JP2010073650A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire improving a translucent cover member supporting structure to reduce the size. <P>SOLUTION: The luminaire 10 includes a light source 11, a reflector 13 having an annular sidewall 13f and a reflection plane 13b disposed on the inner side of the sidewall to reflect light from the light source, the translucent cover member 14 covering the reflection plane of the reflector and having a locking part 14c hooked to the sidewall of the reflector and a luminaire body 15 housing the reflector with the cover member hooked to enclose the locking part to control movement of the locking part to the outside relative to the sidewall. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a luminaire in which a translucent cover member is provided on the front surface of a reflector such as a spotlight or a downlight.

In recent years, instead of filament light bulbs, lighting fixtures using light-emitting diodes that have a long life and low power consumption as light sources have been commercialized. For example, Patent Document 1 discloses a spotlight in which a white light emitting diode is installed on a substrate, a lens fixing plate and a front cover are disposed in front of the substrate, and these are positioned in a lamp shade.
JP 2006-294526 A

  In this type of lighting equipment, in particular, lighting fixtures using light emitting diodes as light sources, it is an important issue how to achieve a long life and energy saving and how to make the fixtures compact. In particular, the translucent cover member that is located in front of the light source and covers the reflector protects the light source from the outside, especially the exposed charging part such as a light-emitting diode from dust, etc., and prevents the user from directly touching the charging part. Is usually made of a transparent synthetic resin such as acrylic or a glass plate, a disk-shaped cover member is brought into contact with the front surface of the reflector, and the periphery thereof is a separate member, for example, A ring-shaped frame member is supported by sandwiching the opening edge of the reflector and the outer peripheral edge of the cover member through a packing such as rubber. For this reason, a ring-shaped frame member, which is a separate member, protrudes from the outer periphery of the cover member and has a substantially large outer diameter, making it impossible to reduce the size of the instrument.

  Moreover, what is shown in Patent Document 1 is a device in which a substrate on which a light emitting diode is installed, a lens fixing plate, and a front cover are sequentially positioned in a lamp shade, and light is controlled by the lens. There is no disclosure about the support structure of the front cover with respect to the reflector. For this reason, in this kind of lighting fixture having a light-transmitting cover member, for example, a spotlight, it is important how to support the cover member covering the reflecting surface of the reflector to reduce the size of the fixture. It is a difficult issue.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting fixture capable of reducing the size of the fixture by improving the support structure of the translucent cover member.

  In order to achieve the above object, the invention of the lighting apparatus according to claim 1 includes: a light source; and a reflector having an annular side wall portion and a reflecting surface that is provided inside the side wall portion and reflects light from the light source; A translucent cover member that covers the reflecting surface of the reflector and has a locking portion that locks to the side wall portion of the reflector; and stores the reflecting member that locks the cover member, including the locking portion. And an instrument main body that restricts movement of the locking portion in the outward direction with respect to the side wall portion.

  According to the present invention, a ring-shaped frame that is a separate member on the outer periphery of the cover member by the translucent cover member that covers the reflection surface of the reflector and has a locking portion that locks to the side wall of the reflector. A member etc. do not protrude and it becomes possible to aim at size reduction of an instrument. In addition, the reflector that locks the cover member encloses and holds the locking portion, and the instrument main body that restricts the movement of the locking portion in the outward direction with respect to the side wall portion includes the cover member and the reflector. Is prevented from being released, and the cover member can be reliably supported by the reflector.

  In the present invention, the luminaire is not limited to a residential luminaire such as a spotlight or a downlight, but may be various luminaires for facilities and businesses such as stores and offices. An LED bulb using a light-emitting diode that can be replaced with a bulb may be configured.

  The light source is preferably a semiconductor light emitting element using a semiconductor as a light source, such as a light emitting diode or a semiconductor laser, but may be an incandescent bulb, a halogen bulb, a discharge lamp, or the like. The light source is preferably composed of a plurality of light sources, but the necessary number is selected according to the use of illumination, and may be composed of, for example, one light source.

  The reflector reflects the light from the light source and emits it from the reflecting surface. In order to obtain the light distribution to be rotated, the reflector has a “mortar shape” with a circular cross section surrounding the light emitting area of the light source. You may form by a recessed part. Moreover, for example, the shape may be a “mortar-shaped” recess having a rectangular cross section, and is not limited to a specified shape. The material is made of white synthetic resin with light resistance, heat resistance and electrical insulation, for example, PBT (polybutylene terephthalate), synthetic resin such as acrylic and ABS, considering light reflection performance. May be. Moreover, even if the surface is painted white, a metal such as aluminum or silver may be deposited or plated to be processed into a mirror surface or a half mirror surface. Further, it may be made of a metal such as aluminum or copper, and white coating, vapor deposition, plating, or the like may be performed similarly to the above synthetic resin.

  The reflector may be provided corresponding to each light source according to the number of light sources. The plurality of reflectors provided individually may be configured so as to obtain the same light distribution characteristics or may be combined with those having different light distribution characteristics. Moreover, you may provide one common reflector with respect to several light sources. Furthermore, one reflector may be provided for one light source.

  The side wall part provided in the reflector may be formed integrally with the reflector, or may be formed separately. The side wall portion may be formed on the entire outer periphery of the reflector, or may be formed in pieces with a predetermined interval around the periphery.

  The cover member is transparent or translucent and has translucency, and the material is preferably made of synthetic resin such as acrylic in order to integrally form the engaging portion. May be made of a member separate from glass. The shape is not limited to a specific shape such as a circular plate or a rectangular flat plate, but all shapes that can cover the reflecting surface of the reflector are allowed. Further, the cover member may have a light control function such as a lens. Furthermore, for example, in the case of an outdoor lighting fixture or the like, it may be configured to cover the reflecting surface via an airtight member such as packing to improve waterproofness.

  For example, the locking part is formed integrally with a disc-shaped cover member made of a synthetic resin, and the hook part is locked to a recess formed on the side surface of the reflector by using the elastic force of the resin. However, the specific means is, for example, that the flange and the recess are engaged with the side wall of the reflector, for example, the flange is provided in the reflector and the recess is provided in the cover member. All possible means are allowed.

  The instrument body that encloses and accommodates the engaging portion and restricts the movement of the engaging portion in the outward direction with respect to the side wall portion includes the engaging portion so that the engaging portion is released by an external force or the like. It is a means for preventing, and it is preferable from the viewpoint of achieving miniaturization that all the reflectors that lock the cover member are contained and accommodated in the instrument body, but partly not included In other words, all means for enclosing so that the lock is not released by an external force or the like is allowed. In order to dissipate heat generated from a light source, for example, a light emitting diode, the instrument main body is preferably made of a metal having thermal conductivity such as aluminum. Here, the reflector is engaged with a cover member. As long as it has a function of accommodating the material, it is not limited to metal, and may be made of, for example, a synthetic resin.

  The invention of the lighting fixture according to claim 2 includes: a semiconductor light emitting element; and an annular side wall and a reflector having a reflective surface that reflects light of the semiconductor light emitting element and is provided inside the side wall. A translucent cover member that covers the reflecting surface of the reflector and has a locking portion that locks the side wall of the reflector and includes a non-conductive covering that covers the side wall; and Including the locking portion including the locking portion, restricting the movement of the locking portion in the outward direction with respect to the side wall portion, and including an instrument body made of a conductive member. Features.

  The conductive reflector has a conductive reflective film formed by vapor deposition or plating on a surface of a metal such as aluminum or silver in order to process it into a mirror surface or a semi-mirror surface in consideration of light reflection performance. A reflector made of synthetic resin is allowed, but it may be made of a conductive metal such as aluminum or copper, and may be subjected to white coating, vapor deposition, plating, or the like.

  The non-conductive covering portion provided on the translucent cover member is a means for providing electrical insulation between the conductive reflector and the instrument body made of the conductive member, and covers the entire side surface of the reflector. Even if it is formed so as to be covered, for example, it is not necessary to form it on a portion that can be covered with another member, such as a locking portion formed on the cover member, so that the side wall portion of the reflector is covered. All the means for covering so that the side wall part of a reflector and an instrument main body do not contact are permitted, without inhibiting miniaturization of an instrument.

  The instrument body made of a conductive member is preferably made of a metal having heat conductivity such as aluminum or copper in consideration of heat dissipation, but it is not a condition to have heat dissipation, for example, synthetic resin It may be one obtained by depositing a conductive metal.

  According to the first aspect of the present invention, it is possible to reduce the size of the instrument by the translucent cover member that covers the reflecting surface of the reflector and has a locking portion that locks the side wall of the reflector. It becomes. In addition, the reflector that locks the cover member encloses and holds the locking portion, and the instrument main body that restricts the movement of the locking portion in the outward direction with respect to the side wall portion includes the cover member and the reflector. Is prevented from being released, and the cover member can be reliably supported by the reflector.

  According to the second aspect of the present invention, it is possible to reduce the size of the instrument by the translucent cover member that covers the reflecting surface of the reflector and has a locking portion that locks the side wall of the reflector. It becomes. In addition, the reflector that locks the cover member encloses and holds the locking portion, and the instrument main body that restricts the movement of the locking portion in the outward direction with respect to the side wall portion includes the cover member and the reflector. Is prevented from being released, and the cover member can be reliably supported by the reflector. Furthermore, by the translucent cover member provided with the non-conductive covering portion that covers the side wall portion, electrical insulation between the conductive reflector and the instrument body made of the conductive member can be achieved.

  Hereinafter, an embodiment of a lighting apparatus according to the present invention will be described with reference to the drawings.

  The luminaire 10 of the present embodiment constitutes a spotlight used by being attached to a long wiring duct. As shown in FIG. 1, a light source 11, a substrate 12 provided with a light source, a light source The reflector 13 has a reflecting surface for reflecting the light, the cover member 14 that covers the reflecting surface of the reflector, and the instrument body 15 that houses the cover member and the reflector.

  The light source 11 is composed of a semiconductor light emitting element, in the present embodiment, a light emitting diode (hereinafter referred to as “LED”), and a plurality of LEDs 11 having the same performance, in this embodiment, six LEDs 11 are prepared. Each LED is composed of a blue LED chip and a high-intensity, high-power LED that emits white light by a yellow phosphor excited by the blue LED chip in this embodiment. Light is mainly emitted to x. Here, the optical axis xx is substantially perpendicular to the surface of the substrate 12 on which the LED 11 is mounted (FIG. 2B). The substrate 12 is composed of a circuit board, and the circuit board is composed of a disk-shaped circuit wiring board made of epoxy resin, and six LEDs 11 are mounted on the surface in a concentric manner at substantially equal intervals.

  The reflector 13 is integrally formed in a disc shape with a white synthetic resin having light resistance, heat resistance and electrical insulation, in this embodiment, PBT (polybutylene terephthalate). On the surface side of the disk, a plurality of recesses 13a having the same shape and dimensions, in which the white inner surface forms a paraboloidal shape with a white inner surface, are mounted on the substrate 12 in this embodiment. The six LEDs 11 are integrally formed so as to be concentrically arranged at substantially equal intervals so as to face each of the LEDs 11.

  The concave portion 13a constitutes six individual reflectors, and reflects light from the LED 11 as a light source and radiates it from the reflection surface. The light emitting area of the LED 11 is used to obtain a light distribution to be rotated. A “mortar-shaped” reflecting surface 13b having a circular cross section is formed so as to surround, and an opening of the concave portion 13a is used as a light emitting portion 13c, and a through hole 13d is formed at the bottom.

  On the back surface side of the disk constituting the reflector 13, an opening 13e having a space portion formed therein is formed, and the reflecting surface 13b is located on the inner side, and the annular side wall portion 13f is integrally formed on the side surface thereof. The engaging recesses 13g are integrally formed on the side wall portion at three locations in the radial direction from the center of the disk, that is, at an angle of 120 °. As shown in FIG. 3 in an enlarged manner, the engaging recess 13g forms a rectangular through hole 13h that penetrates from the end surface of the opening 13e to a substantially intermediate portion, and the upper portion of the through hole is not penetrated. It forms so that it may become the part 13i. The step portion has a thickness dimension approximately half of the wall thickness 13a of the side wall portion 13f or a dimension thinner than half, and is formed integrally with the side wall portion 13f on the inner surface side. As a result, a concave groove 13j having a dimension that is substantially half of the wall thickness 13a of the side wall 13f or deeper than half is formed on the outer surface side of the side wall 13f.

  In order to further improve the light reflection performance, the reflector 13 configured as described above is processed into a mirror surface by applying a reflection film, in this embodiment, a vapor deposition film made of aluminum, that is, a reflection film 13k having conductivity. The The reflective film 13k is formed by performing vapor deposition on the entire surface side of the reflector 13 and the concave portion 13a including the reflective surface 13b. At this time, in order to electrically insulate from the instrument body 15 made of conductive aluminum die casting described later, masking is performed so that conductive aluminum is not deposited on the portion approaching the instrument body, that is, the side wall portion 13f. To perform the evaporation process.

  The board | substrate 12 which mounted each LED11 is contact | abutted to the opening 13e at the reflector 13 comprised above. Thereby, each LED 11 is arranged so as to be exposed and exposed to the center of the through-hole 13d formed in the bottom surface of each concave portion 13a of the reflector 13, and is configured by each concave portion 13a. The optical axis yy of the LED 11 and the optical axis xx of the LED 11 are substantially matched (FIG. 2B). Thereby, the reflector 13 is configured to reflect the light of the LED 11 that is a light source by the reflecting surface 13b and to radiate it from the light emitting portion 13c.

  Further, the cover member 14 is engaged with and integrated with the reflector 13. That is, as shown in FIG. 1, the cover member 14 is formed in a shape that forms a disk with a transparent body, in this embodiment, a transparent acrylic resin. The diameter dimension of the disk is substantially the same as the diameter dimension Φ1 of the reflector 13 having a disk shape (FIG. 5), and is configured to cover each reflecting surface 13b of the six recesses 13a of the reflector in common. Is done. The cover member 14 is further formed with an engagement portion 14a that engages with an engagement recess 13g formed in the side wall portion 13f of the reflector 13. The engagement portions are arranged at three locations radially from the center of the disc to the outer peripheral edge of the disc of the cover member made of acrylic resin, that is, at substantially equal intervals at an angle of 120 °, like the engagement recess 13g of the reflector. The three legs 14b are raised and integrally formed (FIG. 1).

  Specifically, as shown in an enlarged view in FIG. 3 (a), the three legs 14b are integrally provided with a collar portion 14c as a locking portion in the present invention that protrudes toward the center of the disc at the tip portion. To form. Further, the thickness dimension b of the three legs 14b is approximately half of the thickness dimension a of the side wall portion 13f of the reflector 13 or thinner than half, and the cover member 14 is attached to the reflector 13. It is comprised so that it may not protrude outside the outer surface of the side wall part 13f of the reflector 13 in the state.

  As shown in an enlarged view of FIG. 3, the cover member 14 is moved from the surface side of the reflector 13 in a state where the hook portion 14 c which is a locking portion is locked to the engaging recess 13 g of the side wall portion 13 f. Push to cover (Fig. 3 (a)). As a result, the flange portion 14c of the leg 14b formed integrally with the cover member 14 rides on the concave groove 13j of the engagement concave portion 13g while being bent by the elastic force of the thin leg made of synthetic resin (FIG. 3B), and By moving downward, the flange portion 14c enters the through hole 13h beyond the step portion 13i, and the protruding flange portion 14c and the step portion 13i are locked (FIG. 3 (c)). In other words, the cover member 14 is held and integrated with the reflector 13 by locking the concave groove 13j and the collar portion 14c that is the locking portion.

  In this state, the thickness dimension b of the three legs 14b is approximately half of the thickness dimension a of the side wall part 13f of the reflector 13 or thinner than half, and is equal to the thickness dimension a of the side wall part 13f. Since the groove 13j having a dimension that is substantially half or deeper than half is formed, the leg 14b is locked in a state of being accommodated in the groove 13j without protruding from the surface of the side wall (FIG. 3D). )). Thereby, the collar part 14c which is a latching part does not protrude outside the diameter dimension Φ1 of the reflector 13, and the reflector 13 which latches and integrates the cover member 14 is reduced in size without increasing in size. Composed. The cover member 14 can be easily detached from the reflector 13 by removing the engaged state with the bending step portion 13i against the elasticity with a thin tool or the like, and the cover member can be removed from the reflector. It is integrated so that it can be attached and detached.

  The cover member 14 is locked to and integrated with the reflector 13 by the configuration and action of the locking portion 14c and the engaging recess 13g. The reflector 13 to which the cover member 14 is locked is configured in a small size as described above, and the reflection surface 13b of the reflector 13 is covered with the transparent cover member 14, and the reflector 13 is formed through the through-hole 13d. The exposed LED 11 and its charged part are covered and protected by the cover member 14.

  As shown in FIGS. 1 and 4, the instrument main body 15 is made of an aluminum die cast having good thermal conductivity and conductivity, and the reflector 13 having the cover member 14 configured as described above locked at one end thereof. The housing portion 15a is formed of a concave portion having a circular cross section for housing, and is configured in a substantially bowl shape having a heat radiation portion 15c integrally formed with a plurality of heat radiation fins 15b at the other end portion. As shown in FIG. 5, the diameter dimension Φ2 of the inner wall of the accommodating portion 15a made of a circular recess is the diameter dimension of the disc-shaped reflector 13 and the cover member made of a disk, that is, the cover member 14 is locked and integrated. The diameter of the reflector 13 is slightly larger than the diameter Φ1.

  Although shown in detail in FIG. 5, as described later, when the reflector 13 in which the cover member 14 is locked and integrated is contained and accommodated in the storage portion 15 a of the instrument body 15, In order to prevent the locking of a certain collar part 14c, in other words, from the state where the collar part 14c is engaged with the step part 13i, it is accommodated so that the collar part 14c is bent outward and does not come off from the step part 13i. The inner wall of the portion 15a is configured to have a dimension capable of restricting the outward deflection of the flange portion 14c (Φ2 <Φ4: Φ2 is a diameter dimension of the inner wall of the accommodating portion 15a, and Φ4 is a deflection when the flange portion 14c is detached from the step portion 13i. Size). Thereby, the diameter dimension Φ2 of the inner wall of the accommodating portion 15a can be set to a minimum diameter dimension that can include the reflector 13 in which the cover member 14 is locked and integrated, coupled with the downsizing of the reflector described above. The housing portion 15a, that is, the instrument body 15 can be reduced in size.

  The housing portion 15a formed of a recess has a bottom portion that is closed and the surface of the bottom portion is formed to be smooth, and the substrate placement portion 15d is integrally formed. The plurality of heat dissipating fins 15b are formed so as to protrude directly and integrally from the back surface side of the substrate mounting portion 15d of the housing portion 15a, have a flat plate shape in order to increase the surface area, and form a clearance S for air circulation between the fins. Are arranged as follows. Further, the outer periphery of the instrument body 15 is opposed to the direction along the plate surface of the radiation fins 15b, in other words, the direction substantially perpendicular to the direction a in which air flows through the gaps S between the radiation fins. The bearing portion 17 is integrally formed (FIG. 1), and both ends of an arm 18 made of U-shaped metal, stainless steel in this embodiment, are pivotally supported. In FIG. 1, reference numeral 19 denotes a support hole for supporting the reflector 13, in which the cover member 14 is locked and integrated with the housing portion 15 a, with a fixing means such as a screw, and the LED 11 disposed on the substrate 12. The cord connected to the wire is pulled out from a predetermined position of the heat radiating portion 15c.

  The cover member 14 is housed in the housing portion 15 a of the instrument main body 15 configured as described above in a state where the cover member 14 is locked and integrated with the reflector 13. That is, as shown in FIG. 5, the back side of the circuit board constituting the substrate 12 is formed of a silicone resin or the like that is formed smoothly on the instrument body 15 and has thermal conductivity and electrical insulation on the substrate installation portion 15d. The insulating sheet 20 or an adhesive or the like is brought into close contact with each other and supported by a fixing means such as a screw passing through the central axis (optical axis bb) of the accommodating portion 15a and accommodated in the accommodating portion 15a.

  As a result, the circuit board constituting the base 12 and the board installation portion 15d are thermally and closely connected, and the heat generated from the respective LEDs 11 disposed on the board 12 is transmitted from the board installation portion 15d via the radiation fins 15b. Heat is dissipated. In addition, the instrument body 15 accommodates the reflector 13 with the cover member 14 locked to the housing portion 15a, including the collar portion 14c that is the latching portion, and the collar portion 14c is locked as described above. It is supported not to come off. Further, the spotlight 10 is configured which is configured to be small and light, in which the optical axis aa of the light source body 16 substantially matches the central axis bb of the bowl-shaped instrument body 15 and has a substantially circular light emitting surface. The

  As shown in FIG. 6, the spotlight 10 configured as described above supports the arm 18 so that the arm 18 can be rotated in the horizontal direction on the power source unit 21 including the lighting circuit of the LED 11 as a light source. The cord drawn from the wire lead-out part is connected to the power supply part by wiring. Further, a connection part 22 having a terminal part is provided on the upper surface of the power supply part, and is installed so as to be electrically connected while being slidable in the longitudinal direction of the wiring duct 23, and is connected to the spotlight 10 via the wiring duct 23. Commercial power is supplied.

  When the spotlight 10 configured and installed as described above is turned on, each LED 11 emits light, and light emitted from the LED is transmitted through the cover member 14 from the light emitting portion 13c while being reflected by the reflecting surface 13b of the reflector 13. The illumination with the light distribution characteristic as the intended spotlight is performed.

  Further, the heat generated from each LED 11 during lighting is radiated from the base 12 through the substrate installation portion 15d of the instrument main body 15 and a plurality of radiation fins 15b having a large area exposed to the outside air. At this time, the instrument body 15 is made of aluminum die-casting with good thermal conductivity, and the plurality of heat dissipating fins 15b are formed directly on the back side of the board installation portion 15d, so that the heat conduction loss is reduced and the effect is reduced. Heat can be radiated to the outside. Further, since the bearing portion 17 of the arm 18 is formed integrally with the heat radiating portion 15c of the instrument body and the arm is made of stainless steel, heat is also radiated from the heat radiating portion 15c to the bearing portion 17 and from the heat conduction path via the arm 18. Is done.

  As described above, according to the present embodiment, the flange 13c that is the locking portion of the cover member 14 does not protrude outward from the diameter dimension Φ1 of the reflector 13, and the reflector 13 that locks the cover member 14 is enlarged. It can be made small without doing. The diameter dimension Φ2 of the inner wall of the housing portion 15a of the instrument main body 15 can be set to a minimum diameter dimension capable of including the reflector 13 integrated with the cover member 14, and coupled with the miniaturization of the reflector 13 described above. 15 can be miniaturized. By these actions, it is possible to provide a lighting device such as a spotlight that is small and light, advantageous in terms of cost, and hardly adversely affecting the design.

  Further, since the leg 14b of the cover member 14 and the flange portion 14c which is a locking portion are integrally formed, a separate member such as a ring-shaped frame member is not required as in the prior art, and the size can be reduced. In addition, it is possible to provide a lighting apparatus that is advantageous in terms of cost. Furthermore, the assembling work can be performed by a simple work of simply pushing the cover member 14 over the reflector 13, which is further advantageous in terms of cost.

  In addition, since the reflector 13 with the cover member 14 locked to the housing portion 15a is accommodated by containing the locking portion 14c, the instrument body 15 can be reduced in size while the locking portion 14c is unlocked. Thus, the reflector 13 that is supported so that the cover member 14 is locked can be reliably supported by the instrument body 15. In addition, the reflector 13 that locks the cover member 14 is configured in a small size as described above, and the reflection surface 13b of the reflector 13 is covered with the transparent cover member 14, and the reflector 13 is formed through the through-hole 13d. The exposed LED 11 and its charging part can be covered with the cover member 14 and protected from external dust and the like, and the user can be prevented from touching the charging part directly.

  In addition, the heat generated from each LED 11 during lighting is heated from the base 12 through the board installation portion 15d of the instrument main body 15 and a plurality of heat dissipating fins 15b having a large area exposed to the outside air. At the same time, heat is radiated from the heat radiating part 15c through the bearing part 17 and further through the heat conduction path via the arm 18, and by these heat radiating actions, a decrease in luminous efficiency of each LED 11 is suppressed, and a decrease in illuminance due to a decrease in luminous flux can be prevented. .

  As described above, in the present embodiment, the cover member 14 is formed with the hook part 14c as the locking part and the reflector 13 is formed with the engagement concave part 13g. An engaging recess may be formed. That is, a leg and a collar may be formed on the side wall of the reflector, and a step portion that engages the groove and the collar of the engaging recess may be formed on the cover member. Although the hook portion 14c and the engagement recess 13b, which are the locking portions, are provided at three locations, they may be provided at two locations facing each other, and in short, it may be provided at two or more locations.

  The substrate is made of a synthetic resin such as an epoxy resin, but may be made of a metal such as aluminum or copper from the viewpoint of thermal conductivity. The shape may be a disk shape for constituting the point module, or a long line shape constituting the line module, and all the shapes for obtaining the desired light distribution characteristics may be used. Shape is acceptable.

  In the present embodiment, the spotlight 10 attached to the wiring duct 23 is configured. However, a spotlight that is directly attached to a ceiling or a wall surface may be configured. Moreover, although the power supply unit 21 is configured separately from the fixture main body 15, a lighting fixture such as a power source integrated type spotlight may be configured by incorporating an LED lighting circuit or the like in the fixture main body 15. Good.

  Furthermore, as a lighting fixture comprised by a present Example, as shown in FIG. 7, you may comprise the LED light bulb 30 using the light emitting diode which can be substituted to the incandescent light bulb for general illumination. That is, the LED light bulb 30 includes a light source body 16 configured in a small size according to the present embodiment, that is, a light source section 31 incorporating the reflector 13 engaged with the cover member 14, and a case member 33 housing the lighting device 32. The base 34 is configured. The base 34 is formed of, for example, an E26 type base that can be attached to a socket for an incandescent light bulb for general illumination. According to this LED bulb, a small and lightweight LED bulb can be realized.

  In the present embodiment, by forming a translucent cover member provided with a non-conductive covering portion that covers the side wall portion of the reflector, the electrical connection between the conductive reflector and the instrument body made of the conductive member is achieved. It is configured to achieve insulation. Hereinafter, a description will be given with reference to FIGS. In FIG. 8 and FIG. 9, the same parts as those in FIG. 1 to FIG.

  As shown in Example 1, the reflector 13 is processed into a mirror surface by applying a vapor deposition film made of aluminum, that is, a reflective film 13k having conductivity, in order to further improve the light reflection performance. On the other hand, in order to dissipate heat generated from the LED 11 that is a light source, the instrument main body 15 is made of a metal having good thermal conductivity such as aluminum or copper, that is, a metal having conductivity.

  For this reason, when accommodating the reflector 13 with which the cover member 14 was integrated in the accommodating part 15a of the instrument main body 15, it is necessary to take an electrical insulation distance between an instrument main body and a reflector. For this reason, the whole instrument becomes large, which is an obstacle to downsizing. In order to solve this problem, in this embodiment, a cover portion that covers the side wall portion 13f of the reflector 13 is integrally formed on the cover member 14 made of acrylic resin, thereby forming a non-conductive cover portion 14d.

  The covering portion 14d is formed as follows. As shown in FIG. 9, the diameter dimension Φ3 of the cover member 14 made of a disk is slightly larger than the diameter dimension Φ1 of the reflector 13 made of a disk, and the covering portion 14d is raised from the outer peripheral edge of the disk. Are formed integrally. The covering portion 14d is formed in a thin outer wall shape made of resin at substantially equal intervals at a position avoiding the three legs 14b. The height of the covering portion 14d having an outer wall shape is formed to be substantially the same as the height of the side wall portion 13f or slightly higher than the side wall portion so that the side wall portion 13f of the reflector 13 can be covered.

  The cover member 14 configured as described above is pushed in so as to cover from the surface side of the reflector 13 as in the first embodiment. As a result, the cover member 14 is engaged with and integrated with the reflector 13, and the side wall portion 13f of the reflector 13 is covered with the covering portion 14d of the cover member 14, and further, the three legs 14b and the latches are engaged. A gap between the covering portions 14d is also covered by the flange portion 14c, which is a portion, and a substantially entire region of the side wall portion 13f of the reflector 13 is covered with a non-conductive member. As a result, a reflector 13 ′ is formed in which the conductive reflector 13 on which aluminum is deposited is covered with the covering portion 14d made of an electrically insulating acrylic resin.

  When this reflector 13 ′ is accommodated in the accommodating portion 15a of the instrument body 15 as in the first embodiment, as shown in FIG. 9, the side wall portion 13f of the reflector 13 ′ and the inner wall of the accommodating portion 15a of the instrument body 15 are provided. 14d is interposed therebetween. Thereby, electrical insulation with the instrument main body 15 which consists of electroconductive reflector 13 'and an electrically-conductive member is ensured, and safety | security can be improved. This eliminates the need for an electrical insulation distance between the fixture body 15 and the reflector 13 ', prevents the overall fixture from becoming large, and allows a compact and lightweight lighting fixture to be configured. . At the same time, the cover member 14 made of acrylic resin is formed by integrally forming the outer wall-shaped covering portion 14d from the outer peripheral edge of the disc, so that the disc is reinforced and the strength can be improved.

  Further, when the covering portion 14d of the present embodiment is not provided, as shown in the first embodiment, masking is performed so that conductive aluminum is not deposited on the portion approaching the instrument body 15, that is, the side wall portion 13f. It was necessary to perform the vapor deposition work. However, by providing the covering portion 14d, the side wall portion 13f of the reflector 13 can be deposited without masking. For this reason, the time-consuming masking operation can be omitted, and the operation is simplified and advantageous in terms of cost.

  Other configurations, operations, operational effects, modifications, and the like in this embodiment are the same as those in the first embodiment. The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

The perspective view which decomposes | disassembles and shows the lighting fixture which concerns on 1st embodiment of this invention. The reflector of a lighting fixture is similarly shown, (a) is a top view of a reflector, (b) is the figure cut along the AA line of (a) in the state which engaged the cover member with the reflector. Similarly, it is a cross-sectional view showing a state in which the cover member of the lighting fixture is engaged with the reflector, with part cut away, (a) showing the state immediately before engaging, and (b) showing the groove in the groove The figure which shows the state which got on, (c) is a figure which shows the state by which the collar part was latched by the step part. The side view which similarly showed the lighting fixture in the cross section of the accommodating part of the instrument main body. Sectional drawing which shows the state which accommodates the reflector which similarly engaged the cover member in the instrument main body, with a part cut away. The perspective view which shows the state which similarly installed the lighting fixture in the wiring guide. Sectional drawing which cuts off some LED bulbs which are the modification of a lighting fixture similarly, and shows. The perspective view which decomposes | disassembles and shows the lighting fixture which concerns on 2nd embodiment of this invention. Sectional drawing which shows the state which accommodated the reflector which similarly engaged the cover member in the instrument main body, with a part cut away.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Light source 12 Board | substrate 13 Reflector 13b Reflecting surface 13f Side wall part 14 Cover member 14c Locking part 15 Instrument main body

Claims (2)

With a light source;
A reflector having an annular side wall and a reflecting surface provided inside the side wall for reflecting light from the light source;
A translucent cover member that covers the reflecting surface of the reflector and has a locking portion that locks the side wall of the reflector;
An instrument main body that contains and holds the reflecting portion that locks the cover member and restricts the movement of the locking portion in the outward direction with respect to the side wall portion;
The lighting fixture characterized by comprising. A semiconductor light emitting device;
An annular side wall and a reflector having conductivity on the inside of the side wall and having a reflecting surface for reflecting the light of the semiconductor light emitting element;
A translucent cover member that covers the reflecting surface of the reflector and includes a non-conductive covering portion that has a locking portion that locks the side wall of the reflector and covers the side wall;
A reflector that locks the cover member, enclosing and holding the locking portion, restricting movement of the locking portion in the outward direction with respect to the side wall portion, and an instrument body made of a conductive member;
The lighting fixture characterized by comprising.

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