in FIG. 2, the ring-shaped light emitter 10 is assembled using a known fixing means such as a screw or a hook along the outer periphery of the headlamp (for example, an extension portion corresponding to the outer periphery of the headlamp). It has been. The ring-shaped light emitter 10 is similarly applied to a vehicular lamp such as a rear lamp other than the headlamp (in the case of a rear lamp, a red LED light source may be used as the first light source 21a and the second light source 21b). It can be assembled.

  As shown in FIG. 1, the one end part 11 and the other end part 13 of the ring-shaped light-emitting body 10 are connected via connecting parts 12a and 12b. The connecting portions 12a and 12b can maintain the shape of the ring-shaped light emitter 10 when the ring-shaped light emitter 10 is assembled. In this way, by maintaining the shape of the ring-shaped light emitter 10, the assembly work of the ring-shaped light emitter 10 can be performed as compared with the case where the one end 11 and the other end 13 of the ring-shaped light emitter 10 are not connected. It is possible to perform smoothly. Moreover, the moldability of the ring-shaped light emitter 10 is also improved.

  As shown in FIGS. 3 and 4, the light source unit 20 is separate from the ring-shaped light emitter 10. For this reason, the freedom degree and workability | operativity of the assembly | attachment of the ring-shaped light-emitting body 10 and the light source unit 20 improve. That is, as compared with the case where the light source unit 20 and the ring-shaped light emitter 10 are integrated, when one of them (the ring-shaped light emitter 10 or the light source unit 20) is assembled, the other does not get in the way. Can be performed smoothly. Further, it is possible to assemble the ring-shaped light emitter 10 to the extension and the like and assemble the light source unit 20 to the housing and the like not in the same place but in different places. In addition, the light source unit 20 does not hang from the ring-shaped light emitter 10 when the ring-shaped light emitter 10 is assembled, and it is possible to prevent damage at the connection point between the two. In addition, when any one (ring-shaped light emitter 10 or light source unit 20) has a problem (for example, damage to the ring-shaped portion 14 or the life of the first light source 21a), the ring-shaped light emitter 10 and the light source. It is possible to return to the original normal state by exchanging not only both of the units 20 but only the one in which a defect has occurred.

  As shown in FIGS. 3, 4, and 5, the light source unit 20 is a substrate on which a first light source 21 a and a second light source 21 b (in FIG. 3 and FIG. 4, bullet-type LED light sources 21 a and 22 b are illustrated). 21, a cover 22 with a lens integrally provided with a first optical system 22a and a second optical system 22b, a case 23 with a positioning pin 23a integrally provided at substantially the center of the bottom surface, and the like. As the first light source 21a and the second light source 21b, other LED light sources such as chip LEDs or other light sources such as incandescent light bulbs may be used.

  As shown in FIG. 4, the substrate 21 has an opening 21 c into which the positioning pin 23 a is inserted for positioning the substrate 21 with respect to the case 23. Similarly, the cover 22 with a lens is formed with an opening 22c into which a positioning pin 23a is inserted for positioning the first optical system 22a and the second optical system 22b with respect to the first light source 21a and the second light source 21b. ing. Similarly, as shown in FIG. 4, the connecting portion 12 a of the ring-shaped light emitter 10 includes a first optical system 22 a on the end surface 11 a on the one end 11 side and the end surface 13 a on the other end 13 side of the ring-shaped light emitter 10. In addition, an opening 12c into which the positioning pin 23a is inserted is formed for positioning with respect to the second optical system 22b.

  The substrate 21 and the cover 22 with a lens are positioned by inserting positioning pins 23 a into the opening 21 c of the substrate 21 and the opening 22 c of the cover 22 with a lens, and then fastened to the case 23 with a screw N. Thereby, as shown in FIG. 3, the light source unit 20 in a state in which the tip of the positioning pin 23a protrudes from the surface of the cover 22 with the lens by a predetermined amount is configured.

  The ring-shaped light emitter 10 and the light source unit 20 having the above configuration are assembled to a vehicle (extension, housing, etc.) as follows, for example.

  First, the ring-shaped light emitter 10 is assembled to a predetermined portion of the extension. Next, the extension to which the ring-shaped light emitter 10 is assembled is assembled to the housing. And finally, as shown in FIG. 4, the positioning pin 23a which protruded from the front-end | tip (the surface of the cover 22 with a lens 22) to the opening 12c (opening 12c formed in the connection part 12a) of the ring-shaped light-emitting body 10 is carried out. The light source unit 20 in a positioned state is assembled to a housing or the like using known fixing means such as screws.

  As described above, since the common positioning pin 23a is used, each optical element (the first light source 21a, the second light source 21b, the first optical system 22a, the second optical system 22b) and each optical for the ring-shaped light emitter 10 is used. Positioning between elements can be performed simultaneously. In addition, it is possible to suppress variations in positioning between the optical elements (the first light source 21a, the second light source 21b, the first optical system 22a, the second optical system 22b) and the optical elements with respect to the ring-shaped light emitter 10. The irradiation light from the first light source 21a and the second light source 21b can be efficiently incident on the ring-shaped light emitter 10.

  In the present embodiment, as shown in FIG. 4, the first light source 21 a and the first light source 21 a are arranged so that almost all of the irradiation light irradiated to the irradiation range of the first light source 21 a and the second light source 21 b is incident on the ring-shaped light emitter 10. A first optical system 22 a is provided between the end surface 11 a on the one end 11 side of the ring-shaped light emitter 10, and a first optical system 22 a is provided between the second light source 21 b and the end surface 13 a on the other end 13 side of the ring-shaped light emitter 10. Two optical systems 22b are respectively arranged.

  The first optical system 22a and the second optical system 22b are integrally formed with the cover 22 with a lens using, for example, acrylic, polycarbonate, or the like.

  As shown in FIGS. 4 and 5, the first optical system 22 a includes a first collimating lens portion 22 a 1 having a common exit surface 22 a 3 (plane) formed on the surface (plane) of the cover 22 with a lens, and a first condensing lens. A lens portion 22a2 is provided. Similarly, as shown in FIGS. 4 and 5, the second optical system 22b includes a second collimating lens portion 22b1 and a second collimating lens portion 22b1 in which a common emission surface 22b3 (plane) is formed on the surface (plane) of the cover 22 with lens. Two condensing lens portions 22b2 are provided. Since the first optical system 22a and the second optical system 22b have the same configuration, the first optical system 22a will be described below, and the description of the second optical system 22b will be omitted.

  As shown in FIGS. 4 and 5, the first collimating lens unit 22a1 is a lens unit for converting irradiation light irradiated in the front direction of the irradiation range of the first light source 21a into parallel light. A convex lens surface (incident surface) swelled on the light source 21a side and a common exit surface 22a3 on the opposite side are provided.

  As described above, the tip of the positioning pin 23a (tip of the positioning pin 23a protruding from the surface of the lens-equipped cover 22) is inserted into the opening 12c of the ring-shaped light emitter 10 (opening 12c formed in the connecting portion 12a) and positioned. Then, the first collimating lens portion 22a1 is disposed between the first light source 21a and the end surface 11a on the one end portion 11 side of the ring-shaped light emitter 10, as shown in FIG. In this arrangement, the common emission surface 22a3 (plane) is in a state of facing the end surface 11a (plane) on the one end 11 side of the ring-shaped light emitter 10 in parallel and at a predetermined interval. Further, the focal point of the lens unit 22a1 is located in the vicinity of the first light source 21a, and the optical axis of the lens unit 22a1 and the optical axis of the first light source 21a are in agreement.

  For this reason, as shown in FIG. 6, the irradiation light irradiated in the front direction from the first light source 21a enters the first collimating lens portion 22a1, is converted into parallel light, and is emitted from the common emission surface 22a3. The light is incident from the end surface 11 a on the one end 11 side of the ring-shaped light emitter 10 and is introduced into the ring-shaped portion 14 to cause the ring-shaped portion 14 to emit light.

  As shown in FIGS. 4 and 5, the first condenser lens portion 22 a 2 emits irradiation light irradiated to the side that has not been used for light emission of the conventional ring-shaped light emitter within the irradiation range of the first light source 21 a. One end portion 11 of the ring-shaped light emitter 10 is a lens unit for condensing, and the irradiation light from the first light source 21a incident from the cylindrical surface 22a4 (incident surface) covering the periphery of the first light source 21a and the cylindrical surface 22a4. A bowl-shaped reflecting surface 22a5 that condenses and reflects toward the side end surface 11a is provided.

  As described above, the tip of the positioning pin 23a (tip of the positioning pin 23a protruding from the surface of the lens-equipped cover 22) is inserted into the opening 12c of the ring-shaped light emitter 10 (opening 12c formed in the connecting portion 12a) and positioned. Then, as shown in FIG. 4, the 1st condensing lens part 22a2 will be in the state arrange | positioned so that the cylindrical surface 22a4 (incident surface) may cover the circumference | surroundings of the 1st light source 21a. In this arrangement, the reflecting surface 22a5 has an appropriate shape so that the reflected light can be efficiently incident from the end surface 11a without being totally reflected by the end surface 11a on the one end 11 side of the ring-shaped light emitter 10. Is formed.

  For this reason, as shown in FIG. 6, the irradiation light irradiated to the side from the first light source 21a is incident on the first condenser lens portion 22a2 from the incident surface 22a4, and the ring-shaped light emitter 10 is reflected by the reflecting surface 22a5. Condensed and reflected toward the end surface 11a on the one end 11 side, exits from the common exit surface 22a3, enters from the end surface 11a on the one end 11 side of the ring-shaped light emitter 10, and is introduced into the ring-shaped portion 14, The ring-shaped part 14 is caused to emit light.

  Regarding the relationship between the first optical system 22a (first collimating lens portion 22a1 and first condensing lens portion 22a2) and the end surface 11a on the one end portion 11 side of the ring-shaped light emitter 10 described above, the second optical system 22b. The same applies to the relationship between the (second collimating lens portion 22b1 and the second condenser lens portion 22b2) and the end surface 13a on the other end 13 side of the ring-shaped light emitter 10.

  As described above, according to the illuminating device 100 of the present embodiment, as shown in FIG. 4, the first optical element is disposed between the first light source 21 a and the end surface 11 a on the one end 11 side of the ring-shaped light emitter 10. The system 22a (the first collimating lens portion 22a1 and the first condenser lens portion 22a2) is disposed between the second light source 21b and the end surface 13a on the other end 13 side of the ring-shaped light emitter 10 in the second optical system 22b ( A second collimating lens part 22b1 and a second condenser lens part 22b2) are respectively arranged. For this reason, almost all of the irradiation light irradiated to the irradiation ranges (front and side) of the first light source 21 a and the second light source 21 b can be incident on the ring-shaped light emitter 10. Thereby, it becomes possible to improve the brightness | luminance of the ring-shaped light-emitting body 10 compared with the past.

  Moreover, according to the illuminating device 100 of this embodiment, since the common positioning pin 23a was used, each optical element (the 1st light source 21a, the 2nd light source 21b, the 1st optical system 22a, the 1st optical system with respect to the ring-shaped light-emitting body 10). The positioning between the two optical systems 22b) and each optical element can be performed simultaneously. In addition, it is possible to suppress variations in positioning between the optical elements (the first light source 21a, the second light source 21b, the first optical system 22a, the second optical system 22b) and the optical elements with respect to the ring-shaped light emitter 10. The irradiation light from the first light source 21a and the second light source 21b can be efficiently incident on the ring-shaped light emitter 10. Thereby, it becomes possible to improve the brightness | luminance of the ring-shaped light-emitting body 10 compared with the past.

  Moreover, according to the illuminating device 100 of this embodiment, the common exit surface 22a3 and the end surface 11a on the one end 11 side of the ring-shaped light emitter 10 are both flat. When the tip of the positioning pin 23a (the tip of the positioning pin 23a protruding from the surface of the cover 22 with the lens) is inserted into the opening 12c of the ring-shaped light emitter 10 (opening 12c formed in the connecting portion 12a) and positioned. As shown in FIG. 4, the common light exit surface 22 a 3 (plane) is in a state of facing the end surface 11 a (plane) on the one end 11 side of the ring-shaped light emitter 10 in parallel and at a predetermined interval.

  For this reason, for example, due to dimensional errors of the positioning pins 23, the lens cover 22, etc., the common emission surface 22a3 and the end surface 11a on the one end 11 side of the ring-shaped light emitter 10 (the common emission surface 22b3 and the ring-shaped light emission). Even if the positional relationship of the end surface 13a on the other end 13 side of the body 10 is slightly deviated, the first light source is compared with the case where at least one of the common exit surface 22a3 or the end surface 11a is a curved surface. Irradiation light from 21a (the same applies to the second light source 21b) can be efficiently incident from the end surface 11a on the one end portion 11 side (end surface 13a on the other end portion 13 side) of the ring-shaped light emitter 10. Thereby, it becomes possible to improve the brightness | luminance of the ring-shaped light-emitting body 10 compared with the past.

  Moreover, according to the illuminating device 100 of this embodiment, the common exit surface 22a3 and the end surface 11a on the one end 11 side of the ring-shaped light emitter 10 are both flat. For this reason, it is possible to prevent scattering of light emitted from the first light source 21a and the second light source 21b and emitted from the common emission surfaces 22a3 and 22b3.

  Moreover, according to the illuminating device 100 of this embodiment, the opening part 12c by which the positioning pin 23a is inserted in the connection part 12a is formed, and this connection part 12a connects the one end part 11 and the other end part 13. It can be used not only for applications but also for positioning.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

It is a figure for demonstrating the structure of the illuminating device using the ring-shaped light-emitting body of this embodiment. It is a front view of the headlamp of the vehicle to which the illuminating device using the ring-shaped light-emitting body of this embodiment was applied. It is a perspective view of a light source unit. It is a side view for demonstrating the relationship between a ring-shaped light-emitting body and a light source unit. It is a perspective view of a cover with a lens. It is a figure for demonstrating the optical path of the irradiation light irradiated from the 1st light source. It is a figure for demonstrating the structure of the illuminating device using the conventional ring-shaped light-emitting body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Illuminating device, 10 ... Ring-shaped light-emitting body, 11 ... One end part, 11a ... End surface, 12a, 12b ... Connection part, 12c ... Opening, 13 ... Other end part, 13a ... End surface, 14 ... Ring-shaped part, 20 ... Light source unit, 21 ... substrate, 21a ... first light source, 21b ... second light source, 21c ... aperture, 22 ... cover with lens, 22a ... first optical system, 22a1 ... first collimating lens unit, 22a2 ... first condensing Lens part, 22a3 ... exit surface, 22a4 ... cylindrical surface (incident surface), 22a5 ... reflective surface, 22b ... second optical system, 22b1 ... second collimating lens part, 22b2 ... second condensing lens part, 22b3 ... exit surface 22b4 ... cylindrical surface (incident surface), 22b5 ... reflecting surface, 22c ... opening, 23 ... case, 23a ... positioning pin, N ... screw

Claims (6)

One end portion, the other end portion connected to the one end portion via a connecting portion, and a ring-shaped portion between the one end portion and the other end portion, and incident from an end face on the one end portion side. In an illumination device using a ring-shaped light emitter that emits light by being introduced into a ring-shaped portion and light introduced from the end surface on the other end side and introduced into the ring-shaped portion,
A first light source that irradiates light that enters from the end face on the one end side and is introduced into the ring-shaped part, and a light that enters from the end face on the other end part side and is introduced into the ring-shaped part. A second optical source, a first optical system disposed between the first light source and an end surface on one end side of the ring-shaped light emitter, and the second light source and the other end side of the ring-shaped light emitter. A light source unit including a second optical system disposed between the first optical source and the end surface; and a case for housing the first light source, the second light source, the first optical system, and the second optical system,
The first optical system is disposed in front of the first light source, converts irradiation light emitted from the first light source in the front direction into parallel light, and directs it toward an end surface on one end side of the ring-shaped light emitter. The first collimating lens part that emits light and the first light source are arranged so as to cover the periphery of the first light source, and the irradiation light irradiated from the first light source to the side is collected to be one end side of the ring-shaped light emitter Including a first condenser lens portion that emits toward the end face of
The second optical system is disposed in front of the second light source, converts irradiation light emitted from the second light source in the front direction into parallel light, and forms an end surface on the other end side of the ring-shaped light emitter. A second collimating lens portion that emits toward the light source, and the other end of the ring-shaped light emitter that is arranged so as to cover the periphery of the second light source and collects irradiation light emitted from the second light source to the side. A lighting device using a ring-shaped light emitter, comprising a second condenser lens portion that emits light toward an end surface on the side of the portion. A substrate on which the first light source and the second light source are mounted;
A cover with a lens including the first optical system and the second optical system;
A positioning pin provided in the case, and
The substrate is formed with an opening into which the positioning pin is inserted for positioning the substrate with respect to the case.
The lens-attached cover is formed with an opening into which the positioning pin is inserted for positioning the first optical system and the second optical system with respect to the first light source and the second light source.
The positioning pin is inserted into the ring-shaped light emitter for positioning the end surface on one end side and the end surface on the other end side of the ring-shaped light emitter with respect to the first optical system and the second optical system. The illumination device using the ring-shaped light emitter according to claim 1, wherein an opening is formed.   3. The illumination device using a ring-shaped light emitter according to claim 1, wherein an opening of the ring-shaped light emitter is formed in the connecting portion. The end surface on one end side and the end surface on the other end side of the ring-shaped light emitter are flat surfaces,
The exit surface of the first collimating lens unit and the exit surface of the first condenser lens unit are common exits that are parallel to the end surface on the one end side of the ring-shaped light emitter and face each other at a predetermined interval. Surface,
The exit surface of the second collimating lens unit and the exit surface of the second condenser lens unit are common planes facing the end surface on the other end side of the ring-shaped light emitter and facing each other at a predetermined interval. The illumination device using the ring-shaped light emitter according to any one of claims 1 to 3, wherein the illumination device is an emission surface. One end portion, the other end portion connected to the one end portion via a connecting portion, and a ring-shaped portion between the one end portion and the other end portion, and incident from an end face on the one end portion side. Light that is introduced into the ring-shaped portion and incident on the ring-shaped light emitter that is emitted from the end face on the other end side and incident on the ring-shaped portion, and is introduced into the ring-shaped portion. In the light source unit to irradiate,
A first light source that irradiates light that enters from the end face on the one end side and is introduced into the ring-shaped part;
A second light source that irradiates light that enters from the end surface on the other end side and is introduced into the ring-shaped portion;
A first optical system disposed between the first light source and an end face on one end side of the ring-shaped light emitter;
A second optical system disposed between the second light source and an end face on the other end side of the ring-shaped light emitter;
A case for housing the first light source, the second light source, the first optical system, and the second optical system,
The first optical system is disposed in front of the first light source, converts irradiation light emitted from the first light source in the front direction into parallel light, and directs it toward an end surface on one end side of the ring-shaped light emitter. The first collimating lens part that emits light and the first light source are arranged so as to cover the periphery of the first light source, and the irradiation light irradiated from the first light source to the side is collected to be one end side of the ring-shaped light emitter Including a first condenser lens portion that emits toward the end face of
The second optical system is disposed in front of the second light source, converts irradiation light emitted from the second light source in the front direction into parallel light, and forms an end surface on the other end side of the ring-shaped light emitter. A second collimating lens portion that emits toward the light source, and the other end of the ring-shaped light emitter that is arranged so as to cover the periphery of the second light source and collects irradiation light emitted from the second light source to the side. A light source unit comprising a second condensing lens part that emits light toward an end surface on the part side. One end portion, the other end portion connected to the one end portion via a connecting portion, and a ring-shaped portion between the one end portion and the other end portion, and incident from an end face on the one end portion side. In the ring-shaped light emitter that emits light by the light introduced into the ring-shaped part and the light incident from the end face on the other end side and introduced into the ring-shaped part,
The connecting portion is connected to the optical unit for positioning the end face on one end side and the end face on the other end side of the ring-shaped light emitter with respect to a light source unit that emits light introduced into the ring-shaped portion. A ring-shaped light emitter, wherein an opening into which a provided positioning pin is inserted is formed.