Heat shield member, lighting fixture, and illuminating device

Abstract

To provide a heat shield member, a lighting fixture, and an illuminating device in which an electric wire is thermally protected.SOLUTION: A heat shield member comprises: a base part provided in an internal space formed by an appliance and a lighting fixture, in the lighting fixture detachably attached to the appliance to be attached to an attachment object part, on which an electric wire drawn to the inside from the outside of the appliance is placed, and for restraining heat from the lighting fixture from being dissipated to the electric wire; and a held part connected to the base part, and held by the lighting fixture.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a heat shielding member that blocks heat, a lamp, and an illumination device. [Background technology]

[0002] Conventionally, a lighting device including a fixture and a lamp is known. Patent Document 1 discloses a lighting device including a fixture body attached to a ceiling material using a hanging bolt, and a lamp as a light source unit detachably attached to the fixture body. A hole is formed in the bottom surface of the fixture body, into which an external electric wire is inserted, and the external electric wire exposed to the indoor side through the ceiling material is drawn into the fixture body from the hole formed in the bottom surface and connected to a terminal block unit of the lamp. However, since the external electric wire exposed to the indoor side through the ceiling material generally has high rigidity, there is a risk that the external electric wire will come into contact with the lamp when the lamp is attached to the fixture body. For this reason, depending on the specifications of the lighting fixture or the usage state of the lighting fixture, the temperature of the part of the lamp where the external electric wire comes into contact may exceed the heat resistance specification of the external electric wire.

[0003] For the purpose of protecting the external electric wires, Patent Document 2 discloses a lighting device in which an elastic member such as a sponge is attached as a protective member to a portion of the lighting device that comes into contact with the external electric wires. In this way, it is effective to protect the power supply by attaching an elastic member to the portion of the lighting device that comes into contact with the external electric wires. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5971591 [Patent Document 2] Patent No. 5763240 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the lighting device disclosed in Patent Document 2, the work of attaching the protective member is time-consuming, and there is a risk of increasing the cost of assembling products such as lighting fixtures. In addition, the adhesive member used to attach the protective member loses adhesive strength due to aging, and the protective member may peel off. Due to these factors, the electric wire may come into contact with a part of the lighting fixture that exceeds its heat-resistant temperature, and may no longer be thermally protected.

[0006] The present disclosure has been made to solve the above-mentioned problems, and provides a heat shield, a lamp, and a lighting device that thermally protect electric wires. [Means for solving the problem]

[0007] The heat-shielding member of the present disclosure is a lighting fixture that is removably attached to a fixture that is attached to a mounting portion, and includes a base that is provided in an internal space formed by the fixture and the lighting fixture, and on which an electric wire that is pulled from the outside to the inside of the fixture is placed to prevent heat from the lighting fixture from dissipating to the electric wire, and a holding portion that is connected to the base and held by the lighting fixture. Effect of the Invention

[0008] According to the present disclosure, the electric wire is placed on a base provided in the lamp. Therefore, the base suppresses heat dissipation from the lamp to the electric wire, thereby thermally protecting the electric wire. [Brief description of the drawings]

[0009] [Figure 1] 1 is an assembled perspective view showing an illumination device according to a first embodiment. [Diagram 2] 1 is an exploded perspective view showing a lighting device according to a first embodiment. [Diagram 3] 1 is a perspective view showing a lighting fixture according to a first embodiment. [Figure 4] 1 is a perspective view of a heat shield according to a first embodiment, viewed from above. [Diagram 5] 2 is a perspective view of the heat shield according to the first embodiment as viewed from below. FIG. [Figure 6] FIG. 2 is a top view showing the heat shield according to the first embodiment. [Figure 7] 1 is a side view showing a heat shield according to a first embodiment. [Figure 8] 1 is a cross-sectional view showing a heat shield according to a first embodiment. [Figure 9] 5A to 5C are diagrams illustrating a procedure for attaching the heat shield according to the first embodiment to a base. [Figure 10] 5A to 5C are diagrams illustrating a procedure for attaching the heat shield according to the first embodiment to a base. [Figure 11] 5A to 5C are diagrams illustrating a procedure for attaching the heat shield according to the first embodiment to a base. [Figure 12] 4 is an enlarged view showing a state in which the heat shield according to the first embodiment is attached to a base. FIG. [Figure 13] 1 is a cross-sectional view showing an illumination device according to a first embodiment. [Figure 14] FIG. 1 is a schematic diagram showing an illumination device according to a first embodiment. [Figure 15] FIG. 11 is a top view showing a lighting fixture according to the second embodiment. [Figure 16] FIG. 11 is a perspective view showing a lighting device according to a second embodiment. [Figure 17] FIG. 11 is a perspective view showing a heat shield according to a second embodiment. [Figure 18] FIG. 11 is a perspective view showing a heat shield according to a third embodiment. [Figure 19] FIG. 11 is a perspective view showing a heat shield according to a fourth embodiment. [Figure 20] FIG. 11 is a perspective view showing a heat shield according to a fifth embodiment. [Figure 21] FIG. 13 is a perspective view showing a heat shield according to a sixth embodiment. [Figure 22] FIG. 13 is a perspective view showing a lighting fixture according to a seventh embodiment. [Diagram 23] FIG. 13 is a cross-sectional view showing a lighting fixture according to an eighth embodiment. [Figure 24] FIG. 13 is a cross-sectional view showing a lighting fixture according to a ninth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the heat shielding member, the lamp, and the lighting device according to the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited to the embodiments described below. In addition, the size relationship of each component in the following drawings, including FIG. 1, may differ from the actual one. In addition, in the following description, terms indicating directions are used as appropriate to facilitate understanding, but these terms are for the purpose of explanation and do not limit the present disclosure. Examples of terms indicating directions include "up", "down", "right", "left", "front", and "rear".

[0011] Embodiment 1 FIG. 1 is an assembled perspective view showing a lighting device 1 according to the first embodiment, and FIG. 2 is an exploded perspective view showing the lighting device 1 according to the first embodiment. The lighting device 1 may be used as facility lighting, as general household lighting, or may be available at a mass retailer. The use (installation environment) of the lighting device 1 may be indoor use, outdoor use, or special use. Special use may be, for example, a salt-resistant type, a high-temperature type, or a low-temperature type. As shown in FIG. 1 and FIG. 2, the lighting device 1 includes a fixture 2 and a luminaire 3. The lighting device 1 may be an integrated device in which the fixture 2 and the luminaire 3 are integrated, or the fixture 2 and the luminaire 3 are sold separately. The combination of the fixture 2 and the luminaire 3 may be changeable according to the user's request. Here, the luminaire 3 is also called a light source unit or a light unit.

[0012] In a lighting device 1 with an integrated light source, in which a fixture 2 and a lamp 3 are integrated, the fixture 2 is generally attached to a mounting portion 4 such as a ceiling. The lamp 3 is detachably attached to the fixture 2 by a mounting device consisting of a fixture-side mounting portion 22 and a lamp-side mounting portion 34. The lamp 3 is connected to an electric power system via an external electric wire 24 drawn from the attic space behind the ceiling surface, which is outside the lighting device 1, and a relay portion 23 arranged inside the fixture 2, and is turned on when power is supplied.

[0013] The lighting device 1 is a long, ceiling-mounted type. As described above, the lighting device 1 includes the fixture 2 that is attached to a mounting portion 4 such as a ceiling using a hanging bolt 5, and the light fixture 3 that is detachably attached to the fixture 2. Here, the hanging bolt 5 is attached to a structural member of a building that is located, for example, above the ceiling.

[0014] (Apparatus 2) The fixture 2 has a fixture body 20, a fixture end 21, a fixture side mounting portion 22, a relay portion 23, and an external electric wire 24. The fixture body 20 is a long box-shaped member, and a housing portion 20a is formed inside in which a part of the lighting fixture 3 is housed. The fixture end 21 is a pair of plate-shaped members that close both ends in the longitudinal direction of the fixture body 20. The fixture side mounting portion 22 is attached to the fixture body 20, and is a spring that detachably mounts the lighting fixture 3 to the fixture 2. The relay portion 23 is attached to the fixture body 20, and is a terminal block that relays the external electric wire 24 that is drawn in from the outside of the lighting device 1. The external electric wire 24 is connected to the relay portion 23, and is called an F cable. The F cable is an abbreviation of VVF (vinyl insulated vinyl sheath cable flat type).

[0015] (Lighting 3) Fig. 3 is a perspective view showing the lighting fixture 3 according to the first embodiment. The lighting fixture 3 has an elongated shape extending along the longitudinal direction, and is housed in the housing portion 20a of the fixture body portion 20 of the fixture 2. The lighting fixture 3 is a light source unit that irradiates light to an illumination target area by power supplied from an external power source (not shown). As shown in Fig. 3, the lighting fixture 3 has a base 30, a light source portion 31, an outer casing 32, a power source portion 33, a lighting fixture side mounting portion 34, an electric wire 35, and a heat insulating member 40.

[0016] The base 30 is a long, rectangular metal member extending along the longitudinal direction. The base 30 is also called a support member or a frame. The base 30 is preferably made of a material that efficiently dissipates heat generated from the light source unit 31, for example, a general-purpose steel plate. When the base 30 is a steel plate, it is formed by bending or die-cutting and then roll forming. The base 30 may be painted to improve the reflectance from the light source unit 31 or to prevent rust. The base 30 may also be made of aluminum or magnesium, and in this case, it is formed by extrusion. Both ends of the base 30 in the width direction are provided with engaged parts 30a that engage with the heat shielding member 40 (see FIG. 9). The engaged parts 30a are formed, for example, by curling in which the tip is folded back.

[0017] The light source unit 31 is, for example, a light source that emits light, and is mounted on a substrate 31b with general-purpose light-emitting elements 31a (LEDs) arranged in the longitudinal direction, and is attached to one surface of the base 30. The light source is not limited to an LED, and may be a semiconductor laser, an organic EL, or an inorganic EL. There are several types of light sources, such as a bullet type, a surface mount type (SMD type), or a COB type, and any of them may be used. A conductive circuit pattern is formed on the substrate 31b, which serves as a path for supplying lighting power to the light-emitting element 31a. When the light-emitting element 31a is a surface mount type, the light source circuit is formed by fixing it on the substrate 31b by a reflow soldering process. The outer shell 32 is attached to the base 30 and covers the light source unit 31. The outer shell 32 is, for example, a translucent resin member that diffuses the light irradiated from the light source unit 31.

[0018] The power supply unit 33 is attached to the other side of the base 30, and is a control unit that converts power supplied from an external power supply into lighting power and lights the light source unit 31. The lamp side mounting unit 34 is attached to the other side of the base 30, and is a spring receiving metal fitting to which the fixture side mounting unit 22 of the fixture 2 is hooked. The electric wire 35 is, for example, a dimming wire. As described above, the fixture 2 is disposed on the mounting portion 4 such as a ceiling, and the external electric wire 24, which is a path for supplying external power from the ceiling space to the power supply unit 33, is disposed inside the fixture 2 through the hole 20b for inserting the electric wire formed in the fixture 2. The external electric wire 24 disposed inside the fixture 2 is connected to the power supply unit 33 of the lamp 3 through the relay unit 23. The F cable is generally used as electrical wiring in the ceiling space or the space behind the wall. The outer sheath of the F cable is protected by a polyethylene material, but the heat resistance temperature is often 60°C or less. Although there are some F cables that can withstand heat of over 60°C, they are expensive and not very versatile.

[0019] The lamp 3 is attached to the fixture 2 by hooking the fixture-side mounting part 22 onto the lamp-side mounting part 34. The lamp 3 is removed from the fixture 2 by releasing the engagement between the lamp-side mounting part 34 and the fixture-side mounting part 22.

[0020] (Heat shielding member 40) FIG. 4 is a perspective view of the heat-shielding member 40 according to the first embodiment as viewed from above, and FIG. 5 is a perspective view of the heat-shielding member 40 according to the first embodiment as viewed from below. FIG. 6 is a top view showing the heat-shielding member 40 according to the first embodiment, and FIG. 7 is a side view showing the heat-shielding member 40 according to the first embodiment. FIG. 8 is a cross-sectional view showing the heat-shielding member 40 according to the first embodiment. The heat-shielding member 40 is formed to correspond to the shape of the base 30 of the lamp 3. As shown in FIGS. 4 to 8, the external appearance of the heat-shielding member 40 is, for example, a quadrangle, but may be another shape such as a circle or a triangle as long as the effect of insulating the electric wire 35 from heat is obtained.

[0021] The material of the heat shielding member 40 is the same steel plate as the base 30 of the lamp 3. The material of the heat shielding member 40 may be a molded product using a heat-resistant resin material or ceramic material as long as it has the effect of insulating the electric wire 35 from heat. That is, the heat shielding member 40 is made of a metal material, a resin material, or a ceramic material. Molded products include those made by extrusion molding or 3D printing. Molded products are also made by a variety of processing methods, such as punching into a predetermined shape with a punching die and bending into a desired shape. The heat shielding member 40 includes a base 41, a holding portion 42, and an engagement portion 43.

[0022] (base 41) The base 41 is provided in the internal space formed by the fixture 2 and the lighting fixture 3, and the electric wire 35 drawn from the outside of the fixture 2 to the inside is placed on the base 41 to prevent heat from the lighting fixture 3 from dissipating to the electric wire 35. The base 41 is rectangular in shape and has an area large enough that the electric wire 35 does not come into contact with the base 30. Ventilation holes 41a through which air passes are formed in the four corners of the base 41, and the portions cut and raised to form the ventilation holes 41a form part of the engagement portion 43.

[0023] (Holding part 42) The holding portion 42 is connected to the base 41 and held by the lamp 3. The holding portion 42 is a pair of plate-shaped members extending downward from two opposing sides of the base 41, and the lower end of the holding portion 42 is placed on the base 30 of the lamp 3. That is, a heat-shielding space 50 is formed between the base 41 and the lamp 3 by the height dimension of the holding portion 42 (see FIG. 13). In this way, the electric wire 35 placed on the base 41 and the base 30 of the lamp 3 are separated by the height dimension of the holding portion 42. Note that, since the electric wire 35 is placed on the base 41, it is arranged to avoid the heat-shielding space 50 and does not enter the heat-shielding space 50. The holding portion 42 is also called a foot portion. Parts of the pair of holding portions 42 are cut and raised to form parts of the engagement portion 43. That is, the engagement portion 43 is formed by cutting and raising the base 41 and the holding portion 42.

[0024] (Engagement portion 43) The engaging portion 43 is an elastic member provided on the holding portion 42. Four engaging portions 43 are provided at positions corresponding to the four corners of the base 41. The engaging portions 43 engage with the engaged portions 30a of the base 30 of the lamp 3, thereby holding the holding portion 42 on the lamp 3. The engaging portions 43 engage with the engaged portions 30a of the base 30. The holding portion 42 is held on the lamp 3 in a state in which the engaging portions 43 and the engaged portions 30a press against each other due to elastic deformation of the engaging portions 43.

[0025] 9 to 11 are diagrams showing a procedure for attaching the heat shielding member 40 according to the first embodiment to the base 30. Next, a procedure for attaching the heat shielding member 40 to the base 30 will be described. As shown in FIG. 9, first, the heat shielding member 40 is arranged on the base 30 of the lamp 3 in a tilted state. At this time, one of the engaging portions 43 of the heat shielding member 40 is engaged with one of the engaged portions 30a of the base 30. Next, as shown in FIG. 10, the other of the engaging portions 43 of the heat shielding member 40 is elastically deformed to prepare for engagement with the other of the engaged portions 30a of the base 30. Thereafter, as shown in FIG. 11, the other of the engaging portions 43 of the heat shielding member 40 is engaged with the other of the engaged portions 30a of the base 30, whereby the heat shielding member 40 is attached to the base 30. At this time, the engaging portion 43 maintains its elastic deformation, and the engaging portion 43 and the engaged portion 30a press against each other, so that the holding portion 42 of the heat shield 40 is held by the lamp 3. When the heat shield 40 is attached to the base 30 in this manner, the engagement is firmly maintained by the elastic force of the engaging portion 43, so that the heat shield 40 does not easily come off even if an external factor occurs.

[0026] Fig. 12 is an enlarged view showing a state in which the heat shield 40 according to the first embodiment is attached to the base 30. As shown in Fig. 12, a distance R2 from the other surface of the base 30, which is the surface on the heat shield 40 side, to the tip of the engaging portion 43 is greater than a distance R1 from the other surface of the base 30 to the tip of the engaged portion 30a. Therefore, when the heat shield 40 is attached to the base 30, the engaging portion 43 is caught by the engaged portion 30a, and movement is restricted so that the heat shield 40 does not shift sideways. Therefore, the heat shield 40 can be placed at a predetermined position.

[0027] Fig. 13 is a cross-sectional view showing the lighting device 1 according to embodiment 1. As shown in Fig. 13, the heat-shielding member 40 is provided at a position facing between the hole 20b in the fixture 2 through which the external electric wire 24 is drawn and the relay part 23 to which the external electric wire 24 is connected.

[0028] Fig. 14 is a schematic diagram showing the lighting device 1 according to the first embodiment. As described above, when the heat shielding member 40 is attached to the base 30, a heat shielding space 50 is formed between the heat shielding member 40 and the base 30 as shown in Fig. 14. The heat shielding space 50 prevents heat generated from the light source unit 31 from being directly transmitted to the electric wire 35 via the base 30. For example, even if the other surface of the base 30 is at a temperature exceeding 60°C, the portion where the heat shielding member 40 and the electric wire 35 come into contact with each other will be at a temperature below 60°C.

[0029] According to the first embodiment, the electric wire 35 is placed on the base 41 provided in the lighting fixture 3. Therefore, the base 41 suppresses the heat from the lighting fixture 3 from dissipating to the electric wire 35. Therefore, the electric wire 35 can be thermally protected.

[0030] If the heat resistance temperature of the electric wire 35 is 60°C, conventionally, when the lamp 3 is turned on, the surface temperature of the base 30 exceeds 60°C, which may exceed the heat resistance temperature of the electric wire 35. The luminous flux type of the 40-type lamp 3 is divided into a high luminous flux type and a low luminous flux type. In the high luminous flux type, the amount of heat generated from the light source unit 31 is large, and the temperature transmitted to the base 30 tends to be high accordingly. For this reason, the surface temperature of the base 30 may reach 60°C or more, and the electric wire 35 drawn out from the hole 20b of the fixture 2 may come into contact with the base 30 when it is placed in the fixture 2. In this case, the heat resistance temperature of the electric wire 35 is exceeded, which may cause a shortened life span and deterioration of the outer cover.

[0031] In order to solve this problem, a technique has been known in the past in which a soft sponge-like member is attached to the base 30 using double-sided tape so that the electric wire 35 does not come into contact with the base 30. However, there are three concerns. The first is that it is necessary to attach a double-sided tape with a release paper to the sponge-like member in advance. The second is that it is necessary to remove the release paper of the double-sided tape in the assembly process of the lamp 3. The third is that it is necessary to attach the sponge-like member to the base 30. These factors increase the material cost and processing cost, that is, the assembly cost. In addition, the work of attaching the soft sponge-like member is difficult, and if rework is required, it will be even more troublesome. In addition, there is a risk that long-term reliability will decrease if the double-sided tape, such as a resin base material or adhesive, is exposed to high temperatures for a long period of time.

[0032] In contrast, in the present embodiment 1, since the heat shield 40 is provided, the temperature of the heat shield 40 is less than 60° C. This can be suppressed to the heat resistance temperature of the electric wire 35 or lower. Furthermore, if the material of the heat shield 40 and the material of the base 30 are both steel plate, the temperatures of the power supply unit 33 and the light source unit 31 around the heat shield 40 can be equalized. This leads to a longer lifespan of the entire lighting device 1.

[0033] As described above, the heat shield 40 is attached to the lamp 3 by being pushed in from the other side of the base 30. In this way, the heat shield 40 can be attached to the lamp 3 with one push, making it easy to attach. Furthermore, the attachment of the heat shield 40 to the base 30 also corresponds to the automated assembly process of the lamp 3. In order to accommodate the automated assembly process, for example, the base 41 and the holding portion 42 may be provided with parallel surfaces to make it easier to clamp them with a robot arm. Also, the base 41 and the holding portion 42 may be provided with flat surfaces to make it easier to clamp them with a robot arm. This makes it easier to remove them with the robot arm.

[0034] Embodiment 2 Fig. 15 is a top view showing a lamp 3 according to embodiment 2, and Fig. 16 is a perspective view showing the lamp 3 according to embodiment 2. Fig. 17 is a perspective view showing a heat-shielding member 40 according to embodiment 2. This embodiment 2 differs from embodiment 1 in that the heat-shielding member 40 is provided with a restricting piece 44. In this embodiment 2, the same reference numerals are used to denote parts in common with embodiment 1, and description thereof will be omitted, and differences from embodiment 1 will be mainly described.

[0035] As shown in Figs. 15 to 17, the heat shielding member 40 includes a restricting piece 44. The restricting piece 44 extends outward from the base 41, and has a restricting hole 44a formed therein. A restricting protrusion 30b provided on the base 30 is inserted into the restricting hole 44a. The restricting hole 44a and the restricting protrusion 30b function as guides when the heat shielding member 40 is attached to the base 30. When the restricting protrusion 30b is inserted into the restricting hole 44a, the movement of the heat shielding member 40 along the longitudinal direction of the lamp 3 is restricted, and the attached position is maintained even if the heat shielding member 40 is subjected to a stress from the external electric wire 24 to move in the longitudinal direction during installation and use. In the second embodiment, the screw used when the power supply unit 33 is fixed to the base 30 functions as the restricting protrusion 30b, but the restricting protrusion 30b may have another configuration.

[0036] Embodiment 3 18 is a perspective view showing a heat insulating member 40 according to embodiment 3. This embodiment 3 differs from embodiment 2 in that heat insulating holes 41b are formed in the heat insulating member 40. In this embodiment 3, the same parts as in embodiments 1 and 2 are denoted by the same reference numerals and their description is omitted, and the following description will focus on the differences from embodiments 1 and 2.

[0037] As shown in FIG. 18, a heat insulating hole 41b is formed at a position adjacent to the restricting piece 44 in the base 41. The heat insulating hole 41b has a function of increasing the thermal resistance between the restricting piece 44 and the center of the base 41, thereby reducing the operating heat generated from the power supply unit 33 and transmitted to the base 41 through the restricting piece 44. Therefore, the temperature rise of the base 41 can be suppressed. The heat insulating hole 41b also functions as a ventilation hole 20b for circulating air remaining in the heat shielding space 50 between the pedestal 30 and the base 41. This reduces the operating heat generated from the light source unit 31 and transmitted to the base 41 through the space, thereby suppressing the temperature rise of the base 41. The size and position of the heat insulating hole 41b are appropriately adjusted so that the temperature of the base 41 is lower than the heat resistance temperature of the electric wire 35 in contact with the base 41.

[0038] Embodiment 4 19 is a perspective view showing a heat shield 40 according to embodiment 4. This embodiment 4 differs from embodiment 2 in that the length of the engagement portion 43 is longer than the length of the holding portion 42 in the height direction. In this embodiment 4, the same parts as those in embodiments 1 to 3 are denoted by the same reference numerals and their description is omitted, and the following description will focus on the differences from embodiments 1 to 3.

[0039] 19, the length of the engaging portion 43 is longer than the height of the holding portion 42. This allows the length of the base portion 41 in the width direction to be relatively shorter, thereby reducing the amount of material used for the heat shielding member 40. Furthermore, the area of ​​the cut-and-raised portion that functions as the engaging portion 43 increases, and the area of ​​the ventilation hole 41a also increases. This also enhances the ventilation function.

[0040] Embodiment 5. 20 is a perspective view showing a heat shield 40 according to embodiment 5. This embodiment 5 differs from embodiment 2 in that the engagement portion 43 and the holding portion 42 are integrated. In this embodiment 5, the same parts as those in embodiments 1 to 4 are denoted by the same reference numerals and their description is omitted, and the following description will focus on the differences from embodiments 1 to 4.

[0041] 20, the engaging portion 43 and the holding portion 42 are integrally formed. The engaging portion 43 is not formed by cutting and raising, but extends toward the seat 30 side of the base 41 and then bends back to extend toward the appliance 2 side. This contributes to reducing the material of the heat-shielding member 40.

[0042] Embodiment 6 21 is a perspective view showing a heat shield 40 according to embodiment 6. This embodiment 6 differs from embodiment 2 in that an engagement portion 43 extends horizontally from a holding portion 42. In this embodiment 6, the same parts as those in embodiments 1 to 5 are denoted by the same reference numerals and their description is omitted, and the following description will focus on the differences from embodiments 1 to 5.

[0043] 21, the engagement portion 43 is not formed by cutting and raising, but extends outward from the longitudinal end of the holding portion 42. That is, the engagement portion 43 protrudes outward beyond the longitudinal end of the base portion 41. In this case, the same effect as in the first embodiment can be obtained.

[0044] Embodiment 7 Fig. 22 is a perspective view showing a lighting fixture 3 according to embodiment 7. This embodiment 7 differs from embodiment 1 in that the heat-shielding member 40 is made of a resin material or a ceramic material. In this embodiment 7, the same parts as those in embodiments 1 to 6 are given the same reference numerals and their explanations are omitted, and the following explanation will focus on the differences from embodiments 1 to 6.

[0045] 22, the heat shield 40 is not formed by bending a steel plate, but is formed by molding using a resin material or a ceramic material. Resin materials or ceramic materials have lower thermal conductivity than materials containing metal, so that the temperature rise of the base 41 is further suppressed. The positions, sizes and numbers of the heat insulation holes 41b and the ventilation holes 41a are appropriately changed depending on the strength or rigidity of the heat shield 40 and the temperature of the air remaining in the heat shield space 50 between the pedestal 30 and the base 41.

[0046] Embodiment 8 23 is a cross-sectional view showing a lighting fixture 3 according to embodiment 8. In embodiment 8, the shape of the engaged portion 30a of the base 30 is different from embodiment 1. In embodiment 8, parts common to embodiments 1 to 7 are given the same reference numerals and description thereof is omitted, and the following description focuses on the differences from embodiments 1 to 7.

[0047] 23, the engaged portions 30a of the base 30 are a pair of protruding portions that protrude in directions approaching each other. These are provided when the base 30 is formed by extrusion molding, and are formed over the longitudinal direction of the base 30. This makes it unnecessary to manufacture a separate portion on the base 30 that functions as the engaged portions 30a.

[0048] Embodiment 9 24 is a cross-sectional view showing a lighting fixture 3 according to embodiment 9. This embodiment 9 differs from embodiment 1 in that the holding portion 42 has elasticity. In this embodiment 9, the parts common to embodiments 1 to 8 are given the same reference numerals and description thereof is omitted, and the description will focus on the differences from embodiments 1 to 8.

[0049] 24, the holding portion 42 has elasticity, and the entire holding portion 42 is elastically deformed to press the base 30. In the ninth embodiment, the inclined holding portion 42 also functions as the engaging portion 43, and engages with, for example, the engaged portion 30a of the base 30. This simplifies the structure of the heat shield 40 and widens the range of options for the molding method.

[0050] Various aspects of the present disclosure are summarized below as appendices.

[0051] [Appendix 1] a base provided in an internal space defined by the fixture and the lighting fixture, the base receiving an external electric wire led from the outside of the fixture to the inside of the fixture, and suppressing dissipation of heat from the lighting fixture to the external electric wire; A holder connected to the base and held by the lamp; A heat insulating member comprising: [Appendix 2] The lamp-side mounting portion of the lamp is detachably mounted to the fixture-side mounting portion provided on the fixture. 2. The heat shielding member of claim 1. [Appendix 3] A heat-shielding space is formed between the base and the lamp. 3. The heat shielding member according to claim 1 or 2. [Appendix 4] The external electric wire is arranged so as to avoid the heat shielding space. 4. The heat shielding member according to claim 3. [Appendix 5] The holding portion further includes an elastic engaging portion provided thereon, The holding portion is held by the lamp by the engagement of the engaging portion with an engaged portion provided on the lamp. 5. A heat shield according to any one of claims 1 to 4. [Appendix 6] The holding portion is held by the lamp in a state in which the engaging portion and the engaged portion are pressed against each other. 6. The heat shielding member according to claim 5. [Appendix 7] The length of the engagement portion is greater than the length of the holding portion. 7. The heat shielding member according to claim 5 or 6. [Appendix 8] The engagement portion extends horizontally from the holding portion. 8. A heat shield according to any one of claims 5 to 7. [Appendix 9] The engaging portion and the holding portion are integrally formed. 7. The heat shielding member according to claim 5 or 6. [Appendix 10] The engaged portion is a pair of protruding portions that protrude in directions approaching each other. 10. A heat shield according to any one of claims 5 to 9. [Appendix 11] The holding portion has elasticity. 11. A heat shield according to any one of claims 1 to 10. [Appendix 12] The lamp further includes a restricting piece extending outward from the base and having a restricting hole formed therein into which a restricting protrusion provided on the lamp is inserted. 12. A heat shield according to any one of claims 1 to 11. [Appendix 13] The base is formed with a heat insulating hole for blocking heat. 13. A heat shield according to any one of claims 1 to 12. [Appendix 14] With a pedestal, A heat shield according to any one of claims 1 to 13 provided on the base; A lighting fixture equipped with: [Appendix 15] The heat shield is made of a metal material, a resin material, or a ceramic material. The lamp described in Appendix 14. [Appendix 16] The heat shielding member is The external electric wire is connected to a relay portion provided at a position facing the hole through which the external electric wire is drawn in the device. 14. A lamp as described in appendix 14 or 15. [Appendix 17] A light source unit provided on one surface of the base and configured to irradiate light; and an engaged portion provided on the other surface of the base, The heat shielding member is The holding portion further includes an elastic engaging portion provided thereon, The engaging portion engages with the engaged portion, whereby the holding portion is held by the lamp. 17. A lamp according to any one of appendixes 14 to 16. [Appendix 18] The distance from the other surface of the base to the tip of the engaging portion is greater than the distance from the other surface of the base to the tip of the engaged portion. The lamp described in Appendix 17. [Appendix 19] The device is attached to the attachment portion; and A lamp according to any one of appendices 14 to 18, A lighting device comprising: [Explanation of symbols]

[0052] 1 lighting device, 2 fixture, 3 luminaire, 4 mounting portion, 5 hanging bolt, 20 fixture main body, 20a storage portion, 20b hole, 21 fixture end, 22 fixture side mounting portion, 23 relay portion, 24 external electric wire, 30 base, 30a engaged portion, 30b regulating protrusion, 31 light source portion, 31a light-emitting element, 31b board, 32 outer casing, 33 power supply portion, 34 luminaire side mounting portion, 35 electric wire, 40 heat-shielding member, 41 base, 41a ventilation hole, 41b insulation hole, 42 holding portion, 43 engagement portion, 44 regulating piece, 44a regulating hole, 50 heat-shielding space.

Claims

1. a base that is provided in an internal space defined by the fixture and the lighting fixture and that receives an electric wire leading from the outside of the fixture to the inside of the fixture and that suppresses dissipation of heat from the lighting fixture to the electric wire; A holder connected to the base and held by the lamp; A heat insulating member comprising:

2. The lamp-side mounting portion of the lamp is detachably mounted to the fixture-side mounting portion provided on the fixture. The heat shield according to claim 1.

3. A heat-shielding space is formed between the base and the lamp. The heat shield according to claim 1 or 2.

4. The electric wire is arranged so as to avoid the heat shielding space. The heat shield according to claim 3.

5. The holding portion further includes an elastic engaging portion provided thereon, The holding portion is held by the lamp by the engagement of the engaging portion with an engaged portion provided on the lamp. The heat shield according to claim 1 or 2.

6. The holding portion is held by the lamp in a state in which the engaging portion and the engaged portion are pressed against each other. The heat shield according to claim 5.

7. The length of the engagement portion is greater than the length of the holding portion. The heat shield according to claim 5.

8. The engagement portion extends horizontally from the holding portion. The heat shield according to claim 5.

9. The engaging portion and the holding portion are integrally formed. The heat shield according to claim 5.

10. The engaged portion is a pair of protruding portions that protrude toward each other. The heat shield according to claim 5.

11. The holding portion has elasticity. The heat shield according to claim 1 or 2.

12. The lamp further includes a restricting piece extending outward from the base and having a restricting hole formed therein into which a restricting protrusion provided on the lamp is inserted. The heat shield according to claim 1 or 2.

13. The base is formed with a heat insulating hole for blocking heat. The heat shield according to claim 1 or 2.

14. With a pedestal, The heat shield according to claim 1 or 2, which is provided on the base; A lighting fixture equipped with:

15. The heat shield is made of a metal material, a resin material, or a ceramic material.

15. A lamp according to claim 14.

16. The heat shielding member is The wire is provided at a position facing the hole in the device through which the wire is drawn and the relay portion to which the wire is connected.

15. A lamp according to claim 14.

17. A light source unit provided on one surface of the base and configured to irradiate light; and an engaged portion provided on the other surface of the base, The heat shielding member is The holding portion further includes an elastic engaging portion provided thereon, The engaging portion engages with the engaged portion, whereby the holding portion is held by the lamp.

15. A lamp according to claim 14.

18. The distance from the other surface of the base to the tip of the engaging portion is greater than the distance from the other surface of the base to the tip of the engaged portion.

18. A lamp according to claim 17.

19. The device is attached to the attachment portion; and A lamp according to claim 14; A lighting device comprising:

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