JP2014146563A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which improves heat radiation characteristic of a light source unit for indirect illumination during light emission.SOLUTION: A lighting device 1 includes: a device body 3 which is attached so that its rear surface faces a construction material forming a space therebetween; and a light source unit 10 for indirect illumination which is provided on the rear surface of the device body 3. The light source unit 10 includes: a plate-like base part 185 which is attached to the rear surface of the device body 3; a substrate placed on the base part 185; multiple semiconductor light emitting elements mounted on the substrate; and a reflection part 186 which reflects light emitted from the semiconductor light emitting elements to allow the light to travel along one surface of the construction material. A main surface of the base part 185 contacts with a main surface of the substrate.

Description

  The present invention relates to a lighting device whose rear surface is attached to a construction material.

An LED, which is one of semiconductor light emitting elements, has advantages such as long life, small size, good luminous efficiency, and vivid emission color, and is widely used in lighting devices and the like. As one of such lighting devices, for example, there is a so-called ceiling light in which an instrument body is attached to a ceiling which is an example of a construction material.
In recent years, high-additional products of ceiling lights include those having an indirect illumination function that also illuminates the ceiling on which the ceiling lights are attached and the surrounding walls (for example, Patent Document 1).

The illumination apparatus described in Patent Document 1 includes a front illumination light source unit that irradiates the front of the instrument body on the front, and an indirect illumination light source unit that irradiates the rear and sides of the apparatus on the back of the instrument body. Prepare.
The light source unit for indirect illumination includes a long board, a plurality of LEDs mounted on one main surface of the board, and a mounting member for mounting the board on the instrument body. The mounting member has an “L” shape having plate portions orthogonal to each other in the cross section, and the substrate is mounted on one plate portion, and the other plate portion is mounted on the instrument body.

JP 2012-164625 A

However, the configuration of the lighting device has a problem that it cannot cope with the recent increase in luminance.
In other words, if the number of LEDs and the input current to the LEDs are increased in response to the increase in brightness, the heat generated during the light emission of the LEDs is not sufficiently released, and the LED temperature rises and the light emission efficiency decreases. It will end up.

  An object of this invention is to provide the illuminating device which can improve the thermal radiation characteristic in light emission of the light source unit for indirect illumination in view of an above-described subject.

  In order to achieve the above object, an illumination device according to an aspect of the present invention is provided on an instrument body that is mounted in a state where the back surface is opposed to the construction material with a space therebetween, and the back surface of the instrument body. A light source unit for indirect illumination, and the light source unit includes a plate-like base portion attached to the back surface of the instrument body, a substrate placed on the base portion, and a plurality of devices mounted on the substrate. And a reflecting part that reflects light emitted from the semiconductor light emitting element and travels along one surface of the construction material, wherein the main surface of the base part and the main surface of the substrate are in contact with each other It is characterized by that. Here, “along one surface” is a concept including both directions parallel to one surface and directions intersecting one surface.

  An illumination device according to an aspect of the present invention includes an appliance main body mounted with a back surface facing the construction material with a space therebetween, and a light source unit for indirect illumination provided on the back surface of the appliance main body. A lighting circuit unit for the light source unit provided on the back surface of the fixture body, and a circuit cover provided on the back surface of the fixture body and covering the lighting circuit unit, the circuit cover comprising a bottomed cylinder A cover body having a shape, and an outer flange portion that projects outwardly from the opening side end of the cover body along the back surface of the instrument body and is attached to the back surface, and the light source unit is A plate-like base portion attached to at least one of a back surface of the instrument body and a back surface of the outer cover of the circuit cover, a substrate placed on the base portion, and a plurality of semiconductors mounted on the substrate A light emitting element and the half A reflecting portion that reflects light emitted from the body light emitting element and travels along one surface of the construction material, wherein the main surface of the base portion and the main surface of the substrate are in contact with each other Yes. Here, “along one surface” is a concept including both directions parallel to one surface and directions intersecting one surface.

  Further, a lighting circuit unit for the light source unit and a circuit cover that covers the lighting circuit unit are provided on the back surface of the fixture body, and a part of the base portion is in contact with the circuit cover. It is a feature. Alternatively, the base part and the reflection part are configured by one member, and the reflection part is erected from a peripheral edge located on the center side of the instrument body in the base part, and the center side of the instrument body in the standing part The surface on the opposite side is a reflective surface.

  Further, the plurality of semiconductor light emitting elements are constituted by a plurality of types of elements having different color temperatures. Or it has the other light source unit which irradiates the opposite side to the said construction material on the surface on the opposite side to the said construction material in the said instrument main body.

  In the lighting device according to one embodiment of the present invention, the base portion on which the substrate is placed is attached to the back surface of the instrument body or the circuit cover, and the main surface of the base portion and the main surface of the substrate are in contact with each other. In this configuration, the heat transfer path from the substrate to the instrument main body is, for example, from the heat transfer path from the substrate to the instrument main body when using the mounting member whose cross-sectional shape is “L” described in the background art. Shorter. Thereby, the heat generated by the light emission of the semiconductor light emitting element is efficiently conducted from the substrate to the instrument body, and the heat dissipation characteristics are improved. Therefore, the number of semiconductor light emitting elements and the input current to the semiconductor light emitting elements can be increased corresponding to the increase in luminance.

It is the perspective view of the illuminating device which concerns on embodiment, (a) is the figure seen from the front, (b) is the figure seen from back. Sectional view of the left half with the lighting device facing backward A perspective view with the cover removed and the front facing backwards The perspective view of the state which removed the outer side optical member, the inner side optical member, etc. from the state of FIG. A perspective view with the light source unit removed from the instrument body and the front of the instrument body facing backwards The figure which expanded the center part in FIG. The figure which expanded the A section of FIG. Perspective view with the inner optical member cut in half and the back facing backward Enlarged view of the outer light source unit The figure which expanded the B section of FIG. The figure which expanded the C section of Drawing 9 Perspective view of upper cover The perspective view which looked at the state which removed the upper cover from the upper part An exploded perspective view of a rear member provided on the instrument body Cross section of indirect light source unit Front view of indirect light source unit The figure which shows the mounting state of the indirect light source unit The perspective view of the state which is the illuminating device which concerns on 2nd Embodiment, and removed the upper cover An exploded perspective view of a rear member provided on the instrument body Expanded cross section around the indirect light source unit The surrounding enlarged view of the indirect light source unit which concerns on the modification 1

<Embodiment>
Hereinafter, a lighting device according to one embodiment of the present invention will be described with reference to the drawings. In addition, the scale of the member in each drawing has a different location from an actual thing.
The lighting device 1 is a so-called ceiling light that can be detachably mounted on a ceiling. When the lighting device 1 is viewed from the floor, the side that can be seen is the front side of the lighting device 1, and the side that is not visible is the rear side of the lighting device 1. In the lighting device 1, the front-rear direction refers to a direction perpendicular to the surface of the ceiling where the lighting device 1 is mounted, “front” refers to the side with the floor, and “rear” refers to the side with the ceiling.

Further, when the illuminating device 1 is viewed from the front-rear direction and passes through the center of the illuminating device 1 and the imaginary axis extending in the front-rear direction is the central axis, and simply referred to as the central axis, it indicates the central axis of the illuminating device 1 And
1. 1 is a perspective view of a lighting device 1 according to an embodiment, (a) is a view seen from the front, and (b) is a view seen from the rear. FIG. 2 is a cross-sectional view of the left half of the lighting device 1 facing backward. FIG. 3 is a perspective view of the state where the cover 9 is removed and the front surface is directed rearward.

  As shown in FIGS. 1 and 2, the illumination device 1 mainly includes a dish-shaped instrument body 3, two light source units 5 and 7 provided on the front surface of the instrument body 3, and two light source units. 5 and 7, a cover 9 mounted on the front surface of the instrument body 3, a light source unit 10 (see FIGS. 13 and 14) provided on the back surface of the instrument body 3, and for the light source units 5, 7 and 10 Lighting circuit unit 11 (see FIG. 14), a circuit cover 12 mounted on the back surface of the instrument body 3 in a state of covering the lighting circuit unit 11, and a back surface of the instrument body 3 so as to cover the light source unit 10. And a cover 13.

Although not illustrated, the illuminating device 1 is detachably attached to a ceiling ceiling ceiling via an adapter 14. As shown in FIG. 2, the adapter 14 is detachably attached to the circuit cover 12.
Although the cover 9 can be said to be a “lower cover” in relation to the upper cover 13, the “lower” representing the vertical positional relationship is omitted because the illumination device 1 is a device whose main function is to irradiate downward. ing. In addition, the upper cover 13 is a ceiling light mounted on the ceiling and has an upper and lower concept as the lighting device 1. Therefore, the upper cover is, for example, based on the front and back of the fixture body 3. In other words, the (lower) cover can be said to be a front cover.
2. FIG. 4 is a perspective view showing a state in which the outer optical member 25, the inner optical member 19 and the like are removed from the state shown in FIG.

  The instrument body 3 has a plate shape having a through-hole 3a penetrating in the front-rear direction. The through-hole 3a is used for positioning the device itself when the device (the instrument body 3) is attached to the hooking ceiling. As shown in FIG. 3, the two light source units 5 and 7 are disposed on the front surface of the instrument body 3 and on the outer side of the inner light source unit 5 and the annular inner light source unit 5 disposed around the through-hole 3 a. An annular outer light source unit 7.

  The inner light source unit 5 includes an inner light emitting module 17 in which a plurality of LEDs are annularly arranged as shown in FIG. 4, and an annular inner optical member 19 that covers the inner light emitting module 17 as shown in FIG. The outer light source unit 7 includes an outer light emitting module 23 in which a plurality of LEDs are arranged in a ring shape as shown in FIG. 4 and an opening that covers the outer light emitting module 23 and corresponds to the inner light source unit 5 as shown in FIG. And an outer optical member 25 at the center.

Between the inner light source unit 5 and the outer light source unit 7, an auxiliary function unit 26 that assists the functions of the light source units 5, 7, and 10 is provided.
Two types of mounting members 27 and 29 for mounting the cover 9 are attached around the outer periphery of the instrument body 3. As shown in FIG. 2, an umbrella member 31 that extends obliquely rearward from the outer peripheral edge of the instrument main body 3 is attached to the outer peripheral edge of the instrument main body 3.

Each configuration will be described below.
(1) Instrument main body FIG. 5: is a perspective view in the state which removed the light source units 5 and 7 from the instrument main body 3, and turned the front surface back.
The instrument main body 3 has a disk shape as shown in FIG. The instrument body 3 includes an annular first flat portion 47 positioned around the outside of the through hole 3 a, an annular second flat portion 49 positioned on the outer peripheral side of the first flat portion 47, and an outer periphery of the second flat portion 49. And an annular third flat portion 51 located on the side.

Here, the first flat portion 47, the second flat portion 49, and the third flat portion 51 are stepped back in this order (the first flat portion 47 is located at the highest position with reference to the third flat portion 51). (Front side).
The inner light source unit 5 is attached to the inner peripheral portion of the first flat portion 47, and the outer light source unit 7 is attached to the outer peripheral portion of the first flat portion 47 and the second flat portion 49. Further, the mounting members 27 and 29 are mounted on the third flat portion 51.

As shown in FIG. 5, a through hole 3 b for the auxiliary function unit 26 exists in the first flat portion 47 of the instrument body 3. In the auxiliary function unit 26, a circuit or the like is arranged in the casing as shown in FIG. 14, and a button or the like protruding from the casing passes through the through-hole 3b, and as shown in FIG. It is exposed on the front side.
As shown in FIGS. 2 and 5, the outer peripheral portion 55 of the third flat portion 51 in the instrument main body 3 is folded back to the front side, and the tip portion 55 a is rounded. In addition, by rounding the front end portion 55a, when the cover 9 is mounted on the instrument main body 3, it is possible to lose a person's finger coming into contact with the front end portion 55a and being injured.

The instrument body 3 is provided with through holes and screw holes for mounting the outer / inner light source units 5 and 7, the mounting members 27 and 29, the umbrella member 31, and the like.
(2) Inner Light Source Unit FIG. 6 is an enlarged view of the central portion in FIG. FIG. 7 is an enlarged view of part A in FIG.

As shown in FIGS. 4 and 7, the inner light source unit 5 includes an inner light emitting module 17 placed on the front surface of the instrument main body 3 and an inner optical unit fixed to the instrument main body 3 so as to press the inner light emitting module 17. And a member 19.
The inner optical member 19 changes the trajectory of light emitted from the inner light emitting module 17 so that light is emitted from the inner light source unit 5 in a predetermined direction. The inner light source unit 5 has a nightlight 65 on the substrate 61 as shown in FIG.
(2-1) Inner Light Emitting Module As shown in FIGS. 4 and 7, the inner light emitting module 17 includes a substrate 61 and LEDs mounted on the substrate 61. As shown in FIG. 4, the substrate 61 has an annular shape as a whole. The substrate 61 is composed of one insulating plate, and a wiring pattern that is electrically connected to the LEDs is formed on the front surface thereof.

Here, the LED is used as a so-called SMD (Surface Mount Device) 63. In the SMD 63, a plurality of LEDs are mounted on one substrate, and all the mounted LEDs are collectively sealed with a sealing material and packaged.
The SMD 63 is mounted at equal intervals in the circumferential direction on a virtual circumferential line existing on the annular substrate 61 with the main emission direction of the LEDs constituting the SMD 63 oriented in a direction parallel to the central axis. The sealing material is made of, for example, a resin material. When it is necessary to convert the wavelength emitted from the LED, a wavelength conversion member such as phosphor particles is mixed in the resin material.
(2-2) Inner Optical Member FIG. 8 is a perspective view in which the inner optical member 19 is cut in half and the back surface is directed rearward.

The inner optical member 19 changes the traveling direction of the light emitted from the inner light emitting module 17 by refraction. As shown in FIG. 6, the inner optical member 19 has an annular plate shape having a through hole in the center as a whole shape in accordance with the shape of the inner light emitting module 17.
When viewed from the front, the inner optical member 19 has a central portion 19a that is continuously raised in the circumferential direction. As shown in FIG. 7, the SMD 63 of the inner light emitting module 17 is disposed inside the central portion 19 a of the inner optical member 19. A refracting lens portion 69 is formed by the raised portion.

  As shown in FIG. 8, the inner optical member 19 includes an inner portion 77 located inside the refractive lens portion 69 and an outer portion 79 located outside the refractive lens portion 69. The inner portion 77 and the outer portion 79 have a through-hole 81 that penetrates in the thickness direction in accordance with the position of the screw hole 85 of the instrument body 3. As a result, the fixing screw 83 inserted through the through hole 81 is screwed into the screw hole 85 of the instrument body 3 (see FIGS. 5 and 6), and the inner optical member 19 is attached to the instrument body 3.

As shown in FIG. 8, the inner optical member 19 has a bulged portion 87 having a hollow inside, and a connector for connecting the nightlight 65 and the lighting circuit unit 11 to the inner optical member 19 as shown in FIG. 67 etc. are accommodated.
The inner optical member 19 has a sealed structure for preventing the inner light emitting module 17 from being exposed to the atmosphere. Specifically, as shown in FIG. 7, the ring packing 88 is used, and packing grooves 76 a and 76 b for the ring packing 88 are provided at two locations of the outer portion 79 and the inner portion 77 in the inner optical member 19. Yes.
(3) Outer Light Source Unit FIG. 9 is an enlarged view of the outer light source unit, FIG. 10 is an enlarged view of a portion B in FIG. 9, and FIG. 11 is an enlarged view of a portion C in FIG.

As shown in FIGS. 4 and 9, the outer light source unit 7 extends between the outer light emitting module 23 placed on the front surface of the instrument body 3 and the position near the inner light source unit 5 from the outer position of the outer light emitting module 23. And an outer optical member 25 disposed on the outer side.
As shown in FIGS. 3 and 9, the outer peripheral edge of the outer optical member 25 is pressed against the front surface of the instrument body 3 by the outer pressing member 93, and the inner peripheral edge is pressed against the front surface of the instrument body 3 by the inner pressing member 95. Thus, it is attached to the instrument body 3.
(3-1) Outside Light Emitting Module As shown in FIG. 4, the outside light emitting module 23 includes a substrate 97 and LEDs mounted on the substrate 97. Here, as shown in FIG. 4, there are a plurality (four) of the outer light emitting modules 23. When all these outer light emitting modules 23 are arranged on the instrument main body 3, an annular shape is formed as an overall shape.

The substrate 97 includes one insulating plate and a wiring pattern (not shown) formed on the front surface of the insulating plate. Each substrate 97 constitutes an annular part (one quarter). For this reason, when it demonstrates using the circumferential direction and radial direction about each board | substrate 97, it is the same direction as the circumferential direction and radial direction in the cyclic | annular form formed by arranging the four board | substrates 97. FIG.
SMD99 is used for LED similarly to the inner light source unit 5. The plurality of SMDs 99 are mounted at equal intervals in the circumferential direction on a virtual circumferential line (not shown) virtual on each substrate 97 with the main emission direction of the LED in a direction parallel to the central axis. Yes.

As shown in FIG. 4, each of the substrates 97 is provided with connection connectors 101 and 103 that connect the substrates 97 adjacent in the circumferential direction when arranged in a ring shape. In addition, illustration of the wiring which connects the connection connectors 101 and 103 of the board | substrate 97 which adjoins is abbreviate | omitted.
(3-2) Outer Optical Member The outer optical member 25 causes the light emitted from the outer light emitting module 23 to enter from the incident surface, and emits the light forward to the vicinity of the inner light source unit 5. The outer optical member 25 is made of a resin material, and is formed by, for example, injection molding.

The inner light source unit 5 and the through-hole 3a exist in the center of the instrument body 3. Therefore, the outer optical member 25 has a through hole 110 corresponding to the inner light source unit 5 of the instrument main body 3 as shown in FIG. 3 and the like, and has a flat annular shape as a whole.
As shown in FIG. 9, the outer optical member 25 includes a first annular plate portion 111 extending in parallel along the first flat portion 47 and a second annular ring extending in parallel along the second flat portion 49. It has the board part 113, and the connection board part 115 which connects the 1st ring board part 111 and the 2nd ring board part 113. FIG. Here, the thickness of the 1st ring board part 111, the 2nd ring board part 113, and the connection board part 115 is substantially the same.

  The second flat part 49 is lower than the first flat part 47. For this reason, as shown in FIG. 10, the connecting plate portion 115 is curved in an arc shape from the outer peripheral end of the first annular plate portion 111 to the inner peripheral end of the second annular plate portion 113. And the connection connectors 101 and 103 which connect the board | substrates 97 are accommodated in the space 125 between the 1st annular plate part 111 and the 2nd flat part 49 of the instrument main body 3. FIG.

As shown in FIG. 10, the outer optical member 25 includes an incident portion 117 into which light from the outer light emitting module 23 is incident, a light guide portion 119 that guides the incident light, and an output that emits the guided light. This is a so-called light guide plate having a portion 121.
As shown in FIG. 10, the outer optical member 25 has a mounting portion 127 for mounting to the instrument body 3. The mounting portion 127 is formed at a position close to the outer peripheral edge of the outer light emitting module 23. Here, it is constituted by a through hole 127 a formed in an outer portion than the outer light source unit 7.

The outer optical member 25 has a sealed structure for preventing the outer light emitting module 23 from being exposed to the atmosphere. Specifically, as shown in FIGS. 9 to 11, the ring packing 126 is used, and the packing grooves 128 a and 128 b for the ring packing 126 are close to the outer peripheral edge and the inner peripheral edge of the outer optical member 25. It is provided in two places.
(3-3) Outer pressing member The outer pressing member 93 is fixed to the instrument body 3 while pressing the outer peripheral portion of the outer optical member 25 as shown in FIG. The outer pressing member 93 has a cross-sectional shape similar to that of the outer peripheral end portion of the outer optical member 25, and has an annular shape as shown in FIG. For this reason, when the outer pressing member 93 is placed on the outer peripheral portion of the outer optical member 25, most of the back surface of the outer pressing member 93 and the front surface of the outer optical member 25 come into contact with each other.

A fixing portion 129 is formed on the outer peripheral portion of the outer pressing member 93 corresponding to the mounting portion 127 of the outer optical member 25. The mounting portion 127 of the outer optical member 25 and the fixing portion 129 of the outer pressing member 93 have through holes 127a and 129a. A screw member 131 that passes through the through holes 127a and 129a and the through hole 133 of the instrument body 3 is screwed into the screw member 132 on the circuit cover 12 side. Thereby, the outer peripheral part of the outer side optical member 25 and the outer side pressing member 93 are fixed to the instrument main body 3 (circuit cover 12).
(3-4) Inner pressing member The inner pressing member 95 is fixed to the instrument body 3 with the front surface of the inner peripheral end of the outer optical member 25 pressed from the cover 9 side, as shown in FIG. The inner pressing member 95 has a cross-sectional shape similar to that of the inner peripheral end portion of the outer optical member 25 and has an annular shape as a whole.

The inner pressing member 95 is a standing wall 95a erected with respect to the first flat portion 47 of the instrument body 3, and before projecting from the front end of the standing wall 95a to the front surface of the inner peripheral end of the outer optical member 25. A wall 95b is provided over the entire circumference. That is, the cross-sectional shape of the inner pressing member 95 (the cross-section is perpendicular to the circumferential direction and is in the state shown in FIG. 11) has a shape that is the “L” shape reversed.
As shown in FIG. 11, a fixing portion 137 is formed on the inner peripheral portion of the inner pressing member 95. Here, the fixing portion 137 has a through hole 137a. A screw member 139 inserted through the through hole 137a is screwed into the screw hole 141 of the instrument body 3. Accordingly, the inner pressing member 95 that presses the inner peripheral end of the outer optical member 25 is fixed to the instrument main body 3.
(4) Auxiliary function unit The auxiliary function unit 26 is a setting switch for setting the lighting state of the reception sensor 142 and the light source units 5, 7, and 10 that receive signals from a remote controller that remotely controls lighting and extinguishing of the lighting device 1. 143 and the like.

The reception sensor 142 protrudes forward from the through hole 3b of the instrument body 3 so that a signal from a remote controller (not shown) can be received. The setting switch 143 protrudes forward from the through hole 3b of the fixture body 3 so that the setting switch 143 can be operated with the lighting device 1 mounted on the ceiling.
(5) Mounting member As shown in FIGS. 3 and 4, the mounting member is a first mounting member 27 that prevents the cover 9 from dropping and rotating, and a second mounting member 29 that prevents the cover 9 from falling. There are types. Each of the first mounting member 27 and the second mounting member 29 is four.

As shown in FIGS. 3 and 4, the first mounting member 27 extends along the circumferential direction of the instrument main body 3, and has a main body 145 whose cross-sectional shape is “U”, and a main body 145. And a lid portion 147 for closing one end portion in the circumferential direction. It should be noted that the rear side of the main body portion 145 is attached in contact with the instrument main body 3.
The main body portion 145 is fitted with the protruding portion 171 at the peripheral edge of the cover 9, and the lid portion 147 contacts the protruding portion 171 of the cover 9 when the cover 9 rotates in one direction. Thereby, rotation of the cover 9 is regulated.

As shown in FIGS. 3 and 4, the second mounting member 29 has a main body portion 149 and a locking portion 151. The main body 149 is attached to the instrument main body 3. The locking portion 151 extends in a bowl shape from the front side of the main body portion 149. A protruding portion 171 at the end of the cover 9 fits between the front surface of the instrument body 3 and the locking portion 151. Thereby, the protruding portion 171 of the cover 9 is locked (latched) by the locking portion 151.
(6) Umbrella Member The umbrella member 31 is attached to the outer peripheral edge of the instrument body 3 as shown in FIGS. As shown in FIG. 2, the umbrella member 31 includes an L-shaped portion 155 having an “L” shape and a curved portion 157 that is curved in an arc shape. The umbrella member 31 has a function of preventing dust from adhering to the cover 9.

One end portion of the L-shaped portion 155 is fixed to the back surface of the outer peripheral end of the instrument body 3. The curved portion 157 is curved so that the center exists on the front side, and one end of the curved portion 157 is connected to the other end of the L-shaped portion 155. As shown in FIG. 2, one end of the curved portion 157 is present at a position slightly shifted to the central axis side from the outer peripheral edge of the cover 9 when the cover 9 is attached to the instrument body 3. Thereby, the outer peripheral part 55 of the instrument main body 3 is hidden by the umbrella member 31 and the cover 9.
(7) Cover FIG. 12 is a perspective view of the cover 9, (a) is a perspective view of the state where the front surface is directed rearward, and (b) is a state where the rear surface is directed rearward. It is the perspective view seen from back.

In addition, in FIG. 12, the line extended | stretched to radial direction is described so that the curve state may be understood since the cover is curvilinear and dome shape.
As shown in FIG. 12, the cover 9 includes a main body portion 161 that covers the front side of the instrument main body 3 and a mounting portion 163 for mounting on the instrument main body 3. The main body 161 has a flat portion 165 formed at a portion facing the inner light source unit 5 and the through-hole 3 a and a curved portion 167 formed at a portion facing the outer light source unit 7.
3. FIG. 13 is a perspective view of a state in which the upper cover 13 is removed from the lighting device 1 as viewed from above, and FIG. 14 is an exploded perspective view of a rear member provided on the instrument body 3.

  As shown in FIGS. 13 and 14, the lighting circuit unit 11 is arranged at the center of the back surface of the instrument body 3. The lighting circuit unit 11 is covered with a circuit cover 12 via an insulating member 179. An indirect light source unit 10 is provided around the outside of the circuit cover 12. Here, there are a plurality (four) of indirect light source units 10, and an upper cover 13 is provided to cover them together.

FIG. 13 is a perspective view of the lighting device 1 with the upper cover 13 removed from above, and FIG. 14 is an exploded perspective view of the back side member provided in the instrument body 3.
On the rear surface of the instrument body 3, a lighting circuit unit 11 is arranged at the center. The lighting circuit unit 11 is covered with a circuit cover 12 via an insulating member 179. An indirect light source unit 10 is provided around the outside of the circuit cover 12. Here, there are a plurality of indirect light source units 10 (specifically, four), and an upper cover 13 is provided to cover them together.

Each configuration will be described below.
(1) Lighting circuit unit The lighting circuit unit 11 mainly has a function of supplying power to the inner and outer light source units 5 and 7 and the indirect light source unit 10. The lighting circuit unit 11 also has other functions as necessary. For example, the lighting circuit unit 11 has a function of supplying power to the auxiliary function unit 26 when the auxiliary function unit 26 is provided in the instrument body 3 and the lighting state of each of the light source units 5, 7, 10 (for example, dimming, In the case where the lighting device 1 has the adjustment function of color matching), the lighting device 1 also has a function of controlling the lighting state.

The lighting circuit unit 11 includes a circuit board 175 and a plurality of electronic components 176 mounted on the circuit board 175. Each function of the lighting circuit unit 11 is implemented by an electronic circuit using various electronic components.
The electronic component 176 includes, for example, a diode bridge for a rectifier circuit, an electrolytic capacitor for a smoothing circuit, and an IC circuit in which a program for switching a lighting mode is stored. The lighting circuit unit 11 is electrically connected to the ceiling ceiling ceiling via the adapter 14.

The circuit board 175 has a wiring pattern for electrically connecting a plurality of electronic components to form a circuit on the main surface (here, both main surfaces) of the insulating plate. When viewed from the rear, the circuit board 175 has a horseshoe (U shape) shape that is cut from one end to the center. The notched portion of the circuit board 175 is referred to as a notched portion 175a.
As shown in FIG. 14, an auxiliary function unit 26 to be described later is arranged in the notch 175 a of the circuit board 175, and the notch 175 a corresponds to the through-hole 3 a of the instrument body 3, and the notch The adapter 14 is arranged at 175a. Here, as shown in FIGS. 2 and 9, the electronic component 176 is provided on the front surface of the circuit board 175.
(2) Circuit cover The circuit cover 12 has a box shape as an overall shape. Here, the circuit cover 12 includes a cover body 177 having a bottomed cylindrical shape, and an outer flange portion 178 that protrudes outward in the radial direction of the cover body 177 from the opening side end of the cover body 177. Yes.

  Here, the cover body 177 has a bottomed cylindrical shape with a circular cross section. The cover body 177 has a recessed portion 177a that is recessed in a circular shape in the center of the bottom portion, and has a through hole 177b corresponding to the through hole 3a of the instrument body 3 at the bottom of the recessed portion 177a. Yes. The outer casing 178 has mounting means for mounting the circuit cover 12 to the instrument body 3. Here, the mounting means is a through-hole 178c formed at intervals in the circumferential direction corresponding to the three through-holes 133 of the instrument body.

When the state in which the circuit cover 12 is attached to the instrument body 3 is viewed from the rear, the outer periphery of the circuit cover 12 is smaller than the outer periphery of the instrument body 3, and the outer periphery of the circuit cover 12 and the outer periphery of the instrument body 3 are The indirect light source unit 10 is disposed between the periphery.
As shown in FIG. 10, the outer flange portion 178 includes a first flange portion 178a and a second flange portion 178b in a step shape. Here, the first flange portion 178a is located on the cover body 177 side. The size of the step between the first flange portion 178 a and the second flange portion 178 b is substantially equal to the size of the step between the second flat portion 49 and the third flat portion 51 in the instrument body 3. In addition, the mechanical characteristic of the outer collar part 178 is improved by providing a step in the outer collar part 178.

  As shown in FIG. 10, the circuit cover 12 is attached to the instrument main body 3 in a state where the second flange part 178 b of the outer collar part 178 of the circuit cover 12 is in contact with the second flat part 49 of the instrument body 3. The screw member 131 (bolt) is inserted through the through hole 133 of the instrument body 3 and the through hole 178c of the outer flange portion 178 from the front side and screwed with the screw member 132 (nut). The step of the outer flange portion 178 also has a function of securing a space for accommodating the tip end portion of the screw member 132 or the screw member 131 on the screw member 132 side.

A lighting circuit unit 11 and an auxiliary function unit 26 are stored inside the circuit cover 12. The auxiliary function unit 26 has a box shape as a whole, and is arranged in a notch 175a of a circuit board 175 having a horseshoe shape as shown in FIG.
On the back surface of the circuit cover 12 (specifically, the cover main body 177), when the lighting device 1 is mounted on the ceiling, a cushioning material 173 for preventing the lighting device 1 from rattling with respect to the ceiling is provided. It is attached. Four cushion materials 173 are provided at intervals in the circumferential direction.
(3) Insulating Member As shown in FIG. 14, an insulating member 179 is disposed between the lighting circuit unit 11 and the circuit cover 12. The insulating member 179 mainly has a function of insulating the wiring pattern formed on the back surface of the circuit board 175 and the circuit cover 12. The insulating member 179 is made of an insulating material such as a resin material. The insulating member 179 has a stepped cylinder portion 179a for mounting the adapter 14 at the center.
(4) Indirect light source units As shown in FIG. 13, the four indirect light source units 10 are a plurality (four here) at intervals on the outer peripheral side of the circuit cover 12 on the back surface of the instrument body 3. ) Is provided. Here, the four indirect light source units 10 are arranged at equal intervals in the circumferential direction. Note that the number of indirect light source units 10 is not limited to four, and may be, for example, one or a plurality other than four.

FIG. 15 is a cross-sectional view of the indirect light source unit 10, and FIG. 16 is a front view of the indirect light source unit.
The indirect light source unit 10 includes a mounting member 181 for mounting on the back surface of the instrument body 3 and a light emitting module 183 mounted on the mounting member 181.
The mounting member 181 has a cross-sectional shape close to an “L” shape, and extends along the outer peripheral surface of the circuit cover 12 (in a direction perpendicular to the paper surface of FIG. 15). As shown in FIGS. 13 and 14, the mounting member 181 has a long and narrow shape in the circumferential direction when viewed from the rear. The mounting member 181 is made of, for example, a metal material, and is formed in this shape by press molding.

The mounting member 181 includes a plate-like base portion 185 and a standing portion 186 that is erected rearward from the inner peripheral end of the base portion 185. When viewed from the rear, the base portion 185 has a shape similar to a rectangle as a whole, and two sides corresponding to the long sides of the rectangle have an arc shape.
When the circuit cover 12 is viewed from the rear, the arc of the long side of the base portion 185 is centered on a virtual point that exists at or near the center of the circuit cover 12 or the instrument body 3, and an inner arc and an outer arc Is located on a concentric circle. In order to avoid interference with the mounting member 29, the arc corresponding to the outer side of the base portion 185 is notched (corresponding to the notched portion 185 a).

In addition, when the attachment member 29 does not exist in the attachment site | part to the instrument main body 3 of the indirect light source unit 10, it is not necessary to provide the notch part 185a.
The base portion 185 is provided with a configuration for mounting the indirect light source unit 10 on the instrument main body 3. This configuration is a through hole 185 b, and a plurality of through holes 185 b are provided in the base portion 185. This through hole 185 b is for the screw member 191.

The standing portion 186 is erected in an arc shape whose center is located in a region where the base portion 185 exists in the cross section. When the standing portion 186 is viewed from the rear, like the base portion 185, it is curved in an arc shape along the outer periphery of the circuit cover 12.
The inner peripheral surface of the upright portion 186 has a reflection function by mirror finishing or application of a reflective film. Thereby, the light emitted from the light emitting module 183 toward the standing portion 186 is reflected and travels along the ceiling surface. Note that the standing portion 186 also has a function of releasing heat transmitted through the base portion 185 from heat generated by the light emitting module 183 mounted on the base portion 185.

The light emitting module 183 includes a long plate-like substrate 187 and an SMD 188 mounted on the surface (main surface) of the substrate 187 at intervals in the longitudinal direction of the substrate 187.
The substrate 187 has a wiring pattern (not shown) for electrically connecting the SMD 188 in a connection form such as series connection or parallel connection on one main surface opposite to the base portion 185. The substrate 187 includes a connector 189 that is coupled to a connector (not shown) provided at an end portion of the wiring electrically connected to the lighting circuit unit 11. The connector 189 is provided at a portion near the end of the substrate 187 in the longitudinal direction.

  The light emitting module 183 is placed on the base portion 185 so as to be hidden by the curved standing portion 186 when viewed from above, that is, when viewed from the upper side of the drawing. As shown in FIG. 15, the SMD 188 is arranged on the side closer to the inner end than the approximate center of the substrate 187 in the inner and outer directions (the left and right directions in FIG. 15) in the cross section of the indirect light source unit 10. .

FIG. 17 is a diagram illustrating a mounting state of the indirect light source unit.
In the indirect light source unit 10, as shown in FIG. 17, the base portion 185 of the mounting member 181 contacts the back surface of the first flange portion 178 a of the circuit cover 12 and the back surface of the third flat portion 51 of the instrument body 3. In this state, it is fixed to the instrument body 3.
The fixing position between the base portion 185 and the instrument body 3 is outside the upper cover 13. The indirect light source unit 10 is fixed by screwing a screw member 191 inserted through a through hole 185 b provided in the base portion 185 into a screw hole of the instrument body 3.
(5) Upper cover The upper cover 13 is made of a translucent material. Specifically, a resin material is used. The upper cover 13 covers the indirect light source unit 10 and thus has a protective function for preventing foreign objects from colliding with the indirect light source unit 10 and being damaged.

In addition to the protective function, the upper cover 13 also has a dustproof function for preventing dust from adhering to the indirect light source unit 10. If necessary, the upper cover 13 may have a function of diffusing light from the indirect light source unit 10.
The upper cover 13 has a bottomed cylindrical shape having a through hole 13a at the bottom. The through hole 13a of the upper cover 13 has a size that allows the circular rear portion of the circuit cover 12 (the bottom portion of the cover main body 177) to be fitted.
4). About Indirect Light Source Unit (1) Light Irradiation Characteristics As the indirect light source unit 10, the lighting device 1 is mounted as a reflective surface that reflects the light emitted from the SMD 188 to the side, and the substrate 187 arranged in the horizontal direction. Member 181. For this reason, even if light is emitted from the light emitting module 183 toward the ceiling, the light is half-shot so as to travel to the side of the indirect light source unit 10 by the inner surface 186a of the standing portion 186 of the mounting member 181. Here, the horizontal direction is a direction parallel to the ceiling surface.

Further, the reflection surface is configured using an inner surface 186 a of the standing portion 186 of the mounting member 181. For this reason, by changing the shape of the standing portion 186, the light emission direction as the indirect light source unit 10 can be easily adjusted without changing the specification of the light emitting module 183.
The indirect light source unit 10 reflects the light emitted from the light emitting module 183 by the standing portion 186 of the mounting member 181 and then emits the light to the outside. Thereby, compared with the case where light is directly emitted from the SMD on the substrate whose main surface is directed to the outside, uniform light with less luminance unevenness can be emitted.

Further, the SMD 188 is disposed on the side of the substrate 187 close to the standing portion 186 as shown in FIG. Specifically, when the indirect light source unit 10 is viewed from above, the SMD 188 exists on the base side (portion where the standing portion 186 and the base portion 185 are coupled) rather than the center of the standing portion 186. Yes. Thereby, most of the light emitted upward from the SMD 186 is reflected by the inner surface 186a of the standing portion 186, and the light emitted from the SMD 186 can be used effectively.
(2) Heat Dissipation Characteristics The indirect light source unit 10 is mounted on the mounting member 181 such that the back surface of the substrate 187 on which the SMD 188 is mounted is in contact with the base portion 185 of the mounting member 181. Then, the indirect light source unit 10 is attached to the instrument body 3 with the base portion 185 of the attachment member 181 in contact with the instrument body 3.

For this reason, the heat generated by the light emission of the light emitting module 183 is transmitted from the substrate 187 to the instrument body 3 via the base portion 185 of the mounting member 181 as shown by the arrow in FIG. The instrument main body 3 has a larger volume (volume) than the mounting member 181 and does not easily rise in temperature, and heat conduction from the mounting member 181 to the instrument main body 3 is promoted.
The indirect light source unit 10 is attached to the instrument body 3 with the base portion 185 of the attachment member 181 in contact with the circuit cover 12. Therefore, the heat generated by the light emission of the light emitting module 183 is also transmitted from the substrate 187 to the circuit cover 12 via the mounting member 181 as indicated by the arrows in FIG. The circuit cover 12 has a volume (volume) larger than that of the mounting member 181 and does not easily rise in temperature, and promotes heat conduction from the mounting member 181 to the circuit cover 12.

  Further, since the standing portion 186 is provided integrally with the base portion 185, a part of heat generated by light emission of the light emitting module 183 is transmitted to the standing portion 186 through the base portion 185. The transmitted heat is released from the standing portion 186. In particular, since the SMD 188 is mounted on the substrate 187 at a position close to the standing portion 186, heat due to light emission of the light emitting module 183 is easily transmitted to the standing portion 186.

As described above, the heat of the light emitting module 183 can be transmitted to the instrument main body 3 and the circuit cover 12, and an excessive temperature rise of the SMD 188 can be suppressed.
Furthermore, since the indirect light source unit 10 is in contact with the circuit cover 12 at a position close to the substrate 187, the heat of the substrate 187 transmitted from the SMD 188 can be efficiently transmitted to the circuit cover 12 side.
<Second Embodiment>
In the first embodiment, a plurality of (four) indirect light source units 10 are provided at intervals in the circumferential direction of the circuit cover 12.

However, the indirect light source unit may be provided in a state of being continuous over the entire circumference in the circumferential direction. 2nd Embodiment demonstrates the illuminating device 201 by which one indirect light source unit was provided in the circuit cover on the back surface of the instrument main body.
18 is a perspective view of the lighting device 201 according to the second embodiment with the upper cover 13 removed, and FIG. 19 is an exploded perspective view of a rear member provided on the instrument main body 203. FIG. FIG. 20 is an enlarged sectional view of the periphery of the indirect light source unit 205.

As shown in FIGS. 18 and 19, the illuminating device 201 includes an instrument body 203, an indirect light source unit 205, a lighting circuit unit (not shown), and a circuit cover 207 as main components. Again, the illumination device 201 includes the upper cover 13 in order to protect the indirect light source unit 205 and prevent dust and the like from entering the indirect light source unit 205.
Here, the lighting device 201 is a ceiling light whose construction material is a ceiling, and a cover that covers another light source unit different from the indirect light source unit 205, another light source unit, and the like is necessary on the front surface of the fixture body 203. If there is, an umbrella member 31 or the like is provided.

  In the lighting device 201 according to the second embodiment, the lighting circuit unit and the outer / inner light source units 5 and 7 described in the first embodiment are used as the lighting circuit unit and another light source unit. In addition, when other members are represented in the drawing and are denoted by the same reference numerals as those in the first embodiment, the same as described in the first embodiment also in the lighting device according to the second embodiment. Reference numerals are used, and the description of the configuration is omitted.

The instrument body 203 has a configuration similar to that of the instrument body 3 according to the first embodiment. However, as shown in FIG. 20, the screw hole for fixing the base member 211 of the indirect light source unit 205 is upper. The difference is that it is provided inside the cover.
As shown in FIGS. 18 and 19, the circuit cover 207 includes a cover main body 207a having a bottomed cylindrical shape, and an outer flange 207b projecting outward from an opening side end of the cover main body 207a. As shown in FIG. 20, the outer end portion of the outer flange portion 207 b is placed on the third flat portion 51 of the instrument main body 203.

  The indirect light source unit 205 is mounted on the base member 211 and a plate-like base member 211 mounted on the back surface of the outer flange portion 207b of the circuit cover 207, as shown in FIGS. A substrate 213, an SMD 215 that is a plurality of semiconductor light emitting elements mounted on the substrate 213, and a reflection member 217 that reflects light emitted from the SMD 215 and travels along the ceiling surface.

As shown in FIG. 19, the substrate 213 has an annular shape. The substrate 213 has a wiring pattern for connecting a plurality of SMDs 215 in a predetermined connection form (for example, parallel connection, series connection, series-parallel connection, etc.), and a connector 216 that is electrically connected to the wiring pattern. Is provided on the substrate 213.
The SMD 215 may have the same configuration as the SMD 188 according to the first embodiment, or may have a different configuration. The plurality of SMDs 215 are mounted on the annular substrate 213 in one or a plurality of rows (here, one row) at equal intervals in the circumferential direction. The substrate 213, the connector 216, and the SMD 215 constitute a light emitting module 219.

The base member 211 has an annular shape like the substrate 213. The inner diameter of the base member 211 is smaller than the inner diameter of the substrate 213, and the outer diameter of the base member 211 is larger than the outer diameter of the substrate 213. The base member 211 is made of a metal material having high thermal conductivity.
The reflecting member 217 has a cross-sectional shape similar to the cross-sectional shape of the standing portion 186 of the base portion 185 according to the first embodiment, and the shape is rotated once around the central axis of the instrument body 203. It has a three-dimensional shape.

  As shown in FIG. 20, the reflecting member 217 is curved in an arc shape whose center is on the base member 211 side from the peripheral edge of the base member 211 located on the center side of the fixture body 203 (on the central axis side of the lighting device 201). However, it has the standing part 221 standing upright. The reflection member 217 has an inner flange portion 223 that protrudes from the end portion on the instrument main body 203 side of the standing portion 221 to the center side of the instrument main body 203.

The outer peripheral surface 221a of the standing portion 221 of the reflecting member 217 is a reflecting surface. In the case where the reflecting member 217 is made of a metal material, for example, it can be implemented by performing metal plating or mirror finishing. Moreover, when the reflection member 217 is comprised with the resin material, it can implement by giving metal plating or apply | coating white paint, for example.
The inner flange 223 has a configuration for mounting the reflecting member 217 to the circuit cover 207. This configuration is, for example, through holes 223a formed at intervals in the circumferential direction of the circuit cover 207. The reflection member 217 is screwed to the circuit cover 207 by a screw member 225 using the through hole 223a. The inner flange portion 223 is formed over the entire circumference here, but at least What is necessary is just to be formed in the part corresponding to the through-hole 223a.

  The indirect light source unit 205 according to the second embodiment corresponds to the light emitting module 219 in which a plurality of SMDs 215 are mounted on the annular substrate 213 at regular intervals, and the annular substrate 213. And an annular reflecting member 217 that is continuous in the circumferential direction. For this reason, the light emitted from the indirect light source unit 205 to the side of the illuminating device 201 becomes uniform in the circumferential direction of the illuminating device 201, and luminance unevenness due to indirect illumination can be reduced.

As shown in FIG. 20, the indirect light source unit 205 is configured such that the base member 211 is screwed onto the circuit cover 207 and the instrument body 3 in a state where the back surface of the substrate 213 on which the SMD 215 is mounted is in contact with the base member 211. It is screwed through a member 227. For this reason, the heat generated by the light emission of the light emitting module 219 is efficiently transmitted from the substrate 213 to the instrument body 203 via the base member 211.
<Modification>
1. Indirect light source unit (1) Number of columns of LEDs (SMD) In each embodiment, the SMDs 188 and 215 are arranged in one row on the substrates 187 and 213, but the SMDs may be arranged in other numbers. In this case, the pitch of the SMD to be mounted may be different or the same in each row. Furthermore, the SMDs in a row may be mounted in a state (staggered) that is located between other adjacent rows and arranged in the longitudinal direction (in a staggered manner), or in a state in which they are in the same position in the longitudinal direction May be.

Further, the type of SMD to be mounted may be changed in each column. For example, an SMD that emits white light with a low color temperature may be arranged in the first row, and an SMD that emits white light with a high color temperature may be arranged in the second row.
(2) Light Color In each embodiment, the light color emitted from the SMDs 188 and 215 is not particularly described, but for example, daylight white light or daylight white light may be used. . Furthermore, a plurality of types of SMDs having different color temperatures may be used and all of them may be turned on, or only SMDs having different color temperatures may be turned on.
(3) Mounting Member In the first embodiment, the mounting member 181 is integrally provided with a base portion 185 and a standing portion 186. However, the base portion 185 on which the light emitting module 183 is placed may be separately configured by a flat plate member, and the standing portion 186 having a reflection function may be separately configured by a reflecting member.

Conversely, in the second embodiment, the base member 211 and the reflecting member 217 are provided separately, but these may be provided as an integral unit. In this case, for example, it can be carried out by injection molding using a resin material and performing plating or applying a white paint on the outer peripheral side of the standing portion (the side facing the light emitting module).
The base portion 185 of the mounting member 181 of the first embodiment and the base member 211 of the second embodiment are plate-shaped substantially parallel to the horizontal plane (the mounting surface of the construction material), and the cross-sectional shape is straight. ing. However, the base portion has a portion extending in parallel with the ceiling surface (mounting material mounting surface), and the portion only needs to be in contact with at least one of the circuit cover and the instrument body, and the other portions are For example, it may be bent, curved, recessed or protruding.

Hereinafter, an example in which a part of the base portion is bent will be described as a first modification.
FIG. 21 is an enlarged view of the periphery of the indirect light source unit according to the first modification.
The indirect light source unit 301 includes a light emitting module 183 and a mounting member 303. The light emitting module 183 includes a substrate 187, an SMD 188 and a connector 189.
The mounting member 303 has a base portion 305, a mounting portion 307, and a standing portion 186. Base portion 305 extends parallel to the ceiling surface. The mounting portion 307 is bent outward from the outer end of the base portion 305 toward the instrument body 3 and then extends outward along the back surface of the instrument body 3.

The mounting portion 307 has a through hole 307 a, and the screw member 309 is screwed by a screw member 311 on the back surface of the instrument body 3 after being inserted through the through hole 307 a from the front side of the instrument body 3.
In this example, silicone resin 315 is filled between the base portion 305 of the mounting member 303 and the second flange portion 178b of the circuit cover 12 in order to improve the heat conduction of the mounting member 303 to the circuit cover 12 side. Yes. Silicone resin 315 is in contact with circuit cover 12 and base portion 305.

With the above configuration, the heat of the indirect light source unit 301 is efficiently transmitted to the circuit cover 12 and the instrument body 3 as shown by the arrows in FIG.
(4) About Mounting In the first embodiment, the base portion 185 is mounted on the instrument body 3 in a state of being in direct contact with the circuit cover 12 and the instrument body 3. In the second embodiment, the base member 211 is attached to the circuit cover 207 and the instrument main body 203 in a state where the base member 211 is in direct contact with the circuit cover 207.

However, the base portion (including the base member) may contact the circuit cover or the instrument body via a material having high thermal conductivity such as a heat sheet, for example.
(5) Positional relationship with the light source unit In the embodiment, as shown in FIG. 9, the SMD 99 of the outer light source unit 7 and the SMD 188 of the indirect light source unit 10 provided on the front surface of the instrument body 3 are on the front and back of the instrument body 3. The light source units 7 and 10 are disposed in a state where they are located. For example, the semiconductor light emitting element of the indirect light source unit is disposed in a portion where the semiconductor light emitting element of the light source unit disposed on the front surface of the instrument body 3 does not exist. You may do it. Thereby, it becomes possible to transmit the heat | fever of an indirect light source unit to an instrument main body efficiently.
2. Lighting Device The lighting devices 1 and 201 according to the first and second embodiments have a circular shape when viewed from the front, but the lighting device may have another shape. Examples of other shapes include a square shape, a rectangular shape, and an oval shape.

Also, the luminous flux for the illuminating devices 1 and 201 has not been described. However, the luminous flux may be the same as that of the current illuminating device using a fluorescent lamp, or may be different from that of the current illuminating device. You may make it emit.
In addition, the lighting devices 1 and 201 according to each embodiment can be mounted on the hook ceiling used to mount the current lighting device and receive power via the hook ceiling. Alternatively, it may be a lighting device attached to a dedicated hook ceiling. In this case, when a lighting device (actually the device with the cover removed) is attached to the hooking ceiling, a through-hole for grasping the position of the hooking ceiling is required.

However, if it is not necessary to confirm the position of the hook ceiling using the through hole, the instrument body may not have the through hole.
Furthermore, the lighting device may be a device having an indirect light source unit only on the back surface of the fixture body and not having a light source unit on the front surface.
In each embodiment, the appliance main bodies 3 and 203 are mounted on the ceiling. However, for example, an illumination device in which the appliance main body is mounted on a wall may be used. That is, a wall may be used as a construction material.

The lighting devices 1 and 201 in the respective embodiments have the lighting circuit unit 11 and the circuit covers 12 and 207 on the back surface of the fixture body 3 and 203. For example, the lighting circuit unit is provided on the front surface of the fixture body. It may be a lighting device. In this case, the indirect light source unit is attached to the instrument body in a state where the base portion contacts the back surface of the instrument body.
3. Circuit Cover In the embodiment, the circuit cover 12 is made of a non-light-transmitting material (for example, a metal material). For example, the circuit cover is made of a light-transmitting material, and the indirect light source unit is a circuit cover. You may store in. In this case, the upper cover is not necessary.

  As mentioned above, although the structure of the illuminating device which concerns on this invention was demonstrated based on embodiment and a modification, this invention is not limited to the said embodiment and its modification. For example, the structure which combined suitably the partial structure of the said embodiment and its modification may be sufficient. In addition, the materials, numerical values, and the like described in the above embodiments are merely preferable examples and are not limited thereto. Furthermore, it is possible to appropriately change the configuration without departing from the scope of the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 Illuminating device 3 Appliance main body 5 Inner light source unit (other light source units)
7 Outside light source unit (other light source unit)
DESCRIPTION OF SYMBOLS 10 Indirect light source unit 11 Lighting circuit unit 12 Circuit cover 177 Cover main body 178 Outer part 185 Base part 186 Reflecting part 187 Substrate 188 SMD (semiconductor light emitting element)

Claims (6)

An instrument body that is mounted with the back facing the construction material with a gap,
A light source unit for indirect illumination provided on the back of the instrument body,
The light source unit includes a plate-like base portion attached to the back surface of the instrument body, a substrate placed on the base portion, a plurality of semiconductor light emitting elements mounted on the substrate, and the semiconductor light emitting elements A reflection part that reflects the light emitted from and advances along one surface of the construction material,
The main surface of the said base part and the main surface of the said board | substrate are contacting. The illuminating device characterized by the above-mentioned. A lighting circuit unit for the light source unit and a circuit cover that covers the lighting circuit unit are provided on the back of the instrument body,
The lighting device according to claim 1, wherein a part of the base portion is in contact with the circuit cover. An instrument body that is mounted with the back facing the construction material with a gap,
A light source unit for indirect illumination provided on the back of the instrument body;
A lighting circuit unit for the light source unit provided on the back of the instrument body;
A circuit cover provided on the back surface of the instrument body and covering the lighting circuit unit;
The circuit cover includes a bottomed cylindrical cover main body, and an outer flange portion that projects outwardly from the opening side end of the cover main body along the rear surface of the instrument main body and is attached to the rear surface. Have
The light source unit includes a plate-like base portion attached to at least one of a back surface of the instrument body and a back surface of the outer cover of the circuit cover, a substrate placed on the base portion, and mounted on the substrate A plurality of semiconductor light-emitting elements, and a reflection part that reflects light emitted from the semiconductor light-emitting elements and travels along one surface of the construction material,
The main surface of the said base part and the main surface of the said board | substrate are contacting. The illuminating device characterized by the above-mentioned. The base part and the reflection part are constituted by one member,
The reflection part is erected from a peripheral edge located on the center side of the instrument body in the base part, and a surface opposite to the center side of the instrument body in the standing part is a reflection surface. The lighting device according to any one of claims 1 to 3. The lighting device according to any one of claims 1 to 4, wherein the plurality of semiconductor light emitting elements are composed of a plurality of types of elements having different color temperatures. The lighting device according to claim 1, further comprising: another light source unit that irradiates a surface opposite to the construction material on a surface opposite to the construction material in the instrument main body.

Images