JP2014135243A - Lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting apparatus capable of providing a setting receiving portion on a front surface of a main body, reducing brightness irregularity and emitting light in the entire surface of the main body, and suppressing an increase in the size of the lighting apparatus itself.SOLUTION: A lighting apparatus 1 includes: a plate-like main body 21; and a first light-emitting module 40 that includes a first mounting substrate 41, and a plurality of semiconductor light-emitting elements 42 mounted on the first mounting substrate 41, and that is arranged on a front surface 21a of the main body 21 into an annular shape in a plan view. On the front surface 21a of the main body 21, a second light-emitting module 50 is arranged inward of the annular shape of the first light-emitting module 40. While the main body 21 is viewed in a plan view, a setting receiving portion 27 is provided between the first and second light-emitting modules 40 and 50. Furthermore, the first and second light-emitting modules 40 and 50 are arranged so that emitted lights from the first and second light-emitting modules 40 and 50 overlap with each other in a region right above the setting receiving portion 27.

Description

  The present invention relates to an illuminating device, and more particularly to an illuminating device of the type used by being attached to a ceiling or the like for indoor lighting.

As this type of lighting device, a configuration having a light emitting module in which a plurality of LED elements (light emitting diode elements) are arranged in a ring shape instead of a lighting device including an annular fluorescent lamp has begun to spread (patent) Reference 1).
As shown in FIG. 7A, the lighting device 1000 has a disk-like appearance, is attached to the ceiling surface with the instrument body 1200 side as the back surface, and faces forward (Z direction in the figure) with the cover 1100 as the front surface. To emit illumination light.

As shown in FIG. 7 (b), the instrument main body 1200 has a main body 1210 having a circular shape in a plan view that constitutes the instrument main body 1200 on the front side thereof. A front surface 1210 a of the main body 1210 is provided with a light emitting module 1300 having a ring shape in plan view. The light emitting module 1300 has a configuration in which a plurality of semiconductor light emitting elements 1310 are arranged in an annular shape on a mounting substrate.
In addition, a through-hole 1210b is provided in the center of the ring of the light emitting module 1300 in the main body 1210 so that the position of the hanging ceiling provided on the ceiling can be visually recognized when the lighting device 1000 is mounted on the ceiling. It has been. Furthermore, inside the ring of the light emitting module 1300, a power supply unit 1220 for driving the light emitting module 1300 so as to surround the through hole 1210b, and a setting receiving unit for receiving a setting operation regarding the lighting state of the light emitting module 1300 1230 is provided.

  The setting reception unit 1230 includes a sensor for receiving a setting signal transmitted from the remote controller, a plurality of buttons and a slide switch for receiving a manual setting, and the front surface of the main body 1210 in a plan view. It is provided in a state exposed forward from 1210a.

JP 2012-146667 A

However, in the configuration of the lighting device disclosed in Patent Document 1, since the setting reception unit and the like are arranged on the inner side of the light emitting module on the front surface of the main body, the inner side of the light emitting module is a non-light emitting region where light is not emitted. . Furthermore, since the light distribution angle of the emitted light of the semiconductor light emitting element is narrow, the luminance unevenness is remarkably generated in each region as the entire lighting device.
Therefore, a configuration in which the semiconductor light emitting elements are arranged over the entire front surface of the main body is conceivable. In such a case, however, a setting reception unit must be provided behind the light emitting module. However, since the setting receiving unit receives signals from the remote controller and manual setting operations, the setting receiving unit cannot perform its function if provided behind. Alternatively, the setting reception unit may be provided in the outer peripheral region outside the light emitting module. However, by providing the setting receiving unit in the outer peripheral region, the outer diameter of the main body is increased and the lighting device is increased in size.

  The present invention has been made in view of the above-described problems, and can provide a setting reception unit on the front surface of the main body, can reduce luminance unevenness and emit light over the front surface of the main body, and It aims at providing the illuminating device which can suppress the enlargement of illuminating device itself.

  An illumination device according to one embodiment of the present invention for solving the above-described problems is a plate-shaped main body, a first substrate having a ring shape in plan view disposed on the front surface of the main body, and mounted on the first substrate. A first light emitting module comprising a plurality of semiconductor light emitting elements, wherein a second substrate is mounted on the front surface of the main body and the second substrate. A second light-emitting module composed of a plurality of semiconductor light-emitting elements is arranged inside the ring of the first light-emitting module, and the first and second light-emitting modules are in a state in which the main body is viewed in plan view. A setting accepting unit that accepts a setting operation related to the lighting state is disposed between the first and second light emitting modules on the front surface of the main body, and each of the first and second light emitting modules emits each of the emitted lights. Overlap in the area directly above the setting reception It is arranged in Migihitsuji.

  Note that the “directly above area” of the setting reception unit referred to in this specification refers to an area that overlaps the arrangement area of the setting reception unit in a state where the main body is viewed in plan. In addition, the “non-light emitting region” refers to a region where a light emitting member serving as a light source such as the first and second light emitting modules is not provided.

According to the lighting apparatus according to one aspect of the present invention, the setting reception unit is disposed on the front surface of the main body, and the first light emitting module having a ring shape in plan view and the second light emission located inside the ring. The modules are arranged with the setting receiving unit positioned therebetween. Further, the first and second light emitting modules are arranged so that the respective emitted lights overlap in a region immediately above the setting receiving unit.
As a result, according to the above configuration, the setting reception unit can be provided on the front surface, luminance unevenness can be reduced and light can be emitted over the front surface of the main body, and the increase in size of the lighting device itself can be suppressed.

It is the perspective view which shows the external appearance of the illuminating device 1 which concerns on embodiment, (a) is the figure seen from the front side, (b) is the figure seen from the back side. FIG. 3 is a developed perspective view showing the configuration of the lighting device 1. (A) is the figure which planarly viewed the illuminating device 1 in the state which removed the cover 3, (b) is a partial sectional view of the Z direction in the AB imaginary line illustrated to (a). is there. 3 is a schematic cross-sectional view including a center r of the main body 21 in the Z direction of the lighting device 1. FIG. FIG. 10 is a schematic cross-sectional view including a center r of a main body 21 in the Z direction of a lighting device 100 according to Modification 1. FIG. 10 is a schematic cross-sectional view including a center r of a main body 21 in the Z direction of a lighting device 200 according to Modification 2. (A) is the perspective view which looked at the conventional illuminating device 1000 from the front side, (b) is the figure which planarly viewed the illuminating device 1000 from the front in the state which removed the cover 1100.

[Embodiment]
<< Appearance structure of lighting device >>
Hereinafter, for the sake of explanation, the positive direction and the negative direction of the Z-axis shown in the drawings are defined as the front and rear of the lighting device 1, respectively.
As shown in FIG. 1A, the external appearance of the lighting device 1 is a disk shape composed of an instrument body 2 and a cover 3.

The illuminating device 1 is a so-called ceiling light that can be detachably attached to the ceiling, and is attached to the ceiling with the fixture body 2 side as the back surface, and emits irradiation light toward the front with the cover 3 side as the front surface.
As shown in FIG.1 (b), the illuminating device 1 is provided with the adapter 20 which can be projected back from the back side. When the lighting device 1 is attached to the ceiling, the adapter 20 is connected to an adapter on the hook ceiling side that is attached to the ceiling, and the lighting device 1 receives power from the commercial power source via the adapter 20.

《Configuration of lighting device》
As shown in FIG. 2, the lighting device 1 includes a first light source unit 4 and a second light source unit provided on the front side of the instrument main body 2 in addition to the instrument main body 2 and the cover 3 constituting the above-described appearance. 5 is provided inside.
Hereinafter, each component will be described.

<Equipment body>
The instrument main body 2 includes a disk-shaped main body 21, a power supply unit 23 for supplying power to the light source units 4 and 5, and a case 24 mounted on the back side of the main body 21 in a state in which the power supply unit 23 is housed. It is configured as.
(Body)
The main body 21 has a disk shape extending along a plane perpendicular to the Z direction, and a through hole 2a is provided at the center thereof. The through-hole 2a is for an operator to visually recognize the position of the hooking ceiling when the lighting device 1 is attached to the ceiling with the cover 3 removed.

The front surface 21 a of the main body 21 includes a frustum-shaped central portion 210 projecting forward, a flat flat portion 211 surrounding the central portion 210, and a concave outer edge portion 212 surrounding the flat portion 211.
The first light source unit 4 is disposed on the flat portion 211, and the second light source unit 5 is disposed on the top surface of the central portion 210. Further, the flat portion 211 is provided with an opening 21b, and a setting receiving portion 27 constituting the power supply unit 23 is disposed so as to be exposed from the opening 21b in a state where the main body 21 is viewed in plan. An attachment member 22 for attaching the cover 3 to the main body 21 is provided on the outer edge portion 212.

The material constituting the main body 21 is, for example, a metal material or an electrically insulating material such as ceramics or a heat conductive resin.
(Power supply unit)
The power supply unit 23 includes a control block 25 and a power supply block 26 mounted on an insulating plate.

  The control block 25 includes a setting receiving unit 27 including a receiving unit 28 and a manual setting unit 29, and the setting receiving unit 27 receives a setting operation related to the lighting state of the light source units 4 and 5. Specifically, the receiving unit 28 receives a setting signal from a remote controller for remotely operating the lighting device 1, and the manual setting unit 29 has a push button and performs initial setting performed by depressing the push button. Accept setting change operations. Then, the control block 25 outputs a control signal based on the setting received by the setting receiving unit 27 to the power supply block 26.

The power supply block 26 includes a circuit board and various electronic components mounted on the circuit board, and includes a circuit that converts an alternating current supplied via the adapter 20 into a direct current.
(Case)
The case 24 has a dish shape with a through hole 2a provided at the center thereof, and a power supply unit 23 is provided on the bottom surface. As a material constituting the case 24, for example, a metal material is employed.

<First light source unit>
The first light source unit 4 is composed of a first light emitting module 40 having an annular shape in plan view and an annular first lens 43 provided on the front surface thereof.
The first light emitting module 40 has a configuration in which four subunits 40a to 40d are arranged in an annular shape in a plan view. Each subunit 40a to 40d has a 1/4 arc-shaped mounting board 41 and a front surface thereof. A plurality of mounted first LED elements (light emitting diode elements) 42. For example, white light is emitted from the first light emitting module 40.

The plurality of first LED elements 42 as a whole are arranged in three rows in an annular shape in plan view, and are mounted with the main emission direction directed in a direction (Z direction) orthogonal to the front surface of the flat portion 211. The light distribution angle a of each first LED element 42 is not less than 50 degrees and not more than 70 degrees.
Here, the “main emission direction” in the present embodiment refers to a direction orthogonal to the light emitting layer of a semiconductor light emitting element such as an LED element. In addition, the “light distribution angle” refers to an angle between the left and right directions in which the emitted light in the main emission direction is the central luminance and the luminance is ½ of the central luminance in accordance with a normal definition.

The first lens 43 has a convex portion located in front of each first LED element 42, and diffuses light emitted from the first light emitting module 40. As the constituent material of the first lens 43, for example, a translucent material such as an acrylic resin, a polycarbonate resin, or glass is employed.
<Second light source unit>
The second light source unit 5 includes a second light emitting module 50 and a second lens 53 each having an annular shape in plan view.

The second light emitting module 50 includes a mounting substrate 51 and a plurality of second LED elements 52 mounted on the front surface thereof. For example, white light is emitted from the second light emitting module 50.
The plurality of second LED elements 52 are arranged in an annular shape in plan view, and are mounted with the main emission direction directed in a direction (Z direction) orthogonal to the front surface of the central portion 210. The light distribution angle b of each second LED element 52 is not less than 50 degrees and not more than 70 degrees.

The second lens 53 has the same shape and material as that of the first lens 43 and diffuses light emitted from the second light emitting module 50.
<cover>
The cover 3 has a shape that can cover the entirety of the light source units 4 and 5, and is attached to the main body 21 while being locked to the attachment member 22.

As a material constituting the cover 3, for example, a translucent material such as a silicone resin, an acrylic resin, a polycarbonate resin, or glass is employed. Moreover, in order to diffuse the emitted light from the light source units 4 and 5, the inner surface of the cover 3 is subjected to a diffusion treatment with, for example, silica or a white pigment.
<< Arrangement configuration of each member in the body >>
As shown in FIG. 3 (a), first and second light source units 4 and 5 that are concentrically circular and have a circular shape in plan view are arranged on the front surface 21a of the circular main body 21 as the center r. The second light source unit 5 is arranged inside the ring of the one light source unit 4.

A region sandwiched between the light source units 4 and 5 is a non-light emitting region 21c where no light emitting member is disposed. In the non-light emitting area 21c, the setting receiving portion 27 is located in a state of being exposed forward through the opening 21b. That is, the setting reception unit 27 is disposed between the first and second light emitting modules of the light source units 4 and 5 in a state where the main body 21 is viewed in plan.
Specifically, the non-light-emitting region 21c has an annular planar shape, and the opening 21b is provided in a long shape along the circumferential direction. From the opening 21 b, the receiving surface 28 a of the receiving unit 28 that is the setting receiving unit 27 and the button surface 29 a of the manual setting unit 29 are exposed to the front.

The width w of the annular region 21c does not have to be constant along the circumferential direction, and may be a size that at least exposes the receiving surface 28a and the button surface 29a. In the present embodiment, the width w is slightly larger than the width of the exposed areas of the receiving surface 28a and the button surface 29a, and is, for example, 20 mm or more and 60 mm or less.
As shown in FIG. 3B, the main body 21 has a step with a height h1 in the Z direction because the central portion 210 has a frustum shape. This step is provided to secure a convection space for heat generated from the power supply unit 23 disposed on the back side of the main body 21. Further, by placing bulky components among the electronic components constituting the power supply unit 23 on the rear side of the central portion 210, it is possible to reduce the thickness of the case 24 and hence the lighting device 1. The height h1 is, for example, 5 mm or more and 20 mm or less.

"Superiority"
Hereinafter, the superiority of the illuminating device 1 employing the above configuration will be described with reference to the drawings.
As shown in FIG. 3, a setting reception unit 27 is disposed on the front surface 21 a of the main body 21 in a state where the main body 21 is viewed in plan. In addition, on the front surface 21a of the main body, a first light emitting module 40 having a ring shape in plan view and a second light emitting module 50 located inside the ring have a setting reception unit 27 therebetween and a setting reception unit 27. In the region immediately above, the respective emitted lights are arranged so as to overlap each other.

Specifically, as shown in FIG. 4, the emitted light of the first LED element 42 and the emitted light of the second LED element 52 that are most adjacent to each other with the setting receiving unit 27 interposed therebetween are regions immediately above the setting receiving unit 27. Have overlapping areas (broken line areas in the figure).
Therefore, on the back surface of the cover 3 facing the front surface 21a of the main body 21, a region where the emitted light of the first and second LED elements 42 and 52 overlaps with a cross-sectional distance of d1 is formed. As a result, the brightness of the area immediately above the non-light-emitting area 21c can be increased, so that the brightness of the surface area of the cover 3 existing in the area immediately above the setting receiving unit 27 can be increased. It becomes possible to reduce.

The cross-sectional distance d1 is preferably greater than or equal to the width w of the non-light emitting region 21c, and the light distribution angle of each of the first and second LED elements 42 and 52 and the Z direction between the non-light emitting region 21c and the cover 3 are set. It is desirable that the distance is adjusted to be, for example, 50 mm or more and 100 mm or less.
Moreover, since the setting reception part 27 is exposed from the front surface 21a of the main body 21, the receiving unit 28 can receive the signal of the remote controller transmitted from the front side satisfactorily. Similarly, the manual setting unit 29 (see FIG. 3) can satisfactorily accept an operation of depressing the button by the user.

Further, according to the lighting device 1 according to the present embodiment, the power supply unit 23 that supplies power to the first and second light emitting modules 40 and 50 is provided on the back side of the main body 21.
As a result, the region where the second light emitting module can be arranged inside the ring of the first light emitting module 40 as compared with the configuration in which the power supply unit is provided inside the ring of the first light emitting module 40 on the front surface 21a of the main body 21. It is possible to secure a large value. Therefore, it is possible to increase the luminance in the non-light emitting region 21c, particularly in the region immediately above the setting receiving unit 27.

Moreover, according to the illuminating device 1 which concerns on this Embodiment, the front surface 21a of the main body 21 has the flat flat part 211 located in the outward of the frustum-shaped center part 210 which protruded ahead, and the center part 210. FIG. Have. The first light emitting module 40 is disposed on the flat portion 211, and the second light emitting module 50 is disposed on the top surface of the central portion 210.
As a result, it is possible to secure a large space behind the central portion 210 in the case 24 and, in turn, it is possible to secure a convection space for heat generated from the power supply unit 23 stored in the case 24. Further, by placing bulky components among the electronic components constituting the power supply unit 23 on the rear side of the central portion 210, the case 24 can be thinned in the Z direction.

Moreover, according to the illuminating device 1 which concerns on this Embodiment, both the 1st and 2nd light emitting modules 40 and 50 are planar view cyclic | annular form, and are arrange | positioned concentrically.
As a result, it is possible to uniformly increase the luminance of the non-light emitting area 21c, particularly the area immediately above the setting receiving unit 27.
[Modification]
The lighting device according to the present invention is not limited to the above-described embodiment, and the following modifications may be employed.

In the modifications shown below, the modification 1 relates to the nightlight 6, the modification 2 relates to the cover 3, and the other configurations can be the same as those in the embodiment.
<< Modification 1 >>
As shown in FIG. 5, the night light 6 is provided on the front surface 21 a of the main body 21 in a region between the first light emitting module 40 and the second light emitting module 50. Therefore, the area sandwiched between the first and second light emitting modules 40 and 50 is composed of the arrangement area 21d of the nightlight 6 and the non-light emitting area.

The nightlight 6 includes a substrate 61 and a third LED element 62 disposed on the substrate 61. The 3rd LED element 62 is distribute | arranged toward the direction (Z direction) orthogonal to the arrangement | positioning area | region 21d.
Unlike a main light source such as the first and second light emitting modules 40 and 50 being a surface light source, the nightlight is configured as a point light source. Therefore, as shown in the figure, when the lighting device is used in a state where the wiring of the adapter 20 protrudes forward from the front surface 21a of the main body 21, the light emitted from the nightlight is blocked by the protruding wiring portion, and the cover has a shadow. Prone to occur.

However, in the configuration of this modification, the side peripheral surface 21e of the frustum-shaped central portion 210 is a reflection surface that reflects the emitted light L1 that travels from the nightlight 6 to the wiring of the adapter 20. As a result, it is possible to reduce the occurrence of shadows on the cover 3 such as the wiring of the adapter 20 located in the propagation direction of the light emitted from the night light by reflecting the light emitted from the night light 6 forward.
From the viewpoint of properly expressing the purpose of the side peripheral surface 21e, the height h1 of the step is preferably higher than the height of the nightlight 6. For example, h1 is desirably 10 mm or more and 50 mm or less. In addition, in order to improve the reflection characteristics of the side peripheral surface 21e, the main body 21 is made of a metal material, or the surface corresponding to the side peripheral surface 21e is formed on the surface of the night light 6 after the main body 21 is made of an insulating material. It is desirable to have a configuration in which a material having a relatively high reflectance with respect to incident light is coated.

Further, in the configuration of the present modification, an annular second light emitting module 50 surrounding the through hole 2a is disposed. Therefore, even if the emitted light of the second light emitting module 50 is blocked by the wiring of the adapter 20, the broken line region in the figure is the irradiation region, so that it is difficult for the cover 3 to be shaded.
<< Modification 2 >>
As shown in FIG. 6, the portion of the cover 3 that faces the main body 21 includes a bulging portion 3 a that is located immediately above the central portion 210 and an inclined portion 3 b that is located immediately above the flat portion 211. The bulging portion 3a has a frustum shape protruding forward, and the inclined portion 3b has a shape inclined forward from the outer edge toward the center. That is, the cover 3 has a shape in which a portion located directly above the central portion 210 of the main body 21 bulges forward compared to a portion located directly above the flat portion 211 outside the central portion 210.

By providing the frustum-shaped bulged portion 3a, it is possible to secure a large cross-sectional distance d2 of the cover 3 irradiated by the light emitted from the second semiconductor light emitting element 52, and thereby reduce uneven brightness of the cover 3. It becomes possible to do.
From the viewpoint of properly expressing the purpose of providing the bulging portion 3a, the difference between the distance h3 between the top surface of the central portion 210 and the cover 3 and the distance h2 between the edge of the central portion 210 and the cover 3 is a step difference. The closer to the height h1, the better. For example, the interval h2 is desirably 30 mm or more and 70 mm or less, and the interval h3 is desirably 30 mm or more and 70 mm or less.

[Other matters]
As mentioned above, although the structure of the illuminating device which concerns on this invention was demonstrated based on embodiment and a modification, it is the illustration for demonstrating plainly the structure of this invention, an effect | action, and an effect. Therefore, the present invention is not limited to the above-described form except for its essential part.
In addition to the configurations in the above-described embodiments and modifications, the following configurations can be adopted.

《Lighting device》
The appearance of the lighting device 1 according to the embodiment is circular when viewed from the front, but may be other shapes such as a square shape, a rectangular shape, an elliptical shape, and the like.
The lighting device 1 is provided with a through hole 2a in the center of the device body 2 in accordance with a hook ceiling mode generally used for mounting the current lighting device. The shape is not limited to this. The through-holes may be formed so that the position of the hook ceiling can be confirmed when the lighting device is attached to the ceiling with the cover removed, in accordance with the manner of use of various hook ceilings.

Moreover, although the through-hole 2a has penetrated over the front surface of the main body, it is good also as a structure which blocks the penetration area | region of the said front surface with a cap member, after attaching an illuminating device to a ceiling. Alternatively, a second light-emitting module in which an LED element is mounted on a light-transmitting substrate may be provided on the through region.
<Main body>
The main body 21 according to the embodiment has a disk shape, but may have other shapes, for example, a square shape, a rectangular shape, an elliptical shape, or the like according to the appearance of the lighting device.

The front surface 21a of the main body 21 has a frustum-shaped central portion 210 protruding forward from the flat portion 211. However, the flat portion and the central portion may be configured as an integral flat surface without protruding. Furthermore, the structure which makes a flat part protrude ahead rather than a center part, and makes the top surface into a flat donut shape may be sufficient.
Moreover, the shape which makes the center part protrude forward is not limited to the frustum shape whose side peripheral surface is inclined inward, but a trapezoidal shape whose side peripheral surface is not inclined, or the inverted frustum whose side peripheral surface is inclined outward. Or the like.

The non-light emitting area 21c of the main body 21 is provided with an opening 21b and the setting receiving unit 27 exposed. However, if the member arranged in the non-light emitting area 21c is other than a light emitting member serving as a light source, The effects of the invention are achieved. For example, in addition to the setting reception unit, a configuration in which an attaching member such as a screw, an optical member such as a light diffusing member or a light reflecting member, or the like may be provided.
In addition, the non-light emitting region 21c has an annular shape in a plan view, but as in Modification 1, a light emitting member such as a nightlight or a display light source is provided in a region sandwiched between the first and second light emitting modules 40 and 50. In the case of disposition, the shape of the non-light emitting region in plan view is C-shaped.

<< First light emitting module >>
[overall structure]
The first light emitting module 40 according to the embodiment has an annular shape, but may be in an annular shape, for example, a polygonal shape or an elliptical shape.
The first light emitting module 40 includes four subunits 40a to 40d. However, the first light emitting module 40 may have a configuration in which a plurality of semiconductor light emitting elements are arranged in an annular shape on an annular mounting substrate without being formed into subunits.

[Semiconductor light emitting device]
In the embodiment, the first LED elements 42 are arranged in three rows in an annular shape, but may be arranged in a ring shape.
The first LED element 42 is mounted with its main emission direction oriented in a direction (Z direction) perpendicular to the front surface of the flat portion 211, but the main emission direction is appropriately within the angular range of the light distribution angle a. May be inclined toward the front surface of the flat portion 211. Further, in addition to the configuration in which all the first LED elements 42 are mounted so that the respective main emission directions are the same direction, for example, the first LED element that forms the innermost annular shape is emitted. It is good also as a structure mounted toward the direction inclined inward from the Z direction. In this case, it is possible to increase the luminance of the region immediately above the non-light emitting region.

In the embodiment, an LED element is employed as the semiconductor light emitting element. However, an LD (laser diode) or EL (electroluminescence) element can be employed in addition to the LED element.
[First lens]
In the embodiment, the first lens 43 is provided. However, when the irradiation area can be sufficiently secured by the light distribution angle of the first LED element to be selected or the diffusion treatment applied to the cover, the first lens 43 is used. The lens is not an essential component.

<< Second light emitting module >>
[overall structure]
Although the second light emitting module 50 according to the embodiment has an annular shape, it may be a polygonal ring or an elliptical ring. Furthermore, it is not a ring, but a C shape, a U shape, a 1 / n arc shape (n is, for example, An integer of 2 or more), a disk shape, a polygonal plate shape, or the like.

Moreover, although the 2nd light emitting module 50 was made into the integral thing, it is good also as a structure which provides these subunits discretely in the front surface of a center part by unitization.
[Semiconductor light emitting device]
In the embodiment, the second LED elements 52 are arranged in a single ring in a ring shape, but may be arranged in a plurality of rings in a ring shape. Furthermore, for example, a configuration in which a plurality of second LED elements are arranged in a matrix on a disc-shaped or polygonal plate-shaped mounting board, or at least two or more second LED elements on a rectangular mounting board. It may be arranged. That is, it is sufficient if the region directly above the setting reception unit overlaps with the emitted light of the first light emitting module.

  The second LED element 52 is mounted with its main emission direction oriented in a direction (Z direction) orthogonal to the front surface of the central portion 210, but the main emission direction is appropriately within the angular range of the light distribution angle b. May be inclined toward the front surface of the central portion 210. In addition to the configuration in which all the second LED elements 52 are mounted so that the main emission directions are the same, for example, the emission direction of the plurality of LED elements is inclined outward from the Z direction. It is good also as a structure mounted toward a direction. In this case, it is possible to increase the luminance of the region immediately above the non-light emitting region.

Here, when adopting a configuration in which the first and second LED elements are mounted with their main emission directions directed in the Z direction, the following advantages are obtained. Without adopting a configuration in which the emitted light of these LED elements is diffused by a lens or reflected by a reflecting member, it is possible to superimpose the light just above the non-light emitting region with a simple configuration.
In the embodiment, the LED element is employed as the semiconductor light emitting element. However, in addition to the LED element, an LD or EL element can be employed.

[Second lens]
In the embodiment, the second lens 53 is provided. However, when the irradiation area can be sufficiently secured by the light distribution angle of the second LED element to be selected or the diffusion treatment applied to the cover, the second lens 53 is used. The lens is not an essential component.
"Power supply unit"
The power supply unit 23 according to the embodiment is arranged on the back side of the main body 21, but may be arranged on the front side. For example, the control block is arranged on the back side of the main body, and the power block is on the front side of the main body. It may be arranged in an exposed state.

In other words, the power supply unit may be arranged in a state where the receiving surface of the receiving unit and the button surface of the manual setting unit are exposed on the front surface of the main body. Therefore, the structure which protrudes from the front surface of a main body toward the front side may be sufficient as a setting reception part.
In the embodiment, the receiving unit 28 and the manual setting unit 29 are housed in the same casing, but the receiving unit and the manual setting unit are discretely arranged without being housed in the same casing. It may be configured. Further, either the receiving unit or the manual setting unit may be arranged inside the second light emitting module or outside the first light emitting module. In this case, the setting reception unit referred to in the present invention indicates one of the receiving unit and the manual setting unit.

《Nightlight》
The nightlight 6 according to the embodiment is provided in a region sandwiched between the first and second light emitting modules 40 and 50 in the flat portion 211 of the main body 21, but on the outer side of the second light emitting module 50. Any configuration may be used. The night light 6 is a light source member different from the first and second light emitting modules 40 and 50, and any one of the plurality of first LED elements 42 constituting the first light emitting module 40 is used. The structure may also have the function of nightlight.

The night light 6 uses the third LED element 62 as a light source, but various other light source bodies such as an LD or EL element and a light bulb can also be employed.
"cover"
The cover 3 according to the embodiment has a circular shape in plan view, but may have other shapes, for example, a square shape, a rectangular shape, an elliptical shape, or the like according to the appearance of the lighting device. .

  In the cover 3 according to the modified example 2, the portion facing the main body 21 is configured by the bulging portion 3a and the inclined portion 3b. It is possible, and it is good also as a site | part of the shape along the flat part which does not incline an inclination part. Moreover, the structure connected to the inclination part 3b as a shape which has only a frustum-shaped top surface about a bulging part may be sufficient. In other words, the portion of the cover that is located immediately above the central portion of the main body may have a shape that bulges forward compared to the portion that is located directly above the flat portion.

  In addition, when adopting a configuration in which the flat portion in the main body protrudes forward from the center portion and the top surface is a flat donut shape, the shape of the portion facing the main body of the cover is as follows. Is possible. The back of the cover that is located directly above the center of the main body has a frustum shape that protrudes toward the front of the main body compared to the back that is located directly above the flat part, and the back that is located directly above the flat part is not inclined. A flat surface. As a result, it is possible to secure a large irradiation area of the cover irradiated with the light emitted from the first light emitting module, and to reduce luminance unevenness in the area immediately above the non-light emitting area.

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Apparatus main body 3 Cover 4 1st light source unit 5 2nd light source unit 21 Main body 21a Front surface 21c of a main body Non-light emission area 27 Setting reception part 40 1st light emission module 41 1st mounting substrate 42 1st Semiconductor light emitting device 50 Second light emitting module 51 Second mounting substrate 52 Second semiconductor light emitting device

Claims (6)

A plate-shaped body,
A first light emitting module comprising a first substrate having a ring shape in plan view disposed on a front surface of the main body, and a plurality of semiconductor light emitting elements mounted on the first substrate;
A lighting device comprising:
On the front surface of the main body, a second light emitting module including a second substrate and a plurality of semiconductor light emitting elements mounted on the second substrate is located inward of the ring of the first light emitting module. Arranged,
In a state in which the main body is viewed in plan, a setting receiving unit that receives a setting operation related to the lighting state of the first and second light emitting modules is arranged between the first and second light emitting modules on the front surface of the main body. And
The first and second light emitting modules are arranged so that each emitted light overlaps in a region immediately above the setting receiving unit,
A lighting device characterized by that. A power supply unit that supplies power to the first and second light emitting modules is provided on the back side of the main body.
The lighting device according to claim 1. The front surface of the main body protrudes in a frustum shape at the center,
The first light emitting module is arranged on a flat part outside the central part,
The second light emitting module is disposed on a flat top surface of the central portion.
The lighting device according to claim 2. In a state where the main body is seen in a plan view, a light source that becomes a nightlight is further arranged in a region between the first light emitting module and the second light emitting module,
The side peripheral surface of the central portion on the front surface of the main body is a reflecting surface that reflects the emitted light from the nightlight,
The lighting device according to claim 3. A cover for covering the front surface of the main body;
The cover has a shape in which a portion located immediately above the central portion of the main body bulges forward compared to a portion located directly above a flat portion outside the central portion.
The lighting device according to claim 3 or 4, wherein The second light emitting module has an annular shape in a plan view concentric with the first light emitting module.
The lighting device according to claim 1, wherein the lighting device is a light source.

Images