JP2014099310A - Illuminating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illuminating apparatus capable of further converting light emitted from a light-emitting part into diffusion light and reflecting the diffusion light.SOLUTION: The illuminating apparatus includes: a light source part including a light source for emitting light by electric power supplied from a power supply part; a light emission part projected downward from a ceiling surface of a facility or laterally from a wall surface of the facility to diffuse light incident from the light source part and illuminate the circumference; a diffuse reflection part disposed on an upper part or a side part of the light emission part and including a diffusion reflection plate for reflecting light derived from the light emission part; and an attachment holding part attached to the ceiling surface or the wall surface to hold the diffusion reflection part.

Description

  The present invention relates to an illumination device that can effectively use emitted light.

  Conventionally, with respect to an illuminating device used for diffusing light from light sources such as a plurality of fluorescent tubes arranged in a plane to generate soft illumination light from a wide plane, a number of fluorescent lamps, etc. There is a configuration in which the light cover can be easily opened and closed when the light source is arranged and the surface illumination is formed by covering the light source with a large number of light covers (see, for example, Patent Document 1).

  In addition, regarding a lighting device using a light emitting diode, the refractive index of the surfaces constituting the third side and the fourth side connected to the first side of the square is made larger than the refractive index of air, and light from the light emitting diode is emitted. However, there is a configuration in which the surfaces constituting the third side and the fourth side are formed so as to be substantially totally reflected by the surfaces constituting the third side and the fourth side (see, for example, Patent Document 2).

JP 2001-307533 A JP 2005-174727 A

  However, in the configuration as described above, although the light emitted from the lighting device illuminates the ceiling surface, for example, there is a problem that the light reflected by the ceiling surface cannot be fully utilized.

  In view of the above-described technical problems, an object of the present invention is to provide an illuminating device that can convert light emitted from a light emitting unit into diffused light and reflect it.

  In order to solve the above-described problems, an illumination device according to the present invention includes a light source unit provided with a light source that emits light by power supplied from a power source unit, and a downward direction from the ceiling surface of the facility or from the wall surface of the facility. A light emitting part that projects toward the light source, diffuses light incident from the light source part to illuminate the surroundings, and is disposed above or on the side of the light emitting part to reflect the light derived from the light emitting part It has a diffuse reflection part provided with a diffuse reflection plate, and an attachment holding part that is attached to the ceiling surface or wall surface and holds the diffuse reflection part.

  According to the lighting device according to the present invention, the light emitted from the light emitting unit can be further converted into diffused light and reflected.

It is a perspective view which shows the illuminating device 1 which concerns on the 1st Embodiment of this invention, (a) is a perspective view which shows the illuminating device 1 from the downward direction, (b) is a perspective view which shows the illuminating device 1 from upper direction. It is the disassembled perspective view which decomposes | disassembles the illuminating device 1 which concerns on the 1st Embodiment of this invention for every structure, and shows from the downward direction. It is a disassembled perspective view which decomposes | disassembles the illuminating device 1 which concerns on the 1st Embodiment of this invention for every structure, and shows from upper direction. It is sectional drawing which shows the diffuse reflection board 31 provided in the diffuse reflection part 30 which comprises the illuminating device 1 which concerns on the 1st Embodiment of this invention, and the surface 31m was formed with several various concave parts, (a). A cross-sectional view showing a diffuse reflector 31 in which a plurality of concave portions 31a having a predetermined depth are formed, (b) is a cross-sectional view showing a diffuse reflector 31 in which a plurality of pyramidal concave portions 31b are formed, and (c) is a cross-sectional view. A cross-sectional view showing a diffuse reflector 31 in which a plurality of truncated pyramid-shaped concave portions 31c are formed, (d) is a cross-sectional view showing a diffuse reflector 31 in which a plurality of conical concave portions 31d are formed, and (e) is a cone. It is sectional drawing which shows the diffuse reflection board 31 in which the trapezoidal recessed part 31e was formed in multiple numbers. It is sectional drawing which shows the diffuse reflection board 31 provided in the diffuse reflection part 30 which comprises the illuminating device 1 which concerns on the 1st Embodiment of this invention, and the surface 31m was formed with several various convex-shaped parts, (a). Is a cross-sectional view showing a diffuse reflector 31 having a plurality of convex portions 31f having a predetermined height, and (b) is a cross-sectional view showing the diffuse reflector 31 having a plurality of pyramidal convex portions 31g. c) is a cross-sectional view showing a diffuse reflector 31 in which a plurality of truncated pyramid-shaped convex portions 31h are formed; (d) is a cross-sectional view showing the diffuse reflector 31 in which a plurality of conical convex portions 31i are formed; (E) is sectional drawing which shows the diffuse reflection board 31 in which multiple truncated cone-shaped convex part 31j was formed. It is a schematic diagram which shows the optical characteristic of the illuminating device 1 which concerns on the 1st Embodiment of this invention, (a) is a schematic diagram which shows one example of the optical characteristic of the illuminating device 1, (b) is the illuminating device 1 It is a schematic diagram which shows the other example of an optical characteristic. It is a perspective view which shows the illuminating device 2 which concerns on the 2nd Embodiment of this invention, (a) is a perspective view which shows the illuminating device 2 from the downward direction, (b) is a perspective view which shows the illuminating device 2 from upper direction. It is a disassembled perspective view which decomposes | disassembles a part of illuminating device 2 which concerns on the 2nd Embodiment of this invention for every structure, and shows from the downward direction.

  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. In the following description, the material, shape, and the like of each constituent member that configures the lighting device of the present invention are examples, and can be appropriately changed to other materials, shapes, and the like.

  Moreover, in the following description, the illuminating device 1 which concerns on the 1st Embodiment of this invention is demonstrated first, referring FIG. 1 thru | or FIG. Next, the illuminating device 2 which concerns on the 2nd Embodiment of this invention is demonstrated, referring FIG.7 and FIG.8. Furthermore, the manufacturing method of the light guide plates 21 and 22 of the light emission part 20 provided in the illuminating device 1 which concerns on this invention, and the diffuse reflection pieces 71 thru | or 73 of the diffuse reflection part 70 provided in the illuminating device 2 is demonstrated. Finally, the configuration and main effects of the lighting devices 1 and 2 according to the present invention will be described for each claim.

[First Embodiment]
As shown in FIGS. 1 and 2, the lighting device 1 according to the first embodiment of the present invention further converts the light emitted from the light emitting unit 20 into diffused light and reflects it. Hereinafter, the lighting device 1 according to the first embodiment of the present invention will be specifically described with reference to FIGS. 1 to 6. First, the configuration of the illumination device 1 will be described with reference to FIGS. 1 to 3, and then the optical characteristics of the illumination device 1 will be described with reference to FIGS. 4 to 6.

  First, the structure of the illuminating device 1 is demonstrated concretely, referring FIG. 1 thru | or FIG. Here, as shown in FIG. 1, the lighting device 1 includes a housing 50 and a power supply 60 in addition to the light source 10, the light emitting unit 20, the diffuse reflection unit 30, and the attachment holding unit 40. Therefore, the above configuration of the lighting device 1 will be described in order.

  As shown in FIG. 2, the light source unit 10 of the illumination device 1 includes a light source (LED 11) that emits light by the power supplied from the power supply unit.

  Such a light source unit 10 includes a plurality of LEDs 11 and a light source substrate 12 on which the plurality of LEDs 11 are mounted in a predetermined arrangement. Hereinafter, each component of the light source unit 10 will be described in order. The LEDs 11 of the light source unit 10 are composed of surface-mounted light emitting diodes (LEDs) having a white light emission wavelength, and a plurality of LEDs 11 are mounted in a predetermined arrangement on a light source substrate 12 described later. The LED 11 is selected and used in daylight color with a color temperature of about 3000 Kelvin or cold white with a color temperature of about 5500 Kelvin. Here, the emission wavelength of the LED 11 is not limited to white, and may be selected from wavelengths corresponding to any of red, orange, yellow, green, blue, indigo or purple, or a plurality of wavelengths. The colors may be mixed and converted to white. In addition, the light emission wavelength of the LED is not limited to the visible light region, and after selecting the wavelength in the ultraviolet region, the light guide plates 21 and 22 (to be described later) generate and derive fluorescence in the visible light region. Also good. Instead of the LED 11, an organic light emitting diode, a fluorescent tube, a cold cathode tube, an incandescent bulb, a neon tube, or the like may be used. The light source substrate 12 of the light source unit 10 is a member for mounting the LEDs 11 in a predetermined arrangement. Such a light source substrate 12 is made of a glass epoxy substrate excellent in workability, and is formed in a disk shape. Here, as shown in FIGS. 2 and 3, the light source substrate 12 has a total of nine LEDs 11 in a cross shape along incident surfaces 21f and 22f of light guide plates 21 and 22 combined in a cross shape, which will be described later. Implemented in an array.

  As shown in FIGS. 2 and 3, the light emitting unit 20 of the lighting device 1 is provided so as to protrude downward from the ceiling surface of the facility or to the side from the wall surface of the facility, and diffuses light incident from the light source unit 10. Illuminate the surroundings.

  The light guide plates 21 and 22 of the light emitting unit 20 are made of resin plates that are transparent in the visible light region, such as acrylic resin or polycarbonate formed by polymerizing acrylic acid or methacrylic acid. Here, the light of the LED 11 incident from the incident surfaces 21f and 22f of the light guide plates 21 and 22 propagates through the inside of the light guide plates 21 and 22, and then from the inside of the light guide plates 21 and 22 to the outside through the main surface and the like. To be derived. The light guide plates 21 and 22 are arranged in a cross shape as shown in FIG. As shown in FIG. 3, such a light guide plate 21 has a plate shape, and the front end facing the light incident surface 21 f has a light guide piece 21 a, a light guide piece 21 b, a light guide piece 21 c, and a light guide piece 21 d. It is branched into four. Furthermore, the light guide plate 21 is formed such that the lengths of the light guide pieces 21b and the tip 21s of the light guide piece 21c are longer than the lengths of the light guide pieces 21a and the tip 21t of the light guide piece 21d. The light guide plate 21 has a depth between a notch 21k formed between the light guide piece 21a and the light guide piece 21b and a notch 21n formed between the light guide piece 21c and the light guide piece 21d. Are formed to be substantially equal. Further, the light guide plate 21 is formed such that the depth of the cutout portion 21m is deeper than the depth of the cutout portion 21k and the cutout portion 21n formed adjacent to the left and right.

  In addition, the light guide plate 22 inserted and combined with the light guide plate 21 of the light emitting unit 20 is formed in a plate shape as shown in FIG. 3, and the tip facing the light incident surface 22 f is similar to the light guide plate 21. The light guide piece 22a, the light guide piece 22b, the light guide piece 22c, and the light guide piece 22d are branched into four. Further, in the light guide plate 22, as with the light guide plate 21, the lengths of the light guide pieces 22b and the front end 22s of the light guide piece 22c are longer than the lengths of the light guide pieces 22a and the front end 22t of the light guide piece 22d. It is formed as follows. Similarly to the light guide plate 21, the light guide plate 22 is formed between the notch 22k formed between the light guide piece 22a and the light guide piece 22b, and the light guide piece 22c and the light guide piece 22d. It is formed so that the depth with the notch 22n is substantially equal. Further, like the light guide plate 21, the light guide plate 22 is formed such that the depth of the notch 22m is shallower than the depth of the notch 22k and the notch 22n formed adjacent to the left and right. . Here, the light guide plate 22 is inserted into the light guide plate 21 so that the cutout portion 21m of the light guide plate 21 and the joint portion 22j provided at the center of the incident surface 22f of the light guide plate 22 are joined. In addition, when the notch 21m of the light guide plate 21 and the joint 22j of the light guide plate 22 are joined, the light guide plate 21 so that the incident surface 21f of the light guide plate 21 and the incident surface 22f of the light guide plate 22 are located on the same plane. 21 and the light guide plate 22 are formed.

  Further, as shown in FIG. 3, the light guide plates 21 and 22 of the light emitting unit 20 have concave portions 21p and 22p that lead out light incident from an LED (corresponding to reference numeral 11 in FIG. 2) as diffused light on the main surface. It is formed in a matrix. Moreover, the recessed part 21p formed in the light-guide plate 21 consists of a quadrangular pyramid, and is provided in the main surface at intervals of 1 mm to 6 mm. Here, the light guide pieces 21a to 21d provided on the light guide plate 21 are formed with four side surfaces, and any of the side surfaces corresponds to the main surface. Further, the concave portions 21p formed on the opposing main surfaces of the light guide plate 21 are relatively shifted by a half pitch on the front and back of the light guide plate 21. Here, most of the diffused light generated in the plurality of recesses 21p formed on one of the main surfaces of the light guide plate 21 is derived from the other main surface of the light guide plate 21 as substantially uniform surface-emitting light. The Moreover, you may form so that the depth of the recessed part 21p of the light-guide plate 21 may become deep whenever it leaves | separates from the incident surface 21f. By forming the recess 21p of the light guide plate 21 in this way, even if the amount of light of the LED 11 incident from the incident surface 21f of the light guide plate 21 decreases every time the light is separated from the incident surface 21f, the light incident from the incident surface 21f. Since the shape of the concave portion 21p increases every time it is separated, the decrease in the amount of diffused light generated in the concave portion 21p can be suppressed. Therefore, even when the light guide plate 21 is long and the LEDs 11 are arranged in the short direction, the main surface of the light guide plate 21 regardless of the distance from the incident surface 21f of the light guide plate 21. Therefore, uniform surface emission can be derived. Further, even if the convex portions are formed in a matrix on the main surface of the light guide plate 21, diffused light can be generated as in the case where the concave portions are formed in a matrix. Here, the specification of the recess 22p formed in the light guide plate 22 is the same as the specification of the recess 21p formed in the light guide plate 21 described above.

  In addition, although the light guide plates 21 and 22 of the light emitting unit 20 have been described as transparent resin plates in the visible light region, resin plates colored in blue or red may be used. The light guide plates 21 and 22 may be resin plates to which a fine particle diffusion member that emits diffused light when irradiated with light is added. Furthermore, as the light guide plates 21 and 22, resin plates to which a fluorescent agent that emits fluorescence when irradiated with light in the ultraviolet region or visible light region is applied or added may be used. Further, the light guide plates 21 and 22 are respectively applied with a silicone coating agent or a glass coating agent (not shown) having functions such as waterproof, antifouling and dustproof, or having functions such as waterproof, antifouling and dustproof. A transparent resin (not shown) may be coated.

  As shown in FIG. 1, the diffuse reflection unit 30 of the lighting device 1 is provided above or on the side of the light emitting unit 20 and includes a diffuse reflection plate 31 that reflects light derived from the light emitting unit 20.

  Such a diffuse reflection part 30 is comprised from the diffuse reflection board 31 and the outer frame board 32, as shown in FIG.2 and FIG.3. Hereinafter, the configuration of the diffuse reflection unit 30 will be described. The diffuse reflector 31 of the diffuse reflector 30 is made of aluminum or a transparent material, and is formed of a circular flat plate or a curved plate. Further, the surface 31m formed on the lower surface of the diffuse reflector 31 may be formed in a mirror shape having a predetermined flatness. Furthermore, you may form in the surface 31m of the diffuse reflector 31 the concave part which consists of dot shape or a line shape, the convex part which consists of a dot shape or a line shape, or what combined them. In addition, on the back surface 31r formed on the upper surface of the diffuse reflector 31, three hemispherical protrusions 31k that are in contact with the ceiling surface of the external facility are formed on the same circumference. The outer frame plate 32 of the diffuse reflection part 30 is made of aluminum, and is formed in a cylindrical shape so as to surround the circular diffuse reflection plate 31. Here, the outer peripheral part 31p of the diffuse reflector 31 is joined to the outer peripheral part 32p provided at the upper end of the outer frame board 32 using an adhesive.

  In addition, a plurality of concave portions having a dot shape or a linear shape, convex portions having a dot shape or a linear shape, or a combination thereof are formed on the surface 31 m of the diffuse reflection plate of the diffuse reflection portion 30. Here, FIG. 4A shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of concave portions 31a having a predetermined depth are formed. FIG. 4B shows a part of the surface 31m of the diffuse reflector 31 in which a plurality of pyramidal concave portions 31b are formed. FIG. 4C shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of truncated pyramid-shaped concave portions 31c are formed. FIG. 4D shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of conical concave portions 31d are formed. FIG. 4 (e) shows a part of the surface 31m of the diffuse reflector 31 in which a plurality of truncated conical concave portions 31e are formed. Similarly, FIG. 5A shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of convex portions 31f having a predetermined height are formed. FIG. 5B shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of pyramidal convex portions 31g are formed. FIG. 5C shows a part of the surface 31m of the diffuse reflector 31 in which a plurality of truncated pyramid-shaped convex portions 31h are formed. FIG. 5D shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of conical convex portions 31i are formed. FIG. 5E shows a part of the surface 31m of the diffuse reflector 31 on which a plurality of frustoconical convex portions 31j are formed.

  The illuminating device 1 corresponds to a part of the ceiling shown in FIG. 1 and is attached to the ceiling surface or wall surface and holds the diffuse reflection part 31, and an external facility (not shown). A housing portion 50 is provided that corresponds to a portion that is attached to the ceiling surface and is suspended from the ceiling surface. Hereinafter, the structure of the attachment holding | maintenance part 40 and the housing | casing part 50 is demonstrated in order.

  As shown in FIGS. 2 and 3, the attachment holding part 40 corresponds to a part that is mostly provided inside the ceiling, and is attached to the ceiling surface or wall surface to hold the diffuse reflection part 31. Such an attachment holding part 40 includes a power receiving member 41, a support member 42, a thumbscrew 43, an attachment fixing member 44, and a flat head screw 45. Hereinafter, the structure of the attachment holding | maintenance part 40 is demonstrated.

  The power receiving member 41 of the attachment holding part 40 is made of an insulating member and has a rectangular shape. Such a power receiving member 41 supplies AC 100V power supplied from the outside to the power receiving terminal 41a to the base 57 of the casing unit 50 through the power distribution terminal 41b. Moreover, the support member 42 of the attachment holding | maintenance part 40 consists of stainless steel, and is formed combining the L-shaped shape. The power receiving member 41 is inserted into and fixed to the hole formed in the central portion 42 a of the support member 42. Here, the support member 42 is disposed behind the ceiling. That is, the support member 42 has holes 42e formed in the contact portions 42f provided by being bent in an L shape from the support portions 42b and 42c provided at both ends of the central portion 42a of the support member 42, respectively. And screwed with screws (not shown) from the inside of the ceiling plate.

  Further, the wing screw 43 of the attachment holding part 40 is penetrated through a long hole 44a formed in a vertical direction with respect to an attachment fixing member 44 described later. Moreover, the attachment fixing member 44 of the attachment holding | maintenance part 40 is comprised from a pair, consists of stainless steel, and is formed in the L-shape. The long screw 44a formed in the mounting and fixing member 44 is penetrated by the thumbscrew 43 and connected to the support member 42. Further, the contact portions 44 b provided at both ends of the mounting and fixing member 44 are in contact with the back surface 31 r of the diffuse reflector 31 of the diffuse reflector 30. Here, a countersunk screw 45 is screwed into a screw hole 31 s formed in the back surface 31 r of the diffuse reflector 31 through a hole formed in the contact portion 44 b of the mounting fixing member 44. Here, when attaching the illuminating device 1 to the ceiling, the height of the diffuse reflector 30 can be easily adjusted by loosening the thumbscrew 43 and raising and lowering the attachment fixing member 44. Accordingly, the lighting device 1 can be easily attached to the ceiling surface.

  As shown in FIGS. 2 and 3, the housing 50 is suspended from the ceiling surface, and includes a main power supply housing case 51, a sub power supply housing case 52, a housing 53, a holding member 54, a pan screw 55, an insulating case 56, And a base 57. Hereinafter, the structure of the housing | casing part 50 is demonstrated.

  The main power supply accommodation case 51 and the sub power supply accommodation case 52 of the housing unit 50 are formed separately into two so as to form a cylindrical shape having a space inside when joined. The main power supply housing case 51 is made of plastics and is formed by combining a cylindrical shape and a semicylindrical shape. Similarly, the sub power supply accommodation case 52 is formed in a semi-cylindrical shape. Here, as shown in FIG. 2 and FIG. 3, the power supply substrate 61 of the power supply unit 60 is disposed in the internal space provided between the inner wall 51 a of the main power supply housing case 51 and the inner wall of the sub power supply housing case 52. Be contained. Further, the pair of grooves 51b formed between the inner wall 51a and the outer wall 51f of the main power supply accommodation case 51 and the pair of grooves formed between the inner wall and the outer wall 52f of the sub power supply accommodation case 52 The power supply substrate 61 of the power supply unit 60 is accommodated in the main power supply accommodation case 51 and the sub power supply accommodation case 52 with the end portions 61 a provided on both sides of the power supply substrate 61 being sandwiched and engaged.

  The end portion 51 g of the main power supply accommodation case 51 and the end portion 52 g of the sub power supply accommodation case 52 of the housing unit 50 are disposed on the back side of the light source substrate 12 of the light source unit 10. In addition, a pair of wiring insertion portions 51c each projecting from a part of the end 51g of the main power supply housing case 51 and formed in a semi-cylindrical shape, and a part projecting from a part of the end 52g of the sub power supply housing case 52 are half The pair of wiring insertion portions 52 c formed in a cylindrical shape are cylindrical when engaged with each other, and are inserted into the mounting holes 12 b formed in the light source substrate 12 of the light source unit 10. Here, when the wiring insertion part 51c of the main power supply accommodation case 51 and the wiring insertion part 52c of the sub power supply accommodation case 52 are respectively engaged, a through hole is formed, and the wiring 61c is passed through the through hole. In addition, the main power supply housing case 51 is provided with an engaging portion 51 s formed with a screw thread in a cylindrical portion, and is engaged with a screw groove formed on an inner peripheral surface of a base 57 described later.

  The casing 53 of the casing 50 is made of aluminum and has a hemispherical shape. Here, the main power supply housing case 51 and the sub power supply housing case 52 that house the power supply unit 60 are housed in the housing 53. Further, the driving power generated by the power supply board 61 of the power supply section 60 is supplied to the LEDs 11 mounted on the light source board 12 of the light source section 10 through an attachment hole 12b of the light source board 12 by an electric wire (not shown). Further, the back surface of the light source substrate 12 of the light source unit 10 is brought into contact with the light source substrate contact surface 53 a formed inside the housing 53. Further, in order to efficiently dissipate the heat generated in the power supply unit 60 and the light source unit 10 on the second outer peripheral surface 53e of the casing 53, a plurality of heat radiation fins having a curved uneven shape are formed. The first outer peripheral surface 53b is formed in a cylindrical shape. Such an inner peripheral surface facing the first outer peripheral surface 53b is brought into contact with a side wall 54c of a holding member 54 described later.

  The holding member 54 of the housing 50 is engaged with the light guide plate 21 and the light guide plate 22 and is detachably held on the housing 53. Such a holding member 54 is made of a heat-resistant resin and is formed in a semi-disc shape. Further, the pair of holding members 54 are engaged by inserting a groove portion 54 a opened in the center of the holding member 54 into an engaging portion 22 h provided in the light guide piece 22 a of the light guide plate 22. Further, the pair of holding members 54 are provided with protrusions 54b formed at both ends of the holding member 54, and concave engaging portions provided respectively under the light guide piece 21a and the light guide piece 21d of the light guide plate 21. 21h is inserted and engaged.

  The pan head screw 55 of the housing unit 50 is opened to the holes 54d of the pair of holding members 54 and the light source substrate 12 in a state where the light guide plate 22 is inserted into the light guide plate 21 and the pair of holding members 54 are respectively engaged. The threaded holes 12a are passed through in this order. Then, the pan-head screw 55 is screwed into a screw hole 53 d provided in the light source substrate contact surface 53 a of the housing 53, so that the light guide plate 21, the light guide plate 22, and the light source substrate 12 are attached to the housing 53. Removably hold each. The pan-head screw 55 may be sealed with respect to the hole 54d of the holding member 54 using an adhesive containing a reflective agent.

  The insulating case 56 of the housing 50 is made of an insulating plastic and is formed in a ring shape. Here, the insulating case 56 is sandwiched between the main power supply housing case 51 and the base 57 by engaging the engaging portion 51 s of the main power supply storage case 51 and the thread groove formed on the inner peripheral surface of the base 57. Fixed. The base 57 of the housing unit 50 is supplied with electric power. The diameter of the base 57 is a general size of 26 mm. Moreover, it is good also as a structure using the terminal which receives a power supply by connecting a generator or a storage battery instead of the nozzle | cap | die 57 and plugging in an outlet and receiving a power supply.

  As shown in FIG. 2, the power supply unit 60 of the lighting device 1 is provided with a power supply board 61 that is electrically connected to the light source unit 10, converts external power into predetermined drive power, and supplies the drive power to the light source unit 10. ing.

  Such a power supply unit 60 includes a power supply board 61 and a power supply component 62 as shown in FIGS. Hereinafter, the configuration of the power supply unit 60 will be described. The power supply board 61 of the power supply unit 60 matches the power input from the outside through the base 57 of the housing unit 50 with the rating of the LED 11 of the light source unit 10, and the voltage of the power transmitted from the outside is predetermined from 100V. The driving power is supplied to the LED 11 of the light source unit 10. The power supply unit 60 is housed in the main power supply housing case 51 and the sub power supply housing case 52 of the housing unit 50. Further, the end 61 a of the power supply substrate 61 is urged and fixed by a minute projection (not shown) formed in the groove 62 b of the sub power supply accommodation case 52. The wiring 61b is connected to the base 57 of the housing unit 50. Similarly, the wiring 61c is connected to the light source substrate 12 of the light source unit 10 described above.

  Next, the optical characteristics of the illumination device 1 will be specifically described with reference to FIGS.

  A part of the light of the LED 11 incident from the incident surface 21f of the light guide plate 21 shown in FIG. 3 has three notches 21k to 21k formed between the light guide pieces 21a to 21d branched into four parts. Each of the cutouts 21n can be reflected at a wide angle. Here, a part of the light reflected at a wide angle by the notch 21k to the notch 21n includes one main surface provided on each of the light guide pieces 21a to 21d and the other main surface facing the one main surface. The light is emitted from the one main surface or the other main surface in the process of multiple reflection between the two. That is, the light of the LED 11 incident from the incident surface 21f of the light guide plate 21 can be emitted from the side surface orthogonal to the incident surface 21f in addition to the tip 21s and the tip 21t formed to face the incident surface 21f. it can. Further, in the light guide pieces 21a to 21d, four side surfaces orthogonal to the incident surface 21f are formed. Therefore, light is emitted at a wide angle from the four surfaces of the light guide pieces 21a to 21d.

  Also, among the four side surfaces orthogonal to the incident surface 21f of the light guide plate 21 shown in FIG. 3, light reflected by one side surface is incident on the side surface facing the one side surface, and a part of the incident light is The light is emitted from the opposite side surfaces. Similarly, of the four side surfaces orthogonal to the incident surface 21f, the light reflected by one side surface is incident on the side surface adjacent to the one side surface, and a part of the incident light is emitted from the adjacent side surface. Is done. Further, the light incident on the light guide plate 21 is reflected in all directions between the surfaces of the light guide plate 21 to be incident on the tip 21s or the tip 21t at an oblique incidence, and then a part of the light is incident on the tip 21s or The light is not emitted from the tip 21t but reflected to the incident surface 21f side. Therefore, in the light guide plate 21, the ratio of the light that travels straight and is emitted from the tip 21s or the tip 21t in the light of the LED 11 incident from the incident surface 21f of the light guide plate 21 can be significantly reduced. On the other hand, concave portions 21p are formed in a matrix on two opposite side surfaces of the four side surfaces, and diffused light generated by the plurality of concave portions 21p is emitted from the four side surfaces, thereby being incident from the incident surface 21f. The ratio of the light emitted from the four side surfaces orthogonal to the incident surface 21f can be greatly increased. That is, the light guide plate 21 emits light that has a very large light distribution angle and is sufficiently diffused and gentle to the eyes. Further, various concave portions formed on the surface 31m of the diffuse reflector 31 shown in FIGS. 4A to 4E and the surface 31m of the diffuse reflector 31 shown in FIGS. 5A to 5E. Diffused light having various light distributions can be generated by the various convex portions.

  Furthermore, the light L11 emitted from the light guide piece 21a of the light guide plate 21 shown in FIG. 6A is incident on the concave portion 31n formed on the surface 31m of the diffuse reflector 31 of the diffuse reflector 30, and diffused light. L20 is generated. Similarly, the light L12 emitted from the light guide piece 21b of the light guide plate 21, the light L13 emitted from the light guide plate 22, the light L14 emitted from the light guide piece 21d of the light guide plate 21, and the light guide piece of the light guide plate 21 The light L15 emitted from the light source 21c and the light L16 emitted from the light guide plate 22 are incident on the concave portion 31n formed on the surface 31m of the diffuse reflector 31 of the diffuse reflector 30 to generate diffused light L20. On the other hand, the light L31 emitted from the light guide piece 21a of the light guide plate 21 shown in FIG. 6B is incident on the concave portion 31n formed on the surface 31m of the diffuse reflector 31 of the diffuse reflector 30, and diffused light. L40 is generated. Similarly, the light L32 emitted from the light guide piece 21c of the light guide plate 21 is incident on the concave portion 31n formed on the surface 31m of the diffuse reflector 31 of the diffuse reflector 30, and generates diffused light L40. Further, a part of the diffused light L40 is reflected by the outer frame plate 32.

  As mentioned above, according to the illuminating device 1 of 1st Embodiment, the light radiate | emitted from the light emission part 20 can be further converted into diffused light, and can be reflected.

  Moreover, according to the illuminating device 1 of 1st Embodiment, since the diffuse reflection board 31 has penetrated the light emission part 20 or the light source part 10, the light radiate | emitted from the light emission part 20 is made into this light emission part 20. The light can be incident on the diffuse reflection plate 31 provided in the vicinity, and the light propagation efficiency is improved. Moreover, according to the illuminating device 1 of 1st Embodiment, the light radiate | emitted from the light-guide plates 21 and 22 injects into the diffuse reflection board 31 by providing the curved diffuse reflection board 31, and predetermined | prescribed predetermined | prescribed It can be reflected radially at a range of angles. Furthermore, according to the illuminating device 1 of 1st Embodiment, since the surface of the diffuse reflection board 31 is formed in mirror shape, the light radiate | emitted from the light-guide plates 21 and 22 and entered into the diffuse reflection board 31 is used. It can be reflected with high reflectivity.

  Furthermore, according to the illumination device 1 of the first embodiment, the surface 31m of the diffusive reflector 31 is a spot-like or linear concave part, a spot-like or linear convex part, or a combination thereof. By forming a plurality of light beams, the light emitted from the light guide plates 21 and 22 enters the diffuse reflection plate 31 and can be converted into diffuse light having various light intensity distributions. Similarly, according to the illuminating device 1 of 1st Embodiment, the concave part and convex part which consist of the dotted | punctate shape of the diffuse reflector 31 are pyramid shape, pyramid shape, cone shape, truncated cone shape, or these. By forming in a combined shape, the light emitted from the light guide plates 21 and 22 enters the diffuse reflector 31 and can be converted into diffused light having various light distributions.

  Here, according to the illuminating device 1 of 1st Embodiment, by forming the recessed part or convex part which guide | induces the light which injected from the light source as diffused light in the main surface of the light-guide plates 21 and 22 in a matrix form. The plurality of diffused light generated in the concave portions or convex portions formed in the light guide plates 21 and 22 are derived from one side surface and the other side surface of the light guide plates 21 and 22 as a substantially uniform surface light source. Here, the diffused light generated in the concave portions or convex portions formed on the light guide plates 21 and 22 does not feel dazzling to the viewer, and can be visually recognized as gentle light close to the viewer.

[Second Embodiment]
Hereinafter, the lighting device 2 according to the second embodiment of the present invention will be specifically described with reference to FIGS. 7 and 8.

  As shown in FIG. 7, the illuminating device 2 according to the second embodiment of the present invention is provided with diffuse reflection pieces 71 to 73 that diffusely reflect light from the front end surfaces of the light guide plates 21 and 22. Part 70 has a feature. Other configurations according to the second embodiment are the same as the configurations described in the first embodiment. Therefore, in the second embodiment, the configuration of the diffuse reflection part 70 different from that of the first embodiment and the attachment holding part 80 that holds the diffuse reflection part 70 will be mainly described.

  As shown in FIG. 7, the diffuse reflection unit 70 of the illumination device 2 is arranged directly below the light guide plates 21 and 22 and on the same straight line as the central axis of the tip surfaces 21 s, 21 t, 22 s, and 22 t of the light guide piece. Diffuse reflection pieces 71 to 73 are provided, which diffusely reflect light from the tip surfaces 21s, 21t, 22s, and 22t. Here, when the diffuse reflection pieces 71 to 73 are swung by air conditioning or the like, the light emitted from the tip surfaces 21s, 21t, 22s and 22t of the light guide piece is reflected by the diffuse reflection pieces 71 to 73. be able to. Further, the light emitted from the front end surfaces 21 s, 21 t, 22 s and 22 t of the light guide piece is transmitted between the diffuse reflection piece 71 and the diffuse reflection piece 72 and between the diffuse reflection piece 72 and the diffuse reflection piece 73. Each can be subjected to multiple reflection.

  Such diffuse reflection pieces 71 to 73 are made of the same material as the light guide plates 21 and 22 of the light emitting unit 20 described above. Each of the diffuse reflection pieces 71 to 73 has a substantially identical shape and is formed in a prismatic shape, and one surface 71a to 73a corresponding to the upper portion and the other surface 71b to 73b corresponding to the lower portion are notched. It has become. Accordingly, the side surfaces 71c to 73c provided between the one surfaces 71a to 73a and the other surfaces 71b to 73b of the diffuse reflection pieces 71 to 73 are formed in a trapezoidal shape. Here, in the upper part of the diffuse reflection piece 71, a hole 71 </ b> V for allowing a later-described suspension member 87 to be inserted is opened. In addition, a hole 71 </ b> W for allowing a suspension member 88 to be described later to pass through is opened at the lower end of the diffuse reflection piece 71. Similarly, holes 72 </ b> W through which the suspension member 88 is inserted are opened at the upper end and the lower end of the diffuse reflection piece 72. Similarly, a hole 73 </ b> W through which the suspension member 88 is inserted is opened at the upper end of the diffuse reflection piece 73. Further, on the side surfaces 71c to 73c of the diffuse reflection pieces 71 to 73, as shown in FIG. 8, concave portions 71p to 73p for reflecting the light of the LED 11 as diffused light are respectively formed in a matrix.

  The illuminating device 2 is provided with the housing 50 described above in the illuminating device 1 according to the first embodiment and the attachment holding portion 80 unique to the illuminating device 2 according to the second embodiment. Note that a part of the configuration of the attachment holding unit 80 is the same as the configuration of the attachment holding unit 40 described above in the first embodiment. Here, the attachment holding part 80 is attached to a ceiling surface, and hold | maintains the diffuse reflection pieces 71 thru | or 73 so that rocking | fluctuation is possible. As shown in FIG. 8, such an attachment holding portion 80 includes a power receiving member 81, a support member 82, a butterfly screw 83, an attachment fixing member 84, a flat head screw 85, a suspension holding member 86, and suspension members 87 and 88. It is configured. Hereinafter, the structure of the attachment holding | maintenance part 80 is demonstrated in order.

  As shown in FIG. 8, the power receiving member 81 of the attachment holding portion 80 has the same configuration as the power receiving member 41 of the attachment holding portion 40 described above. Further, the support member 82 of the attachment holding part 80 has the same configuration as the support member 42 of the attachment holding part 40 described above except for a part of the shape. That is, the support member 82 has substantially the same configuration as the support member 42 except that the upper portion 82a is smaller than the central portion 42a of the support member 42 and the interval between the support portions 82b is narrow. This is because the suspension holding member 86 supported by the support member 82 is smaller than the diffuse reflector 31 supported by the support member 42 described above. The wing screw 83 of the attachment holding portion 80 is an article similar to the wing screw 43 described above, and is penetrated through an elongated hole 84a formed in a vertical direction in an attachment fixing member 84 described later. Moreover, the attachment fixing member 84 of the attachment holding | maintenance part 80 is comprised from a pair, consists of stainless steel, and is formed in flat form. A wing screw 83 is penetrated through a long hole 84a formed vertically in the center of the mounting fixing member 84, and is connected to the support member 82 via a nut. Further, a countersunk screw 85 is inserted into a hole formed in the lower portion of the attachment fixing member 84, and screwed into a screw hole 86b formed in an outer wall surface 86a of a suspension holding member 86 described later. Here, when attaching the lighting device 2 to the ceiling, the height of the suspension holding member 86 can be easily adjusted by lifting the suspension holding member 86 after loosening the thumbscrew 83.

  The suspension holding member 86 of the attachment holding portion 80 is made of an aluminum alloy, is formed in a quadrangular prism shape having a space therein, and houses the above-described case 53 of the case portion 50 and the like. Here, screw holes 86b are respectively formed in two opposing surfaces of the outer wall surface 86a of the suspension holding member 86, and a set of mounting and fixing members 84 are opposed to each other via a plurality of countersunk screws 85. Yes. In addition, circular insertion holes 86d are opened in the protrusions 86e formed at the four corners of the inner wall surface 86d of the suspension holding member 86, respectively. A distal end 87a of a suspension member 87 to be described later is inserted into the insertion hole 86d. In such a state, set screws (not shown) are respectively inserted into a plurality of screw grooves (not shown) formed from the outer wall surface 86a to the inner wall surface 86d of the suspension holding member 86, and are suspended by the set screws. The tip 87a of the lower member 87 is pressed and fixed. Further, the suspension member 87 of the attachment holding portion 80 is made of an elongated cylindrical stainless steel, and is refracted from both sides in a state of being inserted into a hole 71V formed in the upper part of the diffuse reflection piece 71. Is formed. The suspension member 88 of the attachment holding portion 80 is made of thin cylindrical stainless steel, and is inserted into a hole 71 </ b> W formed at the lower end of the diffuse reflection piece 71 and a hole 72 </ b> W formed at the upper end of the diffuse reflection piece 72. In this state, it is refracted and formed into a rectangular shape. Similarly, the suspension member 88 is refracted and formed in a rectangular shape while being inserted into the hole 72W formed at the lower end of the diffuse reflection piece 72 and the hole 73W formed at the upper end of the diffuse reflection piece 73. ing.

  As mentioned above, according to the illuminating device 2 of 2nd Embodiment, the light radiate | emitted from the light emission part 20 can be further converted into diffused light and reflected similarly to the illuminating device 1 of 1st Embodiment. .

  In particular, according to the illuminating device 2 of the second embodiment, the light emitted from the front end surfaces of the light guide plates 21 and 22 is disposed apart from the front end surface facing the incident surfaces of the light guide plates 21 and 22. Is diffused and reflected by the diffuse reflection part 70 provided with the diffuse reflection pieces 71 to 73 that enter the light from one surface 71a to 73a and emit the light from the other surfaces 71b to 73b. Can do. Furthermore, according to the illumination device 2 of the second embodiment, the center of the one surface 71a of the diffuse reflection piece 71 and the centers of the front end surfaces of the light guide plates 21 and 22 are arranged in a straight line. And 22, the light from the light source can be easily reflected from the diffuse reflection piece 71. Moreover, according to the illuminating device 2 of 2nd Embodiment, since the one surface 71a of the diffuse reflection piece 71 is formed inclining with respect to the horizontal surface, it is from the front end surface of the light-guide plates 21 and 22 to the diffuse reflection piece 71. On the other hand, a part of the light propagating can be reflected toward the circumference of the illumination device 2. Therefore, it can illuminate toward the horizontal direction of the illuminating device 2 with the reflected light.

  Furthermore, according to the illuminating device 2 of the second embodiment, when the diffuse reflection pieces 71 to 73 are swung in a state of being linearly separated from the optical axis of the light source, the diffuse reflection piece 71 and the diffuse reflection piece 72 are used. In the space between the diffuse reflection piece 72 and the diffuse reflection piece 73, a part of the propagating light can be subjected to multiple reflection to uniformly illuminate the surroundings. Further, according to the lighting device 2 of the second embodiment, the one surfaces 71a to 73a of the diffuse reflection pieces 71 to 73 are formed to be inclined with respect to the other surfaces 71b to 73b of the adjacent diffuse reflection pieces 71 to 73. Therefore, a part of the light propagating from the diffuse reflecting piece 71 to the diffuse reflecting piece 72 and a part of the light propagating from the diffuse reflecting piece 72 to the diffuse reflecting piece 73 are transferred to the lighting device 2. It can be reflected toward the circumference. Therefore, it can illuminate toward the horizontal direction of the illuminating device 2 with the reflected light. Moreover, according to the illuminating device 2 of 2nd Embodiment, the recessed part or convex part which reflects the light which injected from the light source as diffused light is formed in the main surface of the diffuse reflection pieces 71 thru | or 73 in the matrix form. Therefore, a plurality of diffused lights reflected by the concave portions or convex portions formed in the diffuse reflection pieces 71 to 73 are derived as substantially uniform surface light sources. Here, the diffused light generated in the concave portions or the convex portions formed in the diffuse reflection pieces 71 to 73 does not feel dazzling to the viewer and can be visually recognized as gentle light close to the viewer. .

  Next, the manufacturing method of the light guide plates 21 and 22 of the light emitting unit 20 and the diffuse reflection pieces 71 to 73 of the diffuse reflection unit 70 provided in the lighting device 2 provided in the lighting device 1 according to the present invention is specifically described. To explain

  Ultrasonic processing, heating processing, cutting processing, laser processing, molding processing, and silk printing processing can be used for the manufacturing methods of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73. Accordingly, by selecting each processing method according to the specifications, costs, required quantities, etc. of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73, the concave or convex portions are made to be concave or convex. To 73 can be formed with high precision and stability. Hereinafter, a method for manufacturing the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 will be described in detail. In the ultrasonic processing, the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 72 are used by using the ultrasonic vibration of the ultrasonic processing horn brought into contact with the surfaces of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73. By partially melting each surface of 73, a recess is formed on each surface. Further, in the heat processing, each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 is made by using heat of a processing tool brought into contact with each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73. By partially melting, concave portions are formed on the respective surfaces. Similarly, in the cutting process, the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 are rotated by using a cutting tool that is rotated or biased while contacting the respective surfaces of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73. By partially scraping each surface, a recess is formed on each surface. Similarly, in the laser processing, each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 is heated using the heat of the laser light condensed on each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73. Are partially melted to form recesses on the respective surfaces. Similarly, in the molding process, a shape reflecting the outer shapes of the light guide plates 21 and 22 to be molded and the diffuse reflection pieces 71 to 73 is formed inside the mold, and the mold mounted on the injection molding machine is heated. Then, after injecting the softened resin, the resin is cooled to form concave portions, convex portions, or concave portions and convex portions on each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73.

  In the silk printing process, a plate having predetermined holes is brought into contact with each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73, and a curable resin is attached to each surface through the holes. Then, each surface is partially covered with a resin to form a convex portion on each surface. Moreover, you may add the fine particle-shaped diffusion member which emits diffused light to the light guide plates 21 and 22 used for a shaping | molding process or a silk printing process, and the resin which is a base material of the diffuse reflection pieces 71-73. Similarly, a particulate diffusion member that emits diffused light is applied to the light guide plates 21 and 22 that perform the above-described ultrasonic processing, heating processing, cutting processing, or laser processing and the resin that is the base material of the diffuse reflection pieces 71 to 73. You may use what was added. The light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 may be formed by combining the ultrasonic processing, heating processing, cutting processing, laser processing, molding processing, and silk printing processing described above. That is, only the outer shapes of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 are formed by molding, and then concave portions are formed on each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 by ultrasonic processing. You may do it. Similarly, only the outer shapes of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 are formed by molding, and then convex portions are formed on each surface of the light guide plates 21 and 22 and the diffuse reflection pieces 71 to 73 by silk printing. May be formed.

  Finally, the configuration and main effects of the lighting devices 1 and 2 according to the present invention will be specifically described for each claim.

  The illuminating devices 1 and 2 according to claim 1 include a light source unit 10 provided with a light source (LED 11) that emits light by electric power supplied from a power source unit, and a downward direction from a ceiling surface of the facility or from a wall surface of the facility. The light emitting unit 20 is provided so as to protrude sideways, diffuses the light incident from the light source unit 10 and illuminates the surroundings, and the light emitted from the light emitting unit 20 is disposed above or to the side of the light emitting unit 20. It is characterized by having a diffuse reflection part 30 provided with a diffuse reflection plate 31 for reflection, and an attachment holding part 40 attached to the ceiling surface or wall surface and holding the diffuse reflection part 31.

  According to the illuminating devices 1 and 2 according to the first aspect, the light emitted from the light emitting unit 20 can be further converted into diffused light and reflected.

  The illuminating devices 1 and 2 according to claim 2 are dependent on claim 1, and the diffuse reflector 31 is characterized in that a through hole through which the light emitting unit 20 or the light source unit 10 is inserted is formed in the center. .

  According to the illumination devices 1 and 2 described in claim 2, the light emitted from the light emitting unit 20 is incident on the diffuse reflector 31 provided very close to the top of the light emitting unit 20. be able to. Therefore, the light propagation efficiency is improved.

  The lighting devices 1 and 2 according to a third aspect are dependent on the first aspect, and the diffusive reflector 31 is formed with a curved surface that reflects the light derived from the light emitting unit 20.

  According to the illumination devices 1 and 2 described in the third aspect, the light emitted from the light guide plates 21 and 22 and incident on the diffuse reflector 31 can be reflected radially at a predetermined range of angles.

  The lighting devices 1 and 2 according to a fourth aspect are dependent on the first aspect, and the surface of the diffuse reflector 31 is formed in a mirror shape.

  According to the illumination devices 1 and 2 described in the fourth aspect, light emitted from the light guide plates 21 and 22 and incident on the diffuse reflection plate 31 can be reflected with high reflectivity.

  The lighting devices 1 and 2 according to a fifth aspect are dependent on the first aspect, and the diffusive reflector 31 has a concave portion having a dotted or linear shape on its surface, a convex portion having a dotted or linear shape, or It is characterized in that a plurality of combinations thereof are formed.

  According to the illumination devices 1 and 2 described in claim 5, the light emitted from the light guide plates 21 and 22 and incident on the diffuse reflector 31 can be converted into diffused light having various light intensity distributions. it can.

  The illumination devices 1 and 2 according to a sixth aspect are dependent on the fifth aspect, and the concave and convex portions made of dots of the diffuse reflector 31 have a pyramid shape, a truncated pyramid shape, a conical shape, and a truncated cone shape. Or a combination of them.

  According to such illumination devices 1 and 2 according to claim 6, the light emitted from the light guide plates 21 and 22 and incident on the diffuse reflector 31 can be converted into diffused light having various light distributions. it can.

  The lighting devices 1 and 2 according to a seventh aspect are dependent on the first aspect, and the light guide plates 21 and 22 have a matrix of concave portions or convex portions that guide light incident on the main surface from the light source as diffused light. It is characterized by being formed.

  According to the illuminating device 2 described in claim 7, a plurality of diffused light generated in the concave portions or the convex portions formed in the light guide plates 21 and 22 is used as a substantially uniform surface light source. Derived from one side and the other side. Here, the diffused light generated in the concave portions or convex portions formed on the light guide plates 21 and 22 does not feel dazzling to the viewer, and can be visually recognized as gentle light close to the viewer.

  The lighting device 2 according to an eighth aspect is dependent on the first aspect, and is directed downward from the light source unit 10 provided with the light source (LED 11) that emits light by the power supplied from the power source unit, and the ceiling surface of the facility. A light emitting unit 20 provided with light guide plates 21 and 22 that project and are provided from the front end surface of the light guide piece branched from the light incident surface so as to be opposed to the light incident surface. The diffuse reflection is provided immediately below the light guide plates 21 and 22 and on the same straight line as the central axis of the tip surface of the light guide piece, and provided with diffuse reflection pieces 71 to 73 that diffusely reflect the light from the tip surface. It is characterized by having a portion 70 and an attachment holding portion 80 attached to the ceiling surface and holding the diffuse reflection pieces 71 to 73 in a swingable manner.

  According to such an illuminating device 2 according to claim 8, as compared with the illuminating device 1, the diffusing reflection pieces 71 to 73 that swing are used, and light emitted from the front end surfaces of the light guide plates 21 and 22 is used. It can be diffusely reflected.

  The lighting device 2 according to a ninth aspect is dependent on the eighth aspect, and the one surface 71a of the diffuse reflection piece 71 is formed to be inclined with respect to a horizontal plane.

  According to such an illuminating device 2 of the ninth aspect, the light from the light source can be easily reflected from the light guide plates 21 and 22 to the diffuse reflection piece 71.

  The illumination device 2 according to a tenth aspect is dependent on the eighth aspect, and the diffusive reflecting pieces 71 to 73 include a plurality of swayable reflectors spaced apart on the same straight line as the central axis of the front end surfaces of the light guide plates 21 and 22. It is characterized by being arranged.

  According to the illuminating device 2 according to claim 10, when the diffuse reflection pieces 71 to 73 swing in a state of being separated on the same straight line as the central axis of the tip surfaces of the light guide plates 21 and 22, In the space between the diffuse reflection piece 71 and the diffuse reflection piece 72 and between the diffuse reflection piece 72 and the diffuse reflection piece 73, a part of the propagating light can be reflected multiple times to uniformly illuminate the surroundings.

  The illumination device 2 according to an eleventh aspect is dependent on the eighth aspect, and the one surfaces 71a to 73a of the diffuse reflection pieces 71 to 73 are inclined with respect to the other surfaces 71b to 73b of the adjacent diffuse reflection pieces 71 to 73. It is characterized by being formed.

  According to such an illuminating device 2 of the eleventh aspect, a part of light propagating from the diffuse reflection piece 71 to the diffuse reflection piece 72 and from the diffuse reflection piece 72 to the diffuse reflection piece 73 are propagated. A part of the light to be reflected can be reflected toward the circumference of the illumination device 2. Therefore, it can illuminate toward the horizontal direction of the illuminating device 2 with the reflected light.

  The illumination device 2 according to a twelfth aspect is dependent on the eighth aspect, and the diffuse reflection pieces 71 to 73 have a matrix in which concave portions or convex portions that guide light incident from the light source (LED 11) to the main surface as diffused light are matrixed. It is characterized by being formed in a shape.

  According to the illuminating device 2 of the twelfth aspect, a plurality of diffused lights reflected by the concave portions or the convex portions formed in the diffuse reflecting pieces 71 to 73 are used as substantially uniform surface light sources, and the diffuse reflecting pieces 71. To 73. Here, the diffused light generated in the concave portions or the convex portions formed in the diffuse reflection pieces 71 to 73 does not feel dazzling to the viewer and can be visually recognized as gentle light close to the viewer. .

  The lighting device 2 according to a thirteenth aspect is dependent on the eighth aspect and includes suspension members 87 and 88 for suspending the diffuse reflection pieces 71 to 73, and the suspension members 87 and 88 include the diffusion reflection pieces 71 to 88. It is characterized by being inserted into a through hole formed in 73.

  According to the illuminating device 2 described in the thirteenth aspect, it is possible to suspend the diffuse reflection pieces 71 to 73 using the suspending members 87 and 88 having a simple configuration. Furthermore, scattered light can be generated by the light incident on the suspension members 87 and 88.

  The lighting device 2 according to a fourteenth aspect is dependent on the thirteenth aspect, and the suspension members 87 and 88 are provided so as to extend along the light guide plates 21 and 22.

  According to the illuminating device 2 described in claim 14, since the suspension members 87 and 88 are close to the light guide plates 21 and 22, the suspension members 87 and 88 are disposed inconspicuously. be able to.

DESCRIPTION OF SYMBOLS 1, 2 Illumination device, 10 Light source part, 11 LED, 12 Light source board, 12a Screw hole, 12b Mounting hole, 20 Light emission part, 21, 22 Light guide plate, 21a, 21b, 21c, 21d, 22a, 22b, 22c, 22d Light guide piece, 21f, 22f incident surface, 21h, 22h engaging portion, 21k, 21m, 21n, 22k, 22m, 22n notched portion, 21p, 22p concave portion, 21s, 21t, 22s, 22t tip surface, 22j joint portion, 30 Diffuse reflection part, 31 Diffuse reflection plate, 31a, 31b, 31c, 31d, 31e Concave part, 31f, 31g, 31h, 31i, 31j Convex part, 31k Protrusion, 31m Surface, 31n Concave part, 31p Peripheral part, 31r Back surface, 31s screw hole, 32 outer frame plate, 32p outer peripheral part, 40 mounting holding part, 41 power receiving member, 41a power receiving terminal, 1b Power distribution terminal, 42 Support member, 42a Center part, 42b, 42c Support part, 42e Contact part, 42f Hole, 43 Wing screw, 44 Mounting fixing member, 44a Long hole, 44b Contact part, 45 Countersunk screw, 50 housing Body part, 51 Main power supply accommodation case, 52 Sub power supply accommodation case, 51a Inner wall, 51b Groove, 51c, 52c Wiring insertion part, 51f, 52f Outer wall, 51g, 52g End part, 51s Engagement part, 53 Housing, 53a Light source Substrate contact surface, 53b first outer peripheral surface, 53d screw hole, 53e second outer peripheral surface, 54 holding member, 54a groove, 54b protrusion, 54c side wall, 54d hole, 55 pan head screw, 56 insulating case, 57 base, 60 power supply part, 61 power supply board, 61a end, 61b, 61c wiring, 62 power supply component, 62b groove, 70 diffuse reflection part, 71, 72, 73 diffuse reflection piece, 71a, 72a, 73a one surface, 71b, 72b, 73b other surface, 71c, 72c, 73c side surface, 71p, 72p recess, 71V, 71W, 72W, 73W hole, 80 housing portion, 81 power receiving member, 82 support member, 82a upper part, 82b support part, 83 butterfly screw, 84 mounting fixing member, 84a long hole, 85 countersunk screw, 86 suspension holding member, 86a outer wall surface, 86b screw hole, 86d inner wall surface, 86d insertion hole 86e Projection, 87,88 Suspension member, 87a Tip, L11, L12, L13, L14, L15, L16, L31, L32 Light, L20, L40 Diffused light.

Claims (14)

A light source unit provided with a light source that emits light by power supplied from the power source unit;
A light emitting part that is provided to project downward from the ceiling surface of the facility or project sideways from the wall surface of the facility, and illuminates the surroundings by diffusing light incident from the light source unit;
A diffusive reflecting part provided on the upper side or the side of the light emitting part and provided with a diffusive reflecting plate for reflecting light derived from the light emitting part;
An illumination device comprising: an attachment holding portion that is attached to the ceiling surface or the wall surface and holds the diffuse reflection portion. The illuminating device according to claim 1, wherein the diffuse reflector has a through hole formed at a center thereof through which the light emitting unit or the light source unit is inserted. The lighting device according to claim 1, wherein the diffuse reflector has a curved surface that reflects light derived from the light emitting unit. The illuminating device according to claim 1, wherein the diffuse reflector has a mirror-like surface that reflects light derived from the light emitting unit. The diffusive reflector is formed with a plurality of concave portions made of dots or lines, convex portions made of dots or lines, or a combination thereof, on the surface. The lighting device described. 6. The concave portion and the convex portion, each having a dot shape of the diffuse reflector, are formed in a pyramid shape, a truncated pyramid shape, a cone shape, a truncated cone shape, or a combination thereof. The lighting device described. The light emitting unit is provided with a plate-shaped light guide plate,
The lighting device according to claim 1, wherein the light guide plate is formed with a plurality of depressions, protrusions, or combinations thereof that diffuse light incident from the light source unit. A light source unit provided with a light source that emits light by power supplied from the power source unit;
Protruding downward from the ceiling of the facility,
A light emitting unit provided with a light guide plate that illuminates the surroundings by deriving light from the light source unit that is incident from the incident surface, from the front end surface of the light guide piece that branches and faces the incident surface;
A diffuse reflection section provided directly below the light guide plate, on the same straight line as the central axis of the tip surface of the light guide piece, and provided with a diffuse reflection piece for diffusing and reflecting light from the tip surface;
An illuminating device comprising: an attachment holding portion that is attached to the ceiling surface and holds the diffuse reflection piece in a swingable manner. The lighting device according to claim 8, wherein one surface of the diffuse reflection piece is inclined with respect to a horizontal plane. The illuminating device according to claim 8, wherein a plurality of the diffuse reflection pieces are disposed so as to be swingable apart from each other on the same straight line as a central axis of the tip surface of the light guide plate. The lighting device according to claim 8, wherein the one surface of the diffuse reflection piece is inclined with respect to the other surface of the adjacent diffuse reflection piece. The illuminating device according to claim 8, wherein the diffuse reflection piece has a light guide part that guides light incident from the light source as diffused light on a main surface thereof in a matrix shape. The attachment holding part is provided with a suspension member for suspending the diffuse reflection piece,
The lighting device according to claim 8, wherein the suspension member is inserted through a through hole formed in the diffuse reflection piece. The lighting device according to claim 13, wherein the suspension member extends along the light guide plate.