TW201633555A - Light distributor and light fixture - Google Patents

Abstract

A light distributor and a light fixture are provided, which can externally diffuse light from the light fixture in an efficient manner, and can reduce the profile thereof. A light distributor 50 is provided with a tabular light-distribution plate 51 which diffuses illumination light, made incident onto an incidence portion 78 from a light source 23, toward an outer peripheral surface thereof, and externally emits the illumination light; and a light-quantity adjusting member 84 positioned on the opposite side of said incidence portion 78 from said light source, wherein a surface of the light-quantity adjusting member on at least the incidence-portion side has a lower transmittance of said illumination light compared to that of said incidence portion.

Description

Light distribution means and lighting fixture

The present invention relates to a light distribution means and a lighting fixture using a semiconductor light emitting element (LED) or the like.

A prior art example of a lighting fixture using a semiconductor light emitting element (LED) is disclosed, for example, in Patent Document 1. The lighting fixture includes: a base member; an LED (semiconductor light-emitting element) fixed to the base member; and a light distribution lens (optical element) fixed to the base member.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2006-114863

In the development of such lighting fixtures, it has become a problem to efficiently diffuse light from a lighting fixture to the outside or to lower the height of components.

Accordingly, the present invention provides a light distribution means and a lighting fixture that can efficiently diffuse light from a lighting fixture to the outside or reduce the height of the component.

The light distribution means of the present invention is a flat light distribution plate that diffuses illumination light that is incident on the incident portion from the light source toward the outer peripheral surface side and is emitted toward the outside, and is characterized in that the light amount is adjusted. The member is located on the opposite side of the light source with the incident portion interposed therebetween, and at least the incident portion side faces the illumination light having a lower transmittance than the incident portion.

The light distribution plate may include a fitting hole, and the incident portion may be formed of a different member from the light distribution plate, and may be fitted to the fitting hole.

In this case, the light amount adjusting member may be made of metal.

The light amount adjusting member may further include a through hole penetrating the light amount adjusting member in a thickness direction of the light distribution plate.

A light amount adjusting plate may be provided on a side opposite to the incident portion of the light amount adjusting member, and the illumination light is diffused and emitted to the side opposite to the incident portion.

A lighting fixture according to the present invention is characterized by comprising: the light distribution means; and the light source.

When viewed from the thickness direction of the light distribution plate, all of the light sources may be located on the inner peripheral side than the outer peripheral portion of the incident portion.

The light source includes a semiconductor light emitting element, a base member having a mounting surface on which the semiconductor light emitting element is mounted, and a resin molded portion that is coupled to the base member and has a light distribution member mounted on an outer peripheral side of the mounting surface. a recess or a through hole for engaging an engaging portion of a light distribution member that distributes light emitted from the semiconductor light emitting element; and the base member may have an engaging portion retreating portion that engages with the aforementioned resin forming portion The aforementioned engagement portion of the light distribution member for the concave portion of the light distribution member or the through hole is retracted.

The engagement portion retracting portion of the base member may be constituted by a cutout portion for retraction.

The aforementioned cutout portion for the base member may have an R shape that opens a part of a peripheral edge of the base member.

The engaging portion retreating portion of the base member may be constituted by a recess for recession.

The engaging portion retreating portion of the base member may be constituted by a through hole for retreating.

The meshing portion retracting portion of the base member may have an engaging portion opposing portion that enters the concave portion of the light-receiving member or the inside of the through-hole of the resin molded portion, and faces the meshing portion of the light-receiving member.

The engagement portion facing portion of the base member is a double bottom portion that overlaps with the concave portion for mounting the light distribution member of the resin molded portion, and is opposite to the meshing portion of the light distribution member.

The combination of the base member and the resin molded portion is formed in a substantially rectangular shape when viewed in plan, and the concave portion or the through hole for mounting the light distribution member in the resin molded portion and the meshing portion retracting portion of the base member may be provided in the foregoing The position where the peripheral portions of the outline rectangle correspond to each other is viewed in plan.

Further, the illuminating device according to the present invention may further include the light distribution member that has a light-distributing light emitted from the semiconductor light-emitting element, and the meshing portion that meshes with a concave portion or a through hole for mounting the light distribution member of the resin molded portion .

In the light distribution member, the engagement portion of the base member and the resin molded portion can be positioned by engaging the engagement portion with a concave portion or a through hole for mounting the light distribution member in the resin molded portion.

The resin molded portion includes a connector accommodating portion that houses a connector that is electrically connected to the semiconductor light emitting element from the outside and that has a fixing hole, and the light distribution member may have a positioning pin that is received by the connector The fixing holes of the connector of the accommodating portion are engaged to perform positioning of the connector.

The light distribution member may have a raft-shaped support portion formed with a front end contact surface in contact with an opposite surface of the bottom plate member stacked on the semiconductor light-emitting element module.

The light distribution member has a cylindrical protrusion formed with an end contact surface before contact with an opposite surface of the bottom plate member stacked on the semiconductor light emitting element module, and a female screw hole is formed on the front end contact surface of the cylindrical protrusion. a through hole for a screw is formed on the opposite surface of the bottom plate member, and the small screw is inserted from the opposite side of the bottom plate member in a state in which the female screw hole and the through hole for the screw are aligned. The small screw of the through hole is screwed into the female screw hole, and the semiconductor light emitting element module and the bottom plate member can be fixed in a stacked state.

The resin molding portion includes at least two connector accommodating portions that accommodate at least two connectors that are electrically connected to the semiconductor light-emitting device from the outside, and are accommodated in the at least two connectors of the at least two connector accommodating portions. The extending directions of the at least two cables connected to the at least two connectors are different from each other.

The extending directions of the at least two cables may be orthogonal to each other.

The light distribution means and the lighting fixture of the present invention can effectively diffuse light from the lighting fixture to the outside or reduce the height of the component.

10‧‧‧Liquid crystal display device

11‧‧‧LCD panel

12‧‧‧floor

12a‧‧‧through holes for cables

15‧‧‧Lighting appliances

20‧‧‧LED module

21‧‧‧LED Holder

22‧‧‧Circular recess

23‧‧‧LED

24‧‧‧Reflective film

25, 26‧‧‧ connector connection groove

25a, 26a‧‧‧ anode

25b, 26b‧‧‧ cathode

27‧‧‧Installation recess

27'‧‧‧Installation through hole

28‧‧‧Damping device

28A‧‧‧Installation surface

28B, 28C‧‧‧Retraction

28D‧‧‧Retraction recess

28E‧‧‧Retraction through hole

28F‧‧‧Interface of the meshing section

28F1‧‧‧Upright wall

29‧‧‧Connecting board

29A‧‧‧round hole

29B‧‧‧First Conductive Department

29C‧‧‧Second Conductive Department

29D, 29E‧‧‧Meshing holes

32‧‧‧With connector cable

33‧‧‧ cable

34‧‧‧Wire

35‧‧‧covered

36‧‧‧Connector

37‧‧‧Insulator

37a‧‧‧Chiseled protrusion

38‧‧‧First contact

39‧‧‧second junction

42‧‧‧Relay connector

43‧‧‧Insulator

44‧‧‧Fixed holes

45‧‧‧connection hole

50‧‧‧Lighting means

51‧‧‧Lighting board

51a‧‧‧Back

51b‧‧‧ surface

51c‧‧‧ interval gradient

51L‧‧‧Longside

51S‧‧‧ Short side

52‧‧‧Central Plane

53‧‧‧The opposite side of the peripheral side

54‧‧‧ fitting holes

55a, 55b‧‧‧ Obstruction of the Department of Proliferation

56‧‧‧Installation recess

57‧‧‧LED module support

58‧‧‧Support protrusion

59‧‧‧Locating pin

60‧‧‧Wood-shaped support

61‧‧‧ front end contact surface

64‧‧‧First inclined part

66, 67‧‧‧ peripheral plane

69‧‧‧Second inclined part

70‧‧‧Female threaded holes

71‧‧‧Cylinder

73‧‧‧Conical recess

76‧‧‧ illumination light incident member

77‧‧‧锷

78‧‧‧Injection

80‧‧‧ containment recess

81‧‧‧Female threaded holes

82‧‧‧Installation feet

84‧‧‧Light quantity adjustment component

85‧‧‧Center through hole

86‧‧‧Light adjustment plate

87, 88‧‧‧ Shielding Department

89‧‧‧Center through hole

90‧‧‧Small screws

91‧‧‧ Male thread department

92‧‧‧ head

93‧‧‧Lighting control unit

The first drawing is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention.

The second picture is a front view of the lighting fixture.

The third diagram (a) is a cross-sectional view taken along the line III-III of the second diagram, and (b) is an enlarged view of the portion b of the (a).

Fig. 4(a) is a cross-sectional view taken along line IV-IV of the second figure, and Fig. 4(b) is an enlarged view of a portion b of (a).

Figure 5 (a) is a rear view of the lighting fixture, and (b) is a partially enlarged view of the system (a).

The sixth drawing is an exploded perspective view from the front side of the lighting fixture.

The seventh drawing is an exploded perspective view from the back side of the lighting fixture.

Figure 8(a) is a cross-sectional view taken along the line VIII-VIII of Figure 6 and (b) is an enlarged view of the portion b of (a).

The ninth diagram (a) is a perspective view seen from the front side of the illumination light control unit, and (b) is a perspective view seen from the back side of the illumination light control unit.

The tenth diagram is an exploded perspective view seen from the front side of the illumination light control unit.

The eleventh figure is an exploded perspective view seen from the back side of the illumination light control unit.

The twelfth diagram is an enlarged cross-sectional view cut at a position passing through the center portion of the illumination light incident member.

The thirteenth picture is a perspective view of the LED module.

Figure 14 is a perspective view of the connector cable.

The fifteenth diagram is a perspective view of the connector cable as viewed from a different direction from the fourteenth diagram.

Fig. 16 is an enlarged perspective view of the center portion of the light distribution plate in a separated state from the front side of the LED module.

The seventeenth image is an enlarged perspective view from the center of the light distribution plate in the separated state and the back side of the LED module.

The eighteenth figure shows the LED module and the connection groove connecting one of the LED modules A diagram of the connector cable.

Fig. 19 is a schematic cross-sectional view showing a liquid crystal display device.

Fig. 20 is a perspective view as seen from the front side of the light distribution plate of the comparative example.

The twenty-first (A) diagram is a perspective view of the single structure of the cooling device (base member) viewed from below, and the twenty-first (B) diagram shows the cooling device (base member) of the twenty-first (A) diagram A state diagram in which a via (conducting member) is embedded.

The twenty-second figure shows a bottom view of the configuration of the lighting fixture (semiconductor light-emitting element module).

The twenty-third figure is an arrow sectional view along the line XXIII-XXIII of the twenty-second figure.

The twenty-fourth figure is an arrow sectional view taken along line XXIV-XXIV of the twenty-second diagram.

The twenty-fifth diagram is an arrow cross-sectional view along the XXV-XXV line of the twenty-second diagram.

Fig. 26 is a view showing another embodiment of the engaging portion retreating portion of the cooling device (base member).

Fig. 27 is a view showing still another embodiment of the engaging portion retreating portion of the cooling device (base member).

Fig. 28 is a view showing still another embodiment of the engaging portion retreating portion of the cooling device (base member).

Fig. 29 is a view showing still another embodiment of the engaging portion retreating portion of the cooling device (base member).

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the present embodiment, the light distribution means 50 is used as a part of the liquid crystal display device 10.

The large element of the liquid crystal display device 10 includes a liquid crystal panel 11 and a metal base plate 12 (bottom) A plate member, a heat sink), and a lighting fixture (semiconductor light-emitting element module) 15. The liquid crystal panel 11 and the bottom plate 12 are both rectangular and have the same shape as the front surface. A cable through hole 12a is formed in the vicinity of the center of the bottom plate 12 (refer to Fig. 19). Further, four through holes for screwing (not shown) are formed in the bottom plate 12. In the liquid crystal display device 10, the liquid crystal panel 11, the bottom plate 12, and the lighting fixture 15 are stacked and integrated in the thickness direction of the respective members (the vertical direction in the first drawing) in the order of the liquid crystal panel 11, the bottom plate 12, and the lighting fixture 15 ( Refer to the nineteenth figure).

The lighting fixture (semiconductor light-emitting element module) 15 includes an LED module 20 and a light distribution means 50.

As shown in the thirteenth, sixteenth, and seventeenthth aspects, the LED module 20 is provided with an LED holder 21 having an overall shape and a schematic cube (the front shape is a substantially square shape). The LED holder 21 is made of an insulating material such as resin. A circular recess 22 is formed on one surface of the LED module 20, and connector connecting grooves (connector housing portions) 25 and 26 are formed at two corners on the diagonal line of the LED holder 21. A plurality of (36 in the illustrated embodiment) LEDs 23 (semiconductor light-emitting elements, light sources) are fixed to the surface of the circular recess 22 . Further, in order to avoid the LEDs 23 on the surface of the circular recessed portion 22, a reflective film 24 in which titanium oxide (TiO2) or the like is mixed as a coloring agent and the entire insulating property is formed in the polyurethane resin of the main component is formed. A metal anode 25a and a cathode 25b are integrally formed on the inner surface of the connector connecting groove 25, and a metal anode 26a and a cathode 26b are integrally provided on the inner surface of the connector connecting groove 26. The anode 25a and the cathode 25b, and the anode 26a and the cathode 26b are electrically connected to the anode and cathode of each of the LEDs 23, respectively. Further, in the LED holder 21, four mounting recesses 27 or mounting through holes 27' (recesses or through holes for mounting the light distribution member) on the outer peripheral side of the circular recess 22 are formed (illustration of the embodiment) The through hole 27' for mounting, however, this may also be a bottomed mounting recess 27). Also, in the circle with the LED holder 21 A metal cooling device 28 is fixed to the surface on the opposite side of the concave portion 22.

More specifically, the LED module 20 constitutes a combination of a metal cooling device (base member) 28, a metal conduction plate (conduction member) 29, and a resin molding portion LED holder 21 as components, which are formed when viewed in plan view. A roughly rectangular one-piece molded article. The twenty (A) and twenty-first (A) figures show the single structure of the cooling device 28, and the twentieth (B) and twenty-first (B) figures show that the conduction plate is embedded in the cooling device 28. The state of 29 (the figures do not depict the LED holder 21). The connector connecting grooves 25 and 26, the mounting recess 27, or the mounting through hole 27' are formed in the elements of the LED holder 21.

A circular mounting surface 28A on which the LEDs 23 are mounted is formed to protrude from the surface (upper surface) of the cooling device 28. The circular recess 22 of the LED module 20 is formed by the circular mounting surface 28A of the cooling device 28 and the inner cylindrical surface of the LED holder 21 surrounding the circular mounting surface 28A. The cooling device 28 has two retracting notches (engagement portion retreating portions) 28B that are located on opposite sides of the rectangular peripheral portion of the rectangular viewing plane, and two retreating notches that are located at two opposite corners of the rectangular peripheral portion of the plan view. Portion (engagement portion retracting portion) 28C. The retracting notch portion 28B and the retreating notch portion 28C form an R shape which is a part of the periphery of the opening and lowering device 28.

The conduction plate 29 is, for example, a flat plate formed of a metal such as brass, beryllium copper or a copper-nickel-bismuth-based copper alloy which is excellent in electrical conductivity, thermal conductivity, and rigidity. The conduction plate 29 depicted in the twenty-fifth (B) is composed of a plurality of members, but the plurality of members are originally composed of an integrally molded product connected by a carrier portion or a bridge. When the conduction plate 29 is fitted into the cooling device 28 and is coupled (integrated) by the LED holder 21, the cut carrier portion or the connecting bridge is separated into a plurality of members. The conduction plate 29 has a circular hole 29A (the twentieth (B) diagram) embedded in the outer circumference of the circular mounting surface 28A of the cooling device 28. The conduction plate 29 has a circumference around the circular hole 29A and is mounted to the mounting surface 28A of the cooling device 28. Each of the pair of first conductive portions 29B and the second conductive portion 29C that the LEDs 23 are turned on. The conduction plate 29 has two engagement holes 29D which are located on opposite sides of the rectangular peripheral portion of the rectangular view, and two engagement holes 29E which are located at two opposite corners of the rectangular peripheral portion of the rectangular view.

As shown in the twenty-second to twenty-fifth drawings, in the LED module 20 (lighting fixture 15) integrally formed by the cooling device 28, the conduction plate 29, and the LED holder 21, each of the four mounting recesses 27 Or the mounting through hole 27', the total of four engagement holes 29D and the engagement hole 29E, and the total of four retracting notches 28B and the retracting notch portion 28C are overlapped at positions corresponding to the peripheral portions of the outline rectangle in plan view. (connected in the up and down direction).

The connector connector cable 25 and the connector connection groove 26 of the LED module 20 can be connected (accommodated) with the connector cable 32 and the relay connector 42, respectively.

The connector cable 32 shown in the fourteenth, fifteenth, and the like is a system in which two cables 33 are integrated with the connector 36. The flexible cable 33 includes a wire 34 that bundles a plurality of metal wires, and a cover 35 made of an insulating material covering the surface of the wire 34, and is formed in a hose shape; both ends of each cable 33 are removed by removing the cover 35. The wire 34 is exposed. The connector 36 has an insulator 37 made of an insulating material, and a first contact 38 and a second contact 39 which are both made of metal. The front end portion of the insulator 37 constitutes a fitting protrusion 37a. The first contact 38 is connected to one end of one of the electric wires 34, and the second contact 39 is connected to one end of the other electric wire 34. The extending direction of the cable 33 (the end portion of the connector 36 side) to which the connector cable 32 is attached is substantially parallel to the extending direction of the first contact 38 and the second contact 39 (the protruding direction of the fitting projection 37a).

The relay connector 42 shown in Fig. 16 and Fig. 17 has an insulator 43 made of an insulating material, a first contact 38 (not shown), and a second contact 39 (not shown). The insulator 43 is provided with a fitting protrusion 37a (see the sixteenth diagram). Further in the insulator 43, in the pair of first contacts 38 A pair of fixing holes 44 penetrating through the insulator 43 are bored in a direction orthogonal to the extending direction of the second contact 39 (the protruding direction of the fitting projection 37a). Further, a connection hole 45 is provided in the relay connector 42. One end portion of the two cables 33 can be detachably fitted to the connection hole 45. When the cable 33 is fitted into the connection hole 45, one end of one of the electric wires 34 is connected to the first contact 38 of the relay connector 42, and one end of the other electric wire 34 is connected to the second contact 39. The extending direction of the cable 33 (the end portion of the relay connector 42 side) connected to the relay connector 42 extends in the direction in which the first contact 38 and the second contact 39 extend (the protruding direction of the fitting projection 37a) Roughly orthogonal.

As shown in Figs. 18 and 19, the connector cable 32 can be attached to and detached from the LED module 20 by fitting the fitting projection 37a of the connector 36 to the connector connecting groove 25. When the connector cable 32 is mounted on the LED module 20, the first contact 38 and the second contact 39 of the connector 36 are respectively connected to the anode 25a and the cathode 25b of the connector connecting groove 25, and the extension direction of the cable 33 The thickness direction of the LED module 20 (the LED holder 21) is substantially orthogonal. The relay connector 42 can be attached to and detached from the LED module 20 by fitting the fitting projection 37a of the insulator 43 to the connector connecting groove 26 (refer to Fig. 16). When the relay connector 42 is mounted on the LED module 20, the first contact 38 and the second contact 39 of the relay connector 42 are respectively connected to the anode 26a and the cathode 26b of the connector connection groove 26, and the cable 33 The extension direction is substantially parallel to the thickness direction of the LED module 20 (the LED holder 21) (the connector cable 32 is substantially orthogonal to the cable 33) (refer to FIG. 19). That is, the connector cable 32 and the relay connector 42 (two connectors) connected to one of the connector connection groove 25 and the connector connection groove 26 are connected to the connector cable 32. The extending direction of the cable 33 and the extending direction of the cable 33 connected to the relay connector 42 are different from each other. More specifically, the extending direction of the cable 33 connected to the connector cable 32 and the connecting direction of the cable 33 connected to the relay connector 42 are in a positional relationship in which they do not intersect each other and are orthogonal.

The light distribution means 50 includes a light distribution plate (light distribution member) 51, an illumination light incident member 76, a light amount adjustment member 84, a light amount adjustment plate 86, and a screw 90.

The light distribution plate 51 is a substantially flat-shaped integrally molded product made of a light-transmitting material (for example, a resin such as glass or acrylic), and has a front shape similar to that of the liquid crystal panel 11 and the bottom plate 12. The back surface 51a of the light distribution plate 51 (the lower surface of the first figure, the surface opposite to the bottom plate 12) is constituted by a flat surface. Further, the surface 51b of the light distribution plate 51 (the upper surface of the first figure, the surface opposite to the liquid crystal panel 11) is not completely flat, and each portion is stepped.

The central portion of the surface 51b of the light distribution plate 51 is configured by forming a semicircular central flat portion 52 at a long end 51L direction of the light distribution plate 51. The central flat portion 52 is a plane parallel to the back surface 51a. The circumferential side opposing portion 53 is formed concentrically with the central flat portion 52 at the center portion of the central flat portion 52. As shown in the figure, the surface 51b of the outer peripheral side opposing portion 53 is a plane lower than the surface 51b of the central flat portion 52 (on the side of the back surface 51a) and parallel to the back surface 51a. Further, on the inner peripheral side of the outer peripheral side opposing portion 53, a fitting hole 54 having a circular cross section that penetrates the light distribution plate 51 in the thickness direction and is concentric with the outer peripheral side opposing portion 53 is formed. As shown in detail in the sixteenth embodiment, four arc-shaped obstruction diffusion portions 55a and 55b centering on the fitting hole 54 (and an incident portion 78 to be described later) are recessed in the surface 51b of the outer peripheral side opposing portion 53. Specifically, it is provided with one of the pair of barrier diffusion portions 55a located on a line connecting the pair of the light distribution plate 51 to the center of the long side 51L and the fitting hole 54, and one of the pair of light distribution plates 51 facing the short side 51S and the fitting hole One of the straight lines of the center of 54 blocks the diffusion portion 55b. Each of the barrier diffusion portions 55a and 55b is provided in a circumferential direction around the fitting hole 54 at equal angular intervals (90° intervals). Further, on the surface 51b of the outer peripheral side opposing portion 53, four recessed mounting hole recesses 56 each having a circular cross section between the respective obstructing diffusing portions 55a and 55b and the outer peripheral edge portion of the outer peripheral side opposing portion 53 are recessed. The inner peripheral surface of the outer peripheral side opposing portion 53 (the inner surface of the fitting hole 54) is located at the center of the fitting hole 54. Four LED module supporting portions 57 are protruded from the state between the barrier diffusion portions 55a and 55b. The end portion on the side of the back surface 51a of the LED module supporting portion 57 is constituted by a cylindrical support protrusion (engagement portion, engaging pin) 58. Further, four positioning pins 59 located on the outer peripheral side of the fitting hole 54 (and the mounting leg recess 56) are protruded from the back surface 51a.

The portion adjacent to the central flat portion 52 of the surface 51b is constituted by a first inclined portion 64 having a front shape (a substantially elliptical shape). As shown in the eighth figure, the distance between the first inclined portion 64 and the surface 51b and the back surface 51a (the thickness of the light distribution plate 51) becomes longer as the radial distance from the fitting hole 54 (centered with the fitting hole 54). Gradually shrink. That is, the first inclined portion 64 is configured by a plane that is not parallel to the back surface 51a.

The portion of the surface 51b adjacent to the outer peripheral side of each of the first inclined portions 64 is constituted by a pair of outer peripheral side flat surfaces 66 and one outer peripheral side flat surface 67. The outer peripheral side flat surface 66 and the outer peripheral side flat surface 67 are lower than the front surface 51b of the center flat surface portion 52 (on the side of the back surface 51a) and are parallel to the back surface 51a and the center flat surface portion 52.

The surface 51b is adjacent to the outer peripheral side of the outer peripheral side flat surface 66 and the outer peripheral side flat surface 67, that is, the four corner portions of the light distribution plate 51 are respectively constituted by the second inclined portion 69. As shown in the eighth figure, the second inclined portion 69 is formed by a plane that is not parallel to the back surface 51a, and the distance between the second inclined portion 69 and the surface 51b and the back surface 51a (the thickness of the light distribution plate 51) is separated from the surface. The radial distance of the fitting hole 54 (centering of the fitting hole 54) becomes long and gradually decreases. In other words, the portion (four portions) of the light distribution plate 51 corresponding to the second inclined portion 69 constitutes the interval gradation portion 51c in which the distance (thickness) between the surface 51b and the back surface 51a is gradually narrowed toward the outer peripheral surface side of the light distribution plate 51.

As shown in the first, second, and sixth figures, the female screw hole 70 that penetrates the light distribution plate 51 in the thickness direction is formed at four places corresponding to the light distribution plate 51 and the first inclined portion 64. Furthermore, as shown in the third figure, As shown in the fourth, fifth, and seventh figures, a cylindrical projection 71 is protruded from a portion of the back surface 51a corresponding to each of the female screw holes 70. Each of the female screw holes 70 is also formed on the inner circumferential surface of each of the cylindrical projections 71.

As shown in the third, fifth, and seventh figures, a plurality of conical recesses 73 are formed on the outer peripheral side of the portion corresponding to the back surface 51a and the outer peripheral side opposing portion 53. As shown in FIG. 5 and the like, a triangular shape region between the short side 51S of one of the light distribution plates 51 (the left side of the fifth figure) and the cylindrical protrusion 71 (the female screw hole 70) provided close to the short side 51S ( A portion of the short side 51S constitutes a bottom side of the triangle, and a conical recess 73 is formed at a higher density than other regions.

The illumination light incident member 76 is a substantially disk-shaped integrally molded product made of a light transmissive material (for example, a resin such as glass or acrylic). However, the transmittance of light (illumination light emitted from the LEDs 23 of the LED module 20) is lower than that of the light distribution plate 51. The large element of the illumination light incident member 76 has a disk-shaped dam portion 77 and a conical incident portion 78 having a smaller diameter than the dam portion 77 of the central portion of the surface of the dam portion 77. A reflective film (such as a film of mixed titanium oxide or a half mirror) is attached to the surface (conical surface) of the incident portion 78. The light transmittance of the reflective film is lower than that of the light distribution plate 51. Further, the transmittance of the illumination light incident member 76 may be the same as or higher than that of the light distribution plate 51, and then the reflective film may be formed on the conical surface, or the transmittance of the illumination light incident member 76 may be lower than that of the light distribution plate 51, and then omitted. Reflecting the film.

The side surface of the dam portion 77 and the incident portion 78 is formed by a flat surface, and the dam portion 77 and the incident portion 78 are recessed in the central portion of the opposite side surface to form a concentric circular receiving recess portion 80. The bottom surface of the housing recess 80 is formed by a plane parallel to the opposite side surface of the flange portion 77. A female screw hole 81 whose inner end portion extends to the inside of the incident portion 78 is bored in a central portion of the bottom surface of the housing recess 80. On the surface of the dam portion 77 on the side of the incident portion 78, four mounting legs 82 which are formed in a cylindrical shape on the outer peripheral side of the incident portion 78 are protruded at equal angular intervals in the circumferential direction. The outer diameter of the crotch portion 77 is the same as the outer peripheral side opposite portion 53 The outer diameter of the projecting portion 78 is the same as the inner diameter of the fitting hole 54.

A center through hole 85 is formed in a central portion of a disk-shaped light amount adjusting member 84 made of a metal plate. The outer shape of the light amount adjusting member 84 is the same as the inner peripheral surface shape of the housing recess 80, and the thickness of the light amount adjusting member 84 is the same as the depth of the housing recess 80.

The light transmittance of the light amount adjustment member 84 (the illumination light emitted from the LED 23 of the LED module 20) is lower than that of the light distribution plate 51 and the illumination light incident member 76. Since the light amount adjusting member 84 of the present embodiment is made of metal, light (illumination light emitted from the LEDs 23 of the LED module 20) is not transmitted.

The light amount adjustment plate 86 is a substantially disk-shaped integrally molded product made of a light transmissive material (for example, a glass or a resin such as an acrylic or PET (polyethylene terephthalate) film). As shown, the light amount adjustment plate 86 has a smaller outer shape than the illumination light incident member 76 and is larger than the light amount adjustment member 84. The light amount adjustment plate 86 has illumination light that is incident on the light amount adjustment plate 86 from the surface of the light amount adjustment plate 86 (the surface on the light amount adjustment member 84 side), and the other surface (the surface opposite to the light amount adjustment member 84) The function of spreading and shooting. However, on the other surface of the light amount adjustment plate 86, one light shielding portion 87 and a plurality of light shielding portions 88 (by means of printing or the like) are applied. The light shielding portion 87 is formed in a circular shape (large diameter) formed at the center portion of the light amount adjustment plate 86. Each of the light shielding portions 88 has a circular shape smaller than the light shielding portion 87 formed in the outer peripheral side region of the light shielding portion 87. The light shielding portion 87 and the light shielding portion 88 are configured by a light-shielding material (for example, a titanium oxide (TiO 2 ) or the like is mixed as a colorant in a polyurethane resin). A center through hole 89 penetrating both is formed in a central portion of the light amount adjustment plate 86 and the light shielding portion 87.

After the light amount adjusting member 84 is inserted into the housing recessed portion 80 of the illumination light incident member 76, the light amount adjusting plate 86 is covered by the flange portion 77 and the light amount adjusting member 84, and inserted into the center through hole 89 and the center through hole 85 from the outside of the light amount adjusting plate 86. The male thread portion 91 of the screw 90 is screwed to the female screw When the hole 81 is pressed against the surface of the light amount adjusting plate 86, the light distribution plate 51, the illumination light incident member 76, the light amount adjusting member 84, the light amount adjusting plate 86, and the screw 90 are obtained. The illumination light control unit 93 of the integrated object (refer to the ninth diagram or the like). When the illumination light control unit 93 is viewed from the front, the outer peripheral edge portion of the light shielding portion 87 of the light amount adjustment plate 86 substantially coincides with the outer peripheral edge portion of the light amount adjustment member 84, and each of the light shielding portions 88 is located on the outer circumferential side of the light amount adjustment member 84.

As shown in the third and fourth figures, the illumination light control unit 93 is fitted to each of the mounting leg portions 56 corresponding to the light distribution plate 51 by the mounting legs 82 of the illumination light incident member 76, and the dam portion 77 is provided. The outer peripheral portion (portion on the outer peripheral side of the incident portion 78) is mounted (contacted) on the bottom surface of the outer peripheral side opposing portion 53 and the incident portion 78 is fitted into the fitting hole 54 (in the fitting hole 54 so that the outer peripheral side opposing portion 53 is provided) The light incident plate 51 can be detachably attached to the incident portion 78 from the outer peripheral side.

Further, the LED module 20 integrated with the connector cable 32 and the relay connector 42 is fitted to the fixing hole 44 of the insulator 43 by the two positioning pins 59, and the four LED module supporting portions 57 are provided. The support protrusions (engagement portions, engaging pins) 58 are fitted to the respective mounting recesses 27 or the mounting through holes 27', and are detachably attached to the back surface 51a of the light distribution plate 51. At this time, as shown in Fig. 19, the cable 33 with the connector cable 32 is substantially parallel to the plane on which the light distribution plate 51 is disposed, and the cable 33 of the relay connector 42 is substantially orthogonal to the plane. Further, each of the LEDs 23 of the LED module 20 faces the incident portion 78 of the illumination light incident member 76 (the thickness direction of the light distribution plate 51) (see FIGS. 3 and 4). As described above, when the LED module 20 is integrated with the light distribution means 50 (the light distribution plate 51 and the illumination light control unit 93), the lighting fixture 15 is completed. In this state, when the luminaire 15 is viewed in the thickness direction of the light distribution plate 51, all the LEDs 23 are located on the inner peripheral side of the outer peripheral edge portion of the incident portion 78 (the connection end portion of the dam portion 77 of the largest diameter portion) (see the Three maps, fourth map). Further, the light amount adjusting member 84 is located on the opposite side of each of the LEDs 23 with the illumination light incident member 76 (incident portion 78) interposed therebetween.

As shown in the twenty-second to twenty-fifth diagrams, the support protrusion (engagement portion, engagement pin) 58 and the LED of the light distribution plate (light distribution member) 51 are completed in the state in which the lighting fixture (semiconductor light-emitting element module) 15 is completed. The mounting recess 27 or the mounting through hole 27' of the holder (resin forming portion) 21, and the engaging hole 29D or the engaging hole 29E of the conductive plate (conducting member) 29 are engaged to further escape (to hide) the cooling device ( The base member 28 is provided with a notch portion (engagement portion retracting portion) 28B or a retracting notch portion (engagement portion retracting portion) 28C. Thereby, the support structure of the combination of the temperature lowering device (base member) 28 and the LED holder (resin molding portion) 21 and the light distribution plate (light distribution member) 51 can be suitably realized (easily assembled). Further, the light distribution plate (light distribution member) 51 can further reduce the element height of the lighting fixture (semiconductor light-emitting element module) 15.

Further, the light distribution plate (light distribution member) 51 engages the cooling device (base member) 28 and the LED by engaging the support protrusion (engagement portion, engagement pin) 58 itself with the attachment recess 27 or the mounting through hole 27'. Positioning is performed by a combination of a holder (resin forming portion) 21.

Further, the light distribution plate (light distribution member) 51 positions the relay connector 42 by engaging the positioning pin 59 itself with the fixing hole 44 of the insulator 43.

As shown in the twenty-third diagram, the light distribution plate (light distribution member) 51 has an opposite surface to the bottom plate (floor member) 12 stacked on the lighting fixture (semiconductor light-emitting element module) 15 (in the twenty-third diagram) The raft-like support portion 60 that contacts the front end contact surface 61 is not depicted. Thereby, the laminated structure of the lighting fixture 15 and the bottom plate 12 can be stabilized, and the contact stability with the cooling device 28 and the bottom plate 12 can be ensured (guaranteed). In addition, the shape and arrangement position of the raft-shaped support portion 60 are not limited. For example, the raft-like support portion 60 may be disposed so as to surround the peripheral portion of the substantially rectangular shape in a plane surrounding the LED module 20 (for example, two L-shaped shapes in a diagonal shape may be formed). Alternatively, as depicted in the eighth diagram (b), the raft-like support portion 60 may be intermittently (porously) disposed on the light distribution plate (light distribution structure) The peripheral portion of the back surface 51a of the member 51.

In the lighting fixture 15 and the bottom plate 12, the cable 33 of the relay connector 42 is pulled to the back surface of the bottom plate 12 (opposite to the light distribution plate 51) through the cable through hole 12a, and the front end of the four cylindrical projections 71 of the light distribution plate 51 is provided. The surface (front end contact surface) is in contact with the surface of the base plate 12 and the light distribution plate 51, and the female threads of the light distribution plate 51 are inserted into the screw holes (not shown) of the through holes for the small screws from the back side of the bottom plate 12. The hole 70 is screwed and can be fixed in the state of both stacks (refer to Fig. 19). Furthermore, when the lighting fixture 15 and the bottom plate 12 are fixed, the cooling device 28 of the LED module 20 is in contact with the opposite surface of the bottom plate 12 and the cooling device 28 (see FIG. 19).

Further, when the liquid crystal panel 11 is stacked on the surface 51b of the light distribution plate 51 in a fixed state, the liquid crystal display device 10 is completed (refer to the nineteenth diagram).

Connecting the connector cable 32 and the one-side cable 33 (wire 34) of the relay connector 42 to the anode of the power source (not shown), and connecting the other cable 33 (the wire 34) to the cathode of the power source, When the switch (not shown) is switched from OFF to ON, the current generated by the power source is supplied to the LED module 20 (LED 23) via each cable 33, and thus the LEDs 23 emit light. Further, when the switch is switched from on to off, the supply of the LED 23 is interrupted by the current, so that each of the LEDs 23 is turned off.

Since the illumination light emitted from each of the LEDs 23 of the LED module 20 has a high linearity, as shown in the third and fourth figures, most of the illumination light of each of the LEDs 23 advances toward the incident portion 78 (see the third figure, Arrows A, B) in the fourth figure. Further, the other part of the illumination light emitted from the LED 23 is reflected by the reflection film 24 of the LED module 20 toward the incident portion 78 side (see arrows A and B in the third and fourth figures).

The front end surface of the incident portion 78 (the surface on the side of the LED module 20) is a conical surface, and The transmittance of the incident portion 78 (the illumination light incident member 76 and the reflective coating film) is lower than that of the light distribution plate 51. Therefore, the illumination light from the LED module 20 toward the incident portion 78 (including the light reflected by the reflective film 24) is roughly 90° from the front end surface (conical surface, reflective film) of the incident portion 78, and It is radially advanced from the front (refer to arrow A of the third figure and the fourth figure). At this time, the illuminating light that has traveled radially enters the inside of the light distribution plate 51 (outer peripheral side opposing portion 53) from the inner peripheral surface of the fitting hole 54 (outer peripheral side opposing portion 53), and further travels radially inside the light distribution plate 51. Since the illumination light emitted from each of the LEDs 23 of the LED module 20 is high, the illumination light can reach the entire interior of the light distribution plate 51.

However, the light distribution plate 51 is provided with a barrier diffusion portion 55a and a barrier diffusion portion 55b. Therefore, a part of the light beam from the incident portion 78 toward the long side 51L side of the light distribution plate 51 and a part of the light beam toward the pair of short sides 51S side are blocked by the barrier diffusion portion 55a and the barrier diffusion portion 55b (refer to the third diagram). , arrow A of the fourth figure. Therefore, the illumination light of the excess light amount is not supplied to the vicinity of the long side 51L of the light distribution plate 51 having a short linear distance from the incident portion 78 and the vicinity of the short side 51S. Further, between the interval gradation portion 51c (four ridge portions) of the light distribution plate 51 having a long linear distance from the incident portion 78 and the incident portion 78, there is no obstruction diffusion portion 55a that hinders the illumination light radially diffused inside the light distribution plate 51 from traveling. 55b. Further, the interval grading portion 51c of the light distribution plate 51 is gradually reduced in thickness in the light distribution plate 51 and the thickness is gradually decreased toward the respective corners (the point at which the short side 51S intersects the long side 51L). Therefore, the luminance (beam density) of the illumination light that has passed through the inside of the light distribution plate 51 to the interval gradation portion 51c (four ridge portions) is not significantly different from the other portions inside the light distribution plate 51. Therefore, the illumination light reaches the interval gradation portion 51c (four turns) of the light distribution plate 51 with a sufficient amount of light. In this manner, since the amount of illumination light diffused inside the light distribution plate 51 is controlled by the diffusion preventing portions 55a and 55b (the presence or absence thereof), a sufficient and appropriate amount of illumination light can be supplied substantially uniformly inside the light distribution plate 51.

Further, the illumination light diffused inside the light distribution plate 51 is reflected on the surface of the surface 51b by the surface of the conical concave portion 73 recessed on the back surface 51a of the light distribution plate 51 (see the arrow in the third figure). Therefore, sufficiently bright illumination light can be emitted from the entire surface 51b of the light distribution plate 51.

Further, since the illumination light that supplies the excess light amount to the vicinity of the long side 51L and the vicinity of the short side 51S of the light distribution plate 51 is suppressed by the action of the diffusion preventing portions 55a and 55b, it is possible to suppress the emission from the portion to the outside of the surface 51b. The illumination is too bright.

Further, since the metal screw is inserted into the female screw hole 70 of the light distribution plate 51, the traveling of the illumination light radially diffused inside the light distribution plate 51 is easily hindered by the small screw. That is, the amount of illumination light supplied to the (triangle) region between the small screw (the female screw hole 70) and the short side 51S located near the small screw is higher than that of the other portions (however, it does not contain the remaining 3) The small screws (the female screw hole 70) and the area between the short side 51S and the long side 51L in the vicinity of the small screw are relatively easily reduced. However, since the conical recessed portion 73 is provided at a higher density than the other portions in the triangular region of the light distribution plate 51, the illumination light can be reflected on the surface 51b side with higher efficiency (than other portions) by the conical recessed portion 73 or the like. . Therefore, the illumination light emitted from the triangular region to the outside of the surface 51b is not excessively darker than other portions.

Further, a part of the illumination light (including the light reflected by the reflection film 24) emitted from the LED module 20 may be directly emitted through the illumination light incident member 76 (and the reflection film) without being reflected by the incident portion 78. It is outside the crotch portion 77 (see arrow B in the third and fourth figures). However, the light amount adjusting member 84 housed in the housing recessed portion 80 of the crotch portion 77 is made of metal, and the light transmitting amount (the light amount adjusting member 84) is transmitted through the crotch portion 77 toward the light amount adjusting member 84 side, and is completely completed by the light amount adjusting member 84. Reflected to the side of the back surface 51a. Therefore, it is possible to suppress the illumination light that is transmitted to the outside of the light distribution means 50 (on the surface 51b side) through the illumination light incident member 76 from being excessively bright (forming a hot spot).

On the other hand, the illumination light that is transmitted through the insertion recessed portion 80 of the dam portion 77 is located on the outer peripheral side of the light-shielding portion 87 of the light amount adjustment plate 86 (hereinafter referred to as the outer peripheral side region). Since a plurality of light blocking portions 88 are formed in the outer peripheral side region, the amount of light emitted from the outer peripheral side region to the outside of the light amount adjusting plate 86 is not excessive. However, the outer peripheral side region (the light amount adjusting plate 86) diffuses the illumination light and emits the outside. Therefore, the illumination light emitted from the outer peripheral side region of the light amount adjustment plate 86 via the dam portion 77 is not excessively dark.

As described above, the light distribution means 50 of the present embodiment can supply the liquid crystal panel 11 with a sufficient and appropriate amount of illumination light (illumination light having a small unevenness in brightness) from the entire light distribution means 50, so that the entire liquid crystal panel 11 can be supplied with a moderate degree. The amount of illumination.

Further, since the light distribution plate 51 is a flat lens, the moldability and the workability are good, and the material required for manufacturing one light distribution plate 51 can be reduced. That is, the light distribution plate 51 can be manufactured at low cost.

Further, since the thickness of the light distribution plate 51 can be reduced, the thickness of the liquid crystal display device 10 and the light distribution means 50 can be suppressed from increasing.

Furthermore, since the heat generated by each of the LEDs 23 is conducted to the temperature lowering device 28 via the reflective film 24 and the LED holder 21, the heat is dissipated from the cooling device 28, and is conducted from the cooling device 28 to the bottom plate 12, and the bottom plate 12 is removed from the bottom plate 12. Since the heat is dissipated, the heat of the LED 23 can be efficiently radiated to the outside of the liquid crystal display device 10 (light distribution means 50). Therefore, it is possible to prevent the luminous efficiency of the LED 23 from being lowered due to the high temperature.

The present invention has been described above based on the various embodiments described above, but the present invention is not limited to the embodiments described above, and various modifications can be made.

For example, the barrier diffusion portions 55a and 55b may be formed on the side of the back surface 51a or may be penetrated. A hole is formed in the light distribution plate 51.

The number, shape, or/and the position of the diffusion preventing portion at the light distribution plate 51 may be changed. For example, the shape of the obstruction diffusion portion may be formed into a linear shape, or only one of the obstruction diffusion portions may be located on a straight line connecting the one long side 51L of the light distribution plate 51 and the fitting hole 54.

At least a portion of the illumination light incident member 76 (e.g., a portion corresponding to the incident portion 78) may also be made of metal.

At least a part of the illumination light incident member 76 (for example, a portion corresponding to the incident portion 78) and the light distribution plate 51 may be integrally molded. However, at this time, it is preferable that the portion corresponding to the illumination light incident member 76 has a lower transmittance than the other portion of the light distribution plate 51. Further, when the illumination light incident member 76 and the light distribution plate 51 are separated or integrated, the front end surface (conical surface) of the incident portion 78 may be subjected to reflection coating (for example, a metal film). Further, the shape of the front end surface of the incident portion 78 may be another shape (for example, a quadrangular pyramid) as long as it can reflect the shape of the incident illumination light in the orthogonal direction. Further, by placing the front end surface of the incident portion 78 on the side of the surface 51b of the light distribution plate 51, a conical concave portion 73 is formed on the surface 51b side, and the front end surface of the incident portion 78 can be reflected on the inner side of the light distribution plate 51. The light is emitted from the side of the back surface 51a toward the outside of the light distribution plate 51.

The conical recessed portion 73 may be changed to another shape (for example, a quadrangular pyramid-shaped recessed portion) in which illumination light that is diffused inside the light distribution plate 51 and reflected toward one side of the front surface 51b and the rear surface 51a.

The light amount adjusting member 84 may be formed of a material other than metal. However, at this time, at least the surface opposite to the illumination light incident member 76 needs to have a lower light transmittance than the illumination light incident member 76 (for example, substantially the entire light amount adjustment member 84 is formed by the (light permeable) transparent material, The opposite side of the light amount adjusting member 84 to the illumination light incident member 76 is formed by reflection coating of a material (for example, metal) having a lower transmittance than the illumination light incident member 76.

Moreover, the amount of illumination light of the transmitted light amount adjusting member 84 can be increased (adjusted) by forming one or a plurality of through holes penetrating the light amount adjusting member 84 in the thickness direction of the light distribution plate 51 in the light amount adjusting member 84.

The light amount adjustment plate 86 can also be omitted.

It is also possible to have three small screws (female threaded holes 70) located outside the above-mentioned small screws (female threaded holes 70) adjacent to the above-mentioned triangular region, and short sides 51S or/and long sides 51L located near the small screws. In the inter-region, a conical recess 73 is provided at a high density.

A reflective material (for example, coating or pasting) may be provided on the short side 51S of the light distribution plate 51 or the side surface (outer peripheral surface) of the long side 51L, or a concave portion similar to the shape of the conical recessed portion 73 may be formed in these portions. In this manner, the illumination light leaking from the short side 51S or the long side 51L side surface (outer peripheral surface) to the outside through the inside of the light distribution plate 51 can be reflected inside the light distribution plate 51 by the reflective material, or can be reflected by the concave portion. The inner side of the light distribution plate 51. Therefore, since the illumination light can be reduced from the short side 51S or the long side 51L side surface (outer peripheral surface), the amount of illumination light emitted from the light distribution means 50 can be increased.

The shape of the front surface of the light distribution plate 51 may be a shape other than a rectangle. Further, the lighting fixture 15 (light distribution plate 51) is used as a light source (backlight) for the liquid crystal panel 11, and is used, for example, as a general lighting fixture.

Further, the light source of the lighting fixture 15 may be other than the LED module 20 (LED 23) (for example, an organic electroluminescence (organic EL), a fluorescent lamp, or the like).

The twenty-sixth embodiment shows another embodiment of the meshing portion retreating portion of the temperature lowering device (base member) 28. In the other embodiment, the support protrusion (engagement portion, engagement pin) 58 of the light distribution plate (light distribution member) 51 and the mounting through hole 27' of the LED holder (resin molding portion) 21, The engaging hole 29D or the engaging hole 29E of the conductive plate (conducting member) 29 is engaged, and is further retracted (to escape) the recessed portion (engagement portion retracting portion) 28D of the cooling device (base member) 28.

The twenty-seventh drawing shows still another embodiment of the engaging portion retreating portion of the cooling device (base member) 28. In addition, the support protrusion (engagement portion, engagement pin) 58 of the light distribution plate (light distribution member) 51, the mounting through hole 27' for the LED holder (resin molding portion) 21, and the conduction plate (the conduction member) The engaging hole 29D of the 29 or the engaging hole 29E is engaged, and is further retracted (to escape) the through hole (engagement portion retracting portion) 28E of the cooling device (base member) 28.

The twenty-eighthth embodiment shows still another embodiment of the meshing portion retreating portion of the temperature lowering device (base member) 28. In addition, the support projections (engagement portion, engagement pin) 58 of the light distribution plate (light distribution member) 51, the attachment recess 27 for the LED holder (resin molding portion) 21, and the conduction plate (conduction member) 29 are provided. The engaging hole 29D or the engaging hole 29E is engaged with each other, and further faces the engaging portion opposing portion (the engaging portion withdrawing portion) 28F of the temperature lowering device (base member) 28. The engagement portion facing portion 28F enters the inside of the mounting recess 27 of the LED holder (resin molding portion) 21 as a double bottom portion overlapping the bottom portion of the mounting recess portion 27, and supports projections of the light distribution plate (light distribution member) 51. (Meshing portion, engaging pin) 58 are opposed to each other.

The twenty-ninth embodiment shows still another embodiment of the meshing portion retreating portion of the temperature lowering device (base member) 28. In still another embodiment, in the configuration of the twenty-ninth embodiment, the upper rising wall 28F1 is formed at the end of the engaging portion opposing portion 28F which is superposed on the bottom of the mounting recess 27, and the upper rising wall 28F1 is inserted for mounting. The side wall of the recess 27.

In the twenty-eighth and twenty-ninth drawings, the temperature lowering device (base member) 28 constitutes a part of the mounting recess 27 of the LED holder (resin molding portion) 21. Further, in the twenty-eighth and twenty-ninth drawings, a holder for replacing the LED (resin molding portion) 21 may be employed. The mounting through hole 27 is provided in the mounting recess 27 and the mounting through hole 27' is provided. At this time, the temperature lowering device (base member) 28 has the engaging portion opposing portion 28F for bottoming the mounting through hole 27', and the raised wall 28F1 formed above the end portion of the engaging portion opposing portion 28F can constitute the LED A part of the through hole 27' for mounting of the holder (resin molding portion) 21.

[Industrial Availability]

The light distribution means and the lighting fixture of the present invention are suitably used for a light distribution means such as a semiconductor light emitting element (LED) and a lighting fixture.

20‧‧‧LED module

21‧‧‧LED Holder

51‧‧‧Lighting board

51a‧‧‧Back

51b‧‧‧ surface

53‧‧‧The opposite side of the peripheral side

54‧‧‧ fitting holes

55a‧‧ ‧ Obstruction of the Department of Proliferation

56‧‧‧Installation recess

57‧‧‧LED module support

59‧‧‧Locating pin

70‧‧‧Female threaded holes

71‧‧‧Cylinder

77‧‧‧锷

78‧‧‧Injection

82‧‧‧Installation feet

84‧‧‧Light quantity adjustment component

86‧‧‧Light adjustment plate

90‧‧‧Small screws

93‧‧‧Lighting control unit

Claims (22)

A light distribution means is a flat light distribution plate that diffuses illumination light that is incident on an incident portion toward an outer peripheral surface side and is emitted toward the outside, and is provided with a light amount adjustment member that is positioned to sandwich the incident portion. The light source is opposite to the light source, and at least the incident portion side faces the illumination light having a lower transmittance than the incident portion. The light distribution means according to claim 1, wherein the light distribution plate includes a fitting hole, and the incident portion is formed of a different member from the light distribution plate, and the fitting hole can be embedded Hehe. The light distribution means according to claim 2, wherein the light amount adjusting member is made of metal. The light distribution means according to any one of claims 1 to 3, wherein the light amount adjusting member includes a through hole penetrating the light amount adjusting member in a thickness direction of the light distribution plate. The light distribution means according to any one of claims 1 to 4, wherein a light amount adjusting plate is provided on a side opposite to the light amount adjusting member and the incident portion, and the illumination light is diffused and emitted to the incident portion Opposite side. A lighting device, comprising: the light distribution means according to any one of claims 1 to 5; and the light source. In the lighting fixture of the sixth aspect of the invention, the light source is located on the inner peripheral side of the outer peripheral portion of the incident portion when viewed from the thickness direction of the light distribution plate. The lighting fixture of claim 6 or 7, wherein the light source comprises: a semiconductor light emitting element; a base member having a mounting surface on which the semiconductor light emitting element is mounted; and a resin molded portion that is coupled to the base member and has a concave portion or a through hole for mounting a light distribution member on an outer peripheral side of the mounting surface. a meshing portion that engages a light distribution member that distributes light emitted from the semiconductor light emitting element; the base member includes an engagement portion retreating portion that engages a concave portion or a through portion of the light distribution member that is engaged with the resin molded portion The aforementioned engaging portion of the light distribution member of the hole is retracted. The lighting fixture of claim 8, wherein the engaging portion of the base member is formed by a cutout portion for retreating. A lighting fixture according to claim 9, wherein the recessed portion of the base member forms an R shape that opens a part of a peripheral edge of the base member. The lighting fixture of claim 8, wherein the engaging portion retreating portion of the base member is constituted by a recess for recessing. The lighting fixture of claim 8, wherein the engaging portion of the base member is formed by a through hole for retreating. The illuminating device according to claim 8, wherein the engaging portion retreating portion of the base member has an engaging portion opposing portion that enters a recess or a through hole for mounting the light distributing member of the resin forming portion, and Opposes the aforementioned meshing portion of the light distribution member. The lighting fixture of claim 13, wherein the engaging portion opposing portion of the base member is a double bottom portion overlapping a concave portion for mounting the light distribution member of the resin molded portion, and the meshing member is engaged with the light distributing member Relative. A lighting fixture according to any one of claims 8 to 14, wherein the aforementioned base member The combined body with the resin molded portion is formed into a substantially rectangular shape when viewed in plan, and the concave portion or the through hole for mounting the light distribution member in the resin molded portion and the meshing portion retreating portion of the base member are attached to the plan view. A position where the peripheral portions of the rectangle correspond to each other. The lighting fixture according to any one of claims 8 to 15, further comprising the light distribution member, wherein the light distribution member of the semiconductor light emitting element is light-distributed, and the light distribution member of the resin molding portion The engaging portion for mounting or the aforementioned engaging portion that the through hole engages. The lighting fixture of claim 16, wherein the light distribution member shapes the base member and the resin by engaging the engaging portion with a concave portion or a through hole for mounting the light distribution member of the resin molded portion. The combination of the parts. The luminaire of claim 16 or 17, wherein the resin molding portion has a connector accommodating portion that houses a connector that is electrically connected to the semiconductor light-emitting device from the outside and has a fixing hole, and the light distribution member has The positioning pin is positioned to engage the connector by engaging with the fixing hole of the connector housed in the connector housing portion. The lighting fixture according to any one of claims 16 to 18, wherein the light distribution member has a mallet-shaped support portion formed with an end contact surface before contact with an opposite surface of the floor member stacked on the lighting fixture. The lighting fixture according to any one of claims 16 to 19, wherein the light distribution member has a cylindrical protrusion formed with a front end contact surface in contact with an opposite surface of the bottom plate member stacked on the lighting fixture, the foregoing a mother formed on the front end contact surface of the cylindrical protrusion a threaded hole is formed with a through hole for a screw on the opposing surface of the bottom plate member, and is inserted into the aforementioned side of the bottom plate member from the opposite side of the bottom plate member in a state in which the female screw hole and the through hole for the screw are aligned The small screw is screwed to the female screw hole by a small screw of the through hole, and the lighting fixture and the bottom plate member are fixed in a stacked state. The lighting fixture according to any one of claims 16 to 20, wherein the resin molded portion has at least two connector accommodating portions for accommodating at least two connectors that are electrically connected to the semiconductor light-emitting device from the outside, and accommodates The at least two connectors of the at least two connector accommodating portions are disposed such that at least two cables connected to the at least two connectors extend in different directions. The lighting fixture of claim 21, wherein the extending directions of the at least two cables are orthogonal to each other.