JP5650340B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device in which a light guide plate is three-dimensionally arranged.

  Conventionally, with respect to a light bulb type lamp provided with a plurality of light emitting elements, the uniformity of light distribution is reduced by keeping the connection receiving portion approximately evenly away from each light emitting element and making it difficult to block light emission while ensuring assemblability. There is a suppressed lamp configuration (see, for example, Patent Document 1).

  In addition, regarding an illuminating device having a plurality of semiconductor light sources arranged on a support, the light guide is input-coupled to a light guide to which light from the light source is assigned at a predetermined angle with respect to the normal plane of the support, and the light guide is a reflective surface There is a configuration of a lighting device that includes a light exit surface, and an envelope surface of the light exit surface forms a curved segment (see, for example, Patent Document 2).

JP 2010-033959 A JP 2006-190684 A

  However, in the configuration as described above, the wide-angle light distribution characteristic required for the spot type or the bulb type cannot be obtained, and the diffused light before being sufficiently diffused is derived from the lighting device. Therefore, the directivity of light was too strong, and the design was not good.

  Therefore, in view of the above technical problems, the present invention can obtain a wide-angle light distribution characteristic required for a spot type or a light bulb type according to the environment of a facility or a user's preference, and at an arbitrary angle. It is an object of the present invention to provide an illumination device that can be variably adjusted and can diffuse light that has been sufficiently diffused from the illumination device, and that is excellent in design.

  In order to solve the above-described problem, an illumination device according to the present invention includes a power receiving unit to which electric power is supplied from the outside, a power source unit connected to the power receiving unit and converting the power into predetermined driving power, and the power source. A light source part that is connected to a light source and emits light by the driving power; a housing part that houses the light source part; and a part that protrudes from the housing part and that cuts out light from the light source part that is incident from the incident surface A light guide part comprising a light guide plate provided with a plurality of light guide pieces led out from the exit surface branched by the light guide part, and a holding part for holding the light guide part. By combining the three-dimensionally intersecting shapes, the shape viewed from the vertical direction is a cross shape, and the holding portion holds the cross-shaped light guide portion.

  According to the lighting device according to the present invention, it is possible to obtain a wide-angle light distribution characteristic required for a spot type or a light bulb type according to the environment of the facility or the user's preference, and to change it to an arbitrary angle. The diffused light that can be adjusted and sufficiently diffused can be derived from the lighting device, and is further excellent in design.

It is a perspective view which shows the illuminating device which concerns on the 1st Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the illuminating device which concerns on the 1st Embodiment of this invention for every structure. It is a perspective view which shows the housing | casing arrange | positioned at the illuminating device which concerns on the 1st Embodiment of this invention, (a) is formed with multiple the fin for heat radiation which consists of curved uneven | corrugated shape along the outer periphery. The perspective view which shows a housing | casing, (b) is a perspective view which shows the housing | casing in which the fin for heat radiation which consists of uneven | corrugated shape is formed in multiple numbers along the outer periphery, (c) is provided with the fin for heat radiation in the outer periphery It is a perspective view which shows the housing | casing which is not. A light guide plate that is disposed in a light guide portion of the lighting device according to the first embodiment of the present invention and is branched so that a tip of an emission surface forms a plurality of light guide pieces, and provided adjacent to the light guide plate. It is a schematic diagram which shows a light source, (a) is a schematic diagram which shows a light guide plate and a light source from the main surface of a light guide plate, (b) is a schematic diagram which shows the center light guide piece and light source of a light guide plate with sectional drawing. . The light guide plate by which the curved surface is formed toward the outer side with respect to the light guide piece branched into plurality in the light guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is shown. It is a schematic diagram, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The light guide plate by which the curved surface is formed toward the inner side with respect to the light guide piece branched into plurality in the light guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is shown. It is a schematic diagram, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. A light guide plate having an inclined surface formed inward with respect to a light guide piece branched into a plurality of light guide plates provided in a light guide portion of the lighting device according to the first embodiment of the present invention. FIG. 2A is a schematic diagram showing a main surface of a light guide plate, and FIG. 2B is a schematic diagram showing a tip of the light guide plate. It is a schematic diagram which shows the light guide plate by which the front-end | tip of the light guide piece branched into plurality in the light guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is formed in concave shape. (A) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. In the light guide plate provided in the light guide portion of the lighting device according to the first embodiment of the present invention, a concave portion having a columnar shape with a predetermined depth is formed at the tip of the light guide piece branched into a plurality of portions. It is a schematic diagram which shows the light guide plate which is, (a) is a schematic diagram which shows the main surface of a light guide plate, (b) is a schematic diagram which shows the front-end | tip of a light guide plate. In the light guide plate provided in the light guide portion of the lighting device according to the first embodiment of the present invention, a conical recess having a predetermined depth is formed at the tip of the light guide piece branched into a plurality of portions. It is a schematic diagram which shows the light guide plate which is, (a) is a schematic diagram which shows the main surface of a light guide plate, (b) is a schematic diagram which shows the front-end | tip of a light guide plate. The schematic which shows the light-guide plate in which the front-end | tip of the light guide piece branched into plurality in the light guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is each formed in the trapezoid trapezoid shape. It is a figure, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The schematic which shows the light-guide plate in which the front-end | tip of the light guide piece branched into plurality in the light guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is each formed in the truncated cone shape. It is a figure, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. It is a schematic diagram which shows the cross section of the light-guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention, and is corresponded to an application example, (a) of the light-guide plate which adjoins the edge part of a light-guide plate. The schematic diagram which shows the cross section of the several light-guide plate combined with the triangular prism shape which provided the space inside by connecting to an edge part, (b) is the cross section of the light guide plate integrally molded by the triangular prism shape which provided the space inside (C) is a schematic diagram showing a cross section of a plurality of curved light guide plates combined in a cylindrical shape by connecting the ends of curved light guide plates to the ends of adjacent curved light guide plates, d) is a schematic diagram showing a cross section of a light guide plate integrally formed in a cylindrical shape, (e) is a schematic diagram showing a cross section of a plurality of light guide plates in which light guide plates are combined in a cross shape, and (f) is integrated in a cross shape. It is a schematic diagram which shows the cross section of the shape | molded light-guide plate. It is a perspective view which shows the illuminating device which concerns on the 2nd Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the illuminating device which concerns on the 2nd Embodiment of this invention for every structure. A light guide plate that is disposed in a light guide portion of a lighting device according to a second embodiment of the present invention and is branched so that a tip of an emission surface forms a plurality of light guide pieces, and provided adjacent to the light guide plate. It is a schematic diagram which shows a light source, (a) is a schematic diagram which shows a light guide plate and a light source from the main surface of a light guide plate, (b) is the light guide plate formed in the same surface facing the main surface which a concave pattern opposes. It is a schematic diagram which shows a center light guide piece and a light source with sectional drawing. A light guide plate that is disposed in a light guide portion of a lighting device according to a second embodiment of the present invention and is branched so that a tip of an emission surface forms a plurality of light guide pieces, and provided adjacent to the light guide plate. It is a schematic diagram which shows a light source, (a) is a schematic diagram which shows a light-guide plate and a light source from the main surface of a light-guide plate, (b) is a light-guide plate formed in the non-face-to-face in the main surface which a concave pattern opposes It is a schematic diagram which shows a light guide piece and a light source in the center of the cross section. A light guide plate that is disposed in a light guide portion of a lighting device according to a second embodiment of the present invention and is branched so that a tip of an emission surface forms a plurality of light guide pieces, and provided adjacent to the light guide plate. It is a schematic diagram which shows a light source, (a) is a schematic diagram which shows a light guide plate and a light source from the main surface of a light guide plate, (b) is formed so that a concave pattern may become deep gradually from an incident surface toward a front-end | tip. It is a schematic diagram which shows the light guide piece and light source of the center of the light guide plate currently performed with sectional drawing. It is the schematic diagram shown in the state which permeate | transmitted the pattern formed in the one main surface of the light-guide plate arrange | positioned in the illuminating device of the 2nd Embodiment of this invention, and the pattern formed in the other main surface, (a ) Is a schematic diagram showing a state in which the pattern of the other main surface is formed identically with the pattern of the one main surface, and (b) is the pattern of the other main surface in the X direction with respect to the pattern of the one main surface. (C) is a schematic diagram showing a state in which the pattern on the other main surface is formed with a half pitch eccentricity in the Y direction with respect to the pattern on one main surface, d) is a schematic diagram showing a state in which the pattern of the other main surface is formed with a half-pitch eccentricity in the X direction and the Y direction with respect to the pattern of one main surface. It is a schematic diagram which shows the concave pattern which consists of a quadrangular pyramid formed in the light-guide plate arrange | positioned at the illuminating device of the 2nd Embodiment of this invention, (a) is a concave pattern from the main surface of a light-guide plate. The schematic diagram shown, (b) is a schematic diagram showing a concave pattern from the side of the light guide plate. It is a perspective view which shows the illuminating device which has arrange | positioned the light guide part which combined the light guide plate formed so that the height of the light guide piece branched into multiple may become the same which concerns on the 2nd Embodiment of this invention. . The perspective view which shows the illuminating device which arrange | positioned the light guide part which combined the light guide plate formed so that the light guide piece branched into four in the cross shape according to the 2nd Embodiment of this invention may become trapezoid shape, respectively. FIG. It is a perspective view which shows the illuminating device which arrange | positioned the light guide part which combined the light guide plate so that the three light guide pieces provided in the cross shape based on the 2nd Embodiment of this invention may each become circular arc shape. Illumination provided with a light guide unit in which a concave pattern or a light guide plate in which a convex pattern is formed is also provided on the tip and side surfaces of a plurality of branched light guide pieces according to the second embodiment of the present invention It is a perspective view which shows an apparatus. It is a perspective view which shows the illuminating device which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the housing | casing part and light guide part which are arrange | positioned at the illuminating device which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the housing | casing part and light guide part which removed the protection part arrange | positioned at the illuminating device which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the angle adjustment part and light guide part of the housing | casing part which are arrange | positioned at the illuminating device which concerns on the 4th Embodiment of this invention. It is principal part sectional drawing which shows the angle adjustment part and light guide part of the housing | casing part arrange | positioned at the illuminating device which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the light guide part which has the angle adjustment part and display part of the housing | casing part arrange | positioned in the illuminating device which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the ultrasonic processing apparatus which processes the light-guide plate arrange | positioned at each illuminating device of the 2nd thru | or 4th embodiment of this invention. It is a front view which shows the ultrasonic processing apparatus which processes the light-guide plate arrange | positioned at each illuminating device of the 2nd thru | or 4th embodiment of this invention. It is a side view which shows the ultrasonic processing to the light-guide plate base material by the ultrasonic processing apparatus which processes the light-guide plate arrange | positioned at each illuminating device of the 2nd thru | or 4th embodiment of this invention, (a). It is a side view which shows the state before performing an ultrasonic process to a light-guide plate base material, (b) is a side view which shows the state which has applied the ultrasonic process to the light-guide plate base material. It is the perspective view shown in the state which permeate | transmitted an example of the ultrasonic processing horn provided in the ultrasonic processing apparatus which processes the light-guide plate arrange | positioned at each illuminating device of the 2nd thru | or 4th embodiment of this invention. is there. It is a schematic diagram showing a main part of an example of an ultrasonic processing horn provided in an ultrasonic processing device for processing a light guide plate disposed in each lighting device of the second to fourth embodiments of the present invention, (A) is a schematic diagram showing a plurality of processed dots formed on the ultrasonic processing horn from the side, and (b) is a schematic diagram showing a plurality of processed dots formed on the ultrasonic processing horn from the front.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to a lighting device of the invention will be described with reference to the drawings. In addition, the illuminating device of this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably.

  Moreover, in the following description, the illuminating device 1 of the 1st Embodiment of this invention is demonstrated first, referring FIG. 1 thru | or FIG. Next, each illuminating device of the 2nd Embodiment of this invention is demonstrated, referring FIG. 14 thru | or FIG. Next, the illuminating device 7 of the 3rd Embodiment of this invention is demonstrated, referring FIG. Next, a lighting device according to a fourth embodiment of the present invention will be described with reference to FIGS. Next, a method for manufacturing a light guide plate provided in each of the illumination devices according to the first to fourth embodiments of the present invention will be described with reference to FIGS. 31 to 35 and the like. Finally, the configuration and main functions and effects of the above-described lighting device according to the present invention will be described for each claim.

[First Embodiment]
Hereinafter, the lighting device 1 according to the first embodiment of the present invention will be specifically described with reference to FIGS. 1 to 13.

  For example, as illustrated in FIG. 2, the lighting device 1 according to the first embodiment includes a power reception unit 10, a power supply unit 20, a light source unit 30, a housing unit 40, and a light guide unit 100. Hereinafter, each structure of the illuminating device 1 is demonstrated in order.

  The power receiving unit 10 constituting the lighting device 1 of the first embodiment is supplied with electric power from the outside. As shown in FIG. 2, such a power receiving unit 10 includes a base 11, an insulating case 12, and an insulating case cover 13. Hereinafter, the configuration of the power receiving unit 10 will be described. The base 11 of the power receiving unit 10 is, for example, screwed into a socket constructed in an indoor facility to receive power supply. The diameter of the base 11 is, for example, 26 mm, which is a general size. Further, instead of the base 11, for example, a plug that is inserted into an outlet and receives power supply, or a terminal that receives power supply by connecting a generator or a storage battery may be used. Further, the insulating case 12 of the power receiving unit 10 is made of, for example, plastics having insulating properties and is formed in a cylindrical shape. A power supply unit 21 (to be described later) is housed in the internal space 12D provided inside the insulating case 12 as described above. Further, the insulating case cover 13 of the power receiving unit 10 is made of, for example, plastic having insulation properties, and is formed from a cylindrical piece. Such an insulating case cover 13 has a joint portion 13A of the insulating case cover 13 formed at the other end 12B of the insulating case 12 in a state where the power supply unit 21 is housed in the internal space 12D of the insulating case 12. It is joined to 12C. The insulating case 12 is connected by fitting the base 11 to one end 12A and fitting the case 41 of the case portion 40 described later in a state where the insulating case cover 13 is joined to the other end 12B. ing.

  The power supply unit 20 constituting the lighting device 1 of the first embodiment is connected to the power receiving unit 10 and converts the power supplied from the outside through the power receiving unit 10 into predetermined driving power. Such a power supply unit 20 includes a power supply unit 21 as shown in FIG. Hereinafter, the configuration of the power supply unit 20 will be described. The power supply unit 21 of the power supply unit 20 steps down the power input from the outside through the base 11 of the power receiving unit 10 from 100 V to, for example, 24 V, to a constant DC current according to the rating of the light source 31 of the light source unit 30. Rectification, pulse modulation after rectification, noise removal, and the like, and driving power is supplied to the light source 31 of the light source unit 30 described later. Such a power supply unit 21 includes, for example, a transformer, a rectifier, and a capacitor. As for the configuration of the power supply unit 21, for example, when a fluorescent tube, a cold cathode tube, or a neon tube is used as the light source of the light source unit, AC power supplied from the outside is used without being converted to DC. The power supply unit 21 is housed in the internal space 12D of the insulating case 12 of the power receiving unit 10.

  The light source unit 30 constituting the lighting device 1 of the first embodiment is connected to the power supply unit 20 and emits light by the driving power supplied from the power supply unit 20. Such a light source unit 30 includes a light source 31 and a substrate 32 as shown in FIG. Hereinafter, the configuration of the light source unit 30 will be described. As the light source 31 of the light source unit 30, for example, a light emitting diode (LED: Light Emitting Diode) that emits white light is used. More specifically, an LED having a daylight color of about 3000 Kelvin or a cold white color of about 5500 Kelvin is used as the LED. Here, as shown in FIG. 2, for example, 10 surface-mounted LEDs are arrayed in a cross shape along the light guide plate 101 and the incident surface 101F and the incident surface 102F of the light guide plate 102 combined in a cross shape. ing. Such a light source 31 enters light into the light guide plate 101 and the light guide plate 102 from the light incident surface 101F and the light incident surface 102F of the light guide plate 101 and the light guide plate 102 toward the front end 101G and the front end 102G facing each other.

  Regarding the light source unit 30, the light source 31 is not limited to a white LED. For example, any one of white, red, orange, yellow, green, blue, indigo, and purple or a color of these colors You may comprise by LED which consists of a combination. The light source 31 may be configured by an LED that emits ultraviolet light. Similarly, the light source 31 is not limited to an LED, and may be composed of, for example, an organic light emitting diode, a fluorescent tube, a cold cathode tube, or a neon tube. Further, the substrate 32 of the light source unit 30 is a member for mounting the light source 31. Such a substrate 32 is made of, for example, aluminum that is light and has a certain strength, and is formed in a disk shape. Note that the material of the substrate 32 may be copper having excellent heat dissipation or a glass epoxy substrate having excellent workability.

  The housing part 40 constituting the illumination device 1 of the first embodiment houses the light source part 30. Such a housing | casing part 40 is comprised from the housing | casing 41, the outer periphery cover 42, the holding member 43, the fixing member 44, and the fixing member 45, as shown in FIG. Hereinafter, the structure of the housing | casing part 40 is demonstrated. The housing | casing 41 consists of aluminum, for example, and is formed in hemispherical shape. The fixing member 44 made of, for example, a flat head screw is passed through the hole 41B provided in the one surface 41A of the housing 41, and the screw hole 12E provided in the insulating case 12 and the screw hole 13B provided in the insulating case cover 13 are respectively passed. Screw in each. Further, the substrate 32 is engaged with the one surface 41 </ b> A of the housing 41. Further, the driving power of the power supply unit 21 is supplied to the light source 31 by a wire (not shown) through the wiring hole 13C of the insulating case cover 13, the wiring hole 41C of the housing 41, and the wiring hole 32B of the substrate 32. .

  Further, as shown in FIG. 2 or FIG. 3 (a), in order to efficiently dissipate the heat generated in the power supply unit 20 and the light source unit 30 by increasing the surface area of the casing 41 with respect to the casing unit 40, the outer peripheral surface A plurality of heat radiation fins having a concave and convex shape curved to 41E may be formed, or as shown in FIG. 3B, a plurality of heat radiation fins having a straight concave and convex shape may be formed on the outer peripheral surface 41E ′. May be. Of course, when the drive current value of the light source 31 is sufficiently low, or when the power loss in the power supply unit 21 is small, as shown in FIG. May be. Moreover, the outer periphery cover 42 consists of aluminum, for example, and is formed in the cylindrical shape. Such an outer peripheral cover 42 is passed through the casing 41 from the base 11 side, and a joint portion 42A of the outer peripheral cover 42 is joined to an end portion of a side wall 43C of a holding member 43 described later.

  Similarly, as shown in FIG. 2, for example, as illustrated in FIG. 2, the holding member 43 is engaged with the light guide plate 101 and the light guide plate 102 and is detachably held on the housing 41. Such a holding member 43 is made of aluminum, for example, and is formed in a semi-disc shape. Specifically, each of the pair of holding members 43 is engaged by inserting a groove 43A opened in the center of the holding member 43 into an engaging portion 102H provided in a light guide piece 102A of the light guide plate 102 described later. Match. Further, each of the pair of holding members 43 includes protrusions 43B formed at both ends of the holding member 43, and concave engagement portions provided respectively below the light guide piece 101A and the light guide piece 101D of the light guide plate 101 described later. It is inserted and engaged with the joint part 101H. Further, in a state where the light guide plate 102 is inserted into the light guide plate 101 and the pair of holding members 43 are engaged with each other, the fixing member 45 made of, for example, a pan head screw, the hole 43D of the pair of holding members 43, and the substrate 32. The screw holes 32A are opened in this order. Then, the light guide plate 101, the light guide plate 102, and the substrate 22 can be attached to and detached from the housing 41 by screwing the fixing member 45 into the screw holes 41D provided on the one surface 41A of the housing 41. Hold. Note that the fixing member 45 may be sealed with an adhesive containing a reflective agent. Note that the side walls 43 </ b> C of the pair of holding members 43 cover the engaging grooves 41 </ b> F provided on the outer peripheral surface 41 </ b> E of the housing 41. In addition, it is good also as a structure which hold | maintains the board | substrate 32 so that attachment or detachment independently is possible with respect to the one surface 41A of the housing | casing 41 using the separate fixing member which consists of screws, for example.

  The light guide part 100 which comprises the illuminating device 1 of 1st Embodiment is protruded and provided from the housing | casing part 40, and guides the light of the light source part 30 which injected from the incident surface from the branched output surface. With regard to such a light guide unit 100, first, the basic specifications of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. Next, basic optical characteristics of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. Furthermore, the shape of the light guide piece branched into a plurality of light guide plates provided in the light guide unit 100 will be described with reference to FIGS. Finally, an application example of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. In addition, the shape of the light guide part which comprises the illuminating device 1 of 1st Embodiment is not limited to the shape of the light guide part 100, For example, each illuminating device of the 2nd thru | or 4th embodiment mentioned later is mentioned. It is good also as the shape of the light guide part 110 thru | or the light guide part 170 which comprise.

  First, basic specifications of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. The light guide unit 100 is configured by combining, for example, a light guide plate 101 and a light guide plate 102 in a cross shape. The light guide plate 101 and the light guide plate 102 are each made of, for example, a transparent acrylic resin plate. The light guide plate 101 and the light guide plate 102 are not limited to transparent resin plates, and colored resin plates may be used. The light guide plate 101 and the light guide plate 102 may be, for example, a resin plate to which a fine particle diffusion member that emits diffused light when irradiated with visible light. Similarly, for the light guide plate 101 and the light guide plate 102, for example, a resin plate coated or added with a fluorescent agent that emits fluorescence when irradiated with light in the ultraviolet region or visible region may be used.

  Regarding the basic specifications of the light guide plate provided in the light guide unit 100, the light guide plate 101 and the light guide plate 102 are formed in a predetermined shape. Specifically, in the light guide plate 101, the front end of the light guide plate 101 is branched into four parts: a light guide piece 101A, a light guide piece 101B, a light guide piece 101C, and a light guide piece 101D. The light guide plate 101 is formed such that the lengths of the tips 101G of the light guide piece 101B and the light guide piece 101C are longer than the lengths of the tips 101G ′ of the light guide piece 101A and the light guide piece 101D. . Further, the light guide plate 101 has a depth between a notch 101L formed between the light guide piece 101A and the light guide piece 101B and a notch 101N formed between the light guide piece 101C and the light guide piece 101D. Are formed to be substantially equal. The light guide plate 101 is formed so that the depth of the notch 101M is deeper than the depth of the notch 101L and the notch 101N formed adjacent to the left and right.

  Similarly, regarding the basic specifications of the light guide plate provided in the light guide unit 100, the light guide plate 102 inserted and combined in the light guide plate 101 is similar to the light guide plate 101 in that the tip of the light guide plate 102 is guided by the light guide. It is branched into four pieces: a piece 102A, a light guide piece 102B, a light guide piece 102C, and a light guide piece 102D. Further, similarly to the light guide plate 101, the light guide plate 102 has the light guide pieces 102B and the light guide pieces 102C having the tip ends 102G longer than the lengths of the light guide pieces 102A and the light guide pieces 102D. It is formed to become. Further, like the light guide plate 101, the light guide plate 102 is formed between the notch 102L formed between the light guide piece 102A and the light guide piece 102B, and the light guide piece 102C and the light guide piece 102D. It is formed so that the depth with the notch 102N is substantially equal. Similarly to the light guide plate 101, the light guide plate 102 is formed such that the depth of the notch portion 102M is shallower than the depth of the notch portion 102L and the notch portion 102N formed adjacent to the left and right. .

  Similarly, regarding the basic specifications of the light guide plate provided in the light guide unit 100, the notch 101M of the light guide plate 101 and the joint 102J provided in the center of the incident surface 102F of the light guide plate 102 are joined. A light guide plate 102 is inserted into the light guide plate 101. The light guide plate 101 and the light guide plate 102 are formed such that when the notch 101M and the joint 102J are joined, the incident surface 101F of the light guide plate 101 and the incident surface 102F of the light guide plate 102 are located on the same plane. ing. Further, the light guide plate 101 and the light guide plate 102 are coated with a silicone coating agent or a glass coating agent (not shown) having functions such as waterproof, antifouling, and dustproof, respectively, or functions such as waterproof, antifouling, and dustproof. You may coat | cover the transparent resin which has not shown in figure.

  Next, basic optical characteristics of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. Here, in FIG. 4, the light guide plate 103 in which the configurations of the light guide plate 101 and the light guide plate 102 are simplified, and the light source 31 adjacent to the light guide plate 103 are schematically illustrated. A part of the light of the light source 31 incident from the incident surface 103F of the light guide plate 103 is, for example, three notches 103L to notches formed between the light guide pieces 103A to 103D branched into four parts. With 103N, each can be reflected at a wide angle. Here, a part of the light reflected at a wide angle by the notch 103L to the notch 103N is subjected to multiple reflection between the one main surface 103V and the other main surface 103Q provided in the light guide piece 103A to the light guide piece 103D, respectively. To do. Furthermore, when the depth of the notch 103M of the light guide plate 103 is formed to be deeper than the depth of the notch 103L and the notch 103N formed adjacent to the left and right, the light reflected at a wide angle by the notch 103M is reflected. It is easy to reach the light guide piece 103A and the light guide piece 103D.

  In addition, regarding the basic optical characteristics of the light guide plate provided in the light guide unit 100, in the case of a light guide plate formed in a simple rectangular shape like a conventional light guide plate, it enters from the incident surface of the light guide plate and goes straight. Most of the emitted light goes straight ahead and is emitted from the tip. However, in the case where the light guide plate 103 according to the present invention has a shape branched into four, for example, the light incident from the incident surface 103F of the light guide plate 103 passes through the notch 103L to the notch 103N. Multiple reflection is performed between one main surface 103V and the other main surface 103Q provided in the light guide pieces 103A to 103D, respectively. In addition, the light incident on the light guide plate 103 is reflected in all directions between the surfaces of the light guide plate 103 so that, for example, the front end 103G or the front end 103G ′ is irradiated obliquely and then the front end 103G or the front end 103G ′. Without being emitted from the light, it is reflected to the incident surface 103F side. Therefore, in the light guide plate 103 according to the present invention, the rate at which the light incident from the incident surface 103F of the light guide plate 103 travels straight and is emitted from the tip 103G or the tip 103G ′ can be greatly reduced.

  Furthermore, the shape of the light guide piece branched into a plurality of light guide plates provided in the light guide unit 100 will be described with reference to FIGS. 5 to 12. The light guide plate 104A shown in FIG. 5 has a curved surface formed toward the outside of the tip of the light guide piece 104A ′ branched into a plurality, and the light guide plate 104B shown in FIG. A curved surface is formed toward the inside. In addition, the light guide plate 104C shown in FIG. 7 is formed with an inclined surface toward the inside of the front end of the light guide piece 104C ′ branched into a plurality. In addition, about the light guide piece 104C 'of the light guide plate 104C shown in FIG. 7, you may form an inclined surface toward the outer side of the front-end | tip of this light guide piece 104C'. Further, in the light guide plate 104D shown in FIG. 8, the tip of the light guide piece 104D ′ branched into a plurality is formed in a concave shape. Specifically, the tip of the light guide piece 104D ′ of the light guide plate 104D is provided with an inclined surface, for example, so as to be concave from both sides toward the center. Each of the light guide pieces of the light guide plate 104A to the light guide plate 104D is processed into a special shape at the tip portion, so that it is excellent in design and suppresses a difference in light intensity distribution depending on a viewing angle. be able to. Further, each light guide piece of the light guide plates 104A to 104D is subjected to diffuse reflection at the tip portion, so that the light is likely to be multiple-reflected on each main surface. Therefore, the ratio of the light emitted to the outside from the front end portion of each light guide piece of the light guide plate 104A to the light guide plate 104D is reduced, and the light extraction efficiency from each main surface can be improved. In addition, the light emitted to the outside from the distal end portion of each light guide piece of the light guide plate 104A to the light guide plate 104D is led out obliquely outward, inward, and inward to the illumination device 1, respectively.

  Further, regarding the shape of the light guide piece branched into a plurality of light guide plates provided in the light guide unit 100, the light guide plate 104E shown in FIG. 9 has a predetermined depth at the tip of the light guide piece 104E ′ branched into a plurality of parts. The light guide plate 104F shown in FIG. 10 has a conical recess having a predetermined depth at the tip of the light guide piece 104F ′. The light guide plate 104E and the light guide plate 104F are excellent in design and visually recognized because the leading end portion of each light guide piece is processed into a special shape, like the light guide plates 104A to 104D. The difference in the light intensity distribution due to the angle can be suppressed. Further, when the light guide plate 104E and the light guide plate 104F are formed with a cylindrical or conical recess at the tip of a light guide piece branched into a plurality of light guide plates using, for example, a drilling machine, the surface accuracy of the recesses is determined. By roughening, it is possible to diffusely reflect light on the inner peripheral surface of the recess. Therefore, the light extraction efficiency in the light guide plate 104E and the light guide plate 104F can be improved.

  Similarly, regarding the shape of the light guide piece branched into a plurality of light guide plates provided in the light guide unit 100, the light guide plate 104G shown in FIG. In the light guide plate 104H shown in FIG. 12, the tips of the light guide pieces 104H ′ are each formed in a truncated cone shape. The light guide plate 104G and the light guide plate 104H are excellent in design and visually recognized because the leading end portion of each light guide piece is processed into a special shape, like the light guide plates 104A to 104F. The difference in the light intensity distribution due to the angle can be suppressed. Further, the light guide plate 104G and the light guide plate 104H are subjected to end milling using, for example, a milling machine, so that a convex portion having a trapezoidal trapezoidal shape or a truncated cone shape is formed at the tip of the light guide piece branched into a plurality of lightguide plates. Is formed. In this manner, by forming a convex portion having a trapezoidal trapezoidal shape or a truncated cone shape at the tip portion of each light guide piece of the light guide plate 104G and the light guide plate 104H, the orthogonal corner portions are removed, and the light guide plate Light is likely to be multiple-reflected inside. Therefore, the light extraction efficiency in the light guide plate 104G and the light guide plate 104H can be improved. In addition, since the tip portions of the light guide pieces of the light guide plate 104G and the light guide plate 104H are formed in a substantially lens shape having a trapezoidal trapezoidal shape or a truncated cone shape, the light emitted to the outside from the tip portion is substantially the same. It becomes parallel light.

  In addition, regarding the shape of the light guide piece branched into a plurality of light guide plates provided in the light guide unit 100, the light guide plates provided in the light guide unit 100 described above with reference to FIGS. You may form so that it may twist from a surface to a front-end | tip. In addition, the light guide piece branched into a plurality of light guide plates is not limited to a rectangular cross section, and for example, the cross section may be formed in a circular shape, an elliptical shape, or a polygonal prism shape. good. Similarly, the light guide pieces branched into a plurality of light guide plates may be formed in, for example, a conical shape whose cross-sectional area decreases from the incident surface of the light guide plate toward the tip. Further, by roughening the surface accuracy of a part or all of the side surface and the tip of the light guide plate, the light irradiated to the side surface and the tip from the inside of the light guide plate may be diffusely reflected at the side surface and the tip. . In addition, regarding the shape of the light guide piece branched into a plurality of light guide plates provided in the light guide unit 100 described above with reference to FIGS. 5 to 12, each illumination device of the second to fourth embodiments to be described later It can also be applied to.

  Finally, an application example of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. FIG. 13A shows three light guide plates 105 combined in a triangular prism shape having a space inside by connecting the end portions of the light guide plate 105 to the end portions of the adjacent light guide plate 105. Similarly, FIG. 13B shows a light guide plate 105 ′ integrally formed by, for example, molding so as to have a triangular prism shape having a space inside. The light guide plate is not limited to a triangular prism shape having a space inside as shown in FIGS. 13A and 13B. It is good also as a polygonal column consisting of etc. FIG. 13C shows three curved light guide plates 106 combined in a cylindrical shape by connecting the end portions of the curved light guide plates 106 to the end portions of the adjacent curved light guide plates 106. . Similarly, FIG. 13D shows a light guide plate 106 ′ integrally formed by, for example, molding so as to have a cylindrical shape. As shown in FIGS. 13C and 13D, the light guide plate is not limited to a cylindrical shape having a circular cross section, and may be, for example, a cylindrical shape having an elliptical cross section. .

  Further, regarding an application example of the light guide plate provided in the light guide unit 100, FIG. 13E shows four light guide plates 107 provided in a cross shape by combining the light guide plates 107. Similarly, FIG. 13 (f) shows a light guide plate 107 ′ integrally formed by, for example, molding so as to have a cross shape. 13 (e) and 13 (f), the light guide plate is not limited to a cross shape in which four light guide pieces protrude from the center, for example, three from the center. A plurality of light guide pieces such as one or five may be projected. Although not shown in each drawing of FIG. 13, the light guide plate is integrally formed by molding so that, for example, a space is not provided therein, and the cross section becomes a polygonal shape, a circular shape, an elliptical shape, or the like. Also good. Moreover, the application example of the light guide plate provided in the light guide unit 100 described above with reference to FIG. 13 can also be applied to each lighting device of the second to fourth embodiments described later.

  As mentioned above, according to the illuminating device 1 which concerns on 1st Embodiment, the external shape of the light-guide plate provided in a light guide part can be determined according to the environment of a facility, or a user preference. That is, in the illuminating device 1 according to the first embodiment, a light guide unit such as a spot type or a light bulb type having different light distribution characteristics and design properties can be provided. Specifically, in the illuminating device 1 according to the first embodiment, the surface area of the side surface that multi-reflects the light inside the light guide plate by branching the light exit surface at the tip of the light guide plate provided in the light guide portion into a plurality of portions. Is increasing. Therefore, if the illumination device 1 according to the first embodiment is used, the proportion of light that is directly derived from the emission surface at the tip of the light guide plate is reduced, and light is derived from the side surface of the light guide plate. Since the ratio of increases, the surroundings can be illuminated brightly. That is, the directivity of light derived from the lighting device 1 can be expanded. Furthermore, the light derived from the light guide plate can suppress the viewer from feeling dazzling when entering the eyes of the viewer.

  Moreover, in the illuminating device 1 which concerns on 1st Embodiment, the shape of the front-end | tip part of the light-guide plate provided in a light guide part is made into the curved surface curved toward the outer side or the inner side, for example, a trapezoid trapezoid shape, or a truncated cone shape Or, it is a shape provided with a concave portion formed of a columnar shape or a conical shape with a predetermined depth. Therefore, if the illumination device 1 according to the first embodiment is used, the emission direction of light derived from the tip of the light guide plate can be controlled to a predetermined angle, and the light is irregularly reflected at the tip of the light guide plate. Since a part of the light is reflected toward the incident surface, the light can be easily multi-reflected inside the light guide plate, and the light derived from the tip of the light guide plate can be substantially condensed light or substantially divergent. Can be light. That is, if the illumination device 1 according to the first embodiment is used, the light intensity distribution of the light derived from the light guide unit of the illumination device 1 can be arbitrarily set. For example, the illumination device 1 is orthogonal to the illumination device 1. It is possible to derive light having a substantially uniform light intensity distribution from the direction to the horizontal direction. In addition, if the light guide plate is provided so as to extend in the horizontal direction every time it is separated from the housing, for example, light can be led out to the rear in addition to the front of the lighting device 1.

  Similarly, in the illuminating device 1 according to the first embodiment, the outer shape of the light guide plate provided in the light guide unit is formed into a cross shape by combining two light guide plates in a three-dimensional manner, for example. Therefore, if the illumination device 1 according to the first embodiment is used, light derived from the main surface of the light guide plate can be emitted without being shielded by another light guide plate adjacent to the light guide plate. Can do. Further, the light guide plate provided in the light guide section is transparent, for example, the other main surface opposed to one main surface of the light guide plate can be visually recognized, and for example, other adjacent to one main surface of the light guide plate One main surface of the light guide plate can be visually recognized. That is, even when the light guide unit is viewed from any of the circumferential directions of the lighting device 1, it is possible to suppress a difference in brightness of light derived from the light guide plate. Further, since two light guide plates provided in a cross shape, for example, are overlapped with the light guide portion, for example, a part of the light that is multiply reflected within one light guide plate is adjacent to the one light guide plate. After being incident on another light guide plate that is overlapped, the light is further reflected multiple times inside the other light guide plate and then led out. That is, the light from the light source incident from the incident surface of the light guide plate is dispersed as diffused light. Therefore, when the viewer visually recognizes the light derived from the light guide plate, the viewer does not feel dazzling and can be recognized as a good surface light source with little difference in brightness.

  Similarly, in the illuminating device 1 which concerns on 1st Embodiment, it has the outstanding design property by forming the light guide plate provided in a light guide part in various shapes. Therefore, if the lighting device 1 according to the first embodiment is used, the lighting device 1 is not limited to a conventional lighting device that obtains a certain illuminance by simply illuminating a room or the like. A predetermined effect can be obtained for the viewer.

[Second Embodiment]
Hereinafter, each lighting device according to the second embodiment of the present invention will be specifically described with reference to FIGS. 14 to 24.

  In addition, each illuminating device of the 2nd Embodiment of this invention has a concave or convex pattern on the light guide plate 101 and the light guide plate 102 of the light guide unit 100 constituting the illuminating device 1 of the first embodiment, respectively. It is characterized by being formed. Other configurations according to the second embodiment are the same as the configurations described in the first embodiment. Specifically, the lighting device 2 of the second embodiment, for example, as shown in FIGS. 14 and 15, includes a power receiving unit 10, a power supply unit 20, and a specification similar to the lighting device 1 of the first embodiment. The light source part 30 and the housing | casing part 40 are comprised from the light guide part 110 peculiar to the illuminating device 2 of 2nd Embodiment. Therefore, in the second embodiment, the light guide unit having a configuration different from that of the first embodiment will be mainly described.

  The light guide plate of the light guide unit 110 constituting the illumination device 2 of the second embodiment has a concave or convex pattern that derives the light of the light source unit 30 incident from the incident surface as diffused light. Note that the concave or convex pattern is formed on at least one of a plurality of emission surfaces related to the light guide plate of the light guide unit 110. With respect to such a light guide unit 110, first, basic specifications of a light guide plate provided in the light guide unit 110 will be described with reference to FIG. Next, basic optical characteristics of the light guide plate provided in the light guide unit 110 will be described with reference to FIGS. 16 to 18. Further, the optical characteristics of the light guide plate when light is incident on the light guide plate provided in the light guide unit 110 from a plurality of incident surfaces will be described with reference to FIG. Details of the concave pattern formed on the light guide plate provided in the light guide unit 110 will be described with reference to FIG. Finally, application examples of the outer shape of the light guide unit 110 will be described with reference to FIGS.

  First, basic specifications of the light guide plate provided in the light guide unit 110 will be described with reference to FIG. 15 only for specifications different from those of the light guide unit 100 described above. On the light guide plate 111 of the light guide unit 110, a concave pattern for deriving diffused light, a convex pattern, or a pattern 111P composed of concave and convex patterns is formed in a matrix. Similarly, a concave pattern for deriving diffused light, a convex pattern, or a pattern 112P composed of concave and convex patterns is also formed in a matrix on the light guide plate 112 of the light guide unit 110. The interval between the pattern 111P and the pattern 112P is, for example, 1 mm to 6 mm.

  Next, basic optical characteristics of the light guide plate provided in the light guide unit 100 will be described with reference to FIGS. 16 to 18. In FIGS. 16A to 18A, illustration of a pattern on the main surface of the light guide plate is omitted. Here, in FIG. 16, the light guide plate 113 in which the configurations of the light guide plate 111 and the light guide plate 112 are simplified, and the light source 31 adjacent to the light guide plate 113 are schematically shown in a sectional view. A part of the light of the light source 31 incident from the incident surface 113F of the light guide plate 113 is, for example, three notches 113L to notches formed between the light guide pieces 113A to 113D branched into four parts. Each of 113N can be reflected at a wide angle. Here, a part of the light reflected at the wide angle by the notches 113L to 113N is multiple-reflected between the one main surface 113V and the other main surface 113Q provided on the light guide pieces 113A to 113D, respectively. Therefore, diffused light can be efficiently generated by the patterns 113W formed on the one main surface 113V and the patterns 113R formed on the other main surface 113Q. Furthermore, when the depth of the notch 113M of the light guide plate 113 is formed to be deeper than the depth of the notch 113L and the notch 113N formed adjacent to the left and right, the light reflected at a wide angle by the notch 113M is reflected. It is easy to reach the light guide piece 113A and the light guide piece 113D.

  Further, regarding the basic optical characteristics of the light guide plate provided in the light guide unit 100, a part of the light of the light source 31 incident from the incident surface 113F of the light guide plate 113 does not pass through the notch 113L to the notch 113N. The diffused light is generated by the pattern 113W and the pattern 113R respectively provided on the light guide pieces 113A to 113D. Here, in the case of a light guide plate that is formed in a simple rectangular shape like a conventional light guide plate, most of the light that goes straight from the incident surface of the light guide plate goes straight without being converted into diffused light. Released from the tip. However, in the case where the light guide plate 113 according to the present invention has a shape branched into four, for example, light incident from the incident surface 113F of the light guide plate 113 passes through the notch 113L to the notch 113N. Multiple reflection is performed between the one main surface 113V and the other main surface 113Q provided in the light guide pieces 113A to 113D, respectively. Further, the light incident on the light guide plate 113 is reflected in all directions between the surfaces of the light guide plate 113 so that, for example, the light is incident on the front end 113G at an oblique incidence, and then is not emitted from the front end 113G. Reflected to the 113F side. Therefore, in the light guide plate 113 according to the present invention, the ratio of the light incident from the incident surface 113F of the light guide plate 113 going straight without being converted into diffused light and emitted from the tip 113G can be greatly reduced. it can.

  Similarly, regarding the basic optical characteristics of the light guide plate provided in the light guide unit 100, if the density of the pattern 113W and the pattern 113R formed on the light guide plate 113 is sufficiently high, a plurality of patterns generated in the pattern 113W and the pattern 113R are generated. The diffused light is derived from one main surface 113V and the other main surface 113Q of the light guide plate 113 as a substantially uniform surface light source. Further, a part of the diffused light generated in the pattern 113W on the one main surface 113V and a large part of the diffused light generated on the pattern 113R on the other main surface 113Q are visually recognized by the viewer's eyes E. Therefore, the light guide plate 113 shown in FIG. 17B is formed more than the light guide plate 113 in which a plurality of patterns 113W formed on one main surface 113V and a plurality of patterns 113R formed on the other main surface 113Q shown in FIG. The light guide plate 114 in which a plurality of patterns 114W formed on one main surface 114V and a plurality of patterns 114R formed on the other main surface 114Q shown in FIG. Since the number of patterns in which the diffused light is generated increases, the difference in light brightness in the light guide plate 114 is reduced. Further, since the light intensity of the light source 31 is relatively lowered with respect to the tip from the incident surface of the light guide plate, the pattern depth is changed from the incident surface 115F of the light guide plate 115 to the tip as shown in FIG. It is possible to increase the intensity of diffused light generated by forming deeper in steps toward 115G, and to average the intensity of diffused light generated in a plurality of patterns. Similarly, the intensity of the diffused light may be averaged by forming the pattern pitch so as to be denser in steps from the incident surface 115F of the light guide plate 115 toward the tip 115G.

  Furthermore, the optical characteristics of the light guide plate when light is incident on the light guide plate provided in the light guide unit 110 from a plurality of incident surfaces will be described with reference to FIG. Here, for example, the light guide plate 116 shown in FIG. 19 is provided with the light source 31 on the incident surface 111F of the light guide plate 112 shown in FIG. 15, and further between the light guide pieces 112B and 112C of the light guide plate 112. This also corresponds to the state where the light source 31 is provided. As shown in FIG. 19, the pattern 116A provided on one main surface of the light guide plate 116C to the light guide plate 116F and the pattern 116B provided on the other main surface are each formed in a matrix at a pitch P1. Further, in the light guide plates 116C to 116F shown in FIGS. 19A to 19D, the incident light L1 is irradiated from the horizontal direction X of FIG. 19 to each pattern of the light guide plate 116. Yes. Similarly, the incident light L2 is irradiated from the vertical direction Y of FIG. 19 to each pattern of the light guide plate 116C to the light guide plate 116F. Hereinafter, the light guide plate 116D to the light guide plate shown in FIGS. 19B to 19D with reference to the state where the pattern 116A and the pattern 116B are formed so as to face each other like the light guide plate 116C shown in FIG. Optical characteristics under three conditions in which the pattern 116B is decentered in a predetermined direction with respect to the pattern 116A as in 116F will be described.

  Regarding the optical characteristics when light is incident on the light guide plate from a plurality of incident surfaces, the pattern 116B is formed by decentering the pattern 116A by a half pitch P2 in the X direction as in the light guide plate 116D shown in FIG. 19B. In this case, the pattern formed in the X direction of the light guide plate 116 visible from the one main surface side of the light guide plate 116D is twice that of the pattern of the light guide plate 116C shown in FIG. For this reason, the light guide plate 116D shown in FIG. 19B has a bright spot with a pattern visible from one main surface side of the light guide plate 116D as compared with the light guide plate 116C shown in FIG. 19A. Since the light is doubled in the X direction of 116D, the difference in brightness of the light in the X direction of the light guide plate 116D is reduced. Further, as in the light guide plate 116E shown in FIG. 19C, when the pattern 116B is formed with a half pitch P2 eccentricity in the Y direction with respect to the pattern 116A, the light guide plate 116E can be viewed from one main surface side. The pattern formed in the Y direction of the light plate 116E is twice as large as the pattern of the light guide plate 116C shown in FIG. For this reason, the light guide plate 116E shown in FIG. 19C has a bright spot with a pattern visible from one main surface side of the light guide plate 116E as compared with the light guide plate 116C shown in FIG. 19A. Since the light is doubled in the Y direction of 116E, the difference in brightness of the light in the Y direction of the light guide plate 116E is reduced.

  In addition, regarding the optical characteristics when light is incident on the light guide plate from a plurality of incident surfaces, the pattern 116B is respectively in the X direction and the Y direction with respect to the pattern 116A like the light guide plate 116F shown in FIG. When formed with a half-pitch P2 eccentricity, the patterns formed respectively in the X direction and the Y direction of the light guide plate 116F visible from one main surface side of the light guide plate 116F are those of the light guide plate 116C shown in FIG. Each is twice the pattern. For this reason, the light guide plate 116F shown in FIG. 19D has a bright spot with a pattern visible from one main surface side of the light guide plate 116F as compared with the light guide plate 116C shown in FIG. 19A. Since the light intensity is doubled in the X direction and the Y direction of 116F, the difference in brightness between the light guide plate 116F in the X direction and the Y direction is considerably reduced. As described above with reference to the light guide plates 116C to 116F shown in FIGS. 19A to 19D, the position of the pattern 116B with respect to the pattern 116A of the light guide plate 116 is decentered in the X and Y directions. Thus, the optical characteristics of the light guide plate 116 can be arbitrarily selected. In particular, in the light guide plate 116F shown in FIG. 19D, the difference in light brightness in both the X and Y directions is smaller than in the light guide plate 116C shown in FIG. Optical properties are obtained.

  Details of the concave pattern formed on the light guide plate provided in the light guide unit 110 will be described with reference to FIG. FIG. 20 shows a concave pattern 117 </ b> A made of a quadrangular pyramid formed on the light guide plate 117. Here, in the light guide plate 117, the concave pattern 117A made of a quadrangular pyramid has a rectangular surface at the lowermost part 117A ′, so that diffused light can be efficiently derived from the one main surface 117C and the other main surface 117D. Can do. Specifically, a part of the light incident from the incident surface 117F is irradiated, for example, on the lowermost portion 117A ′ of the pattern 117A formed on the one main surface 117C side, away from the incident surface 117F, and the other main Reflected to the surface 117D side. Similarly, a part of the light incident from the incident surface 117F is irradiated, for example, on the lowermost portion 117A ′ of the pattern 117A formed on the other main surface 117D side, and is in a direction away from the incident surface 117F and the one main surface 117C. Reflected to the side. Therefore, the light incident from the incident surface 117F can be converted into diffused light more efficiently and derived from the one main surface 117C and the other main surface 117D.

  Further, regarding the details of the concave pattern formed on the light guide plate, the concave pattern 117A made of a quadrangular pyramid has a rectangular surface at the lowermost part 117A ′, so that it diffuses from the one main surface 117C and the other main surface 117D. Light can be directly derived efficiently. Specifically, if the concave pattern 117A has a pure quadrangular pyramid shape, the diffused light generated in the vicinity of the lowermost portion 117A ′ of the quadrangular pyramid extends from one surface 117M at the tip portion to the opposite other surface 117N. Since the distance is extremely short, the diffused light is greatly attenuated by the multiple reflection in the vicinity of the lowermost portion 117A ′, and is difficult to be derived from the one main surface 117C or the other main surface 117D. On the other hand, when the concave pattern 117A has a rectangular surface at the lowermost part 117A ′ of the quadrangular pyramid, the diffused light generated in the vicinity of the lowermost part 117A ′ of the quadrangular pyramid has a surface 117M in the vicinity of the lowermost part 117A ′. Since there is a certain distance between the other surface 117N facing each other, it is directly derived from the one main surface 117C or the other main surface 117D before multiple reflection. Therefore, the light incident from the incident surface 117F can be derived from the main surface more efficiently.

  Finally, an application example of the outer shape of the light guide unit 110 will be described with reference to FIGS. 21 includes a combination of a light guide plate 121 and a light guide plate 122 formed so that the lengths of the light guide pieces branched into a plurality are the same. The branched light guide pieces are formed to have the same length. The specification concerning the light guide part 120 of the other illuminating device 3 is the same as the specification of the light guide part 110 mentioned above. 22 is provided with a combination of a light guide plate 131 and a light guide plate 132 formed so that the light guide pieces branched into four in a cross shape have a trapezoidal shape, respectively. ing. Here, in the light guide plate 131, the tip 131G of the light guide plate 131 is branched into two, a light guide piece 131A and a light guide piece 131B. Furthermore, the light guide plate 131 is formed in a trapezoidal shape by the tip 131G of the light guide piece 131A and the light guide piece 131B being inclined so as to become lower from the periphery of the illumination device 4 toward the center. In addition, the light guide plate 132 inserted into and combined with the light guide plate 131 has the same shape as the light guide plate 131.

  In addition, regarding the application example of the outer shape of the light guide unit 110, the light guide unit 140 of the lighting device 5 illustrated in FIG. 23 has a light guide plate formed so that four tips provided in a cross shape are each arcuate. 141 and the light guide plate 142 are provided in combination. Here, in the light guide plate 141, the tip 141G of the light guide plate 141 is branched into two, a light guide piece 141A and a light guide piece 141B. Furthermore, the light guide plate 141 is formed in an arc shape by the tips 141G of the light guide piece 141A and the light guide piece 141B being curved so as to increase from the periphery of the illumination device 5 toward the center. Yes. Further, the light guide plate 142 inserted and combined in the light guide plate 141 is formed in a semicircular shape by the tip 142G being curved from the periphery of the illumination device 5 toward the center. 24 has the same outer shape as the light guide 120 of the illumination device 3 shown in FIG. 21 described above. On the other hand, the light guide plate 151 and the light guide plate 152 of the light guide unit 150 are formed with a concave pattern, a convex pattern, or a concave and convex pattern also on the front end 151G and the front end 152G, and the side surface 151U and the side surface 152U. Has been. Note that the outer shapes of the light guides 120 to 140 described with reference to FIGS. 21 to 23 can also be applied to the illumination device 1 of the first embodiment described above.

  In addition, regarding the application example of the outer shape of the light guide unit 110, the light guide unit 110 to the light guide unit 140 are positioned 1 m apart from the tip of each light guide unit in the vertical direction and horizontally from the 1 m apart position. Table 1 shows an example of the measurement result of the illuminance [lx] at a total of four positions 30 cm, 50 cm, and 100 cm apart. The light source conditions are the same in each light guide.

  As mentioned above, according to each illuminating device which concerns on 2nd Embodiment, similarly to the illuminating device 1 which concerns on 1st Embodiment, determining the external shape of a light-guide plate according to the environment of a facility, or a user preference. Can do. That is, in each illuminating device according to the second embodiment, a light guide unit such as a spot type or a light bulb type having different light distribution characteristics and design properties can be provided. Specifically, in each illuminating device according to the second embodiment, similarly to the illuminating device 1 according to the first embodiment, the emission surface at the tip of the light guide plate provided in the light guide unit is branched into a plurality of portions. The surface area of the side surface that multi-reflects light inside the light guide plate is increased. Therefore, if each illumination device according to the second embodiment is used, the ratio of light that is directly derived from the light exit surface at the tip of the light guide plate is reduced, and light that is derived from the side surface of the light guide plate is reduced. Since the ratio of increases, the surroundings can be illuminated brightly. That is, the directivity of light derived from each lighting device can be expanded. Furthermore, the light derived from the light guide plate can suppress the viewer from feeling dazzling when entering the eyes of the viewer.

  Moreover, in each illuminating device which concerns on 2nd Embodiment, similarly to the illuminating device 1 which concerns on 1st Embodiment, the shape of the front-end | tip part of the light-guide plate provided in a light guide part curves, for example toward an outer side or an inner side. It has a curved surface, a trapezoidal trapezoidal shape, a frustoconical shape, or a shape provided with a recess having a cylindrical shape or a conical shape with a predetermined depth. Therefore, if each illumination device according to the second embodiment is used, the emission direction of light derived from the tip of the light guide plate can be controlled to a predetermined angle, and the light is irregularly reflected at the tip of the light guide plate. Since a part of the light is reflected toward the incident surface, the light can be easily multi-reflected inside the light guide plate, and the light derived from the tip of the light guide plate can be substantially condensed light or substantially divergent. Can be light. That is, if each lighting device according to the second embodiment is used, the light intensity distribution of the light derived from the light guide unit of each lighting device can be arbitrarily set. For example, orthogonal to each lighting device. It is possible to derive light having a substantially uniform light intensity distribution from the direction to the horizontal direction. In addition, if the light guide plate is provided so as to extend in the horizontal direction every time it is separated from the casing, for example, light can be led out to the rear in addition to the front of each lighting device.

  Similarly, in each lighting device according to the second embodiment, similarly to the lighting device 1 according to the first embodiment, the outer shape of the light guide plate provided in the light guide unit, for example, two light guide plates in a three-dimensional manner. By crossing and combining, it has a cross shape. Therefore, if each lighting device according to the second embodiment is used, the light derived from the main surface of the light guide plate is emitted without being shielded by another light guide plate adjacent to the light guide plate. Can do. Further, the light guide plate provided in the light guide section is transparent, for example, the other main surface opposed to one main surface of the light guide plate can be visually recognized, and for example, other adjacent to one main surface of the light guide plate One main surface of the light guide plate can be visually recognized. That is, even when the light guide is viewed from any direction in the circumferential direction of each lighting device, the difference in brightness of light derived from the light guide plate can be suppressed. Further, since two light guide plates provided in a cross shape, for example, are overlapped with the light guide portion, for example, a part of the light that is multiply reflected within one light guide plate is adjacent to the one light guide plate. After being incident on another light guide plate that is overlapped, the light is further reflected multiple times inside the other light guide plate and then led out. That is, the light from the light source incident from the incident surface of the light guide plate is dispersed as diffused light. Therefore, when the viewer visually recognizes the light derived from the light guide plate, the viewer does not feel dazzling and can be recognized as a good surface light source with little difference in brightness.

  Similarly, in each illuminating device according to the second embodiment, as in the illuminating device 1 according to the first embodiment, the light guide plate provided in the light guide unit is formed in various shapes, thereby providing an excellent design. It has sex. Therefore, if each lighting device according to the second embodiment is used, the lighting device is not limited to a conventional lighting device that obtains a constant illuminance by simply illuminating a room or the like. A predetermined effect can be obtained for the viewer.

  Furthermore, in each illuminating device according to the second embodiment, unlike the illuminating device 1 according to the first embodiment, the light of the light source unit 30 incident from the incident surface is diffused on the light guide plate provided in the light guide unit. A concave or convex pattern derived as follows is formed. Accordingly, each lighting device according to the second embodiment is generated by a concave or convex pattern formed on the light guide plate in addition to the light that is transmitted through the light guide plate from the outside to the outside. Diffuse light can be derived. Here, each illuminating device according to the second embodiment provides a plurality of diffused light generated in each pattern of the light guide plate by providing concave or convex patterns arranged in a matrix on the main surface of the light guide plate. Thus, the main surface of the light guide plate can act as a substantially uniform surface light source. Moreover, the diffused light generated by the concave or convex pattern formed on the main surface of the light guide plate does not feel dazzling to the viewer and is visually recognized as gentle light that is closer to nature by the viewer.

[Third Embodiment]
Hereinafter, the illuminating device 7 of the 3rd Embodiment of this invention is demonstrated concretely, referring FIG.

  Here, the lighting device 7 of the third embodiment of the present invention includes a power receiving unit to which power is supplied from the outside, a power source unit that is connected to the power receiving unit and converts the power into predetermined driving power, and A light source unit that is connected to a power source unit and emits light by the driving power; a housing unit that houses the light source unit; and a projection that protrudes from the housing unit and splits light from the light source unit that is incident from an incident surface A light guide portion led out from the exit surface, and the light guide portion is provided with a display surface representing predetermined information in a concave or convex pattern on a part or the entire surface of the exit surface. In addition, the configuration of the lighting device 7 according to the third embodiment of the present invention includes a power receiving unit to which power is supplied from the outside, a power source unit that is connected to the power receiving unit and converts the power to predetermined driving power, A light source unit that is connected to the power source unit and emits light by the driving power, a housing unit that houses the light source unit, and a projection that protrudes from the housing unit and branches light from the light source unit that is incident from an incident surface A light guide part that is led out from the emitted light surface, and the light guide part has a concave or convex pattern that leads light from the light source part as diffused light on the light emission surface, and the light emission surface A display surface that represents predetermined information in a concave or convex pattern may be provided on a part or the entire surface.

  In addition, the illuminating device 7 of the 3rd Embodiment of this invention has the characteristics in the light guide part 160 which provided the display surface which represents predetermined information with a concave or convex pattern. Other configurations according to the third embodiment are the same as the configurations described in the first or second embodiment. Specifically, the illuminating device 7 of the third embodiment includes a power receiving unit 10, a power source unit 20, a light source unit 30, and a housing unit 40 having the same specifications as the illuminating device 1 of the first embodiment, The light guide 160 is unique to the illumination device 7 of the third embodiment. Therefore, in the third embodiment, the light guide unit 160 having a configuration different from those of the first and second embodiments will be mainly described. Moreover, the illuminating device 7 of the 3rd Embodiment of this invention is the structure which replaces the light guide part 100 of the illuminating device 1 of 1st Embodiment with the light guide part 160, or each illuminating device of 2nd Embodiment. Any configuration in which each light guide unit is replaced with the light guide unit 160 may be used. In the following description, the illumination device 7 according to the third embodiment of the present invention will be described as a configuration in which each light guide portion of each illumination device according to the second embodiment is replaced with a light guide portion 160.

  In the light guide unit 160 constituting the illumination device 7 of the third embodiment, a display surface 162S is provided on a portion of the light guide plate 162 protruding from the tip 161G of the light guide plate 161, and a concave or convex pattern is formed on the display surface 162S. Predetermined information is expressed by concentrating. Such a light guide unit 160 includes a light guide plate 161 and a light guide plate 162. Hereinafter, each structure of the light guide part 160 is demonstrated. The light guide plate 161 has the same specifications as those of the light guide plate 111 of the light guide unit 110 constituting the illumination device 2 of the second embodiment except for the specifications of the tip 161G and the tip 161G ′. Here, the tip 161G and the tip 161G ′ of the light guide plate 161 are recessed at the center due to the two inclined surfaces facing each other.

  Further, regarding the light guide unit 160, the light guide plate 162 includes specifications of the tip 162G and the tip 162G ′, and a light guide piece 162E in which a display unit 162S is provided between the light guide piece 162A and the light guide piece 162D. Except this, it consists of the same specification as the light guide plate 112 of the light guide unit 110 that constitutes the illumination device 2 of the second embodiment. Here, the tip 162G of the light guide plate 162 has a plurality of recessed shapes due to a plurality of inclined surfaces that are alternately inclined. Here, the front end 162G ′ of the light guide plate 162 is recessed at the center by two opposed inclined surfaces. In addition, the light guide piece 162E corresponds to the light guide piece 112B which is not branched between the light guide piece 112B and the light guide piece 112C of the light guide plate 112 and is integrally formed. Such a light guide piece 162E is provided with a display surface 162S at a portion protruding from the tip 161G of the light guide plate 161 combined with the light guide plate 162, and the display portion 162S has a predetermined pattern in a concave or convex shape. Information is represented. Here, the predetermined information includes, for example, a character, a figure, a trade name, a character, or a symbol, and may be a combination thereof. Specifically, on the display unit 162S shown in FIG. 25, for example, “A” is displayed in uppercase letters of the alphabet by concentrating concave or convex patterns. Note that the display portion 162S is not provided with a concave or convex pattern formed in a matrix.

  As mentioned above, according to the illuminating device 7 which concerns on 3rd Embodiment, similarly to each illuminating device which concerns on 1st and 2nd embodiment, the external shape of a light-guide plate is match | combined with the environment of a facility, and a user preference. Can be determined. That is, in the illuminating device 7 according to the third embodiment, a light guide unit such as a spot type or a light bulb type having different light distribution characteristics and design properties can be provided. Specifically, in the illuminating device 7 according to the third embodiment, similarly to the respective illuminating devices according to the first and second embodiments, the emission surface at the tip of the light guide plate provided in the light guide unit is branched into a plurality of parts. By doing so, the surface area of the side surface that multi-reflects the light inside the light guide plate is increased. Therefore, if the illumination device 7 according to the third embodiment is used, the proportion of light that is directly derived from the light exit surface at the tip of the light guide plate is reduced, and light that is derived from the side surface of the light guide plate is reduced. Since the ratio of increases, the surroundings can be illuminated brightly. That is, the directivity of light derived from the illumination device 7 can be expanded. Furthermore, the light derived from the light guide plate can suppress the viewer from feeling dazzling when entering the eyes of the viewer.

  Moreover, in the illuminating device 7 which concerns on 3rd Embodiment, similarly to each illuminating device which concerns on 1st and 2nd embodiment, the shape of the front-end | tip part of the light-guide plate provided in a light guide part is made into an outer side or an inner side, for example It is set as the shape which provided the recessed part which becomes the curved surface curved toward the surface, a trapezoid trapezoid shape, a truncated cone shape, or the cylindrical shape of a predetermined depth, or a cone shape. Therefore, if the illumination device 7 according to the third embodiment is used, the emission direction of the light derived from the tip of the light guide plate can be controlled to a predetermined angle, and the light is diffusely reflected at the tip of the light guide plate. Since a part of the light is reflected toward the incident surface, the light can be easily multi-reflected inside the light guide plate, and the light derived from the tip of the light guide plate can be substantially condensed light or substantially divergent. Can be light. That is, if the illumination device 7 according to the third embodiment is used, the light intensity distribution of light derived from the light guide unit of the illumination device 7 can be arbitrarily set. For example, the illumination device 7 is orthogonal to the illumination device 7. It is possible to derive light having a substantially uniform light intensity distribution from the direction to the horizontal direction. Note that if the light guide plate is provided so as to extend in the horizontal direction every time the light guide plate is separated from the housing portion, for example, light can be led to the rear in addition to the front of the illumination device 7.

  Similarly, in the illuminating device 7 according to the third embodiment, as in each of the illuminating devices according to the first and second embodiments, the outer shape of the light guide plate provided in the light guide unit is, for example, two light guide plates. The cross shape is obtained by crossing them in three dimensions. Therefore, by using the lighting device 7 according to the third embodiment, light derived from the main surface of the light guide plate can be emitted without being shielded by another light guide plate adjacent to the light guide plate. Can do. Further, the light guide plate provided in the light guide section is transparent, for example, the other main surface opposed to one main surface of the light guide plate can be visually recognized, and for example, other adjacent to one main surface of the light guide plate One main surface of the light guide plate can be visually recognized. That is, even when the light guide unit is viewed from any of the circumferential directions of the illumination device 7, the difference in brightness of light derived from the light guide plate can be suppressed. Further, since two light guide plates provided in a cross shape, for example, are overlapped with the light guide portion, for example, a part of the light that is multiply reflected within one light guide plate is adjacent to the one light guide plate. After being incident on another light guide plate that is overlapped, the light is further reflected multiple times inside the other light guide plate and then led out. That is, the light from the light source incident from the incident surface of the light guide plate is dispersed as diffused light. Therefore, when the viewer visually recognizes the light derived from the light guide plate, the viewer does not feel dazzling and can be recognized as a good surface light source with little difference in brightness.

  Similarly, in the illuminating device 7 according to the third embodiment, similarly to each illuminating device according to the first and second embodiments, by forming the light guide plate provided in the light guide unit in various shapes, Has excellent design. Therefore, when the lighting device 7 according to the third embodiment is used, the lighting device 7 is not limited to a conventional lighting device that obtains a constant illuminance by simply illuminating a room or the like. A predetermined effect can be obtained for the viewer.

  Further, in the illumination device 7 according to the third embodiment, unlike the illumination device 1 according to the first embodiment, the light of the light source unit 30 incident from the incident surface is diffused on the light guide plate provided in the light guide unit. A concave or convex pattern derived as follows is formed. Accordingly, the illumination device 7 according to the third embodiment is generated in a concave or convex pattern formed on the light guide plate in addition to the light transmitted through the light guide plate from the inside to the outside. Diffuse light can be derived. Here, the illuminating device 7 according to the third embodiment provides a plurality of diffused light generated in each pattern of the light guide plate by providing concave or convex patterns arranged in a matrix on the main surface of the light guide plate. Thus, the main surface of the light guide plate can act as a substantially uniform surface light source. In addition, the diffused light generated by the concave or convex pattern formed on the main surface of the light guide plate is dispersed in the light, so that it does not feel dazzling to the viewer, and is more natural for the viewer. Visible as near gentle light.

  Further, in the lighting device 7 according to the third embodiment, unlike each lighting device according to the first and second embodiments, the display surface 162S is provided on the portion of the other light guide plate protruding from the tip of the light guide plate, Predetermined information is represented by a concave or convex pattern on the display surface 162S. Therefore, the lighting device 7 according to the third embodiment as described above improves the design by providing, for example, the name of the facility that uses the lighting device 7 on the display surface 162S. The name and the like can be easily retained in the user's memory.

[Fourth Embodiment]
Hereinafter, the illumination device according to the fourth embodiment of the present invention will be specifically described with reference to FIGS. 26 to 30.

  Here, the illumination device according to the fourth embodiment of the present invention includes a power receiving unit to which electric power is supplied from the outside, a power source unit that is connected to the power receiving unit and converts the power into predetermined driving power, and the power source. A light source unit that emits light by the driving power, a housing unit that houses the light source unit, and a projection that protrudes from the housing unit and splits light from the light source unit that has entered from the incident surface. A light guide section led out from the light exit surface, and the housing section includes an angle adjustment section for adjusting an angle at which the light guide section is disposed. In addition, the configuration of the lighting device according to the fourth embodiment of the present invention includes a power receiving unit to which power is supplied from the outside, a power source unit connected to the power receiving unit and converting the power into predetermined driving power, and A light source unit that is connected to a power source unit and emits light by the driving power; a housing unit that houses the light source unit; and a projection that protrudes from the housing unit and splits light from the light source unit that is incident from an incident surface. A light guide part that is led out from the light exit surface, and the light guide part has a concave or convex pattern that guides light from the light source part as diffused light on the light exit surface, and the housing part May be provided with an angle adjusting unit for adjusting an angle at which the light guide unit is disposed.

  Similarly, the configuration of the illumination device according to the fourth embodiment of the present invention includes a power receiving unit to which power is supplied from the outside, a power source unit that is connected to the power receiving unit and converts the power to predetermined driving power, A light source unit that is connected to the power source unit and emits light by the driving power, a housing unit that houses the light source unit, and a projection that protrudes from the housing unit and branches light from the light source unit that is incident from an incident surface A light guide unit that is led out from the exit surface, wherein the light guide unit has a concave or convex pattern that guides light from the light source unit as diffused light on the exit surface. A display surface representing predetermined information in a concave or convex pattern may be provided on a part or the entire surface, and the casing may be provided with an angle adjustment unit that adjusts an angle at which the light guide unit is disposed. .

  Note that the illumination device according to the fourth embodiment of the present invention is characterized by the light guide 170 and the casing 50 that can adjust the angle of the light guide plate provided in the light guide 170. In addition, the configuration according to the fourth embodiment is the same as the configuration described in the first or second embodiment. Specifically, the illumination device according to the fourth embodiment includes a power reception unit 10, a power source unit 20, a light source unit 30, and a light source unit 30 having the same specifications as those of the illumination device 1 according to the first embodiment. The light guide 170 is unique to the lighting device, and the housing 50 is capable of adjusting the angle of the light guide plate provided in the light guide 170. Therefore, in the fourth embodiment, the light guide unit 170 and the housing unit 50 having different configurations from the first and second embodiments will be mainly described. Moreover, the illuminating device of the 4th Embodiment of this invention is each light guide which concerns on the illuminating device 1 of 1st Embodiment, each illuminating device of 2nd Embodiment, or the illuminating device 7 of 3rd Embodiment. The light guide unit 170 and the housing unit 50 are used to replace either the unit or each housing unit.

  The light guide part 170 which comprises the illuminating device of 4th Embodiment is comprised from the light guide plate 171 as shown in FIG. As shown in FIGS. 27 and 29, such a light guide plate 171 includes a base portion 171A and eight light guide pieces 171B to 171I. Specifically, the light guide plate 171 is integrally formed so that, for example, the light guide pieces 171B to 171I each having a prismatic shape are provided in a cross shape on one surface of the base portion 171A having a disk shape, for example. Molded or joined. A concave or convex pattern is formed on one or more surfaces of the light guide pieces 171B to 171I of the light guide plate 171. In FIG. 26 to FIG. 30, the concave or convex patterns for the light guide pieces 171B to 171I of the light guide plate 171 are not shown. Further, as shown in FIG. 30, a concave or convex pattern is not formed in a matrix on a part of one main surface 171V of the light guide piece 171E of the light guide plate 171 or on the tip 171S of the light guide piece 171D. For example, concave or convex patterns are densely formed so as to represent a star-shaped figure. For example, by joining a semicircular resin (not shown) as a lens on a star-shaped figure expressed by concentrating concave or convex patterns on the tip 171S of the light guide piece 171D, The figure may be enlarged or reduced and projected onto a wall surface or the like.

  The housing part 50 that constitutes the lighting device of the fourth embodiment includes an angle adjustment part 51, a support part 52, a connection part 53, a protection part 54, and a fixing member 55. Hereinafter, each structure of the housing | casing part 50 is demonstrated. With respect to the angle adjustment unit 51 of the housing unit 50, for example, a substrate 32 provided with a light source 31 is mounted on a mounting member 51B formed in a disk shape. Further, a rotating member 51C connected to the mounting member 51B and formed in a spherical shape, for example, is rotatably accommodated in a hole (not shown) provided in the accommodating member 52B of the support portion 52. Further, the upper fixing member 51D is formed in a disk shape, for example, and is provided with a cross-shaped opening through which the light guide pieces 171B to 171I of the light guide plate 171 pass. Here, in a state where the base portion 171A of the light guide plate 171 and the substrate 32 are accommodated between the upper fixing member 51D and the mounting member 51B, they are integrally fixed by a fixing member such as a screw (not shown), for example. Yes. Further, one end of the inner peripheral surface of the cylindrical protective member 51A is joined to the outer peripheral surface of the upper fixing member 51D by, for example, an adhesive. In addition, the support portion 52 of the housing unit 50 is provided with a hole (not shown) that rotatably accommodates the rotation member 51C of the angle adjustment unit 51 in the upper part of a support member 52A formed in a conical shape, for example. A member 52B is provided. Moreover, the groove | channel provided in the inner periphery of 52 C of adjustment members formed in the disk shape so that it may engage with the groove | channel provided in the outer periphery of the storage member 52B is connected. When such an adjustment member 52C is rotated in a predetermined direction, the groove provided on the outer periphery of the storage member 52B is engaged and fixed in a state where the groove provided on the inner periphery of the adjustment member 52C is biased.

  Further, with respect to the housing part 50, the connecting part 53 is fixed in a state where one end of the connecting part 53 is inserted into the lower end of the support member 52 </ b> A of the support part 52. Such a connecting portion 53 is formed in a cylindrical shape having a thread groove formed on the outer periphery. The connecting portion 53 is connected to, for example, a screw hole (not shown) provided in the power receiving unit 10. Moreover, the protection part 54 of the housing | casing part 50 is for accommodating and protecting the angle adjustment part 51 and the support part 52 inside, and is formed in the cylindrical shape. Further, the protective member 54 passes a plurality of fixing members 55 made of, for example, pan-head screws through screw holes 54B provided at regular intervals on the outer peripheral surface 54A of the protective member 54, and the tips of the fixing members 55 are connected to the angle adjusting portion 51. By biasing the outer peripheral surface of the protective member 51A, the angle adjusting unit 51 is fixed at a predetermined angle.

  As mentioned above, according to the illuminating device which concerns on 4th Embodiment, the external shape of a light-guide plate is determined according to the environment of a facility, or a user preference similarly to each illuminating device which concerns on the 1st thru | or 3rd embodiment. can do. That is, in the illuminating device according to the fourth embodiment, it is possible to provide a light guide unit such as a spot type or a light bulb type having different light distribution characteristics and design properties. Specifically, in the illuminating device according to the fourth embodiment, similarly to each of the illuminating devices according to the first to third embodiments, the emission surface at the tip of the light guide plate provided in the light guide unit is branched into a plurality. As a result, the surface area of the side surface that multi-reflects the light inside the light guide plate is increased. Therefore, if the illumination device according to the fourth embodiment is used, the proportion of light that is directly derived from the light exit surface at the tip of the light guide plate is reduced, and the light that is derived from the side surface of the light guide plate is reduced. Since the ratio increases, the surroundings can be illuminated. That is, the directivity of light derived from the lighting device can be expanded. Furthermore, the light derived from the light guide plate can suppress the viewer from feeling dazzling when entering the eyes of the viewer.

  Further, in the illumination device according to the fourth embodiment, the shape of the tip portion of the light guide plate provided in the light guide unit is directed to, for example, the outside or the inside, as in each of the illumination devices according to the first to third embodiments. It can be made into a curved surface, a trapezoidal trapezoidal shape or a truncated cone shape, or a cylindrical shape or a conical shape with a predetermined depth. Therefore, if the illumination device according to the fourth embodiment is used, the light emission direction derived from the tip of the light guide plate can be controlled to a predetermined angle, and the light irregularly reflected at the tip of the light guide plate Since a part of the light is reflected toward the incident surface, the light can be easily multi-reflected inside the light guide plate, and the light derived from the tip of the light guide plate can be substantially condensed light or substantially divergent light. Can be. That is, if the illumination device according to the fourth embodiment is used, the light intensity distribution of light derived from the light guide unit of the illumination device can be arbitrarily set, for example, from a direction orthogonal to the illumination device. Light having a substantially uniform light intensity distribution can be derived in the horizontal direction. In addition, if the light guide plate is provided so as to extend in the horizontal direction every time it is separated from the casing, for example, light can be led out to the rear in addition to the front of the lighting device.

  Similarly, in the illuminating device according to the fourth embodiment, similarly to each of the illuminating devices according to the first to third embodiments, the outer shape of the light guide plate provided in the light guide unit, for example, two light guide plates are three-dimensional. By crossing them together, a cross shape can be obtained. Therefore, by using the illumination device according to the fourth embodiment, light derived from the main surface of the light guide plate can be emitted without being shielded by another light guide plate adjacent to the light guide plate. it can. Further, the light guide plate provided in the light guide section is transparent, for example, the other main surface opposed to one main surface of the light guide plate can be visually recognized, and for example, other adjacent to one main surface of the light guide plate One main surface of the light guide plate can be visually recognized. That is, even when the light guide is viewed from any direction in the circumferential direction of the lighting device, the difference in brightness of light derived from the light guide plate can be suppressed. Further, since two light guide plates provided in a cross shape, for example, are overlapped with the light guide portion, for example, a part of the light that is multiply reflected within one light guide plate is adjacent to the one light guide plate. After being incident on another light guide plate that is overlapped, the light is further reflected multiple times inside the other light guide plate and then led out. That is, the light from the light source incident from the incident surface of the light guide plate is dispersed as diffused light. Therefore, when the viewer visually recognizes the light derived from the light guide plate, the viewer does not feel dazzling and can be recognized as a good surface light source with little difference in brightness.

  Similarly, in the illuminating device according to the fourth embodiment, similarly to each of the illuminating devices according to the first to third embodiments, by forming the light guide plate provided in the light guide unit in various shapes, it is excellent. Design can be provided. Therefore, if the lighting device according to the fourth embodiment is used, it is not limited to a conventional lighting device that obtains a constant illuminance by simply illuminating a room or the like. A predetermined effect can be obtained for a person.

  Furthermore, in the illuminating device according to the fourth embodiment, similarly to the illuminating devices according to the second and third embodiments, the light of the light source unit 30 incident on the light guide plate provided in the light guide unit from the incident surface. Is formed as a concave or convex pattern. Therefore, the illumination device according to the fourth embodiment has a diffusion generated by a concave or convex pattern formed on the light guide plate in addition to the light that is transmitted through the light guide plate from the outside to the outside. Light can be derived. Here, the illumination device according to the fourth embodiment is provided with a plurality of diffused lights generated in each pattern of the light guide plate by providing concave or convex patterns arranged in a matrix on the main surface of the light guide plate. The main surface of the light guide plate can act as a substantially uniform surface light source. Moreover, the diffused light generated by the concave or convex pattern formed on the main surface of the light guide plate does not feel dazzling to the viewer and is visually recognized as gentle light that is closer to nature by the viewer.

  Moreover, in the illuminating device according to the fourth embodiment, similarly to the illuminating device 7 according to the third embodiment, a concave or convex pattern is formed on the main surface or part of the tip of the light guide plate provided in the light guide unit. Predetermined information is represented by being densely packed. Therefore, such a lighting device according to the fourth embodiment can improve the design and make it easy to leave predetermined information to be notified in the user's memory.

  Moreover, in the illuminating device according to the fourth embodiment, unlike the illuminating devices according to the first to third embodiments, the light guide plate of the light guide unit disposed in the illuminating device can be changed to an arbitrary angle. Can be adjusted. Therefore, the lighting apparatus according to the fourth embodiment arbitrarily adjusts the angle of the light guide plate regardless of the angle of the socket provided in the indoor facility into which the base 11 of the power receiving unit 10 of the lighting apparatus is screwed. be able to. Specifically, the lighting device according to the fourth embodiment tilts the light guide plate disposed in the lighting device downward even when the socket is horizontally provided on the upper side of the side wall of the indoor facility, for example. Thus, the room can be illuminated more effectively.

  Next, a method for manufacturing a light guide plate disposed in each of the illumination devices according to the first to fourth embodiments of the present invention will be specifically described with reference to FIGS. 31 to 35 and the like.

  For example, a molding process and a cutting process can be used for the method of manufacturing the light guide plate disposed in the lighting device 1 of the first embodiment. Hereinafter, each manufacturing method will be described. In the molding process, the shape reflecting the outer shape of the light guide plate to be molded is formed inside the mold, for example, after injecting a softened resin heated to the mold mounted on the injection molding machine, The outer shape of the light guide plate is formed by cooling the resin. In the cutting process, the base material for the light guide plate is cut by, for example, end milling using a milling machine to form the outer shape of the light guide plate.

  In addition, for example, ultrasonic processing, heating processing, cutting processing, laser processing, molding processing, and silk printing processing are used for the manufacturing method of the light guide plate disposed in each lighting device of the second to fourth embodiments. be able to. Hereinafter, each manufacturing method will be described. In ultrasonic processing, a concave pattern is formed on the surface of the light guide plate by partially melting the surface of the light guide plate using ultrasonic vibrations of an ultrasonic processing horn in contact with the surface of the light guide plate. . In the heating process, the surface of the light guide plate is partially melted using the heat of the processing tool brought into contact with the surface of the light guide plate, thereby forming a concave pattern on the surface. Similarly, in the cutting process, a concave pattern is formed on the surface of the light guide plate by partially scraping the surface of the light guide plate using a cutting tool that is rotated or biased while being in contact with the surface of the light guide plate. Similarly, in laser processing, the surface of the light guide plate is partially melted using the heat of the laser light condensed on the surface of the light guide plate, thereby forming a concave pattern on the surface.

  Similarly, regarding the manufacturing method of the light guide plate disposed in each lighting device of the second to fourth embodiments, in the molding process, a shape reflecting the outer shape of the light guide plate to be molded is formed inside the mold. For example, by injecting a resin softened by heating with respect to a mold attached to an injection molding machine, the resin is cooled, thereby forming a concave pattern, a convex pattern on the surface of the light guide plate, or Concave and convex patterns are formed. Similarly, in silk printing, a plate having predetermined holes is brought into contact with the surface of the light guide plate, and a curable resin is attached to the surface through the holes, and the surface is partially made of resin. By covering, a convex pattern is formed on the surface. Further, for example, a particulate diffusion member that emits diffused light may be added to a resin used for molding or silk printing. Similarly, for example, a resin that is a base material of a light guide plate that performs the above-described ultrasonic processing, heating processing, cutting processing, or laser processing may be added with a particulate diffusion member that emits diffused light.

  In addition, regarding the manufacturing method of the light-guide plate arrange | positioned at each illuminating device of 2nd thru | or 4th embodiment, it combines the ultrasonic processing mentioned above, a heating process, a cutting process, a laser process, a shaping | molding process, and a silk printing process. A light guide plate may be formed. Specifically, for example, after forming only the outer shape of the light guide plate by molding, for example, a concave pattern may be formed on the surface of the light guide plate by ultrasonic processing. Similarly, after forming only the outer shape of the light guide plate by molding, for example, a convex pattern may be formed on the surface of the light guide plate by silk printing, for example.

  Here, particularly regarding a method of manufacturing a light guide plate by ultrasonic processing, an ultrasonic processing apparatus used for ultrasonic processing and an ultrasonic processing method by the ultrasonic processing apparatus will be described with reference to FIGS. 31 to 35. As shown in FIG. 31, the ultrasonic processing apparatus 1000 includes a housing portion 1010 that houses and houses each component constituting the ultrasonic processing apparatus 1000, and a light guide plate base that is a base material before being formed on the light guide plate. On the main surface of the light guide plate base material D, a processing table portion 1020 for vacuuming and fixing the material D, a moving mechanism portion 1030 for moving an ultrasonic processing portion 1040 described later relative to the light guide plate base material D, and the like. Processing of the ultrasonic processing unit 1040 for contacting the protrusion of the ultrasonic processing horn 1042 and partially heating and melting the main surface by ultrasonic vibration to form a concave pattern, and processing of the light guide plate substrate D It is comprised from the control part 1050 which controls the ultrasonic processing by the ultrasonic processing part 1040 based on conditions. Hereinafter, the constituent devices of the casing unit 1010, the processing table unit 1020, the moving mechanism unit 1030, the ultrasonic processing unit 1040, and the control unit 1050 constituting the ultrasonic processing apparatus 1000 will be described. For convenience of explanation, three-dimensional orthogonal coordinates or two-dimensional orthogonal coordinates shown in each drawing are used as needed.

  As shown in FIG. 31, for example, the housing unit 1010 constituting the ultrasonic processing apparatus 1000 mounts and accommodates the constituent devices constituting the ultrasonic processing apparatus 1000. Such a housing 1010 includes an upper plate 1011, a column 1012, a lower plate 1013, and legs 1014. Hereinafter, the configuration of the housing 1010 will be described. The upper plate 1011 and the lower plate 1013 of the housing unit 1010 are made of, for example, stainless steel and are formed in a plate shape. Note that a controller 1034 of the moving mechanism unit 1030, an ultrasonic oscillator 1043 of the ultrasonic processing unit 1040, a control device 1054 of the control unit 1050, and the like are mounted on the lower plate 1013. Moreover, the support | pillar 1012 of the housing | casing part 1010 consists of stainless steel, for example, and is formed from the rod-shaped and hollow square material. Note that a support member 1051 of the control unit 1050 is attached to the support column 1012 of the casing unit 1010. Moreover, the leg 1014 of the housing | casing part 1010 consists of reinforced plastics, for example, and is formed in the cylindrical shape.

  For example, as shown in FIG. 31, the processing table 1020 constituting the ultrasonic processing apparatus 1000 fixes the light guide plate substrate D, which is a substrate before being formed on the light guide plate, by vacuum suction, for example. Such a processing table portion 1020 includes a processing table 1021, a vacuum pump 1022, a suction pipe 1023, a distributor 1024, and a connector 1025. Hereinafter, the configuration of the processing platform 1020 will be described. The processing table 1021 of the processing table unit 1020 is made of, for example, aluminum and is formed of a plate-like member having a plurality of suction holes 1021A. Such a processing table 1021 is disposed on the upper plate 1011 of the housing portion 1010. Further, for example, as shown in FIG. 32, one end of the suction pipe 1023 is connected to the vacuum pump 1022, and the other end of the suction pipe 1023 is provided on the processing table 1021 via the distributor 1024, for example, as shown in FIG. The suction hole 1021A is connected using a connector 1025. The light guide plate base material D is vacuum-sucked in the suction hole 1021A of the processing table 1021 to prevent the light guide plate base material D from being displaced during processing, and the light guide plate base material D is warped or bent. Etc. are corrected.

  The moving mechanism unit 1030 constituting the ultrasonic processing apparatus 1000 moves the ultrasonic processing unit 1040 relative to the light guide plate substrate D fixed to the processing table unit 1020, for example, as shown in FIG. Specifically, the moving mechanism unit 1030 moves the ultrasonic processing unit 1040 to the X axis shown in FIG. 31 based on the ultrasonic processing information related to the light guide plate substrate D input from the operation panel 1052 of the control unit 1050, for example. , And move to predetermined positions in the Y-axis and Z-axis directions. Such a moving mechanism unit 1030 includes an X-axis rail member 1031, an auxiliary X-axis rail member 1031 ′, a Y-axis rail member 1032, a Z-axis rail member 1033, and a controller 1034. The controller 1034 is for moving the ultrasonic processing unit 1040 to a predetermined position using each rail member based on processing information of the light guide plate base material D input from an operation panel 1052 of the control unit 1050 described later. It is a control device.

  For example, as shown in FIG. 33, the ultrasonic processing unit 1040 constituting the ultrasonic processing apparatus 1000 causes the projection of the ultrasonic processing horn 1042 to abut the main surface of the light guide plate base material D, thereby generating ultrasonic vibrations. The main surface is partially heated and melted to form a concave pattern. Such an ultrasonic processing unit 1040 includes a support member 1041, an ultrasonic processing horn 1042, and an ultrasonic oscillator 1043. Specifically, the ultrasonic processing horn 1042 of the ultrasonic processing unit 1040 is connected to the support member 1041 disposed on the plate 1033B connected to the movable table 1033A of the Z-axis rail member 1033, and the ultrasonic oscillator 1043. On the basis of the drive signal supplied from the front end portion 1042B which abuts on the surface of the light guide plate substrate D and performs ultrasonic processing, and a vibrator 42A provided with a piezoelectric element and a cone member (not shown). As shown in FIG. 33A, the plate 1033B of the Z-axis rail member 1033 is provided with a stopper member 1033D via a support block 1033C, and supports the ultrasonic processing unit 1040. Here, when the ultrasonic processing unit 1040 starts to move downward in the drawing and the tip 1042B of the ultrasonic processing horn 1042 comes into contact with the surface of the light guide plate substrate D, as shown in FIG. After the ultrasonic processing unit 1040 stops and the support block 1033C and the stopper member 1033D are separated from each other and a predetermined time has elapsed, the ultrasonic processing horn 1042 is raised.

  Further, regarding the ultrasonic processing unit 1040 constituting the ultrasonic processing apparatus 1000, the ultrasonic processing horn 1044 shown in FIG. 34 and FIG. 35 is compared with the ultrasonic processing horn 1042 shown in FIG. More processed dots 1045, which are protrusions for partially heating and melting the main surface of the substrate D to form a concave pattern, are formed. Specifically, the processing dots 1045 are formed in a 54 × 29 matrix at a pitch of 2 mm in the range of 110 mm × 60 mm at the tip of the ultrasonic processing horn 1044. The shape of the processing dot 1045 is a quadrangular pyramid having an inclined surface of 45 degrees. Here, when the processing dots 1045 to which ultrasonic waves are applied are brought into contact with the surface of the light guide plate base material D, the light guide plate base material D is partially heated and melted by the vibration of the ultrasonic waves, and the light guide plate base material is melted. A concave pattern composed of a quadrangular pyramid reflecting the shape of the processing dot 1045 is formed on the surface of D. When such an ultrasonic processing horn 1044 is used, if the size of the main surface of the light guide plate is 110 mm × 60 mm or less, a concave pattern is formed on the main surface of the light guide plate by performing ultrasonic processing only once. And the tact associated with the processing of the light guide plate can be shortened. Note that the size of the tip of the ultrasonic processing horn 1044 and the pitch and shape of the processing dots 1045 are not limited to the above specifications. Here, particularly in each of the lighting devices of the first to fourth embodiments of the present application, the size of the main surface of the light guide plate provided in the light guide unit is, for example, 110 mm × 60 mm, and such a region of 110 mm × 60 mm. On the other hand, when the concave pattern is formed in a matrix with a pitch of 2 mm to 2.5 mm, each diffused light generated by the plurality of concave patterns is visually recognized by the viewer as a predetermined pattern. The design of each lighting device is improved.

  The control unit 1050 constituting the ultrasonic processing apparatus 1000 is shown in FIG. 31, for example, and controls ultrasonic processing by the ultrasonic processing unit 1040 based on the processing conditions of the light guide plate base material D. Such a control unit 1050 includes a support member 1051, an operation panel 1052, a display panel 1053, and a control device 1054. Hereinafter, the configuration of the control unit 1050 will be described. The support member 1051 of the control unit 1050 is provided in any of a plurality of support columns 1012 provided in the housing unit 1010, and an operation panel 1052 and a display panel 1053 are provided. In addition, the operation panel 1052 of the control unit 1050 is used by the user to input processing conditions and the like of the light guide plate base material D to the control device 1054. In addition, the display panel 1053 of the control unit 1050 displays processing conditions and the like of the light guide plate base material D input from the operation panel 1052. The control device 1054 of the control unit 1050 includes a control board for driving the entire ultrasonic processing apparatus 1000 based on predetermined control, a memory for recording control conditions, and the like.

  Finally, the configuration and main effects of the above-described lighting device according to the present invention will be described for each claim.

  The lighting device according to claim 1 is connected to the power receiving unit 10 to which electric power is supplied from the outside, the power receiving unit 10 connected to the power receiving unit 10, and the power unit 20 to convert the power into predetermined driving power, A light source unit 30 that emits light by driving power, a housing unit 40 that houses the light source unit 30, and a light source unit 30 that is provided so as to protrude from the housing unit 40 and is incident from the incident surface is derived from the branched emission surface. The light guide 100 to 170 and the holding part for holding the light guide. In the light guides 100 to 170, the light guide plates are vertically crossed and combined to form a vertical The shape viewed from the direction is a cross shape, and the holding portion holds the cross-shaped light guide portion. Here, according to the illuminating device according to claim 1, the ratio of the light that is directly led to the outside from the emission surface at the tip of the light guide plate provided in the light guide unit 100 to the light guide unit 170 is reduced, Since the ratio of light derived from the side surface of the light guide plate increases, the surroundings can be illuminated brightly. That is, the directivity of light derived from the lighting device can be expanded. Furthermore, the light derived from the light guide plate can suppress the viewer from feeling dazzling when entering the eyes of the viewer. Furthermore, in the light guide unit 100 to the light guide unit 170, for example, two light guide plates provided in a cross shape overlap each other, so that, for example, a part of the light that is multiply reflected within one light guide plate is After being incident on another light guide plate stacked adjacent to one light guide plate, the light is further subjected to multiple reflection inside the other light guide plate and then led out. That is, the light from the light source incident from the incident surface of the light guide plate is dispersed as diffused light. Therefore, when the viewer visually recognizes the light derived from the light guide plate, the viewer does not feel dazzling and can be recognized as a good surface light source with little difference in brightness.

  In the illumination device according to claim 2, a concave or convex pattern that guides the light of the light source unit 30 as diffused light is formed on the emission surfaces of the light guide unit 110 to the light guide unit 150. It is a feature. In the illumination device according to claim 3, the light guide plate is formed on both surfaces of the concave pattern facing each other so as to gradually deepen from the incident surface toward the tip of the light guide piece. Yes. In the illumination device according to claim 4, the holding portion includes a pair of holding members, and the groove portion opened at the center of each holding member is inserted and engaged with the engaging portion of the light guide plate. The light guide is held. Here, according to the illumination device of the second aspect, the concave or convex pattern is arranged in a matrix on the main surface of the light guide plate provided in the light guide unit 110 to the light guide unit 150. The main surface of the light guide plate can be made to act as a substantially uniform surface light source by a plurality of diffused light generated in each pattern of the light guide plate. Moreover, the diffused light generated by the concave or convex pattern formed on the main surface of the light guide plate does not feel dazzling to the viewer and is visually recognized as gentle light that is closer to nature by the viewer.

  Further, in the illumination device according to claim 5, the cross-sectional shape of the light guide unit in the horizontal direction is formed by radiating in a cross shape from the center of the housing 40, for example, the cross-sectional shape of the light guide plate 107 illustrated in FIG. Similarly, as shown in a cross-sectional shape of a light guide plate (not shown) formed by radiating in the form of a trident from the center of the housing 40, there are provided exit surfaces that extend in directions away from the entrance surface and face each other. It is characterized by being. According to the illumination device of the fifth aspect, the light derived from the main surface of the light guide plate provided in the light guide unit is not shielded by another light guide plate adjacent to the light guide plate. Can be released. Further, the light guide plate provided in the light guide section is transparent, for example, the other main surface opposed to one main surface of the light guide plate can be visually recognized, and for example, other adjacent to one main surface of the light guide plate One main surface of the light guide plate can be visually recognized. That is, even when the light guide is viewed from any direction in the circumferential direction of the lighting device, the difference in brightness of light derived from the light guide plate can be suppressed.

  Further, in the illumination device according to claim 6, the horizontal cross-sectional shape of the light guide unit is a polygonal shape corresponding to, for example, the light guide plate 105 and the light guide plate 105 ′ illustrated in FIG. Similarly, for example, the light guide plate 106 and the light guide plate 106 ′ illustrated in FIG. 13 are formed in a circular shape, an elliptical shape, or a conical shape whose cross-sectional area decreases as the distance from the incident surface increases. . The lighting device according to claim 7 is formed such that the horizontal cross-sectional shape of the light guide portion is a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which the cross-sectional area decreases as the distance from the incident surface increases. It is characterized by being. The lighting device according to claim 8 is characterized in that the horizontal cross-sectional shape of the light guide portion is formed so as to increase or decrease each time the light guide portion moves away from the incident surface. Therefore, according to the illuminating device according to any one of claims 6 to 8, since the light guides are processed into special shapes, multiple reflections are likely to occur inside the light guide, and the design is good. In addition, it is possible to suppress the difference in light intensity distribution depending on the viewing angle.

  The lighting device according to claim 9 is characterized in that a plurality of the light guide pieces according to claim 1 are formed so as to have the same or different length from the incident surface. An illumination device according to a tenth aspect is characterized in that the tip of the light guide piece according to the first aspect is formed by a curved surface or an inclined surface. An illumination device according to an eleventh aspect is characterized in that a concave portion made of a columnar shape or a conical shape having a predetermined depth is formed at the tip of the light guide piece according to the first aspect. The illumination device according to claim 12 is characterized in that the tip of the light guide piece according to claim 1 is formed in a trapezoidal trapezoidal shape or a truncated cone shape. The lighting device according to claim 13 is a cone whose cross-sectional area decreases each time the light guide piece extended from the incident surface according to claim 1 is polygonal, circular, elliptical, or away from the incident surface. It is characterized by being formed into a shape. Here, according to the illuminating device according to any one of the ninth to thirteenth aspects, the emission direction of the light derived from the tips of the light guide plates provided in the light guides 100 to 170 is controlled to a predetermined angle. And a part of the light irregularly reflected at the tip of the light guide plate is reflected toward the incident surface, so that the light can be easily multi-reflected inside the light guide plate. The light derived from can be made into substantially condensed light or substantially divergent light. That is, if the illumination device according to the first embodiment is used, the light intensity distribution of light derived from the light guide unit of the illumination device can be arbitrarily set, for example, from a direction orthogonal to the illumination device. Light having a substantially uniform light intensity distribution can be derived in the horizontal direction. In addition, if the light guide plate is provided so as to extend in the horizontal direction every time it is separated from the housing portion, for example, light can be led out in addition to the front of the illumination device.

  Further, the lighting device according to claim 14 is configured such that the light guide unit according to claim 1 is provided with another light guide plate 102 or a light guide at a notch portion or a protruding portion where the tip of the light guide plate 101 or the light guide plate 111 is branched. It is characterized in that the incident surface of the optical part 112 is inserted and combined. Therefore, according to the illumination device of the fourteenth aspect, a required three-dimensional shape can be easily obtained by arbitrarily combining a plurality of light guide plates. Further, for example, when two light guide plates provided in the light guide unit 100 to the light guide unit 170 are crossed in a three-dimensional manner to form a cross shape, the light derived from the main surface of the light guide plate is The light can be emitted without being shielded by another light guide plate adjacent to the light guide plate. Further, the light guide plate provided in the light guide section is transparent, for example, the other main surface opposed to one main surface of the light guide plate can be visually recognized, and for example, other adjacent to one main surface of the light guide plate One main surface of the light guide plate can be visually recognized. That is, even when the light guide is viewed from any direction in the circumferential direction of the lighting device, the difference in brightness of light derived from the light guide plate can be suppressed.

  In the illumination device according to claim 15, the light guide unit 100 to the light guide unit 170 are coated with a silicone coating agent, a glass coating agent, or a transparent resin. Here, according to the illumination device of the fifteenth aspect, the light guide unit 100 to the light guide unit 170 can be waterproof, antifouling, and dustproof.

The present invention includes the following contents.
(1) A power receiving unit to which power is supplied from the outside, a power source unit that is connected to the power receiving unit and converts the power into predetermined driving power, and a light source unit that is connected to the power source unit and emits light by the driving power And a light guide part that protrudes from the housing part and guides the light of the light source part incident from the incident surface from the branched exit surface. The said housing | casing part is provided with the angle adjustment part which adjusts the angle which arrange | positions the said light guide part, The illuminating device characterized by the above-mentioned.
(2) The illumination device according to (1), wherein a concave or convex pattern that guides light from the light source unit as diffused light is formed on the emission surface of the light guide unit.
(3) The illumination device according to (2), wherein the light guide section includes one or more exit surfaces.
(4) The light guide section has a horizontal cross-sectional shape that is formed radially from the center of the housing, extends in a direction away from the incident surface, and is provided with the emission surfaces facing each other. The lighting device according to (1), characterized in that:
(5) The illumination device according to (1), wherein the light guide unit is formed in a cross shape when viewed from the vertical direction, and is provided with eight or more exit surfaces.
(6) The cross-sectional shape in the horizontal direction of the light guide section is formed from a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which the cross-sectional area decreases as the distance from the incident surface increases. The lighting device according to (1), characterized in that:
(7) The horizontal cross-sectional shape of the light guide section is formed from a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which a cross-sectional area decreases as the distance from the incident surface increases. The lighting device according to 1).
(8) The lighting device according to (1), wherein a cross-sectional shape in a horizontal direction of the light guide portion is formed so as to become larger or smaller as the distance from the incident surface increases.
(9) The illuminating device according to (1), wherein the light guide section includes a plurality of light guide pieces whose output surfaces are branched.
(10) The lighting device according to (9), wherein a plurality of the light guide pieces are formed so that lengths from the incident surface are equal or different.
(11) The illumination device according to (9), wherein the light guide piece is formed of a curved surface or an inclined surface.
(12) The illumination device according to (9), wherein the light guide piece is formed with a concave portion having a columnar shape or a conical shape with a predetermined depth.
(13) The lighting device according to (9), wherein the light guide piece is formed in a trapezoidal trapezoidal shape or a truncated cone shape.
(14) The light guide piece extended from the incident surface is formed to have a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which a cross-sectional area decreases as the distance from the incident surface increases. The lighting device according to (9).
(15) The light guide piece is formed by inserting and combining the incident surface of another light guide part into a notch part or a protruding part where the tip of the light guide part is branched. The lighting device according to (9).
(16) The illuminating device according to (2), wherein the concave pattern or the convex pattern is formed so as not to face each other or to be the same face-to-face with respect to the opposing emission surface.
(17) The illumination according to (2), wherein the concave pattern or the convex pattern is formed so as to be deeper each time the distance from the incident surface is greater than the opposed emission surface. apparatus.
(18) The illumination according to (2), wherein the concave pattern is formed by any one or more of ultrasonic processing, heating processing, cutting processing, laser processing, and molding processing. apparatus.
(19) The lighting device according to (2), wherein the convex pattern is formed by one or more of a molding process and a silk printing process.
(20) The illumination device according to (1), wherein the light guide unit is coated with a silicone coating agent, a glass coating agent, or a transparent resin.
(21) The lighting device according to (1), wherein the light source units are arranged radially from the center of the casing.
(22) The illumination device according to (21), wherein the light source units are arranged in a radial manner so as to have a trident or cross shape.
(23) The illumination device according to (1), wherein the casing includes a heat radiating unit that radiates heat generated in the light source unit.
(24) The housing portion includes a holding portion that is fitted and fixed to the light guide portion, and the holding portion includes an opaque reflection layer that covers the light source portion and reflects light toward the light guide portion side. The lighting device according to (1), wherein the lighting device is provided.
(25) The holding portion is provided with a fixing hole for fixing the housing with a fixing member, and after fixing the holding portion with the fixing member, the fixing hole is sealed with an adhesive containing a reflective agent. The lighting device according to (24), characterized in that:

1, 2, 3, 4, 5, 6, 7 Lighting device 10 Power receiving portion 11 Base 12 Insulating case 12A One end 12B Other end 12C Joint portion 12D Internal space 12E Screw hole 13 Insulating case cover 13A Joint portion 13B Screw hole 13C Wiring hole 20 Power supply unit 21 Power supply unit 30 Light source unit 31 Light source 32 Substrate 32A Screw hole 32B Wiring hole 40 Housing part 41 Housing 41A One surface 41B Hole 41C Wiring hole 41D Screw hole 41E, 41E ', 41E''Outer peripheral surface 41F Engaging groove 42 outer peripheral cover 42A joint part 43 holding member 43A groove part 43B projection part 43C side wall 43D hole 44 fixing member 45 fixing member 50 housing part 51 angle adjustment part 51A protection member 51B mounting member 51C rotating member 51D upper fixing member 52 support part 52A Support member 52B Storage member 52C Adjustment member 53 Connection part 54 Protection part 54A Outer peripheral surface 54 Screw hole 55 Fixing member 100,110,120,130,140,150,160,170 Light guide part 101,102,103,104A, 104B, 104C, 104D, 104E, 104F, 104G, 104H, 105,105 ', 106, 106 ', 107, 107', 111, 112, 113, 114, 115, 116C, 116D, 116E, 116F, 117, 121, 122, 131, 132, 141, 142, 151, 152, 161, 162 171 Light guide plates 101A, 101B, 101C, 101D, 102A, 102B, 102C, 102D, 103A, 103B, 103C, 103D, 104A ′, 104B ′, 104C ′, 104D ′, 104E ′, 104F ′, 104G ′, 104H ′ , 111A, 111B, 111C, 111D , 112A, 112B, 112C, 112D, 113A, 113B, 113C, 113D, 114A, 114B, 114C, 114D, 115A, 115B, 115C, 115D, 121A, 121B, 121C, 121D, 122A, 122B, 122C, 122D, 131A , 131B, 132A, 132B, 141A, 141B, 151A, 151B, 151C, 151D, 152A, 152B, 152C, 152D, 162A, 162D, 162E, 171B, 171C, 171D, 171E, 171F, 171G, 171H, 171I Fragments 101F, 102F, 103F, 111F, 112F, 113F, 114F, 115F, 117F Incident surfaces 101G, 101G ′, 102G, 102G ′, 103G, 103G ′, 111G, 1 1G ′, 112G, 112G ′, 113G, 113G ′, 114G, 114G ′, 115G, 115G ′, 121G, 122G, 131G, 132G, 141G, 142G, 151G, 152G, 161G, 161G ′, 162G, 162G ′, 171S Tip 101H, 102H, 111H, 112H Engagement part 102J, 112J Joining part 101L, 101M, 101N, 102L, 102M, 102N, 103L, 103M, 103N, 111L, 111M, 111N, 112L, 112M, 112N, 113L, 113M, 113N, 114L, 114M, 114N, 115L, 115M, 115N Notch 103V, 113V, 114V, 115V, 117C, 171V One main surface 103Q, 113Q, 114Q, 115Q, 117D Other main surface 113W , 113R, 114W, 114R, 115W, 115R, 111P, 112P, 116A, 116B, 117A Pattern 117A ′ Bottom 117M One surface 117N Other surface 151U, 152U Side surface 162S Display portion 171A Base material portion 1000 Ultrasonic processing apparatus 1010 Housing portion 1011 Upper plate 1012 Support column 1013 Lower plate 1014 Leg 1020 Processing platform 1021 Processing platform 1021A Suction hole 1022 Vacuum pump 1023 Suction piping 1024 Distributor 1025 Connector 1030 Moving mechanism 1031 X-axis rail member 1031 ′ Auxiliary X-axis rail member 1032 Y-axis Rail member 1033 Z-axis rail member 1033A Movable table 1033B Plate 1033C Support block 1033D Stopper member 1034 Controller 1040 Ultrasonic machining unit 1041 Support member 1 042, 1044 Ultrasonic Machining Horn 1042A Transducer 1042B Tip 1043 Ultrasonic Oscillator 1045 Machining Dot 1050 Control Unit 1051 Support Member 1052 Control Panel 1053 Display Panel 1054 Control Device E Eye P1 Pitch P2 Half Pitch L1, L2 Incident Light D Guide Optical plate base material

Claims (15)

A power receiving unit to which power is supplied from the outside;
A power supply unit connected to the power receiving unit and converting the power into predetermined driving power;
A light source unit connected to the power source unit and emitting light by the driving power;
A housing portion that houses the light source portion;
A light guide part comprising a light guide plate provided projecting from the housing part and provided with a plurality of light guide pieces for guiding light of the light source part incident from an incident surface to be led out from an emission surface branched by a notch portion;
A holding part for holding the light guide part,
In the light guide section, the light guide plates are crossed in a three-dimensional manner to form a cross shape when viewed from the vertical direction, and the holding section holds the cross-shaped light guide section. A lighting device. 2. The lighting device according to claim 1, wherein a concave or convex pattern that guides light from the light source unit as diffused light is formed on one or more surfaces of the emission surface of the light guide plate.   The lighting device according to claim 2, wherein the light guide plate is formed on both surfaces of the concave pattern facing each other so as to be gradually deeper from the incident surface toward a tip of the light guide piece. The holding portion includes a pair of holding members, and the groove portion opened in the center of each holding member is inserted into and engaged with the engaging portion of the light guide plate, thereby holding the light guide portion. The lighting device according to claim 1. The light guide section has a horizontal cross-sectional shape that is formed radially from the center of the casing, extends in a direction away from the incident surface, and is provided with the emission surfaces facing each other. The lighting device according to claim 1. The horizontal cross-sectional shape of the light guide section is formed from a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which the cross-sectional area decreases each time the distance from the incident surface, with a space provided inside. The lighting device according to claim 1. The horizontal cross-sectional shape of the light guide part is formed from a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which a cross-sectional area decreases as the distance from the incident surface increases. The lighting device described. The lighting device according to claim 1, wherein a cross-sectional shape in a horizontal direction of the light guide portion is formed so as to increase or decrease as the distance from the incident surface increases. The lighting device according to claim 1, wherein a plurality of the light guide pieces are formed so that lengths from the incident surface are equal or different. The lighting device according to claim 1, wherein a tip end of the light guide piece is formed by a curved surface or an inclined surface. The lighting device according to claim 1, wherein a concave portion having a columnar shape or a conical shape with a predetermined depth is formed at a tip of the light guide piece. The lighting device according to claim 1, wherein a tip end of the light guide piece is formed in a trapezoidal trapezoidal shape or a truncated cone shape. The light guide piece extended from the incident surface is formed to have a polygonal shape, a circular shape, an elliptical shape, or a conical shape in which a cross-sectional area decreases as the distance from the incident surface increases. Item 2. The lighting device according to Item 1. The said light guide part is formed by inserting and combining the said incident surface of the said other light guide plate in the said notch part where the front-end | tip of the said light guide plate branched. Lighting device. The lighting device according to claim 1, wherein the light guide piece is coated with a silicone coating agent, a glass coating agent, or a transparent resin.

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