JP5351817B2 - lighting equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture that facilitates assembling and mounting work while reducing power consumption and extending lifetime by employing a light-emitting element as a light source. <P>SOLUTION: The lighting fixture includes: a fixing tool 2 to be fixed to an object X; a base plate 4 having an LED module 11 arranged on one surface; a power supply cable 5 electrically connected with the LED module 11; and a heat-radiating section 6 having a plurality of heat-radiating fins 22 formed therein, with one end fixed on the fixing tool 2 and the other end is fixed to the base plate 4, while absorbing the heat of the heated base plate 4 at the other end and dissipating it from the heat-radiating fins 22. The heat-radiating section 6 is formed by mutually bonding a pair of separable heat-radiating members 21. Recesses 23 constituting an insertion hole H for inserting the power supply cable 5 in a bonded state are formed on each of the surfaces where the pair of heat-radiating members 21 are bonded to each other. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a lighting fixture configured to be attachable to an attachment object such as a ceiling surface or a beam member.

  For example, Utility Model Registration No. 3154570 discloses various types of lighting fixtures that can be attached to a high ceiling. The lighting fixture according to the device disclosed in this publication is a lighting fixture that uses an HID lamp such as an existing high-pressure mercury lamp or metal halide lamp as a light source for the purpose of reducing power consumption and extending the life (hereinafter referred to as “HID lighting fixture”). And a new lighting fixture body having a fluorescent lamp as a light source is attached to the lamp holder. In this case, the HID lighting fixture includes a lamp holder having an upper end fixed to a ceiling surface or the like and a lamp socket for attaching an HID lamp attached to the lower end, and a lamp shade attached to the lower end of the lamp holder. I have. In this type of HID lighting fixture, the lamp holder is formed in a hollow structure through which the power supply line can be inserted, and the power supply line inserted through the lamp holder is connected to the lamp socket at the lower end of the lamp holder. It is connected.

  On the other hand, in the lighting fixture according to the device disclosed in this publication, a mounting bracket for attaching a new lighting fixture main body by removing the lamp shade and the lamp socket from the existing HID lighting fixture is attached to the lower end of the lamp holder, The luminaire main body is attached to the lower end portion of the lamp holder by engaging the pair of support bases attached to the luminaire main body so as to be hooked on the mounting bracket. In this case, in this lighting apparatus using the existing lamp holder, a new power line is drawn out from the ceiling or the like using a hole for drawing out the power line for the HID lighting apparatus, and the power line is connected to the lamp holder and The mounting bracket is inserted and connected to the luminaire body. As a result, in this lighting fixture, when the HID lighting fixture is converted into a fluorescent-type lighting fixture, the cost required for the retrofit is reduced by discarding only the lamp socket and the lamp shade and reusing the lamp holder. ing.

Utility Model Registration No. 3154570 (page 3-15, Fig. 1-11)

  However, the conventional lighting fixture has the following problems. That is, in the conventional lighting fixture, for the purpose of reducing the power consumption and extending the life, the lighting fixture body having a fluorescent lamp that has a lower power consumption and a longer service life compared to an HID lamp or an incandescent lamp is used as a lamp holder. The configuration to be attached to is adopted. On the other hand, nowadays, development of lighting fixtures using LEDs (light emitting elements) as light sources, which consume less power than fluorescent lamps and have a longer useful life. In this case, as the brightness of LEDs is increasing, it is possible to irradiate light having a luminance equivalent to or exceeding that of a fluorescent lamp. However, it is known that a high-brightness LED has a very large amount of heat generated when it is turned on, and its useful life is significantly reduced when exposed to a high temperature for a long time. Therefore, in a lighting fixture that employs a high-intensity LED as a light source, cooling of the LED during lighting is an essential component.

  For example, in the LED lighting apparatus disclosed in Japanese Patent Laid-Open No. 2009-218209, a heat radiating member is attached to the back side of the board on which the LED is mounted to avoid an excessive temperature rise of the board (LED) during lighting. Configuration is adopted. In this case, the heat dissipating member of the LED lighting apparatus is provided with heat dissipating fins (heat dissipating pins) around a cylindrical block in which a hole (insertion hole) for inserting a power supply line or the like is formed. As a result, in this LED lighting apparatus, a situation in which the service life of the LED is significantly reduced as a result of the heat of the substrate raised by the heat generated by the LED during lighting being absorbed by the heat radiating member and radiated to the atmosphere is avoided. The

  However, when this LED lighting fixture is to be attached to the lamp holder in place of the fluorescent lamp-type lighting fixture main body in the conventional lighting fixture, the power line drawn out from the back of the ceiling so as to be inserted through the lamp holder is a substrate. In the state where the heat radiating member is removed from the board, the power line is inserted into the hole of the heat radiating member, and the power line in that state is connected to the board by soldering or screwing the terminal. It is necessary to carry out an operation of fixing the heat radiating member. In this case, when an LED is used as a light source in a luminaire that requires high brightness, such as a luminaire for mounting on a high ceiling, it is necessary to attach a very large heat radiating member to ensure a sufficient amount of heat radiation. There is. Therefore, when the LED lighting fixture is adopted as the lighting fixture main body in the conventional lighting fixture, the operation of inserting the power supply line while having a large and heavy heat radiating member is complicated, and the power supply line in that state is connected to the substrate. There arises a problem that the work is very complicated.

  The present invention has been made in view of such problems, and a lighting apparatus that can easily perform assembly work and mounting work while reducing power consumption and extending the life by adopting a light emitting element as a light source. The main purpose is to provide

In order to achieve the above object, a lighting fixture according to claim 1 is a fixture for fixing to a mounting object, a substrate having a light-emitting element disposed on one surface thereof, and an electrical connection to the light-emitting element. A power cable connected to the base plate, a plurality of heat dissipating fins are formed, one end is fixed to the fixture, and the substrate is fixed to the other end, and the heat of the substrate that has risen in temperature is transferred to the other end And a pair of first heat radiating members formed in the same shape and separable from each other , and both the first heat radiating members. And a second heat radiating member fixed to the other surface of the substrate separately from each other, and the power supply cable in a joined state on each joint surface of the pair of first heat radiating members. Configures an insertion hole for inserting That recesses are respectively formed, the second heat radiating member is formed in a shape equal to the first heat radiating member.

  According to the luminaire of claim 1, a fixture for fixing to a mounting object, a substrate having a light emitting element disposed on one surface, and a power cable electrically connected to the light emitting element And a plurality of radiating fins and one end portion is fixed to the fixture, and a heat radiating portion that absorbs heat at the other end portion to dissipate heat from the radiating fins and is separable A pair of first heat radiating members joined together to constitute a heat radiating portion, and at least one of the joint surfaces of the pair of first heat radiating members joined to each other is inserted into the power cable in the joined state By forming the recess that forms the hole, after connecting the power cable to the substrate (light emitting element), the first heat radiating member is joined to form the heat radiating portion, and the substrate is fixed to the lower end portion thereof. Can do. Therefore, even when the heat dissipation part is made large to ensure a sufficient amount of heat dissipation, the power cable can be connected to the board without having a large heat dissipation part, thus reducing power consumption and extending the service life. It is possible to easily assemble (easily attach) a lighting fixture including the light emitting element to be obtained as a light source.

In addition , by forming a recess on each joint surface of the pair of first heat radiating members and forming the first heat radiating members in the same shape, the pair of first heat radiating members have different shapes. Unlike the case where two types of heat dissipating members are joined to form the heat dissipating part, even when two or more sets of first heat dissipating members are prepared for assembling a plurality of lighting fixtures, the first part to be joined to each other. Without considering the combination of 1 heat radiating member, it is possible to form a heat radiating portion by simply holding and joining any two first heat radiating members, so that it is possible to assemble a lighting fixture more easily. In addition, since the heat radiating portion can be configured by manufacturing two types of first heat radiating members, the manufacturing cost of the heat radiating portion can be sufficiently reduced.

Further , the second heat radiating member fixed to the other surface of the substrate separately from both the first heat radiating members is provided to constitute the heat radiating portion, so that the size of the first heat radiating member is increased according to the size of the substrate. Compared to a configuration with a changed thickness (that is, a configuration in which the weight of the first heat radiation member increases according to the size of the substrate to be fixed), the weight per one first heat radiation member is sufficiently light. Therefore, it is possible to easily assemble the lighting fixture while securing a sufficient heat radiation amount by arbitrarily increasing the number of second heat radiation members fixed to the substrate.

Further , since the first heat radiating member and the second heat radiating member are formed in the same shape, the heat radiating portion is formed by two types of heat radiating members having different shapes as the first heat radiating member and the second heat radiating member. Unlike the construction, even when two or more sets of both heat radiating members are prepared to assemble a plurality of lighting fixtures, the combination of the heat radiating members used to assemble one lighting fixture is considered. Therefore, the heat radiating part can be formed by simply holding and fixing any number of heat radiating members in order, so that it is possible not only to assemble the lighting fixture more easily, but also to use one type of heat radiating member. Since the heat radiating portion can be configured by manufacturing the required number, the manufacturing cost of the heat radiating portion can be sufficiently reduced.

1 is a cross-sectional view of a lighting fixture 1. FIG. FIG. 4 is a plan view of the substrate 4 as viewed from the mounting surface side of the LED module 11. It is the sectional view on the AA line in FIG. It is sectional drawing for demonstrating the assembly method of the lighting fixture. It is sectional drawing of the thermal radiation part 6a in the lighting fixture main body 3a of the lighting fixture 1A which concerns on other embodiment. It is sectional drawing of the lighting fixture 1B which concerns on other embodiment.

  Embodiments of a lighting fixture according to the present invention will be described below with reference to the accompanying drawings.

  A lighting fixture 1 shown in FIG. 1 is an example of a hanging type lighting fixture that is attached to an attachment target body X such as a ceiling surface or a beam member, and a light emitting element (LED) is employed as a light source. The luminaire 1 includes a fixture 2 and a luminaire body 3, and the luminaire body 3 includes a substrate 4, a power cable 5, a heat radiating unit 6, a shade 7, and a diffusion plate 8. The fixture 2 is a member for fixing the lighting fixture 1 to the attachment object X, and is not particularly limited, but is configured in the same manner as a lamp holder used in a conventional lighting fixture. . Specifically, as an example, the fixture 2 includes, as an example, a base portion 2a fixed to the attachment target body X and an attachment portion 2c for attaching the luminaire main body 3 connected by a shaft portion 2b. A hollow structure through which the power cable 5 can be inserted is formed.

  As shown in FIG. 2, the substrate 4 is formed in a disk shape from a highly heat conductive metal material such as an aluminum alloy as an example. In addition, about the board | substrate 4, it is not limited to what was comprised with metal plates, such as an aluminum alloy as mentioned above, It can also comprise with various printed circuit boards (a glass epoxy board | substrate, an aluminum base board | substrate etc. as an example). A plurality of LED modules 11 are disposed on one surface of the substrate 4 (a surface that faces downward when the lighting fixture 1 is suspended from the attachment object X: a mounting surface), and the heat radiating unit 6 A screw hole 12 for fixing the substrate 4 and a screw hole 13 for attaching the diffusion plate 8 are formed. In this case, in this lighting fixture 1, a plurality of white high-intensity LEDs (light emitting elements) are connected in series and arranged on the substrate 4 in a modular state. Each LED module 11 is connected in series on the substrate 4. One end of the power cable 5 is connected to a controller (power supply device) (not shown) in the back of the ceiling and the other end is connected to each LED module 11 disposed on the substrate 4.

  As shown in FIG. 1, the heat dissipating part 6 has one end (upper end in the figure) fixed to the fixture 2 (mounting part 2c) and the other end (lower side (substrate 4 side in the figure)). ), The substrate 4 is fixed, and while the substrate 4 is held, the heat of the substrate 4 that has risen due to the heat generated when the LED module 11 is turned on is absorbed, and heat can be radiated from each radiation fin 22 described later. It is configured. As shown in FIG. 3, the heat dissipating part 6 includes a pair of heat dissipating members 21 and 21 formed so as to be separable from a highly heat conductive metal material such as an aluminum alloy. The heat dissipating member 21 corresponds to a “first heat dissipating member”, and as an example, a plurality of long plate-shaped heat dissipating fins 22 along the vertical direction of the lighting fixture 1 are formed side by side along the horizontal direction. The power cables 5 connected to the LED modules 11 are configured to be joined to each other in a state where the power cables 5 are inserted into insertion holes H described later. Moreover, in this heat radiating part 6, the recessed part 23 which comprises the penetration hole H which penetrates the power cable 5 is each formed in the joining surface where both the heat radiating members 21 are mutually joined (a pair of 1st heat radiating member) The example of the structure which formed the recessed part which comprises an insertion hole in both of these.

  In this case, in this lighting fixture 1, the pair of heat-dissipating members 21 and 21 are formed in the same shape. In other words, in this lighting fixture 1, the heat radiating section 6 is configured by joining two types of heat radiating members 21 having the same shape and size. Further, in this lighting fixture 1, as an example, the horizontal cross-sectional shape of the heat radiating portion 6 is substantially rectangular, and the length of one side of the horizontal cross-section is substantially the same as the diameter of the substrate 4. Both heat radiating members 21 and 21 are formed, and the heat radiating portion 6 is formed in a prismatic shape as a whole. In this case, the cross-sectional shape of the heat radiating portion 6 is not limited to a square, and may be a quadrilateral other than a square, a triangle, a polygon more than a pentagon, a circle, or an ellipse.

  Furthermore, in this lighting fixture 1, the structure by which the board | substrate 4 is fixed to the thermal radiation part 6 is employ | adopted so that the penetration hole H formed between both the heat radiating members 21 and 21 may be located in the center part of the board | substrate 4. ing. Moreover, in this lighting fixture 1, in order to improve the heat absorption efficiency from the board | substrate 4 by the thermal radiation part 6, as shown in FIG. 1, it is between a board | substrate 4 and the thermal radiation part 6 (heat radiating member 21,21). A conductive sheet 9 is sandwiched. Instead of the configuration in which the heat conductive sheet 9 is sandwiched, a configuration in which a heat transfer agent such as silicon grease is applied to the contact surface between the substrate 4 and the heat radiating portion 6 can be adopted. It is possible to eliminate the need for the heat conductive sheet 9 and the heat transfer agent by processing both of the contact surfaces sufficiently flat so that the two come into close contact with each other.

  As an example, the shade 7 is made of a light metal material such as an aluminum alloy and serves as a reflector to form an umbrella shape. In this case, although not particularly limited, the shade 7 is configured similarly to the lamp shade in the conventional HID lighting fixture. The shade 7 is not limited to a light metal material such as an aluminum alloy, but can be formed of a metal material such as an iron plate or stainless steel, or a resin material. . Moreover, in this lighting fixture 1, although the lighting fixture main body 3 is comprised including the shade 7, this shade 7 can also be made unnecessary in the lighting fixture which uses a light emitting element (LED) as a light source. The diffusing plate 8 is a plate for diffusing the light emitted from each LED module 11, and as an example, the diffusing plate 8 is configured by a lens-type diffusing plate formed in a disk shape from a light-transmitting resin material. ing. In this case, instead of the lens-type diffusion plate, for example, a diffusion plate formed in a flat plate shape with a milky white resin material may be employed. Further, when a diffusion lens is disposed on the LED module itself disposed on the substrate 4, the diffusion plate 8 can be omitted.

  Next, the assembly method of the lighting fixture 1 and the attachment method with respect to the attachment object X are demonstrated with reference to drawings. It is assumed that the mounting of each LED module 11 on the substrate 4 has already been completed prior to the start of assembly work.

  When the lighting fixture 1 is assembled, as shown in FIG. 4, first, one end of the power cable 5 inserted in the fixture 2 is connected to the substrate 4 (LED module 11). In this case, the configuration for connecting the power cable 5 to each LED module 11 is not limited to the configuration in which the power cable 5 is soldered to the connection terminal of the LED module 11, and is attached to the end of the power cable 5 in advance. A configuration (not shown) in which the connected connection terminal is screwed to the cable connection portion in the substrate 4, and a configuration in which the end portion of the power cable 5 and the connection connector previously attached to the substrate 4 are connected to each other (not shown). Etc.) can be adopted. In this case, the end portion of the power cable 5 can be connected to the substrate 4 without having the heat radiating portion 6 (heat radiating members 21, 21) regardless of which of the above configurations is employed.

  In the figure, a state in which the shade 7 has already been attached to the substrate 4 is shown. However, as will be described later, the shade 7 can be arbitrarily set as long as it is before the diffusion plate 8 is attached to the substrate 4. At this point, it can be attached to the substrate 4. Next, the heat radiating members 21, 21 facing the surface where the recess 23 is formed are brought close to each other as indicated by an arrow B, and the power cable 5 is inserted into the insertion hole H formed by the both recesses 23, 23. The two are joined so as to be inserted. At this time, as shown in FIG. 3, the heat radiation members 21 and 21 are joined so that the sandwiched power cable 5 can be inserted through the insertion hole H formed by the concave portions 23. Thereby, both the heat radiating members 21 and 21 are joined (integrated) to each other to form the heat radiating portion 6. Subsequently, as an example, the board 4 is brought close to the heat radiating portion 6 as indicated by an arrow C in FIG. 4, and fixing screws inserted through the screw holes 12 are connected to the heat radiating portion 6 (heat radiating members 21, 21). By fastening, the board | substrate 4 is fixed to the lower end part of the thermal radiation part 6. FIG. Thereby, the board | substrate 4 and the thermal radiation part 6 are integrated.

  Next, as an example, each of the screw holes (not shown) formed in the attachment portion 2c of the fixture 2 by bringing the heat radiating portion 6 integrated with the substrate 4 toward the fixture 2 as shown by the arrow D. The fixing screw through which is inserted is tightened to the heat radiating section 6. Thereby, the heat radiation part 6 is fixed to the lower end part of the fixture 2, and the fixture 2, the board | substrate 4, and the heat radiation part 6 are integrated. Subsequently, as indicated by an arrow E, the diffusion plate 8 is approached toward the substrate 4 and screwed into the screw hole 12 of the substrate 4. Thereby, the assembly work of the lighting fixture 1 is completed. Thereafter, the base part 2a of the fixture 2 is screwed to the attachment object X, and the other end of the power cable 5 is connected to a controller (power supply device) (not shown), whereby the luminaire 1 for the attachment object X is obtained. The installation work is completed.

  In addition, although the method to attach the lighting fixture 1 to the attachment object X after integrating the fixture 2 and the lighting fixture main body 3 was demonstrated, in this lighting fixture 1, for example like the conventional lighting fixture, existing installation is carried out. Even when the lamp holder in the HID lighting fixture is reused instead of the fixture 2, the lighting fixture 1 can be assembled according to the same procedure as the above assembling method. Specifically, first, the power cable 5 inserted through the existing lamp holder is connected to the substrate 4 (LED module 11). In this case, the end of the power cable 5 can be connected to the substrate 4 (LED module 11) without having the heat radiating portion 6 (heat radiating members 21, 21) in the same manner as in the above assembly method. Next, the heat radiating members 21, 21 facing the surface where the recess 23 is formed are brought close to each other so that the power cable 5 is inserted into the insertion hole H formed by the both recesses 23, 23. The heat radiation part 6 is formed by joining both. Then, while fixing the board | substrate 4 to the thermal radiation part 6, and fixing the thermal radiation part 6 integrated with the board | substrate 4 to the lamp holder as the fixing tool 2, the diffusion plate 8 is screwed to the board | substrate 4. FIG. Thereby, the assembly work (attachment work) of the lighting fixture 1 is completed.

  Thus, according to this lighting fixture 1, the fixture 2 for fixing to the attachment target body X, the board | substrate 4 with which the LED module 11 was arrange | positioned on one surface, and the LED module 11 are electrically connected. The power cable 5 and the plurality of radiating fins 22 are formed, one end is fixed to the fixture 2, and the substrate 4 is fixed to the other end. And a heat dissipating part 6 that dissipates heat from each heat dissipating fin 22, and a pair of separable heat dissipating members 21, 21 (first heat dissipating member) are joined together to constitute the heat dissipating part 6, and By forming a recess 23 constituting an insertion hole H through which the power cable 5 is inserted in at least one of the joining surfaces of the heat radiation members 21 and 21 to be joined to each other (both in this example). , Substrate 4 (L After connecting the power cable 5 to the D module 11), to form a heat radiating portion 6 by joining two heat-radiating member 21 can be fixed to the substrate 4 at its lower end. Therefore, even when the heat radiating portion 6 is configured to be large in order to ensure a sufficient heat radiating amount, the power cable 5 can be connected to the substrate 4 without having the large heat radiating portion 6. It is possible to easily assemble (easily attach) the luminaire 1 including the LED module 11 that can achieve a long life as a light source.

  Moreover, according to this lighting fixture 1, the recessed part 23 is each formed in each joining surface of a pair of heat radiating member 21 and 21 (1st heat radiating member), and both the heat radiating members 21 and 21 are mutually equal in shape. Unlike forming a heat radiating part by joining two types of heat radiating members having different shapes as a pair of first heat radiating members, two or more sets for assembling a plurality of lighting fixtures 1 are formed. Even when the heat radiating members 21 and 21 are prepared, it is only necessary to hold any two heat radiating members 21 in the hand and join them without considering the combination of the heat radiating members 21 and 21 to be joined to each other. Since the heat dissipating part 6 can be formed, not only can the lighting fixture 1 be assembled more easily, but also the heat dissipating part 6 can be configured by manufacturing two types of heat dissipating members 21. It is possible to sufficiently reduce the manufacturing cost of the heat unit 6.

In addition , although it demonstrated taking the case of the lighting fixture 1 which comprised only the pair of heat radiating members 21 and 21 and comprised the heat radiating part 6, the heat radiating part was comprised including three or more arbitrary numbers of heat radiating members. can do. Specifically, for example, a substrate 4a having a diameter larger than that of the substrate 4 in order to dispose a larger number of LED modules 11 than the above-described lighting device 1, such as a lighting device body 3a in the lighting device 1A shown in FIG. In this case, separately from the pair of heat radiation members 21 and 21, any number (four in this example) of heat radiation members 21 may be fixed to the substrate 4a to constitute the heat radiation portion 6a. it can. In addition, about the component similar to said lighting fixture 1 in this lighting fixture 1A and the lighting fixture 1B (refer FIG. 6) demonstrated later, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

In this case, in the lighting fixture 1A, the pair of heat radiation members 21 and 21 fixed to the center portion of the substrate 4a in a state where the insertion holes H are joined are formed as “a pair of first heat radiation members”. corresponds to ", four heat-radiating member 21 fixed to its periphery you corresponds to the" second heat radiation member ".

  Thus, according to this lighting fixture 1A, the heat radiating member 21 as the second heat radiating member fixed to the other surface of the substrate 4a separately from the heat radiating members 21 and 21 as the first heat radiating members. By providing the heat radiating portion 6a, the size of the pair of heat radiating members 21, 21 (first heat radiating member) is changed according to the size of the substrate 4a (that is, the first heat radiating member Compared with a configuration in which the weight increases in accordance with the size of the substrate to be fixed (not shown), the weight per one of the heat radiation member 21 can be sufficiently reduced, so that it is fixed to the substrate 4a. The lighting fixture 1A can be easily assembled while ensuring a sufficient amount of heat radiation by arbitrarily increasing the number of the heat radiation members 21 to be performed.

  Moreover, according to this lighting fixture 1A, since each heat radiating member 21 (the 1st heat radiating member and the 2nd heat radiating member) was formed in the mutually equal shape, as a 1st heat radiating member and a 2nd heat radiating member, Unlike the case where the heat radiating portion is constituted by two types of heat radiating members having different shapes, even when two or more sets of heat radiating members 21 are prepared to assemble a plurality of lighting fixtures 1A, Without considering the combination of the heat dissipating members 21 used for assembling the lighting fixture 1A, the heat dissipating part 6a can be obtained simply by holding and fixing any number (six in this example) of heat dissipating members 21 in order. Therefore, the lighting fixture 1A can be assembled more easily, and the heat radiating portion 6a can be obtained by manufacturing the necessary number (six in this example) of one type of heat radiating member 21. It is possible to structure, it is possible to sufficiently reduce the manufacturing cost of the heat radiating portion 6a.

  Furthermore, the lighting fixture 1 having a configuration in which the shade 7 is positioned below the heat radiating portion 6 (in this example, the configuration in which the shade 7 is fixed to the substrate 4 fixed to the lower end portion of the heat radiating portion 6) is taken as an example. As described above, a configuration in which the shade 7 and the heat radiating portion 6 are fixed to the lower end portion of the mounting portion 2c of the fixture 2 as in the lighting fixture main body 3b in the lighting fixture 1B shown in FIG. (Positioned configuration) can also be adopted. Also in the lighting fixture 1B having such a configuration, the same effects as those of the lighting fixture 1 can be obtained.

  Moreover, the structure which joins several separable heat-dissipating members, and forms one or both of a "a pair of 1st heat-radiating member" is employable. Even when such a configuration is adopted, the overall shape is the same as that of the heat radiating portion 6, so that the lighting fixtures 1, 1 </ b> A, 1 </ b> B having the heat radiating portions 6, 6 a are the same. The effect of can be produced. In this case, when the heat radiating portion is constituted by three or more n heat radiating members, as an example, the heat is radiated so as to have the same shape with a center angle of (360 ° / n) in plan view. By forming the member, the manufacturing cost of the heat radiating part can be sufficiently reduced. In addition, the luminaires 1, 1 </ b> A, 1 </ b> B in which the heat radiating portions 6, 6 a are configured by the heat radiating member 21 formed by arranging a plurality of flat plate-like heat radiating fins 22 along the vertical direction along the horizontal direction have been described. However, the heat radiating part can also be configured by using a heat radiating member (not shown) formed by arranging a plurality of heat radiating fins along the vertical direction as the first heat radiating member or the second heat radiating member.

DESCRIPTION OF SYMBOLS 1,1A, 1B Lighting fixture 2 Fixing tool 3,3a, 3b Lighting fixture main body 4,4a Board | substrate 5 Power cable 6,6a Heat radiation part 11 LED module 21 Heat radiation member 22 Heat radiation fin 23 Recessed part H Insertion hole X Attachment object

Claims (1)

A fixture for fixing to a mounting object, a substrate having a light emitting element disposed on one surface, a power cable electrically connected to the light emitting element, and a plurality of heat radiation fins are formed. In addition, one end portion is fixed to the fixing tool, and the substrate is fixed to the other end portion, and a heat radiating portion that absorbs heat of the substrate that has risen in temperature at the other end portion and dissipates heat from each radiating fin. Prepared,
The heat dissipating part is formed in the same shape as each other and is separated from a pair of first heat dissipating members , and a second heat dissipating member fixed to the other surface of the substrate separately from the first heat dissipating members. Composed of members ,
Recesses constituting insertion holes through which the power supply cable is inserted in the joined state are respectively formed on the joining surfaces joined to each other of the pair of first heat radiation members ,
The said 2nd heat radiating member is a lighting fixture formed in the shape equal to the said 1st heat radiating member .

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