CN102588777A - Lighting device - Google Patents

Abstract

The present invention provides a lighting fixture capable of suppressing temperature rise of light-emitting elements such as light-emitting diodes with a simplified configuration. The lighting fixture includes: a main body (1) having a mounting portion (6) facing a wiring fixture (Cb) provided on a fixture mounting surface (C) such as a ceiling surface; and a base plate (21) positioned on the mounting Around the part (6), the mounting surface faces the front side, and the back side is arranged to be in surface contact with the body (1). In addition, the lighting fixture includes: a light emitting element (22) such as a plurality of light emitting diodes mounted on the substrate (21).

Description

lighting equipment

technical field

The invention relates to a lighting fixture using a light emitting element such as a light emitting diode (Light Emitting Diode, LED) as a light source.

Background technique

In general residential lighting fixtures, a circular fluorescent lamp (fluorescent lamp) is used as a main light source, and lighting fixtures installed so as to cover the lower side of the circular fluorescent lamp are widely used. A cover (cover) member (shade) has a circular appearance.

In recent years, along with the high output, high efficiency, and popularization of light-emitting elements such as LEDs, lighting fixtures for general housing as described above have been developed, which use light-emitting elements as light sources, thereby Long life can be expected.

On the other hand, for light-emitting elements such as LEDs, as the temperature rises, the light output decreases, and the service life becomes shorter. Therefore, for lighting fixtures using solid-state light-emitting elements such as LEDs and electroluminescence (EL) elements as light sources, it is necessary to suppress the temperature rise of the light-emitting elements in order to extend the service life or improve characteristics such as luminous efficiency.

Conventionally, as lighting fixtures for general residences that use LEDs as light sources, for example, lighting fixtures that are installed around an installation portion of a ceiling installed on a ceiling surface with a A lighting device for controlling lighting of LEDs, in which a plurality of LEDs are arranged around the periphery of the lighting device. The LEDs are arranged to emit light toward the outer peripheral side in the lateral direction, and the emitted light is reflected by a reflector provided on the ceiling surface side, and then irradiates the front surface side.

In addition, in order to use a light-emitting element as a light source and to configure a lighting fixture in the same form as a conventional lighting fixture using a ring-shaped fluorescent lamp, for example, it is necessary to install the mounting part of the hanging ceiling body installed on the ceiling surface. A plurality of light emitting elements are arranged around, and the light emitted from the light emitting elements is irradiated to a predetermined range directly below.

In this way, when a plurality of light-emitting elements are arranged around the mounting portion as a light source, it is possible to realize a lighting fixture that can be configured in the same form as when a conventional ring-shaped fluorescent lamp is used, and can be expected to have a longer life or Thinning.

In addition, for a lighting fixture that can use a light-emitting element as described above and is expected to have a long life, it is less necessary to replace the light source for maintenance or clean the inside. Therefore, fixing by screws or the like A cover member that covers the light emitting element as a light source from the lower side is fixed to the main body side by means of a unit.

prior art literature

non-patent literature

Non-Patent Document 1: Sharp/LED Ceiling Lamp (retrieved on January 6, 2013, http://www.sharp.co.jp/corporate/news/100819-a-2.html)

However, in the conventional lighting fixture as described above, the light emitted from the LED in the lateral direction is reflected and then irradiated toward the front surface side, so the configuration of the lighting fixture may become complicated. In addition, since the LED is arranged near the lighting device, the heat generated by the LED and the lighting device interfere with each other, and the temperature of the LED may rise due to the heat.

In addition, if a light-emitting element such as an LED is used as a light source, there will be a problem that, since the light emitted by the light-emitting element has strong directivity and high brightness, the graininess is obvious, and it is difficult to make the brightness uniform, and the uniformity of the irradiated light cannot Uniformity will drop.

In addition, in the above-mentioned lighting fixture, insects and the like may enter the inside of the main body from an extremely small gap between the cover member and the main body. In such a case, in order to clean the inside, it is necessary to remove fixing means such as screws to disassemble the cover member. This operation is a troublesome operation that consumes time and effort for the user.

Contents of the invention

The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a lighting fixture capable of suppressing an increase in temperature of a light-emitting element with a simplified configuration.

In addition, the present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a lighting fixture that can improve the uniformity of irradiated light by arranging a plurality of light emitting elements around the mounting portion. .

In addition, the present invention was made in view of the above problems, and an object of the present invention is to provide a lighting fixture including a light source unit using a light emitting element as a light source, and the inside of which is easy to clean.

A lighting fixture according to an embodiment of the present invention includes: a body having a mounting portion facing a wiring device provided on a fixture mounting surface; and a substrate located around the mounting portion, the mounting surface facing the front side, and the back side configured to be in surface contact with the body. In addition, a plurality of light emitting elements are mounted on the substrate.

In addition, the lighting fixture according to the embodiment of the present invention includes: a mounting portion facing the wiring fixture provided on the fixture mounting surface; a substrate located around the mounting portion, and the mounting surface is disposed facing the front surface side; A plurality of light emitting elements assembled on the substrate. In addition, a lighting fixture according to an embodiment of the present invention includes a diffusion member that continuously covers at least two or more light emitting elements among the plurality of light emitting elements.

Moreover, the lighting fixture which concerns on embodiment of this invention is provided with the main body which has the attachment part which opposes the wiring fixture provided in the fixture installation surface. In addition, a lighting fixture according to an embodiment of the present invention includes: a light source unit disposed on the main body, in which a light-emitting element is used as a light source; and a translucent cover member detachably attached to the outer peripheral portion of the main body. , and the light-emitting elements are covered with a predetermined separation distance.

Invention effect

According to an embodiment of the present invention, it is possible to provide a lighting fixture capable of effectively suppressing an increase in temperature of a light emitting element.

Moreover, according to embodiment of this invention, the lighting fixture which can improve the uniformity of irradiation light can be provided.

In addition, according to an embodiment of the present invention, there can be provided a lighting fixture using a light-emitting element as a light source, and since the cover member is detachably attached to the main body, it is possible to easily clean the inside.

Description of drawings

FIG. 1 is a perspective view showing a lighting fixture according to an embodiment of the present invention;

Fig. 2 is an exploded perspective view showing the lighting fixture;

Fig. 3 is a schematic plan view viewed from below after removing the cover member and the lighting device cover in the lighting fixture;

Fig. 4 is a sectional view showing the lighting fixture;

Fig. 5 is an enlarged view showing part A in Fig. 4;

6 is a plan view showing a substrate in the lighting fixture;

7 is a partially enlarged cross-sectional view showing a state in which a light source unit and a diffusion member in the lighting fixture are combined;

Fig. 8 is an explanatory view showing the state of attaching and detaching the cover member in the lighting fixture by rotating;

Fig. 9(a) and Fig. 9(b) are plan views schematically showing the relative positional relationship when the cover member in the lighting fixture is attached to the main body.

Explanation of symbols

1 ... body

2 ...Light source department

3 ... Diffusion member (lens member)

4 ...Lighting device

5 ......Lighting device cover

6 ... Mounting part (adapter guide)

7 ......Cover member

11 ...opening

12, 33... flat part

13 ... step difference department

14 ...recessed part

15 ...elastic member

21, 21a...substrate

22, 22a... Light emitting element (LED)

31 ...Protruding part

32 ...... U-shaped groove

41 ... circuit substrate

42 ... circuit parts

51 ... side wall

52...Front face wall

53......Opening

54...Guide recess

61......Clip port

62...Electrical auxiliary parts

71...decorative cover

72......Light-receiving window

73...Protruding pins

74...Hood Mounting Accessories

75...housing support fittings

A ......Adapter/part

A1...Locking part

C ......Appliance installation surface (ceiling surface)

Cb...Wiring equipment (hanging ceiling body)

L...Light bulb color

N ... daylight color

S...Screw

Detailed ways

Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1 to FIG. 9( a ) and FIG. 9( b ). In each figure, the wiring connection relationship of wires and the like is sometimes omitted. In addition, the same code|symbol is attached|subjected to the same part, and repeated description is abbreviate|omitted.

The lighting fixture of the present embodiment is a lighting fixture for a general house attached to a suspended ceiling body used as a wiring fixture, and illuminates a room with light emitted from a light source unit. The suspended ceiling body is arranged on an appliance installation surface, and the light source part includes a plurality of light emitting elements mounted on a base plate.

In FIGS. 1 to 4 , the lighting fixture includes a main body 1 , a light source unit 2 , a diffusion member 3 , a lighting device 4 , a lighting device cover 5 , an attachment portion 6 , and a cover member 7 . In addition, the lighting fixture includes: an adapter (adapter) A, the adapter A is electrically and mechanically connected to the suspended ceiling body Cb, and the suspended ceiling body Cb is installed on the ceiling surface C as the fixture installation surface. . Such a lighting fixture has a circular circular appearance, and the front side is used as a light irradiation surface, and the back side is used as an installation surface when it is attached to the ceiling surface C.

As shown in FIGS. 2 to 5 , the main body 1 is a base (chassis) formed into a circular shape from a flat plate of a metal material such as a cold-rolled steel plate, and a circular opening 11 is formed in a substantially central portion. The opening 11 of the shape is used for arranging the mounting part 6 which will be described later. In addition, on the outer peripheral side of the flat portion 12 on the inner surface side where the light source unit 2 is mounted, a step portion 13 toward the back side is formed, thereby forming a groove-shaped concave portion 14 . Furthermore, a cover support member to which the cover member 7 is detachably attached is arranged at the step portion 13 . More specifically, the cover support member is a cover support fitting 75 and is arranged in the recess 14 formed in the step portion 13 . Furthermore, an elastic member 15 is provided on the back side of the main body 1 .

As described with reference to FIG. 6, the light source unit 2 includes: a substrate 21 and a plurality of light emitting elements 22, and the plurality of light emitting elements 22 are assembled on the substrate 21 (the illustration of the light emitting element 22 is omitted in FIG. 2 ). ). The board|substrate 21 is arrange|positioned so that four arc-shaped board|substrates 21 which have a predetermined width dimension may be spliced, and this board|substrate 21 is formed in substantially circular ring shape as a whole. That is, the substantially annular substrate 21 as a whole includes four divided substrates 21 .

Thus, by using the divided substrate 21 , thermal shrinkage can be absorbed by the divided portion of the substrate 21 , and deformation of the substrate 21 can be suppressed. In addition, although it is preferable to use the board|substrate 21 divided into several, it is also possible to use the board|substrate integrally formed in substantially circular ring shape.

The substrate 21 includes a flat plate of glass epoxy resin (FR-4) as an insulating material, and a wiring pattern (pattern) is formed with copper foil on the surface side. In addition, a white resist layer is formed on the wiring pattern, that is, on the surface of the substrate 21, and this white resist layer functions as a reflective layer. Furthermore, when the material of the substrate 21 is an insulating material, a ceramics material or a synthetic resin material can be used. Furthermore, when the substrate 21 is made of a metal substrate, a base substrate made of a metal made of an insulating layer laminated on aluminum or the like has good thermal conductivity and excellent heat dissipation can be applied. One side of the base plate.

The light emitting element 22 is an LED, and is a surface mount type LED package. Along the circumferential direction of the plurality of annular substrates 21 , that is, substantially on the circumference around the mounting portion 6 , the LED packages are mounted in multiple rows. In this embodiment, the above-mentioned LED packages are mounted over two rows on the inner peripheral side and the outer peripheral side. In addition, an LED package whose luminous color is daylight color N and an LED package whose luminous color is light bulb color L are used as the LED package, the LED packages are arranged alternately, and the adjacent light-emitting elements 22 of each row are roughly spaced apart from each other. Arranged at equal intervals. By adjusting the current and the like flowing into the LED packages of the daylight color and the bulb color, color toning can be performed.

Furthermore, a light emitting element 22a for a nighttime light is mounted on a specific substrate 21a (the right side in FIG. 3 and the upper right side in FIG. 6 ). As the light-emitting element 22a, an LED package identical to that of a bulb-colored LED package in the main light source assembled in a ring shape is used. In this way, generalization of components is realized.

Furthermore, it is not necessarily necessary to mount the light emitting elements 22 in multiple rows. For example, the light emitting elements 22 may be mounted in a row along the circumferential direction. The number of columns or the number of light emitting elements 22 can be appropriately set according to desired output.

The LED package generally includes: an LED chip (chip), which is arranged on a body formed of ceramics or synthetic resin; and a translucent resin for mold (mold) such as epoxy resin or silicone resin, The LED chip is sealed. The LED chip is a blue LED chip that emits blue light. Phosphor is mixed into the light-transmitting resin to emit sunlight-colored or light-bulb-colored light.

Furthermore, for LEDs, LED chips can be directly mounted on the substrate 21 , and cannonball-shaped LEDs can also be mounted, and the mounting method or form is not particularly limited.

The diffusion member 3 is a lens member. As described above with reference to FIG. The arrangement of the light emitting elements 22 is integrally formed in a substantially annular shape, and the diffusion member 3 is disposed so as to cover the entire surface of the substrate 21 including the light emitting elements 22 .

In addition, as typically shown in FIGS. 5 and 7 , the lens member has two protruding strips 31 formed continuously along the circumferential direction in the substantially annular inner and outer peripheral portions facing the light-emitting element 22 . The protrusions 31 are mountain-shaped and have a fixed cross-sectional shape. A U-shaped groove 32 is formed continuously along the circumferential direction inside the protrusion 31 . Therefore, the U-shaped groove 32 is arranged to face the plurality of light-emitting elements 22 , and the plurality of light-emitting elements 22 are accommodated in the U-shaped groove 32 and covered.

Furthermore, a flat portion 33 extending from the protrusion 31 in the width direction is formed so as to cover the entire surface of the substrate 21 .

According to the lens member configured as described above, as shown in FIG. 5 , the light emitted from the plurality of light emitting elements 22 is diffusely radiated mainly in the inner peripheral direction and the outer peripheral direction on the circumference by the protrusions 31 . That is, the light emitted from the light emitting element 22 is mainly radiated so as to diffuse in a radial direction with the center of the circular ring where the light emitting element 22 is arranged as the origin.

Therefore, the uniformity of the irradiated light composed of the light emitted from the plurality of light emitting elements 22 can be improved by the lens member. Furthermore, graininess caused by the brightness of each light emitting element 22 can be suppressed. In this case, it is desirable to set the light distribution angle due to diffusion to about 120° to 160°.

In addition, since the flat portion 33 is formed in the diffusion member 3 to cover the entire surface of the substrate 21, the charging portion is covered and protected by the diffusion member 3 having reinforced insulation performance.

In addition, the diffusion member 3 may not be integrally formed in a substantially annular shape. For example, corresponding to the divided substrates 21 , the diffusion member 3 may be formed separately for the substrates 21 . In this case, the diffusion member 3 continuously covers the plurality of light emitting elements 22 mounted on one substrate 21 .

In addition, the diffusion member 3 is not limited to a lens member, and a diffusion sheet or the like may be applied.

In the light source unit 2 constructed in this way, as typically shown in FIGS. 4 and 5 , the substrate 21 is located around the mounting portion 6, and the mounting surface of the light emitting element 22 is arranged to face the front side, that is, to illuminate downward. direction. In addition, the back surface side of the substrate 21 is attached so as to be in close contact with the flat portion 12 on the inner surface side of the main body 1 , in surface contact with the flat portion 12 . Specifically, from the front surface side of the substrate 21, the diffusion member 3 is superimposed on the substrate 21, and the diffusion member 3 is mounted on the main body 1 using a fixing unit such as a screw S for example, whereby the substrate 21 sandwiches the substrate 21. Inserted between the main body 1 and the diffusion member 3, and fixed by pressing. That is, the substrate 21 and the diffusion member 3 are fastened together by one screw S. As shown in FIG.

Therefore, the substrate 21 is thermally coupled to the main body 1 , and the heat from the substrate 21 is conducted from the back side to the main body 1 and released. Furthermore, the surface contact between the substrate 21 and the main body 1 is not limited to the case where the entire surface of the substrate 21 is in contact with the main body 1 . Partial surface contact is also possible.

In addition, since the flat portion 33 of the diffusion member 3 is in surface contact with the mounting surface side of the substrate 21 so as to be in close contact with the mounting surface side of the substrate 21, heat is conducted from the mounting surface side of the substrate 21 to the diffusion member 3. , so that heat can be dissipated via the diffusion member 3 . That is, heat can also be dissipated from the front surface side of the substrate 21 .

As shown in FIGS. 2 to 4, the lighting device 4 includes: a circuit board 41; Part 42. The circuit board 41 is formed in a substantially arc shape so as to surround the mounting portion 6 , is electrically connected to the adapter A side, and is connected to a commercial AC power supply via the adapter A. Therefore, the lighting device 4 receives the AC power supply to generate a DC output, and supplies the DC output to the light emitting element 22 via a wire, and controls the lighting of the light emitting element 22 .

The lighting device 4 as described above is disposed between the mounting portion 6 and the light source portion 2 (that is, the substrate 21 ).

As shown in FIGS. 2 and 4 , the lighting device cover 5 is formed into a substantially short cylindrical shape by metal material such as cold-rolled steel plate, and is attached to the main body 1 so as to cover the lighting device 4 . The side wall 51 is inclined so as to widen toward the back side, and the opening 53 is formed in the front wall 52 so as to correspond to the mounting portion 6 . Therefore, part of the light emitted from the light emitting element 22 is reflected to the front surface side by the side wall 51 and is effectively used. In addition, an arc-shaped guide recess 54 recessed toward the back side is formed on the periphery of the opening 53 .

The attachment part 6 is an adapter guide formed in a substantially cylindrical shape, and an engaging opening 61 is provided at the center of the adapter guide, and the adapter A is inserted and engaged with the engaging opening 61 . The adapter guide is arranged to correspond to the opening 11 formed in the central portion of the body 1 . A base is formed on the outer periphery of the adapter guide so as to protrude from the outer periphery, and electrical components such as an infrared remote control (remote control) signal receiving unit or an illuminance sensor (sensor) are arranged on the base. Auxiliary parts 62.

Also, the mounting portion 6 does not necessarily have to be a member referred to as an adapter guide or the like. The installation part 6 may be, for example, an opening formed in the main body 1, etc. In short, the installation part 6 refers to a member or a member that faces the hanging ceiling body Cb as a wiring appliance and is engaged by the adapter A. part.

The cover member 7 is formed in a substantially circular shape from a light-transmitting, opalescent, and diffusible material such as acrylic resin, and a light-impermeable circular decorative cover 71 is attached to the center. In addition, in the decorative cover 71 , a substantially triangular light-transmitting light receiving window 72 is formed so as to face the electrical auxiliary component 62 . In addition, a protruding pin (pin) 73 protruding in the direction of the inner surface is formed at an offset center on the inner surface side of the cover member 7 .

Furthermore, the cover member 7 is detachably attached to the outer peripheral portion of the main body 1 so as to cover the front side of the main body 1 including the light source unit 2 . Specifically, as shown in FIG. 8, by rotating the cover member 7, the cover mounting fitting 74 (shown in FIGS. Fitting is carried out by fitting the cover supporting fitting 75 arranged in the recessed portion 14 of the outer peripheral portion of the main body 1 . In addition, when the cover member 7 is removed, the cover member 7 is rotated in the direction opposite to that at the time of installation, and the cover mounting fitting 74 and the cover support fitting 75 are disengaged, whereby the cover member 7 can be removed. .

In this way, when the cover member 7 is attached to the main body 1 , as shown mainly in FIG. 4 , the inner surface side of the cover member 7 comes into surface contact with the front wall 52 of the lighting device cover 5 . Therefore, heat generated by the lighting device 4 and the like can be conducted to the lighting device cover 5 , and then the heat can be conducted to the cover member 7 to promote heat dissipation.

In addition, the distance between the diffusion member 3 and the cover member 7 is set to 20 mm to 60 mm, preferably 30 mm to 50 mm. Thereby, the uniformity of the irradiated light is improved, and the heat conducted from the mounting surface side of the substrate 21 to the diffusion member 3 is effectively released via the cover member 7 .

Here, the cover member 7 is attached to the main body 1 by turning the cover member 7 , but it is necessary to align the position of the light receiving window 72 so that the position of the electric auxiliary part 62 faces. Therefore, in the present embodiment, position regulating means is configured.

The position limiting means will be described with reference to FIG. 9( a ) and FIG. 9( b ). 9( a ) and FIG. 9( b ) are plan views schematically showing the relative positional relationship between the rotating cover member 7 side and the main body 1 side in a fixed state.

First, as shown in FIG. 9( a ), on the cover member 7 side, cover attachment fittings 74 are provided at three places on the back side peripheral edge. In addition, a protruding pin 73 is provided at a position deviated from the center. On the other hand, on the main body 1 side, cover support fittings 75 are provided at three places on the outer peripheral edge, and guide recesses 54 for the lighting device cover 5 attached to the main body 1 are provided.

In the state shown in FIG. 9( a ), the protruding pins 73 are fitted into the guide recesses 54 (see also FIG. 4 ). Therefore, the cover member 7 is disposed at an appropriate position, and from this state, the cover member 7 is rotated clockwise, whereby the protruding pin 73 moves along the guide recess 54 as shown in FIG. 9( b ), and The cover attachment fitting 74 is engaged with the cover support fitting 75 , and the cover member 7 is attached to the main body 1 . Furthermore, in this state, the light receiving window 72 is located at a position facing the electrical auxiliary component 62, so that, for example, the infrared remote control signal receiver can receive a control signal from the infrared remote control transmitter.

That is, at the mounting position where the light receiving window 72 is not positioned to face the electrical auxiliary component 62 , the protruding pin 73 does not fit into the guide recess 54 , so the position is restricted so that the cover member 7 cannot be mounted on the main body 1 .

The adapter A is electrically and mechanically connected to the suspended ceiling body Cb provided on the ceiling surface C through the hanging blade provided on the upper surface side, and the adapter A has a substantially cylindrical shape. The pair of locking portions A1 are provided on both sides of the peripheral wall so as to always protrude toward the outer peripheral side by a built-in spring. The locking portion A1 is inserted into the adapter A by operating a lever provided on the lower surface side of the locking portion A1. In addition, a power cord (cord) connected to the lighting device 4 is led out from the adapter A, and is connected to the lighting device 4 via a connector (see FIG. 3 ).

Next, an attached state when the lighting fixture is attached to the ceiling surface C will be described with reference to FIG. 4 . First, the adapter A is electrically and mechanically connected to the suspended ceiling body Cb which is installed on the ceiling surface C in advance. From this state, while aligning the engaging port 61 of the adapter guide as the mounting portion 6 with the adapter A, push the appliance body upwards from below until the locking portion A1 of the adapter A is securely locked. Engage with the engaging port 61 of the adapter guide so as to perform the installation operation. Next, the cover member 7 is attached to the main body 1 . The installation completed state is the state shown in FIG. 4 , at this time, the elastic member 15 is interposed between the ceiling surface C and the back side of the main body 1 in an adhesive state, and the lighting fixture is in a fixed state on the ceiling surface C.

In addition, when detaching the lighting fixture, the cover member 7 is detached, and then the operation lever provided on the adapter A is operated to disengage the locking portion A1 of the adapter A, thereby, The lighting fixture can be removed.

In the state where the lighting fixture is mounted on the ceiling surface C, power is supplied to the lighting device 4 , and then the light emitting elements 22 are energized through the substrate 21 to light each light emitting element 22 . The light emitted from the light emitting elements 22 is diffused in the radial direction by the diffusion member 3 that continuously covers the plurality of light emitting elements 22 , and is radiated to the front surface side. The light radiated to the front side passes through the cover member 7 and is irradiated outward. Therefore, the uniformity of irradiated light can be improved, and the grainy feeling caused by the brightness of each light emitting element 22 can be suppressed.

In addition, part of the light directed toward the inner peripheral side in the radial direction is effectively utilized by being reflected on the front surface side by the inclined side wall 51 in the lighting device housing 5 .

Furthermore, since the cover support fitting 75 is disposed on the step portion 13 formed on the outer periphery of the main body 1, the amount of protrusion protruding to the front surface side is small, thereby preventing the cover support fitting 75 from becoming a part of the light emitted from the light emitting element 22. obstacle.

On the other hand, since the back side of the substrate 21 is in surface contact with the main body 1, the heat generated by the light emitting element 22 is effectively conducted to the main body 1 to dissipate heat over a large area. In addition, in the vicinity of the outer peripheral side of the substrate 21, a step portion 13 is formed along the outer periphery of the substrate 21. Therefore, the heat dissipation area can be increased by the step portion 13, so that the heat dissipation of the outer peripheral portion of the main body 1 can be improved. The effect is improved. In addition, the step portion 13 can have the effect of strengthening the main body 1 .

In addition, since the lighting device 4 is disposed between the mounting portion 6 and the substrate 21 , the influence of heat from the substrate 21 on the lighting device 4 is reduced. The reason is that there is a tendency that the heat of the substrate 21 is conducted toward the outer periphery of the main body 1 and then released.

Furthermore, since the cover member 7 is in surface contact with the lighting device cover 5, heat generated in the lighting device 4 can be conducted to the lighting device cover 5, and then the heat can be conducted to the cover member 7 and released.

In addition, since the flat portion 33 of the diffusion member 3 is in surface contact with the mounting surface side of the substrate 21 , the mounting surface side of the substrate 21 can also dissipate heat from the front surface side via the diffusion member 3 . In addition, in this case, since the diffusion member 3 covers the entire surface of the substrate 21, the charging portion is protected.

As described above, according to the present embodiment, it is possible to provide a lighting fixture in which the substrate 21 is located around the mounting portion 6 and the mounting surface of the light-emitting element 22 is arranged to face the front surface side. The temperature rise of the light emitting element 22 is effectively suppressed. In addition, it is possible to provide a lighting fixture provided with the diffusion member 3 that continuously covers the light emitting elements 22, whereby the uniformity of irradiated light can be improved.

Also, as described above, according to the present embodiment, it is possible to provide a lighting fixture using the light emitting element 22 as a light source and detachably attaching the cover member 7 to the main body 1, so that the inside can be easily cleaned. In addition, since the cover member 7 has diffusivity, the highly directional light emitted from the light emitting element 22 can be diffused to obtain uniform irradiation light. Furthermore, since the cover support fitting 75 as a cover support member is arranged on the step portion 13 , it is possible to suppress the cover support fitting 75 from being an obstacle to the light emitted from the light emitting element 22 .

In addition, this invention is not limited to the structure of each said embodiment, In the range which does not deviate from the summary of invention, various deformation|transformation is possible. For example, a solid-state light-emitting element such as LED or organic EL can be used as the light-emitting element. In this case, the number of light-emitting elements is not particularly limited.

Claims (13)

1. A lighting fixture, characterized in that it comprises: The main body has an installation portion facing the wiring appliance provided on the appliance installation surface; The substrate is located around the installation part, the assembly surface faces the front surface side, and the back side is arranged to be in surface contact with the body; And a plurality of light emitting elements assembled on the substrate. 2. The lighting fixture according to claim 1, wherein a lighting device for controlling lighting of the light emitting element is arranged between the mounting portion and the substrate. 3. The lighting fixture according to claim 1 or 2, wherein a stepped portion is formed along the outer periphery of the substrate in the vicinity of the outer peripheral side of the substrate in the main body. 4. The lighting fixture according to claim 2, wherein a lighting device cover for covering the lighting device is provided between the main body and a cover member, and the cover member covers the front of the main body. The surface side is covered, and at least a part thereof has translucency, and the cover member is in surface contact with the lighting device cover. 5. The lighting fixture according to claim 3, wherein a lighting device cover for covering the lighting device is provided between the main body and a cover member, and the cover member covers the front of the main body. The surface side is covered, and at least a part thereof has translucency, and the cover member is in surface contact with the lighting device cover. 6. The lighting fixture according to claim 1, characterized in that it comprises: A diffusion member that continuously covers at least two or more light emitting elements among the plurality of light emitting elements. 7. The lighting fixture according to claim 6, characterized in that: A plurality of the light emitting elements are disposed on a circumference centered on the mounting portion, and the diffusion member is configured to continuously cover the plurality of light emitting elements. 8. The lighting fixture according to claim 6 or 7, characterized in that: The diffusion member includes a protruding portion facing the light emitting element, and flat portions covering the substrate are formed from both ends of the protruding portion. 9. The lighting fixture according to claim 6 or 7, characterized in that: The diffusion member has reinforced insulation properties. 10. The lighting fixture according to claim 8, characterized in that: The diffusion member has reinforced insulation properties. 11. The lighting fixture according to claim 1, characterized in that it comprises: A light-transmitting cover member is detachably attached to the outer peripheral portion of the main body and covers the light-emitting element with a predetermined distance therebetween. 12. The lighting fixture according to claim 11, characterized in that: The light emitted from the light-emitting element is directed toward the front surface side, and the light-transmitting cover member has diffusivity. 13. The lighting fixture according to claim 11 or 12, characterized in that: A stepped portion facing the rear side is formed on the outer peripheral portion of the main body, and a cover support member to which the translucent cover member is detachably attached is disposed on the stepped portion.

Images