JP2008010300A - Reflector device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reflector device that is high in reflection efficiency and luminance, and superior in impact resistance. <P>SOLUTION: The reflector device 10 is provided with one transparent or translucent resin made rod-like body 11, having a reflecting part 14 forming a triangle wave shape in the longitudinal section face, a rigid base 12 which is installed so as to cover the reflecting part opposed to the reflecting part 14 and in which a reflection part opposed face 19 is a mirror face, and one or two or more LED lamps 13, arranged facing one end face or both end faces 22, 23 of the rod like body 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a reflector device in which an LED lamp is arranged on an end face of a rod-like body or a plate-like body made of a transparent or translucent material and emits light from these surfaces.

2. Description of the Related Art Conventionally, there has been known a reflector made of a transparent rod-shaped body having a predetermined length with an optical path secured in the axial direction so that a light beam of an LED lamp is incident from the end thereof (for example, Patent Document 1). reference.). In this reflector, a plurality of jagged edges each having a side surface having a substantially saw-tooth shape are formed on a part of the outer peripheral surface of the rod-shaped body in a direction crossing the incident light beam in the axial direction. The reflector can be uniformly illuminated over a long range or a wide range with a small number of light sources.
JP 2004-109391 A (Claim 1, FIG. 1, FIG. 5)

  However, the above-mentioned rod-shaped reflector reflects light rays incident only by a plurality of jagged edges, so that the reflection efficiency is low and the luminance is inferior, and because it consists only of rod-shaped bodies, the impact resistance is not sufficient. was there.

A first object of the present invention is to provide a reflector device that has high reflection efficiency and brightness and is excellent in impact resistance.
The second object of the present invention is to display characters, symbols, etc. by generating a light emitting portion and a non-light emitting portion on the surface along the axial direction of the rod-shaped body or the longitudinal direction of the plate-shaped body. It is to provide a reflector device.

The third object of the present invention is to provide a reflector device that can make not only the upper surface of the rod-shaped body or the upper surface of the plate-shaped body, but also the side surface of the rod-shaped body or the side surface of the plate-shaped body as a bright surface. It is in.
A fourth object of the present invention is to provide a reflector device having a wide irradiation range by using a plate-like body.
The fifth object of the present invention is to provide a reflector device that can adjust the size of the plate-like body according to the use of the reflector device by constructing the plate-like body by joining two or more rod-like bodies. There is to do.

  In the invention according to claim 1, as shown in FIG. 1, the reflector device 10 includes a single transparent or translucent resin rod 11 having a reflective portion 14 having a triangular wave shape in a longitudinal section, and a reflective portion. 14 is arranged so as to cover the reflecting portion so as to cover the reflecting portion 14, and the reflecting portion facing surface 19 is a mirror surface and the one or both end surfaces 22, 23 of the rod-like body 11 are arranged to face each other. Two or more LED lamps 13 are provided.

  The invention according to claim 2 is the invention according to claim 1, and as shown in FIG. 4, the LED lamp 13 is disposed on one end face 22 of the rod-like body 11, and the end face 23 opposite to the one end face 22. Is a reflector device that is a plane inclined at an angle of 30 to 60 degrees with respect to the extended line 48 of the base bottom in the longitudinal section of the base.

  The invention according to claim 3 is the invention according to claim 1, wherein the reflecting portion 14 is formed continuously (FIGS. 1 and 2) or intermittently (FIGS. 5 and 6) in the axial direction of the rod-shaped body 11. Reflector device.

  The invention according to claim 4 is the invention according to claim 1, wherein the cross-section of the rod-like body 11 is circular, the cross-sectional shape of the collected mushroom (FIG. 1), or the cross-sectional shape of the kamaboko. It is.

  The invention according to claim 5 is the invention according to claim 1, wherein, as shown in FIG. 7, the reflecting portion facing surface 19 of the base 12 is formed in a flat shape, and the reflecting portion 14 is covered with the base 12. In addition, this is a reflector device in which a gap 46 is formed between the reflecting surface 19 of the base and the reflecting portion 14.

  The invention according to claim 6 is the invention according to claim 1, and as shown in FIG. 2, a triangular wave shape is formed in the longitudinal section of the base so that the reflecting portion facing surface 19 of the base 12 meshes with the reflecting portion 14. The reflector device is configured such that when the reflecting portion 14 is covered with the base 12, the reflecting portion facing surface 19 of the base is in close contact with the reflecting portion 14.

  In the invention according to claim 7, as shown in FIG. 8, the reflector device 50 is a single transparent or translucent resin plate-like body having a reflective portion 54 having a triangular wave shape in a longitudinal section on one surface. 51, a hard base 52 provided to face the reflecting portion 54 so as to cover the plate-like body 51, and the reflecting portion facing surface 62 is a mirror surface, and one or both end faces 66, 67 of the plate-like body 51. 1 or two or more LED lamps 53 arranged opposite to each other.

  The invention according to claim 8 is the invention according to claim 7, wherein one plate-like body 51 has two or more transparent members each having a reflecting portion 14 having a triangular wave shape in a longitudinal section as shown in FIG. Or it is the reflector apparatus formed by arranging the translucent resin rod-shaped body 11 in parallel and joining so that each reflection part 14 may become on one plane.

  The invention according to claim 9 is the invention according to claim 7, and as shown in FIG. 10, the LED lamp 53 is disposed on one end face 66 of the plate-like body 51, and an end face 67 opposite to the one end face 66. Is a reflector device which is a plane inclined by 30 to 60 degrees with respect to an extension line 68 of the base bottom in the longitudinal section of the base.

  The invention according to claim 10 is the invention according to claim 7, wherein the reflector 54 is formed in one direction of the plate-like body 51 continuously (FIG. 8) or intermittently (FIG. 11). Device.

  The invention according to an eleventh aspect is the invention according to the seventh aspect, wherein the reflecting portion facing surface 57 facing the reflecting portion which is the other surface of the plate-like body 51 is an LED lamp 53 as shown in FIG. The reflector device has a shape in which arcs are connected in a cross section perpendicular to the optical axis direction.

  The invention according to claim 12 is the invention according to claim 7, wherein the reflecting portion facing surface 62 of the base 52 shown in FIG. 8 is formed in a planar shape (not shown), and the reflecting portion 54 is covered by the base 52. In this case, the air gap (not shown) is formed between the reflecting portion facing surface 62 of the base and the reflecting portion 54.

  The invention according to claim 13 is the invention according to claim 7, and as shown in FIG. 8, the base 52 is formed in a triangular wave shape in the longitudinal cross section so that the reflecting portion facing surface 62 of the base 52 meshes with the reflecting portion 54. The reflector device is configured such that when the reflecting portion 54 is covered with the base 52, the reflecting portion facing surface 62 of the base is in close contact with the reflecting portion 54.

  In the reflector device described in claim 1, as shown in FIGS. 1 and 2, the light beam incident on the rod-shaped body from the LED lamp 13 is reflected in a polygonal manner due to the prism effect of the triangular wave-shaped reflecting portion 14. Light is emitted from the rod-shaped body 11 in a wide range. Further, the base 12 whose reflecting portion facing surface 19 is a mirror surface causes the light beam incident on the rod-shaped body from the LED lamp 13 to be reflected by the reflecting portion facing surface of the base 12 when it reaches the reflecting portion 14, so that the reflection efficiency is high, Accordingly, the luminance increases. In addition, since the reflecting portion 14 is protected by the hard base 12, even if a shock is applied to the triangular wave-like reflecting portion when the reflector device is used, the reflecting portion is not chipped, and the impact resistance is improved and the reflection is improved. A reduction in reflection efficiency due to dirt on the portion 14 is prevented.

  In the reflector device according to the second aspect, as shown in FIG. 4, the light beam incident from the one end surface 22 reaches the opposite end surface 23 along the axial direction of the rod-shaped body 11. The light beam reflected by the end face 23 passes through the upper surface 15 facing the reflecting portion 14. As a result, the amount of light emitted from the end face 23 to the outside decreases, so that the luminance on the upper surface 15 that is the bright surface facing the reflecting portion 14 can be increased.

  In the reflector device according to claim 3, as shown in FIGS. 1 and 2, when the reflection portion 14 is continuously formed, the upper surface 15 facing the reflection portion 14 extends in the axial direction of the rod-like body 11. A ray of light continuously goes out along. Since the amount of light decreases as the distance from the LED lamp 13 increases, it is suitable for the reflector device using the rod-shaped body 11 having a small length in order to maintain a desired luminance. As shown in FIG. 5 and FIG. 6, when the reflection portion 14 is intermittently formed, light rays are intermittently transmitted from the upper surface 15 facing the reflection portion 14 along the axial direction of the rod-shaped body 11. Go outside. Since light does not easily come out to the outside at the flat portion 49, the degree of decrease in the amount of light is low compared to the case where the reflecting portion 14 is continuous, and is more rod-like than the reflector device using the rod-like body 11 in which the reflecting portion 14 is continuously formed. Even if the length of the body 11 is increased, a desired luminance can be maintained.

  In the reflector device according to claim 4, as shown in FIGS. 2 and 3, the light beam generated by the LED lamp 13 enters the rod-like body 11 from one end face 22 or both end faces 22 and 23, and is reflected. It reaches the upper surface 15 from the portion 14. Since the upper surface 15 is not flat but curved, the totally reflected light beam diffuses inside the rod-like body 11 except for light rays that exit from the upper surface 15 due to transmission refraction, and not only on the reflector 14 but also on the side surface 16. But the light beam goes. Thereby, the side surface 16 of the rod-shaped body 11 can also be made into a bright surface.

  In the reflector device according to the fifth aspect, as shown in FIG. 7, the light beam is transmitted and refracted through the small slope forming the reflecting portion 14 and enters the gap 46. After reaching the reflecting surface 19 of the base, the light beam is totally reflected at a predetermined reflection angle and returns to the inside of the rod-shaped body 11 from another small slope. For this reason, reflection occurs on the reflection portion facing surface 19 of the base, and it becomes difficult to see the separation line 14a where the small slopes forming the reflection portion 14 contact each other. As a result, the luminance on the upper surface 15 that is the bright surface can be made uniform over the entire length of the rod-shaped body 11.

  In the reflector device according to the sixth aspect, as shown in FIG. 2, the light beam that has entered the rod-shaped body 11 from the end face 22 reaches the small slope that forms the reflecting portion 14. Since the reflecting part facing surface 19 of the base is in close contact under the small slope, all the rays that have arrived are totally reflected and travel toward the upper surface 15 that faces the reflecting part 14. For this reason, transmission refraction does not occur between the small inclined surfaces facing each other, and each small inclined surface constituting the reflecting portion 14 can be seen, and the luminance on the upper surface 15 that is a bright surface can be increased.

  In the reflector device according to claim 7, as shown in FIG. 8, by making the incident object of the LED lamp 53 into the plate-like body 51, a wider irradiation range than that of the rod-like body 11 can be obtained. It is done. Similarly to the reflector device according to claim 1, the base 52 whose reflecting portion facing surface 62 is a mirror surface is used when the light beam incident on the plate-like body from the LED lamp 53 reaches the reflecting portion 54. Since the light is reflected by the reflecting portion facing surface 52, the reflection efficiency is high, and the luminance is increased accordingly. In addition, since the reflecting portion 54 is protected by the hard base 52, even if an impact is applied to the triangular wave-like reflecting portion when the reflector device is used, the reflecting portion is not chipped and the impact resistance is improved.

  In the reflector device described in claim 8, as shown in FIG. 8, the size of the plate-like body is increased or decreased according to the use of the reflector device by increasing or decreasing the number of rod-like bodies 11 constituting the plate-like body 51. You can adjust the height. In addition, since the base 52 that covers the reflecting portion 54 is provided, it is easy to maintain the form of the plate-like body 51 that is an aggregate of two or more rod-like bodies 11. As a result, it is possible to obtain a reflector device that can be easily adjusted in size and excellent in shape retention.

  In the reflector device described in claim 9, as shown in FIG. 10, as in the reflector device described in claim 2, the luminance on the upper surface 55, which is the bright surface facing the reflector 54, is increased. be able to.

  In the reflector device according to the tenth aspect, similarly to the reflector device according to the third aspect, when the reflection portion 54 is continuously formed (FIG. 8), the plate-like body 51 having a small length. When the reflection part 54 is intermittently formed (FIG. 11), the plate-like body 51 is used rather than the reflector apparatus using the plate-like body 51 in which the reflection part 54 is continuously formed. Even if the length is increased, the desired luminance can be maintained. Furthermore, in the plate-like body 51 that is an aggregate of the rod-like bodies 11 or the plate-like body 51 that is integrally formed, the reflection portion 54 and the flat portion 61 are formed by arbitrarily forming the reflection portion 54. Due to the distribution, characters and designs can be displayed on the bright surface. As a result, a display function can be provided in addition to the illumination function.

  In the reflector device according to claim 11, as shown in FIGS. 8 and 9, the light beam generated by the LED lamp 53 enters the plate-like body 51 from one end face or both end faces 66 and 67, and is reflected. It reaches the upper surface 55 from the portion 54. Since the upper surface 55 is not flat but curved, the light beam totally reflected is diffused inside the plate-like body 51 except for light rays coming out of the upper surface 55 due to transmission refraction, and not only the reflection portion 54 but also the side surface 56. Alternatively, the light beam also travels to the side surface 60 of the plate-like body. Thereby, the side surface 56 or the side surface 60 of the plate-like body 51 can also be a bright surface.

  In the reflector device described in claim 12, as in the reflector device described in claim 5, it is difficult to see a dividing line (not shown) where the small inclined surfaces forming the reflecting portions contact each other, and thus the plate shape The luminance on the continuous surface composed of the upper surface and the side surface, which is the bright surface facing the reflecting portion, can be made uniform over the entire length of the body.

  In the reflector device described in claim 13, as shown in FIG. 8, as in the reflector device described in claim 6, it is possible to see each small slope constituting the reflection portion 54. The brightness on the upper surface 55, which is a bright surface, can be increased.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
As shown in FIG. 1, the reflector device 10 according to the first embodiment includes one rod-like body 11, one base 12, and two LED lamps 13.

  The rod-shaped body 11 is made of a transparent or translucent resin. Examples of the resin include acrylic resins and polycarbonate resins. Both end faces 22 and 23 of the rod-shaped body 11 form a vertical plane with respect to the axis. As shown in FIG. 2, the rod-like body 11 has a triangular wave-like reflecting portion 14 in the longitudinal section. As shown in FIG.1 and FIG.2, the reflection part 14 is continuously formed along one plane in the rod-shaped body bottom part. FIG. 2 shows only one LED lamp. In the longitudinal section of the reflecting portion 14 in the axial direction of the rod-shaped body 11, the adjacent small inclined surfaces 17 and 18 are continuous while forming an internal angle of about 90 degrees like the adjacent oblique sides of the isosceles triangle. The small slopes 17 and 18 form a prism.

  As shown in FIG. 3, the cross section of the rod-shaped body 11 has a cross-sectional shape when the collected mushroom is divided vertically. That is, in the cross section of the rod-shaped body 11, the planar reflecting portion 14 at the bottom of the rod-shaped body, the arc-shaped upper surface 15 at the top of the rod-shaped body, and the side of the rod-shaped body sandwiched between the upper surface 15 and the reflecting portion 14. It has two arcuate side surfaces 16 that face each other.

  The base 12 is made of hard resin or metal. Examples of the resin include ABS (acrylonitorile butadiene styrene) resin, and examples of the metal include aluminum with an anodized film and stainless steel. In this embodiment, the base 12 has a bowl-shaped cross section, and is provided so as to face the reflecting portion 14 and the two side surfaces 16 and cover the reflecting portion and the lower half of the side surface. Instead of forming the cross section of the base into a bowl shape that wraps around the reflecting portion and the lower half of the side surface, a simple plate shape may be used. The reflecting portion facing surface 19 and the side facing surface 19a are mirror surfaces. When the base body is made of resin, the mirror surface is formed by coating with a plating film such as chrome plating or tin / nickel plating or by coating the base body with a highly reflective coating. When the base body is a metal having reflectivity such as stainless steel, surface treatment is not particularly required. The reflection part facing surface 19 of the base 12 is formed in a triangular wave shape in the longitudinal section so as to mesh with the reflection part. That is, on the reflecting portion facing surface 19, small inclined surfaces 20 and 21 having the same pitch and the same size as the reflecting portion are formed, which are meshed with the small inclined surfaces 17 and 18 of the reflecting portion 14.

  As shown in FIGS. 1 and 2, a pair of LED lamps 13 is arranged on the end faces 22 and 23 of the rod-shaped body 11 combined with the base 12 with the lamp optical axis aligned with the central axis of the rod-shaped body. The LED lamp 13 is preferably a condensing LED. The cross section of the socket 13a of the LED lamp 13 has the same cross-sectional shape of the collected mushroom as the end face of the rod-like body 11, and is slightly larger than the peripheral edges of the end faces 22, 23 of the rod-like body 11. The pair of sockets 13 a are fitted to both end portions of the rod-shaped body 11.

  The operation of the reflector device 10 configured as described above will be described. In this embodiment, in FIG. 1, FIG. 2 and FIG. 3, the light beam is drawn by a single thin line. However, in reality, an infinite number of light beams from the LED 13 are emitted, and total reflection and transmission refraction are performed. As a result, one light beam is dispersed innumerably.

  As shown in FIG. 2, in the reflector device 10, the light beam 25 from the LED lamp 13 enters the rod-like body 11 from the end face 22, and a part 26 of the incident light beam 25 is reflected at the respective incident angles at the reflecting portion. 14 reaches the upper surface 15 facing 14. Of the light rays 26 that have reached the upper surface 15, a light beam 27 whose incident angle is less than the critical angle exits from the upper surface 15 to the outside of the rod-like body 11 by transmission refraction. The light beam 28 having an incident angle satisfying the critical angle is totally reflected while diffusing at the same angle as the incident angle, and travels inside the rod-shaped body 11 toward the small inclined surface 17 constituting the reflecting portion 14 or the small inclined surface 20 of the base.

  Subsequently, the light beam 28 that has reached the small inclined surface 17 is totally reflected by the small inclined surfaces 17 and 20 at the same angle as the incident angle of the small inclined surface of the base. This is because the reflection portion 14 is covered with the base 12. The totally reflected light beam 29 reaches the upper surface 15, and is divided again into a light beam 30 that exits from the upper surface 15 to the outside of the rod-like body 11 by transmission refraction and a totally reflected light beam 31 according to the incident angle. The light beam 31 travels inside the rod-shaped body 11 toward the small inclined surface 18 or the small inclined surface 21 of the base, and is then totally reflected by the small inclined surfaces 18 and 21. That is, due to the prism effect of the triangular wave-like reflecting portion 14, light rays incident on the rod-shaped body from the LED lamp 13 are reflected in a polygonal manner, and light is emitted from the rod-shaped body 11 in a wide range.

  On the other hand, as shown in FIG. 3, since the upper surface 15 of the rod-like body 11 has an arc shape, the light beam 28 diffuses into the light beams 28a, 28b, 28c and the like. The diffused light rays 28b and 28c reach the arc-shaped side surface 16 of the rod-like body, and again come out of the rod-like body 11 from the side surface 16 by transmission refraction depending on the magnitude of the incident angle θ and total reflection. Then, the rod-like body 11 is divided into small slopes, light rays that move toward the upper surface 15 or the side surface 16, and the like.

  The above operation is repeated until the light beam 25 reaches the end surface 23 facing the end surface 22. The light beam 32 from the LED installed perpendicular to the end face 23 shown in FIG. 1 also enters the rod-like body 11 from the end face 23 and repeats the same action toward the end face 22.

  In the first embodiment, an example in which the cross section of the rod-like body is the cross-sectional shape of the collected mushroom has been shown. However, the cross-sectional shape may be circular or kamaboko. Moreover, although the both end surfaces 22 and 23 of the rod-shaped body 11 showed the example which is a perpendicular | vertical surface with respect to the axis line, as shown in FIG. 4, when arrange | positioning the LED lamp 13 in the end surface 22 of the rod-shaped body 11 Alternatively, the end surface 23 opposite to the one end surface 22 may be a plane inclined at an angle θ with respect to the extension line 48 on the base bottom in the base longitudinal section. The angle θ is preferably 30 to 60 degrees, more preferably 40 to 50 degrees, and most preferably 45 degrees. In such a reflector device, the light beam incident from the one end surface 22 reaches the opposite end surface 23 along the axial direction of the rod-shaped body 11, and then the light beam reflected by the end surface 23 faces the reflecting portion 14. 15 is transmitted. As a result, the amount of light emitted from the end surface 23 to the outside is reduced, so that the luminance on the upper surface 15 that is the bright surface facing the reflecting portion 14 is increased even when the LED lamp 13 is provided only on one end surface of the rod-shaped body 11. can do.

  Moreover, in the said 1st Embodiment, although the triangular wave shape of the reflection part 14 was continuously formed in the axial direction of the rod-shaped body, the example shown intermittently as shown in FIG.5 and FIG.6. It may be formed. A portion 49 where the triangular wave-like reflecting portion is not formed is a non-light emitting portion. As shown in FIG. 6, in the reflector device in which the reflecting portion 14 is intermittently formed, light rays are intermittently emitted from the upper surface 15 facing the reflecting portion 14 along the axial direction of the rod-like body 11. Go outside. In the portion 49, the light beam is not easily emitted to the outside, so that the amount of decrease in the amount of light is lower than that in which the reflecting portion 14 is continuous, and the rod-like body is more than the reflector device using the rod-like body 11 in which the reflecting portion 14 is continuously formed. Even if the length of 11 is increased, the desired luminance can be maintained. If characters, designs, etc. are printed on the non-light emitting portion 49, these can be clearly indicated from the outside of the rod-shaped body by the light of the LED lamp 13.

  Further, in the first embodiment, the reflection part 14 and the base 12 are each formed in a triangular wave shape in the longitudinal section and are in close contact with each other. However, as shown in FIG. When the reflecting portion facing surface 19 of the base 12 is formed in a flat shape and the reflecting portion 14 is covered with the base 12, a gap 46 is formed between the reflecting portion facing surface 19 of the base and the reflecting portion 14. Also good. In such a reflector device, the light beam passes through and refracts the small slope forming the reflecting portion 14 and enters the gap 46. After reaching the reflecting surface 19 of the base, the light beam is totally reflected at a predetermined reflection angle and returns to the inside of the rod-shaped body 11 from another small slope. For this reason, reflection occurs on the reflection portion facing surface 19 of the base, and it becomes difficult to see the separation line 14a where the small slopes forming the reflection portion 14 contact each other. As a result, the luminance on the upper surface 15 that is the bright surface can be made uniform over the entire length of the rod-shaped body 11.

<Second Embodiment>
As shown in FIG. 8, the reflector device 50 according to the second embodiment includes one plate-like body 51, one base 52, and eight LED lamps 53.

  The plate-like body 51 is made of the same resin as the rod-like body of the first embodiment. Both end faces 66 of the plate-like body 51 form a vertical plane with respect to the longitudinal direction. The plate-like body 51 has a reflection portion 54 having a triangular wave shape in the longitudinal section on one surface, and the reflection portion 54 is continuously formed. The longitudinal section of the reflecting portion 54 in the longitudinal direction of the plate-like body 51 is the same as that shown in FIG. The single plate-like body 51 is prepared by preparing four transparent or semi-transparent resin rod-like bodies 11 shown in FIGS. 2 and 3 in the longitudinal section, and providing them with the respective reflecting portions 14 (FIGS. 2 and 3). ) Are aligned and joined in parallel so as to be on one plane. One plate-like body may be integrally molded with resin.

  As shown in FIG. 9, the reflecting portion facing surface 57 facing the reflecting portion, which is the other surface of the plate-like body 51, is an arc in a cross section (transverse cross section of the plate-like body 51) perpendicular to the optical axis direction of the LED lamp 53. Appearance of an almost British bread. That is, the plate-like body 51 is composed of a planar reflecting portion 54 and a reflecting portion facing surface 57 in the cross section, and each arc constituting the reflecting portion facing surface 57 is an arc-shaped upper surface of the top of the rod-shaped body. 55 and two arc-shaped side surfaces 56 that face each other and follow the upper surface.

  The base 52 is made of the same material as the base 12 shown in the first embodiment. As shown in FIG. 9, in this embodiment, the base 52 has a bottom 52 a and flanges 52 b at both ends in the cross section, and the upper surface of the bottom 52 a serves as a reflecting portion facing surface 62. The reflection portion facing surface 62 has a continuous triangular wave shape in the longitudinal section, and meshes with the triangular wave reflection portion 54 of the plate-like body 51. The base 52 is provided so as to cover the bottom surface and lower portions of both side surfaces of the plate-like body 51 whose appearance is substantially British bread shape. The base may have no flange.

  As shown in FIG. 8, LED lamps 53 are arranged on the end surfaces 66 and 67 of the plate-like body 51 combined with the base 52 so that the respective lamp optical axes are aligned with the central axis of the rod-like body 11. The LED lamp 53 is preferably a condensing LED. The cross section of the socket 53 a of the LED lamp 53 has the same shape as the end face of the plate-like body 51, and is slightly larger than the peripheral edges of the end faces 66 and 67 of the plate-like body 51. The pair of sockets 53 a are fitted to the end portions of the plate-like body 51.

  In the reflector device 50 configured as described above, the light beam generated by the LED lamp 53 enters the plate-like body 51 from one end face or both end faces 66 and 67 and reaches the upper surface 55 from the reflector 54. Since the upper surface 55 is not flat but curved, the light beam totally reflected is diffused inside the plate-like body 51 except for light rays coming out of the upper surface 55 due to transmission refraction, and not only the reflection portion 54 but also the side surface 56. Alternatively, the light beam also travels to the side surface 60 of the plate-like body. Thereby, the side surface 56 or the side surface 60 of the plate-like body 51 can also be a bright surface.

  In the second embodiment, the both end surfaces 66 and 67 of the plate-like body 51 are vertical surfaces with respect to the longitudinal direction. However, as shown in FIG. In the case where the plate body 51 is disposed on the one end face 22, the end face 67 opposite to the one end face 66 may be a plane inclined at an angle θ with respect to the extension line 68 on the base bottom in the base longitudinal section. The angle θ is preferably 30 to 60 degrees, more preferably 40 to 50 degrees, and most preferably 45 degrees. In such a reflector device, after the light beam incident from the one end surface 66 reaches the opposite end surface 67 along the axial direction of the plate-like body 51, the light beam reflected by this end surface 67 faces the reflecting portion 54. It penetrates the upper surface 55. As a result, the amount of light emitted from the end surface 67 to the outside is reduced. Therefore, even when the LED lamp 53 is provided only on one end surface of the plate-like body 51, the luminance on the upper surface 55, which is the bright surface facing the reflecting portion 54, is increased. Can be high.

  In the second embodiment, the example in which the triangular wave shape of the reflection portion 54 is continuously formed in the longitudinal direction of the plate-like body has been shown. However, as shown in FIG. It may be done. The portion 61 where the triangular wave-like reflecting portion is not formed becomes a non-light emitting portion.

  Further, in the second embodiment, an example in which four LED lamps are arranged on both end faces of the plate-like body has been shown. However, the number of LED lamps is the number of curved surfaces constituting the plate-like body. The number may be increased or decreased together, or may not be adjusted to the number of curved surfaces.

It is an assembly perspective view of the reflector device of the first embodiment of the present invention. FIG. 2 is a vertical sectional view taken along line AA in FIG. 1. It is the BB line cross-sectional view of FIG. It is a longitudinal cross-sectional view corresponding to FIG. 2 of the reflector apparatus which is a plane which the one end surface of the rod-shaped body inclined with respect to the extension line of the base bottom. It is an assembly perspective view of the reflector apparatus in which the reflection part of the rod-shaped body was formed intermittently. It is CC sectional view taken on the line of FIG. FIG. 7 is a vertical cross-sectional view corresponding to FIG. 6 in which a gap is formed between the reflecting portion and the base. It is an assembly perspective view of the reflector apparatus of 2nd Embodiment of this invention. It is the DD sectional view taken on the line of FIG. It is an assembly perspective view of the reflector device in which one end face of the plate-like body is a plane inclined with respect to the extension line of the base bottom. It is an assembly perspective view of the reflector apparatus in which the reflection part of the plate-shaped body was formed intermittently.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,50 Reflector apparatus 11 Bar-shaped body 12,52 Base 13,53 LED lamp 14,54 Reflection part 19,62 Reflection part opposing surface 22,23,66,67 End face 46 Cavity 48,68 Extension line 51 Plate-like body

Claims (13)

One transparent or translucent resin rod (11) having a reflecting portion (14) having a triangular wave shape in the longitudinal section;
A hard base (12) provided so as to cover the reflecting portion so as to face the reflecting portion (14) and having a reflecting portion facing surface (19) as a mirror surface,
A reflector device comprising one or more LED lamps (13) arranged to face one end surface or both end surfaces (22, 23) of the rod-shaped body (11).   The LED lamp (13) is disposed on one end face (22) of the rod-like body (11), and the end face (23) opposite to the one end face (22) is in the base longitudinal section with respect to the extension line (48) of the base bottom. The reflector device according to claim 1, wherein the reflector device is a plane inclined at an angle of 30 to 60 degrees.   The reflector device according to claim 1, wherein the reflection portion is formed continuously or intermittently in the axial direction of the rod-shaped body.   The reflector device according to claim 1, wherein the rod-like body (11) has a circular cross section, a cross-sectional shape of a collected mushroom or a cross-section shape of a kamaboko. The reflecting portion facing surface (19) of the base (12) is formed in a flat shape,
The space (46) is formed between the reflecting portion facing surface (19) of the base and the reflecting portion (14) when the reflecting portion (14) is covered with the base (12). The reflector device as described. The base (12) is formed in a triangular wave shape in the base longitudinal section so that the reflecting surface (19) of the reflecting portion meshes with the reflecting portion (14),
The reflector according to claim 1, wherein when the reflecting portion (14) is covered with the base (12), the reflecting portion facing surface (19) of the base is in close contact with the reflecting portion (14). apparatus. One transparent or translucent resin plate (51) having a reflective portion (54) having a triangular wave shape in the longitudinal section on one surface;
A hard base (52) provided to face the reflecting portion (54) so as to cover the plate-like body (51), and the reflecting portion facing surface (62) is a mirror surface;
A reflector device comprising: one or more LED lamps (53) arranged to face one end surface or both end surfaces (66, 67) of the plate-like body (51).   One plate-like body (51) has two or more transparent or semi-transparent resin rod-like bodies (11) each having a reflective portion (14) having a triangular wave shape in the longitudinal section. The reflector device according to claim 7, wherein the reflector device is formed by being aligned and joined in parallel so as to be on one plane.   An LED lamp (53) is disposed on one end surface (66) of the plate-like body (51), and an end surface (67) opposite to the one end surface (66) is an extension line (68) of the base bottom in the base longitudinal section. The reflector device according to claim 7, wherein the reflector device is a plane inclined by 30 to 60 degrees.   The reflector device according to claim 7, wherein the reflection portion is formed continuously or intermittently in one direction of the plate-like body.   The reflecting portion facing surface (57) facing the reflecting portion, which is the other surface of the plate-like body (51), has a shape in which arcs are connected in a cross section perpendicular to the optical axis direction of the LED lamp (53). Reflector device. The reflecting portion facing surface (62) of the base (52) is formed in a planar shape,
The reflection according to claim 7, wherein a gap is formed between the reflecting portion facing surface (62) of the base and the reflecting portion (54) when the reflecting portion (54) is covered with the base (52). Body equipment. The reflecting surface (62) of the base (52) is formed in a triangular wave shape in the base longitudinal section so as to mesh with the reflecting portion (54),
The reflector according to claim 7, wherein when the reflecting portion (54) is covered with the base (52), the reflecting portion facing surface (62) of the base is in close contact with the reflecting portion (54). apparatus.

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