JP2014044877A - Lighting apparatus - Google Patents

Abstract

Provided is a lighting device that includes a light source device in which a light source and a lighting device are integrated, is small, has high heat dissipation, and has less unnecessary high-frequency noise.
A light source substrate 33 having a mounting surface 33a for mounting an LED 34, a plate-like first flat plate portion 36a, a plate-like second flat plate portion 36b facing the first flat plate portion 36a, and a first A plate-shaped connecting portion 36c that connects the first flat plate portion 36a and the second flat plate portion 36b, and is opposite to the surface of the first flat plate portion 36a facing the second flat plate portion 36b. The first outer side surface, which is the side surface, is fixed to the light source substrate 33 so as to be in close contact with the back surface of the mounting surface, and the lighting device 35 for lighting the LED 34 is disposed inside. The light source device 30 includes the instrument main body 14, and the light source device 30 is opposite to the surface of the second flat plate portion 36 b of the envelope 36 that faces the first flat plate portion 36 a. The second outer surface, which is the surface of the device, is in close contact with the main body inner surface 14 a of the instrument main body 14.
[Selection] Figure 3

Description

  The present invention relates to a luminaire including a light source such as a light emitting diode (hereinafter referred to as LED).

  The device disclosed in Patent Document 1 is a conventional technique using a light emitting device using LEDs. 2A and 2B of the patent document are examples in which a light-emitting device using an LED as a light source is used for a downlight lighting fixture. In this apparatus, the lighting fixture includes a light emitting device including a substrate on which the LED is mounted, a case provided in the lighting fixture and having a heat dissipation function, and a lighting device that lights the LED of the light emitting device.

  The lighting device includes a lighting circuit for supplying a direct current from the external power source to the LED of the light emitting device. The lighting device is separated from the light emitting device and attached to the case of the lighting fixture, and generates a predetermined direct current from an external power source. The lighting device inputs the generated direct current from the output terminal to the light emitting device on which the LED is mounted by the internal wiring of the lighting fixture. Further, the case has a partition plate for attaching the light emitting device, and radiates heat of the light emitting device.

  In the device disclosed in Patent Document 1 configured as described above, when an external power source such as a commercial AC power source is supplied, the lighting device supplies a predetermined direct current to the LED of the light emitting device, and the LED lights up. . Thereby, the light emitted from the light emitting device irradiates the outside from the lighting fixture according to the predetermined light distribution characteristic. At this time, the LED of the light emitting device generates heat as light is generated. The generated heat is transmitted from the board on which the LED is mounted to the case, and is radiated to the outside of the lighting fixture.

JP 2012-84733 A (FIGS. 2A and 2B)

  However, in the device disclosed in Patent Document 1, the lighting device and the light emitting device are separated, and a space for housing the lighting device is required in the case, so that the shape of the entire lighting fixture tends to be large. There is a problem.

  Moreover, since the light emitting device and the lighting device are separated, there is a problem that unnecessary high-frequency noise from the lighting fixture tends to increase. For example, the unnecessary high-frequency noise is generated when the high-frequency noise generated by the high-frequency switching operation in the lighting circuit of the lighting device is conducted through the input wiring from the lighting device substrate or the external power source, the output wiring on the DC side, or the like. Is generated.

  The present invention is configured by integrating a light source and a lighting device, and includes a light source device provided with an input unit of an external power source, downsizing an instrument, high heat dissipation, and less unnecessary high-frequency noise. It aims at providing a lighting fixture.

  A luminaire according to the present invention includes a light source substrate including a mounting surface for mounting a light source, a plate-like first flat plate portion, a plate-like second flat plate portion facing the first flat plate portion, A plate-like connecting portion connecting the first flat plate portion and the second flat plate portion, the opposite side of the surface of the first flat plate portion facing the second flat plate portion; A lighting device for lighting the light source is fixed to the light source substrate so that a first outer surface, which is a surface of the mounting surface, is in close contact with the back surface of the mounting surface. A light source device including an envelope disposed between the two flat plate portions and an instrument main body having a mounting surface, wherein the light source device is included in the second flat plate portion of the envelope. The second outer surface, which is the surface opposite to the surface facing the first flat plate portion, is in close contact with the mounting surface of the instrument body. To.

  According to the present invention, by integrating the light source substrate and the envelope on which the lighting device is arranged and mounting the light source device on the instrument body, the device can be miniaturized and unnecessary high frequency noise can be reduced.

1 is a perspective view of a lighting fixture 100 according to Embodiment 1. FIG. It is the schematic of the AA cross section of the lighting fixture 100 which concerns on Embodiment 1. FIG. It is BB sectional drawing of the lighting fixture 100 which concerns on Embodiment 1. FIG. It is a figure which shows the structure of the light source device support part 20 which concerns on Embodiment 1, (a) is an exploded perspective view of the light source device support part 20, (b) is the attachment state of the light source device support part 20 and the power receiving part 32 FIG. It is a figure which shows the attachment state of the light source device 30 which concerns on Embodiment 1, and the light source device support part 20. FIG. It is the schematic diagram of the cross section which looked at the light source device 30 of the state in which the light source device 30 which concerns on Embodiment 1 is attached to the instrument main body 14 from the C direction (refer FIG. 2). 5 is a schematic cross-sectional view of a light source device 301 according to Embodiment 2. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of each embodiment, the directions such as “up”, “down”, “left”, “right”, “front”, “back”, “front”, “back” are However, it is not intended to limit the arrangement or orientation of devices, instruments, parts, or the like.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 100 according to the present embodiment. FIG. 2 is a schematic diagram of an AA cross section of the lighting apparatus 100 according to the present embodiment.

  As shown in FIGS. 1 and 2, the lighting fixture 100 includes a light source device 30, a fixture structure 11, a reflector 12, a light output surface 13, and a fixture body 14. The lighting fixture 100 is, for example, a type of lighting fixture called a spotlight or a projector. The light output surface 13 of the luminaire 100 is rectangular, but may be square. Alternatively, the luminaire using the light source device 30 can be applied not only to a rectangular illumination surface (light output surface 13) but also to a luminaire having a circular outer periphery such as a general downlight.

  The light source device 30 is a device that emits light when a power is supplied from an external power source. The detailed structure of the light source device 30 will be described later.

  As shown in FIG. 2, the light source device 30 is attached to a surface of the instrument main body 14 on the light output direction (P direction) side (hereinafter referred to as a main body inner surface 14 a of the instrument main body 14). The reflector 12 is formed in the light output direction from the inner surface of the main body and distributes light emitted from the light source device 30. The instrument structure 11 is attached to the back surface (main body outer surface 14b) of the light source mounting surface. Alternatively, the instrument structure 11 and the instrument body 14 may be integrated. That is, the surface of the instrument structure 11 on the light source device 30 side may be the instrument body 14.

  As shown in FIGS. 1 and 2, the light source device 30 is disposed in the back of the lighting fixture 100. Light is emitted from the light source device 30 in the P direction. Moreover, when using the front surface (light output surface 13) of the lighting fixture so as to irradiate the lighting fixture 100 upward, for example, a cover such as a glass plate may be appropriately provided as necessary. . Alternatively, for example, when the lighting apparatus 100 is used to irradiate downward, there is no need to have a cover in order to lower the temperature of the LED.

  FIG. 3 is a BB cross-sectional view of lighting fixture 100 according to the present embodiment. The lighting fixture 100 will be described in more detail with reference to FIG.

  The luminaire 100 is connected to the external power source 4. The external power source 4 is, for example, a commercial AC power source. Or as long as it can produce | generate the direct current which lights LED34, you may receive electric power from a solar cell or another DC power supply, for example.

  In the instrument structure 11, a device such as a power terminal block for receiving the external power supply 4 is disposed. The instrument structure 11 may have a case shape capable of housing a device such as a power terminal block, or may have a structure to which a device such as a power terminal block can be attached. The surface of the instrument structure 11 on the light source device 30 side is an instrument body 14. Alternatively, the surface on the light source device 30 side of the instrument structure 11 and the main body outer surface 14b of the instrument main body 14 may be in contact and fixed. In the present embodiment, it is assumed that the instrument structure 11 and the instrument body 14 are integrally formed, and the surface of the instrument structure 11 on the light source device 30 side is the instrument body 14.

The light source device 30 includes a light source substrate 33, an LED 34, a lighting device 35, an envelope 36, and a power reception unit 32.
The light source substrate 33 mounts the LEDs 34 on a mounting surface that is a surface on the P direction side. The LED 34 can function as a point light source if it is arranged in the center of the mounting surface 33a of the light source substrate 33 using a COB (Chip / on / Board) technique or the like. However, the plurality of LEDs 34 may be appropriately distributed on the mounting surface 33 a of the light source substrate 33.

  The lighting device 35 is housed in the envelope 36, generates a direct current with the power supplied from the external power supply 4, and lights the LED 34. The lighting device 35 has a function of supplying a predetermined direct current to the LED 34. For example, the lighting device 35 includes a converter that converts a commercial AC power supply (external power supply 4) into a DC current from a rectified DC voltage. It's okay.

  The envelope 36 is in close contact with the back surface of the mounting surface of the light source substrate 33 and in close contact with the main body inner surface 14 a of the instrument main body 14. The envelope 36 includes a plate-like first flat plate portion 36a, a plate-like second flat plate portion 36b facing the first flat plate portion 36a, the first flat plate portion 36a, and the second flat plate portion 36a. It has a plate-like connecting portion 36c that connects the flat plate portion 36b. The envelope 36 is formed of a metal plate, and has a box shape including a first flat plate portion 36a, a second flat plate portion 36b, and four connection portions 36c. In the envelope 36, the first outer surface 36d, which is the surface opposite to the surface facing the second flat plate portion of the first flat plate portion 36a, is in close contact with the back surface 33b of the mounting surface. The light source substrate 33 is fixed. Further, in the envelope 36, a lighting device 35 for lighting the LED 34 is disposed between the first flat plate portion 36a and the second flat plate portion 36b.

  The power receiving unit 32 has conductivity, is electrically insulated from the light source substrate 33, and is attached to the light source substrate 33. When the power receiving unit 32 is physically fixed to a power supply unit 21 of the light source device support unit 20 described later, the light source device 30 is fixed to the instrument body 14 by the light source device support unit 20. The power receiving unit 32 is electrically connected to a power feeding unit 21 of the light source device support unit 20 described later. Furthermore, the power reception unit 32 is electrically connected to the lighting device 35 disposed inside the envelope 36. In the following description, it is assumed that the power receiving unit 32 includes a power receiving means (power receiving means).

  As shown in FIG. 3, the power receiving unit 32 protrudes from both end portions of the light source substrate 33, but has conductivity and is electrically insulated from the light source substrate 33. As long as the power supply unit 21 and the lighting device 35 are electrically connected to each other, the shape, the arrangement position, and the like may be any.

  The lighting fixture 100 includes a light source device support 20 that supports the light source device 30 on the fixture body 14. The light source device support portion 20 is fixed to a support main body portion 24 having a shape extending in the longitudinal direction, and a main body inner surface 14a (attachment surface) of the instrument main body 14 provided at one end portion of the support main body portion 24 in the longitudinal direction. And a power supply unit 21 provided at the other end in the longitudinal direction.

  As shown in FIG. 3, the light source device support portion 20 is electrically connected to a power supply terminal block or the like inside the instrument structure 11 via an electric wire 22 or the like, and is externally connected via a power feeding portion 21 or a power receiving portion 32. The power from the power source 4 is supplied to the light source device 30.

  The support main body 24 is, for example, a metal column whose surface is coated with an insulating material. One end is electrically connected to an electric wire connected to a power terminal block or the like, and the other end (the power feeding portion 32). ) May be used to supply power to the power receiving unit 32. Alternatively, the support main body 24 may be inserted into a rod-shaped column made of an insulating material so that the conductor penetrates from one end to the other end. Alternatively, as will be described later, an electric wire or a conductor having a cavity inside and penetrating the cavity of the support main body portion 24 from one end portion to the other end portion via the power feeding portion 21 and the power receiving portion 32. The light source device 30 may be powered.

  As described above, since the power feeding unit 21 and the power receiving unit 32 are physically fixed and electrically connected, the conductor passing through the inside of the support body 24, the power feeding unit 21, and the power receiving unit 32 are used. Then, power is supplied from the external power source 4 to the lighting device 35.

  The reflector 12 has a role of an optical reflection function with respect to the light emitted from the LED 34. When the LED 34 of the light source device 30 has a necessary light distribution characteristic by a lens or the like, the role of such an optical reflection function is small.

  4A and 4B are diagrams illustrating an example of the structure of the light source device support unit 20 according to the present embodiment. FIG. 4A is an exploded perspective view of the light source device support unit 20, and FIG. It is a figure which shows an attachment state with the part.

  The structure of the light source device support 20 and the light source device 30 will be described in detail with reference to FIG. In FIG. 4B, the power reception unit 32 is fixed to the light source device 30, but only the power reception unit 32 is illustrated here, and the light source device 30 is omitted.

  As shown in FIG. 4A, the light source device support portion 20 includes a hollow support body portion 24 formed of an insulating member such as resin, for example. The support main body portion 24 has a hollow quadrangular prism shape and includes an attachment portion 23 for attachment to the instrument main body 14 at one end portion. The light source device support 20 has an opening 25 at the other end, and the power feeding unit 21 is attached to the opening 25.

  The attachment portion 23 is a portion protruding from a part of the edge portion of one end face of the support main body portion 24 in a direction orthogonal to the longitudinal direction of the support main body portion 24. The attachment portion 23 is provided with a screw hole 23a so that the support main body portion 24 can be attached to the instrument main body 14 using screws. The attachment part 23 is fixed by means such as a tool main body 14 (or the tool structure 11) and a screw, for example.

  In addition, a power feeding unit 21 formed of a conductive metal piece or the like is provided on the head (the other end) of the light source device support unit 20. As shown to Fig.4 (a), the electric power feeding part 21 is the electroconductive metal piece bent by the cross-sectional L-shape. The power feeding unit 21 is fixed to the end of the support main body 24 so that one L-shaped piece is inserted into the support main body 24 and the other piece closes the opening 25 of the support main body 24. Yes.

  As shown in FIG. 4B, the support main body 24 is attached by screwing the attachment portion 23 to the instrument main body 14. The electric wire 22 having a jacket is electrically connected to one piece of the power feeding unit 21 inserted into the support main body 24 inside the support main body 24. The electric wires 22 are wired inside the appliance structure 11 through the hollow internal space of the support main body 24, and are connected to the external power supply 4 from the outside inside the appliance structure 11. Moreover, the electric power feeding part 21 is provided with the screw hole 21a, for example. The power feeding unit 21 and the power receiving unit 32 are fixed by screwing or the like. Alternatively, the power feeding unit 21 and the power receiving unit 32 may have a press-fitting shape or the like, and may be fixed by press-fitting a rivet or the like into the press-fitting shape between the power feeding unit 21 and the power receiving unit 32. The power feeding unit 21 fixes the power receiving unit 32 and closely contacts the envelope 36 and the instrument structure 11.

  If the power supply unit 21 includes the screw hole 21a and the conductive metal piece that is the power supply unit 21 can be adjusted and moved in the longitudinal direction in the support main body 24, the instrument structure 11 and the envelope 36 Adhesion can be further improved to improve the heat dissipation effect.

  Moreover, although the steel plate processing etc. which are made from iron may be used for the instrument structure 11, in order to apply to this Embodiment, in order to further improve a heat conductive effect, the envelope 36 of the instrument structure 11 is used. If a material having high thermal conductivity such as an aluminum plate is arranged on the surface (main body inner surface 14a) in contact with the aluminum plate and an envelope is attached to the aluminum plate, the temperature of the LED is reduced.

  FIG. 5 is a diagram illustrating a state in which the light source device 30 according to the present embodiment is attached to the light source device support portion 20. FIG. 6 is a schematic cross-sectional view of the light source device 30 in a state where the light source device 30 according to the present embodiment is attached to the instrument main body 14 as viewed from the C direction (see FIG. 2).

  The light source substrate 33 mounts the LED 34 on the mounting surface 33a. The light source substrate 33 is in close contact with the power receiving section 32 having power receiving means formed of a conductive metal piece or the like, and is further in contact with an envelope 36 that houses the lighting device 35 therein. Here, the power receiving section 32 has both surfaces insulated from the power receiving means, and is in contact with the light source substrate 33 and the envelope 36. In this insulating method, an insulating sheet or the like may be interposed therebetween.

  The envelope 36 is made of a metal material. The envelope 36 is attached to the back surface 33b of the mounting surface 33a of the light source substrate 33 by screws or the like. The power receiving unit 32 is, for example, a metal piece whose surface is coated with an insulating member. The power receiving unit 32 and the lighting device 35 inside the envelope 36 may be electrically connected by an electric wire, or may be connected by a connection pin or the like, for example. The power receiving unit 32 is insulated from the light source substrate 33 and the envelope 36 and is electrically connected to the lighting device 35.

  The envelope 36 may have a box shape and enclose a filling material having insulating performance. Encapsulating a filling material having insulating performance in the envelope 36 increases the heat capacity and improves the heat transfer performance, which is effective in reducing the temperature of the LED 34. The filling material may not be an amount for filling the entire circuit components of the lighting device 35 inside the envelope 36. If part of the circuit components is filled, there is an effect in improving heat conduction.

  The power receiving unit 32 may be fixed to the light source substrate 33 or may be a separate component from the light source substrate 33. In FIG. 6, the power receiving unit 32 is a separate structure from the light source substrate 33, but the light source substrate 33 may include power receiving means. In that case, since an external power source is applied to the conductive metal piece serving as the power receiving means, the LED 34 that supplies a direct current is insulated. When the light receiving means is provided on the light source substrate 33, when the heat generated from the LED 34 is conducted to the envelope 36 via the light source substrate 33, the heat receiving portion 32 having a different structure is not passed, so that the thermal resistance can be reduced and the heat dissipation efficiency can be improved. The heat of the LED 34 can be reduced.

  As shown in FIG. 6, the metal piece which is the power receiving unit 32 is sandwiched between the light source substrate 33 and the first flat plate portion 36a of the envelope 36, and the light source substrate 33, the power receiving unit 32, the P1 portion, The light source device 30 may be formed by fastening the flat plate portion 36a of the first plate together with screws or the like at the P1 portion.

  In the light source device 30, a pair of power reception units 32 are fixed to the power feeding unit 21 of the pair of light source device support units 20 with screws or the like (P2 portion) and can receive power. Furthermore, the second flat plate portion 36b of the envelope 36 is brought into close contact with the instrument body 14 by fastening the pair of power receiving units 32 and the power feeding unit 21 of the pair of light source device support units 20 with screws or the like.

  When the power receiving unit 32 is fixed to the light source device support unit 20, the envelope 36 is brought into contact with the instrument structure 11 (the instrument body 14) together with electrical connection. The power receiving unit 32 needs to have mechanical strength for bringing the envelope 36 into close contact with the instrument structure 11 (the instrument body 14).

  Further, in order to bring the light source substrate 33 on which the LED 34 is mounted, the power receiving unit 32, or the envelope 36 into close contact, the fixing surface 37 such as a screw or a rivet is used to fix these from the mounting surface 33a side of the light source substrate 33. Two members or three members may be fastened together. For example, the fixing means 37 can be provided on the outer side of the light source substrate 33. Although only one of the light source device support portions 20 is shown in FIG. 5, the light source device support portion 20 is also arranged at a location corresponding to the power receiving portion 32 on the opposite side.

  As described above, the luminaire 100 according to the present embodiment includes the power supply unit 21 made of a conductive metal piece, the light source device support unit 20 having a space therein includes the adjustment element for the fixed position, and the light source The apparatus 30 and the instrument main body 14 (the instrument structure 11) are brought into close contact with each other.

  Moreover, in the lighting fixture 100 which concerns on this Embodiment, the connection between the output of the lighting device 35 and LED34 can also be wired from the lighting device 35. FIG. Alternatively, a connection pin is provided from the light source board 33 side at a location that is relatively far from the location of the LED 34, and a notch is provided in the envelope 36 in the vicinity corresponding to the connection pin so that the connection pin extends from the connection pin to the lighting device 35 side. An electrical connection may be made. With such a structure, there is no wiring outside the envelope 36, which is effective in reducing high frequency noise.

  In the description of FIGS. 3 to 6 above, the light source substrate 33 and the power receiving unit 32 including the power receiving means have different planar structures. However, on the light source substrate 33, for example, the power receiving unit 32 having power receiving means on the mounting surface 33a side may be fixedly held. Of course, the power receiving means and power receiving unit 32 and the LED 34 are electrically insulated. By adopting such a structure, the configuration of the light source device 30 is simplified, so that the conduction and heat dissipation effect from the LED 34 is improved.

  Below, the structure and effect of the lighting fixture 100 are demonstrated.

  As described above, according to the lighting fixture 100 according to the present embodiment, when the external power supply 4 is energized from the fixture structure 11 to the power feeding portion 21 provided at the other end of the light source device support portion 20, The external power supply is received from the power receiving unit 32 of the light source device 30 and the lighting device 35 is energized. Thereby, the lighting device 35 supplies a predetermined direct current to the LED 34, and the LED 34 is lit. At this time, since the back surface of the mounting surface of the light source substrate 33 and the first flat plate portion 36a of the envelope are in close contact, the heat generated by the LED 34 is efficiently transmitted to the envelope 36 through the light source substrate 33. . Further, since the second flat plate portion 36b and the main body inner surface 14a of the instrument main body 14 are in close contact with each other, the heat transmitted to the envelope 36 is efficiently conducted to the instrument main body 14 and the instrument structure 11, and the instrument The heat conducted to the structure 11 is radiated to the outside of the lighting fixture 100.

  Moreover, according to the lighting fixture 100 which concerns on this Embodiment, since the lighting device 35 and the light source substrate 33 which mounts LED34 are adjoining, the lighting device 35 receives the external power supply 4, and produces | generates a direct current. And generation | occurrence | production of the unnecessary high frequency noise at the time of supplying the produced | generated DC output to LED34 can be reduced. Further, since the lighting device 35 is covered with the metal envelope 36, generation of unnecessary high frequency noise to the outside can be further reduced.

  Moreover, according to the lighting fixture 100 which concerns on this Embodiment, since LED34 and the lighting device 35 are comprised integrally, a fixture becomes small, Furthermore, the heat | fever which generate | occur | produced in LED34 was passed through the envelope 36. By efficiently dissipating heat to the outside, the temperature rise of the LED 34 can be reduced.

  Some light sources such as a high-pressure discharge lamp and a fluorescent lamp include an electrode and power receiving means (referred to as a cap or a cap pin) electrically connected to the electrodes at both ends of the lamp. In consideration of the high voltage at the time of power reception, these are provided at both ends when power receiving means are provided at both ends or for the purpose of supporting the weight of the lamp itself. However, the lighting fixture 100 of the present embodiment not only supports its own weight at the same time as power feeding, but also plays a fixing role for conducting heat generated from the LED 34.

  In order to improve the thermal contact between the envelope 36 and the instrument structure 11 and further increase the efficiency of heat conduction, a grease that improves the heat conduction between the envelope 36 and the instrument structure 11 is used. It is preferable to interpose a sheet having flexibility of application or thermal conductivity.

  The lighting fixture according to the present embodiment thermally couples a light source substrate (light emitting means) having a light source such as a light emitting diode, a lighting device that lights the light source board, and an envelope equipped with the lighting device. Thus, the integrated light source device is provided. In addition, when the light source device support portion provided with a power supply portion (power supply means) for supplying power to the lighting device is fixed to the fixture structure (the fixture body) of the lighting fixture, the envelope is supplied when power is supplied to the lighting device. Is in thermal contact with the fixture structure (the fixture body) of the lighting fixture. Thereby, while being able to reduce in size, a lighting fixture with high heat dissipation efficiency and few generation | occurrence | production of high frequency noise can be comprised.

  In the luminaire according to the present embodiment, the light source device includes a power receiving unit (power receiving means) made of a conductive metal piece. The power receiving unit has a function of supplying power to the lighting device, and also has a function of fixing the light source device to the fixture body, thereby simplifying the configuration of the lighting fixture and reducing the size of the fixture.

  As described above, the lighting fixture according to the present embodiment includes a light source device in which a light emitting LED and a lighting device are integrated, so that the fixture is downsized and further integrated to reduce high-frequency noise. Can do. Furthermore, by attaching the light source device to the light source device support portion, electrical connection is facilitated, the contact between the envelope and the lighting fixture is improved, and the temperature of the LED is reduced.

Embodiment 2. FIG.
In the present embodiment, parts different from those of the first embodiment will be described.
FIG. 7 is a schematic cross-sectional view of the light source device 301 in a state where the light source device 301 according to the present embodiment is attached to the instrument main body 14 as viewed from the C direction (see FIG. 2). In FIG. 7, the same functional components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, the cross-sectional shape of the envelope 361 is a substantially U-shape. In the first embodiment, the envelope 36 has a box shape having four connection portions. However, in the present embodiment, the envelope 36 has a shape in which one surface of the box shape is opened. The envelope 361 is formed of a metal plate and includes a first flat plate portion 36a, a second flat plate portion 36b, and three connection portions 36c, and one surface (one of the box-shaped side surfaces) is open. It is a box shape. Alternatively, the envelope 361 may have two side surfaces that are open among the box-shaped side surfaces. In the envelope 361 having this configuration, the generated heat of the LED 34 is transmitted from the continuous portion of the U-shaped envelope (the first flat plate portion 36a, the second flat plate portion 36b, and the connecting portion 36c) to the device main body 14 (the device Conducted to the structure 11) to dissipate heat.

  One surface of the envelope 361 according to the present embodiment is open, and there is an advantage that work such as attachment of the lighting device 35 to the envelope 361 is facilitated.

  In addition, the envelope 361 according to the present embodiment has a contact surface (second flat plate portion 36a) that is a surface that absorbs heat and a contact surface (second surface) that is the surface of the instrument structure 11 that is a surface that dissipates heat. The flat plate portion 36b) may be a flat surface, and the surface (connection portion 36c) for conducting the remaining heat may be provided with unevenness to increase the surface area. The power receiving unit 32 is provided with power receiving means (not shown) for receiving power from the power supply unit 21 of the light source device support unit 20.

  In the present embodiment, the LED light source board is referred to as the light source board. However, the board is not necessarily composed of a single printed board, and a metal board having good thermal conductivity or a combination with other materials is processed. You may form from things.

  In the lighting fixture according to the present embodiment, as long as the dimensions between the power receiving means of the pair of power receiving portions of the light source device are matched so as to fit between the two power feeding portions of the light source device support portion attached to the lighting fixture. Even light source devices with different LED output power can be used for the same lighting device, so that there is an effect of standardizing the lighting device.

  As mentioned above, although embodiment of this invention was described, you may implement in combination of 2 or more among these embodiment. Alternatively, one of these embodiments may be partially implemented. Alternatively, two or more of these embodiments may be partially combined. In addition, this invention is not limited to these embodiment, A various change is possible as needed.

  4 External power source, 11 Instrument structure, 12 Reflector, 13 Light output surface, 14 Instrument body, 14a Body inner surface, 14b Body outer surface, 20 Light source device support part, 21 Power supply part, 21a Screw hole, 22 Electric wire, 23 Mounting part , 23a Screw hole, 24 Support body part, 25 Opening, 30 Light source device, 32 Power receiving part, 32a Screw hole, 33 Light source board, 33a Mounting surface, 33b Back surface, 34 LED, 35 Lighting device, 36 Envelope, 36a 1 flat plate part, 36b 2nd flat plate part, 36c connection part, 36d 1st outer surface, 100 lighting fixture, 301 light source device, 361 envelope.

Claims (6)

A light source substrate having a mounting surface for mounting the light source;
A plate-like connection connecting the plate-like first flat plate portion, the plate-like second flat plate portion facing the first flat plate portion, and the first flat plate portion and the second flat plate portion. A first outer surface, which is a surface opposite to the surface facing the second flat plate portion of the first flat plate portion, is in close contact with the back surface of the mounting surface. And a lighting device that is fixed to the light source substrate and that lights the light source includes an envelope disposed between the first flat plate portion and the second flat plate portion. When,
An instrument body having a mounting surface;
The light source device
Of the second flat plate portion of the envelope, a second outer surface that is the surface opposite to the surface facing the first flat plate portion is in close contact with the mounting surface of the instrument body. A lighting apparatus characterized by that. The lighting fixture is:
A light source device supporting portion having a shape extending in a longitudinal direction, wherein one end portion in the longitudinal direction is fixed to the mounting surface of the instrument body, and the other end portion in the longitudinal direction is fixed to the light source substrate. The lighting apparatus according to claim 1, further comprising: The light source substrate is
The lighting fixture according to claim 2, further comprising a substrate side fixing portion fixed to the other end portion of the light source device support portion. The light source device support is
A hollow shape formed of an insulating member,
The substrate side fixing part is
It is electrically conductive and electrically insulated from the light source substrate and attached to the light source substrate, and is an electric wire that passes through the hollow interior of the light source device support part and is electrically connected to an electric wire connected to a power source. And electrically connected to the lighting device disposed between the first flat plate portion and the second flat plate portion and supplying power from the power source to the lighting device via the electric wire. The lighting fixture according to claim 3. The envelope is
The illumination according to any one of claims 1 to 4, wherein the illumination is formed of a metal plate and has a box shape including the first flat plate portion, the second flat plate portion, and the four connection portions. Instruments. The envelope is
It is formed of a metal plate, and has a box shape in which one surface provided with the first flat plate portion, the second flat plate portion, and the three connection portions is open. The lighting fixture as described in.

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