JP2012160332A - Lamp device and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp device capable of obtaining a necessary light distribution control.SOLUTION: The lamp device 18 includes a light emitting element, a lighting up circuit 25, an optical component 24, a case 21, and a translucent cover 26. The lighting up circuit 25 lights up the light emitting element. The optical component 24 has different light distribution characteristics in accordance with a light distribution control of light from the light emitting element. The case 21 has an opening 28a on one face side and a base 30 on the other face side, and has the light emitting element and the lighting up circuit 25 accommodated inside and moreover can accommodate also the optical component 24 having different light distribution characteristics in accordance with the light distribution control. The translucent cover 26 is arranged on the opening 28a of the case 21.

Description

  Embodiments described herein relate generally to a lamp device using a light emitting element and a lighting fixture using the lamp device.

  Conventionally, as a lamp device using a light emitting element, for example, there is a flat lamp device using a GX53 type base. In such a lamp device, one type of light distribution characteristic for irradiating light from the light emitting element is determined. Therefore, necessary light distribution control is obtained by using optical components such as a reflector, a globe, and a light shielding plate on the side of the luminaire on which the lamp device is mounted.

JP 2010-262781

  In order to obtain the necessary light distribution control, the lamp device cannot cope with it, so it must be handled on the side of the luminaire on which the lamp device is mounted, and the luminaire is complicated and large.

  The problem to be solved by the present invention is to provide a lamp device capable of obtaining necessary light distribution control, and a lighting fixture using the lamp device.

  The lamp device according to the embodiment includes a light emitting element, a lighting circuit, an optical component, a housing, and a translucent cover. The lighting circuit lights the light emitting element. The optical component has different light distribution characteristics according to the light distribution control of light from the light emitting element. The housing is provided with an opening on one side, a base on the other side, and contains a light emitting element and a lighting circuit inside, as well as optical components having different light distribution characteristics according to light distribution control. Make it possible. The translucent cover is disposed in the opening of the housing.

  According to the present invention, the necessary light distribution control can be obtained only by the lamp device, and it can be expected that the lighting apparatus is simplified and miniaturized.

It is sectional drawing of the lamp device using the wide angle type optical component which shows one Embodiment. It is sectional drawing of the lamp device using the same middle angle type optical component same as the above. It is a perspective view of the decomposition | disassembly state of a lamp device same as the above. It is a perspective view of one surface of a lamp device same as the above. It is a perspective view of the other surface of a lamp device same as the above. It is sectional drawing of the lighting fixture using a lamp apparatus same as the above. It is a perspective view of the decomposition | disassembly state of a lamp device same as the above.

  Hereinafter, an embodiment will be described with reference to the drawings.

  As shown in FIGS. 6 and 7, the lighting fixture 11 is an embedded lighting fixture such as a downlight, and is embedded in a circular embedded hole 13 provided in the installation portion 12 such as a ceiling panel. Installed.

  The lighting fixture 11 includes a fixture main body 15, a socket 16 and a radiator 17 fixed integrally with the fixture main body 15, a flat lamp device 18 that is detachably attached to the socket 16, and the like.

  In the following description, on the basis of the state in which the luminaire 11 is installed horizontally and the flat lamp device 18 is horizontally attached to the luminaire 11, one surface of the lamp device 18 is placed below (for example, the lower surface, the lower side, (Lower part, lower end, etc.) and other surfaces will be described as upper (eg, upper face, upper part, upper part, upper end, etc.).

  First, as shown in FIGS. 1 to 5, the lamp device 18 includes a flat cylindrical casing 21, a heat conductive sheet 22 attached to the upper surface of the casing 21, and the casing 21. The light emitting module 23, the optical component 24, the lighting circuit 25, and the translucent cover 26 attached to the lower surface of the housing 21 are provided.

  The housing 21 has a cylindrical case 28 and a cylindrical base member 29 attached to the upper surface of the case 28. A base part 30 is configured by the upper surface side of the case 28 and the base member 29 protruding from the upper surface of the case 28.

  The case 28 is made of, for example, an insulating synthetic resin, and includes a flat plate portion 31 on the upper surface and a peripheral surface portion 32 that protrudes downward from the peripheral portion of the flat plate portion 31. An opening 28 a is formed on the lower surface of the case 28.

  An insertion hole 33 is formed at the center of the flat plate portion 31, a plurality of attachment holes 34 are formed on the outer diameter side of the insertion hole 33, and a plurality of insertion holes 35 are formed on the outer diameter side of the attachment holes 34. (See FIG. 2. The details are omitted in FIG. 1). An annular outer periphery side substrate support portion 36 and an annular inner periphery side substrate support portion 37 that support the lighting circuit 25 (circuit board 68) are formed on the periphery of the flat plate portion 31 and the edge portion of the insertion hole 33, respectively. ing. The outer peripheral board support portion 36 is formed in a groove shape into which the lighting circuit 25 (circuit board 68) is fitted. A wiring guide portion 38 that is located on the outer diameter side of the substrate support portion 37 and protrudes downward from the substrate support portion 37 is formed at one location of the substrate support portion 37 on the inner peripheral side. Thus, a wiring passage 39 communicating with the upper and lower surfaces of the flat plate portion 31 and the insertion hole 33 is formed. The wiring guide portion 38 is formed with a pair of side wall portions 38a from the substrate support portion 37 toward the outer diameter side, and an outer wall portion 38b is formed on the outer diameter side of the pair of side wall portions 38a, thereby forming a substantially U-shaped cross section. Is formed.

  A plurality of optical component support portions 40 that support the optical component 24 are formed on the inner peripheral surface of the peripheral surface portion 32, and a plurality of mounting grooves 41 are formed in the vicinity of the opening 28a. A rib 40a that stops the rotation of the optical component 24 is formed on one optical component support portion 40. On the upper side of the outer peripheral surface of the peripheral surface portion 32, an uneven portion 32a for increasing the surface area is formed.

  The base member 29 is made of, for example, a metal such as aluminum die casting, ceramics, or a material having excellent thermal conductivity, and has an upper end surface portion 42 and a peripheral surface portion 43 projecting downward from the periphery of the end surface portion 42. have. A plurality of bosses 45 to which a plurality of screws 44 for fixing the case 28 and the base member 29 are screwed through a plurality of mounting holes 34 of the case 28 are formed inside the peripheral surface portion 43.

  A heat conduction part 46 protruding toward the case 28 is integrally formed at the center of the lower surface of the end face part 42, and a flat attachment surface 47 for attaching the light emitting module 23 is formed on the lower surface of the heat conduction part 46. A plurality of mounting holes 48 are formed in the surface 47. An annular restricting portion 49 is formed to protrude from the upper surface of the end face portion 42, and the heat conductive sheet 22 is attached to the inside of the restricting portion 49. As the restricting portion 49, the upper surface of the end surface portion 42 may be recessed according to the shape of the heat conductive sheet 22.

  A plurality of key grooves 50 are formed in the peripheral surface portion 43. Each key groove 50 has a vertical groove 50a formed along the vertical direction in communication with the upper surface of the base member 29, and a horizontal groove 50b formed along the circumferential direction of the peripheral surface portion 43 below the peripheral surface portion 43. It is formed in a substantially L shape. Further, a plurality of keys 51 are formed in the peripheral surface portion 43 so as to protrude between the plurality of key grooves 50. In the present embodiment, three key grooves 50 and three keys 51 are provided, but at least two are sufficient, and there may be four or more.

  The heat conductive sheet 22 is in close contact with the heat radiating body 17 when the lamp device 18 is mounted on the lighting fixture 11, and efficiently conducts heat from the lamp device 18 to the heat radiating body 17. The heat conductive sheet 22 is, for example, an elastic silicone sheet that is attached to the end face portion 42 inside the restricting portion 49 of the base member 29, and a metal foil such as aluminum, tin, or zinc that is attached to the upper surface of the silicone sheet. It is configured in a disc shape. The metal foil has a lower surface frictional resistance than the silicone sheet.

  The light emitting module 23 includes a substrate 53, a light emitting portion 54 formed on the lower surface of the substrate 53, a connector 55 mounted on the lower surface of the substrate 53, a frame-shaped holder 56 that holds the periphery of the substrate 53, and the substrate 53. And a heat conduction sheet 57 interposed between the attachment member 47 of the heat conduction part 46 of the base member 29 to which the substrate 53 is attached.

  The substrate 53 is formed in a flat plate shape with a material such as metal or ceramics having excellent thermal conductivity, for example.

  In the light emitting unit 54, a light emitting element called a semiconductor light emitting element such as an LED element or an EL element is used as a light source. In the present embodiment, an LED element is used as the light emitting element, and a COB (Chip On Board) system in which a plurality of LED elements are mounted on a substrate is employed. That is, a plurality of LED elements are mounted on a substrate, the plurality of LED elements are electrically connected in series by wire bonding, and a plurality of phosphor layers, for example, a transparent resin such as silicone resin mixed with a phosphor, are used. The LED element is integrally covered and sealed. For example, an LED element that emits blue light is used as the LED element, and a phosphor that emits yellow light by being excited by part of the blue light from the LED element is mixed in the phosphor layer. Therefore, the light emitting unit 54 is configured by the LED element and the phosphor layer, and the surface of the phosphor layer which is the surface of the light emitting unit 54 becomes a light emitting surface, and white illumination light is emitted from this light emitting surface. In addition, as a light emission part, you may use the system which mounts two or more SMD (Surface Mount Device) packages with a connecting terminal with which the LED element was mounted in the board | substrate.

  The connector 55 is electrically connected to the light emitting element.

  The holder 56 holds the substrate 53, and a heat conductive sheet between the heat conductive portion 46 of the base member 29 by a plurality of screws 58 screwed into the plurality of mounting holes 48 of the heat conductive portion 46 of the base member 29. 57 and the substrate 53 are fixed in a sandwiched state. As a result, the substrate 53 is brought into close contact with the heat conducting portion 46 of the base member 29 via the heat conductive sheet 57, and good thermal conductivity from the substrate 53 to the base member 29 is ensured.

  As the heat conductive sheet 57, for example, a metal foil such as aluminum, tin, or zinc may be used in addition to the silicone sheet. By using the metal foil, the deterioration due to heat is smaller than that of the silicone sheet, and the heat conduction performance can be maintained over a long period of time.

  The optical component 24 is configured by a cylindrical reflector 60. The reflector 60 is made of, for example, an insulating synthetic resin, and is formed with a cylindrical light guide portion 61 whose upper and lower surfaces are opened and whose diameter is increased stepwise or continuously from the upper end side toward the lower end side. An annular cover portion 62 that covers the periphery of the lower surface of the case 28 is formed at the lower end of the light guide portion 61. On the inner surface of the light guide portion 61 and the lower surface of the cover portion 62, for example, a reflecting surface 63 having a high light reflectance such as white or a mirror surface is formed. As a means for forming the reflecting surface 63, an evaporation means such as aluminum can be used. In this case, the electrical insulation can be improved by masking the outer peripheral portion of the cover portion 62 to form a non-deposition surface.

  The light guide portion 61 penetrates the lighting circuit 25 (circuit board 68) and the insertion hole 33 of the case 28, protrudes into the base member 29, and is disposed opposite to the periphery of the light emitting portion 54. A board fitting part 64 that fits the lighting circuit 25 (circuit board 68) is formed in the middle part in the vertical direction on the outer peripheral surface of the light guide part 61, and the board support part 36 of the case 28, A substrate pressing portion 65 that holds the lighting circuit 25 (circuit substrate 68) is formed between the substrate 37 and the substrate 37.

  The cover portion 62 is formed with a plurality of holding claws 66 supported by the optical component support portions 40 of the case 28. As one embodiment, one holding claw 66 fits into the rib 40a of one optical component support portion 40, and the reflector 60 is prevented from rotating on the case 28.

  The reflector 60 is provided with a plurality of types of different light distribution characteristics according to the required light distribution control of the lamp device 18, and among these multiple types, according to the light distribution control required for the lamp device 18. One type is selected and used. For example, FIG. 1 shows a lamp device 18 that uses a wide-angle type reflector 60 with a wide light distribution, and FIG. 2 uses a medium-angle type reflector 60 with a slightly narrower light distribution than the wide-angle type. The lamp device 18 was shown. The wide-angle type reflector 60 and the medium-angle type reflector 60 are mainly different in the shape of the light guide portion 61. However, the board fitting portion 64 of the light guide portion 61, the holding plate 65 of the substrate holding portion 65 and the cover portion 62 are retained. Since 66 and the like are common to both the wide-angle type and the medium-angle type, both the wide-angle type and the medium-angle type reflectors 60 can be accommodated in the housing 21 in common. The plurality of types having different light distribution characteristics of the reflector 60 include a narrow-angle type with a narrow light distribution and other types in addition to the wide-angle type and the medium-angle type.

  Accordingly, the board fitting portion 64 of the reflector 60, the board pressing portion 65, the holding claw 66 of the cover portion 62, and the like are configured as a common mounting portion 60a having a shape common to different types of light distribution characteristics. Further, the substrate support portion 37 and the optical component support portion 40 of the housing 21 are configured as a common attachment portion 21a having a common shape to which the common attachment portion 60a of the reflector 60 is attached.

  Furthermore, the type of the reflector 60 is not limited to the shape, and the light distribution can be controlled by the light distribution characteristics of the reflective surface 63. When white, the light distribution can be controlled widely, and when the mirror surface is used. Light distribution can be controlled narrowly. The reflector 60 can be accommodated in the housing 21 and used regardless of which type is selected.

  The lighting circuit 25 includes, for example, a circuit for rectifying and smoothing a commercial power supply voltage, a DC / DC converter having a switching element that switches at a high frequency of several kHz to several hundred kHz, and the like, and a power source that outputs DC power of constant current Configure the circuit. The lighting circuit 25 includes a circuit board 68 and a circuit component 69 that is a plurality of electronic components mounted on the circuit board 68.

  The circuit board 68 is formed in an annular shape in which a circular opening 70 into which the upper part of the light guide part 61 of the reflector 60 passes and a board fitting part 64 is fitted is formed in the center part. The outer diameter of the circuit board 68 is formed to fit into the board support portion 36 of the case 28. A cutout portion 71 that is a wiring hole into which the wiring guide portion 38 of the case 28 is inserted and fitted is formed at the edge portion of the opening 70.

  The lower surface of the circuit board 68 is a mounting surface 68a for mounting discrete components having lead wires of the circuit components 69, and the upper surface is for connecting the lead wires of the discrete components and mounting surface mounting components of the lighting circuit components. This is a wiring pattern surface 68b on which a wiring pattern is formed.

  Of the circuit components 69 mounted on the mounting surface 68a of the circuit board 68, at least one of a large component having a high protruding height from the circuit substrate 68, a heat generating component having a large heat generation amount, and a heat-sensitive component such as an electrolytic capacitor. Preferably, all are mounted on the outside of the circuit board 68. In addition, on the annular circuit board 68, a component that becomes a noise generation source such as a switching element is mounted at a position away from the position of the power input portion on the opposite side in the circumferential direction.

  The circuit board 68 is arranged on the upper side in the case 28 with the wiring pattern surface 68b facing the flat plate portion 31 of the case 28 in parallel. The circuit component 69 mounted on the mounting surface 68a of the circuit board 68 is disposed between the peripheral surface portion 32 of the case 28 and the light guide portion 61 and the cover portion 62 of the reflector 60.

  A plurality of lamp pins 72 electrically connected to the circuit board 68 are press-fitted into the respective insertion holes 35 of the case 28 and vertically protrude above the case 28. That is, the plurality of lamp pins 72 protrudes vertically from the upper surface of the base part 30. The plurality of lamp pins 72 include at least two power input lamp pins 72, and may include two dimming signal lamp pins 72, one grounding lamp pin 72, and the like. That is, it is sufficient if at least two lamp pins 72 for power supply are provided, and other lamp pins 72 may not be provided, or may be dummy pins that are not connected to the circuit board 68 and are press-fitted and fixed in the insertion holes 35 of the case 28. Good. The lamp pin 72 may be press-fitted and fixed in the insertion hole 35 of the case 28 and electrically connected to the circuit board 68 with a lead wire. The lamp pin 72 is erected on the circuit board 68 and directly connected to the circuit board 68. May be.

  Further, the output terminal of the DC power source of the lighting circuit 25 and the connector 55 of the light emitting module 23 are electrically connected by the electric wire 73. For example, the electric wire 73 is an electric wire with a connector having connector tabs 73a and 73b attached at both ends, the connector 73a at one end is connected to the connector 55 of the light emitting module 23, and the connector 73b at the other end is mounted on the circuit board 68. It is connected to the connector of the circuit component 69. The electric wire 73 is passed through the electric wire passage 39 of the wiring guide portion 38 and penetrates the circuit board 68.

  The translucent cover 26 is made of, for example, synthetic resin or glass and has a disc shape so as to have translucency and diffusibility, and is attached to the case 28 so as to cover the opening 28a. A fitting portion 75 is formed around the upper surface of the translucent cover 26 so as to be fitted into the inner periphery of the peripheral surface portion 32 of the case 28. The fitting portion 75 is engaged with each mounting groove 41 of the peripheral surface portion 32 of the case 28. A plurality of locking claws 76 are formed. In a state where each locking claw 76 is locked to each mounting groove 41, each holding claw 66 of the reflector 60 is sandwiched and held between the fitting portion 75 and each optical component support portion 40. Note that the optical component support portion 40 of the case 28 is not used (in this case, a reinforcing rib may be used in place of the optical component support portion 40), and the fitting portion 75 of the translucent cover 26 and the circuit board 68 are used for the optical component. 24 may be sandwiched and held.

  At the peripheral portion of the lower surface of the translucent cover 26, finger hooks 77 constituted by a plurality of protrusions are provided at a plurality of locations on the circumference of the translucent cover 26, for example, at two locations. A triangular mark 78 indicating the mounting position is formed in one place. The shape of the finger rest portion 77 is arbitrary, and it is preferable that the finger rest portion 77 does not impair the appearance (is not conspicuous), does not hinder the light distribution, and is easy to operate when the lamp device 18 is attached / detached as described later.

  Note that the light distribution control of the lamp device 18 can also be performed by the translucent cover 26, and different types of light distribution characteristics can be used according to the necessary light distribution control of the lamp device 18. For example, there are types such as a difference in the degree of diffusion of the translucent cover 26 and the presence or absence of a Fresnel lens.

  In the lamp device 18 configured as described above, the lighting circuit 25 is disposed in the case 28, and the light emitting module is disposed in the base member 29 that is located on the base part 30 side from the position of the lighting circuit 25 in the case 28. 23 is disposed, and the light emitting module 23 is attached to the base member 29 by being thermally bonded. In addition, the light guide portion 61 of the reflector 60 is disposed in the opening 70 of the circuit board 68 and the insertion hole 33 of the case 28, and covers and conceals the lighting circuit 25 in the case 28 with the cover portion 62 of the reflector 60. Yes.

  In the lamp device 18 of the present embodiment, the input power (power consumption) of the light emitting module 23 is 20 to 25 W, and the total luminous flux is 1100 to 1650 lm.

  Next, as shown in FIGS. 6 and 7, the fixture body 15 of the lighting fixture 11 is also used as a reflector, and has an opening formed downward. A flange portion 81 projecting sideways is formed at the lower end of the instrument body 15, and a fitting hole 82 is formed on the upper surface of the instrument body 15. A triangular mark 83 indicating the mounting position of the lamp device 18 is provided at one place on the inner peripheral surface of the instrument body 15.

  The socket 16 includes a socket body 85 made of, for example, an insulating synthetic resin and formed in an annular shape, and a plurality of terminals (not shown) disposed in the socket body 85.

  In the center of the socket body 85, an insertion opening 86 through which the cap member 29 of the lamp device 18 is inserted is formed. A plurality of connection grooves 87 into which the lamp pins 72 of the lamp device 18 are inserted are formed in the bottom surface of the socket body 85 in the shape of a long hole along the circumferential direction.

  A plurality of key grooves 88 are formed on the inner peripheral surface of the socket body 85. Each key groove 88 is formed in a substantially L shape having a vertical groove 88a formed along the vertical direction and a horizontal groove 88b formed along the circumferential direction on the upper side of the socket body 85. Further, on the inner peripheral surface of the socket body 85, a plurality of keys 89 are formed to protrude between the plurality of key grooves 88. These key grooves 88 and 89 and the keys 51 and key grooves 50 of the lamp device 18 correspond to each other, and the lamp device 18 can be detachably attached to the socket 16.

  Each terminal is disposed on the upper side of each connection groove 87, and the lamp device 18 is attached to the socket 16, and each lamp pin 72 inserted into each connection groove 87 is electrically connected.

  In addition, the heat radiating body 17 is formed of a material such as a metal such as aluminum die casting, ceramics, or a resin excellent in heat dissipation. The heat radiating body 17 has a cylindrical base 91 and a plurality of heat radiating fins 92 projecting radially from the periphery of the base 91.

  On the lower surface of the central portion of the base 91, a circular protrusion 93 is formed while closing the lower surface of the base 91, and a planar contact surface 94 is formed on the lower surface of the protrusion 93.

  A plurality of attachment portions 95 are formed around the base portion 91 of the radiator 17, and attachment springs 96 for attaching the luminaire 11 to the installation portion 12 are attached to the attachment portions 95.

  On the upper surface of the heat radiating body 17, a mounting plate 99 to which a power supply terminal block 97 and a dimming signal terminal block 98 are attached is mounted.

  The lighting fixture 11 has a fitting hole 82 of the fixture body 15 fitted around the protrusion 93 of the radiator 17, and the fixture body 15 is sandwiched between the radiator 17 and the socket 16 and screwed. It is fixed. On the upper surface of the insertion opening 86 of the socket 16, the contact surface 94 of the heat radiating body 17 is disposed so as to be exposed.

  Next, assembly of the lamp device 18 will be described.

  The heat conductive sheet 22 and the light emitting module 23 are attached to the base member 29. An electric wire 73 connected to the connector 55 of the light emitting module 23 is drawn into the case 28 from the insertion hole 33, and the base member 29 is screwed to the case 28.

  The lighting circuit 25 is inserted into the case 28, the notch 71 of the circuit board 68 is fitted into the wiring guide part 38, the peripheral part of the circuit board 68 is fitted into the board support part 36 of the case 28, and the inner periphery of the circuit board 68 is inserted. The side upper surface is brought into contact with the substrate support portion 37. Further, for example, the lamp pin 72 that is press-fitted and fixed to the case 28 in advance or is press-fitted and fixed later is connected to the circuit board 68 by means such as wrapping. Further, when the lighting circuit 25 is inserted into the case 28, the electric wire 73 is passed through the wiring passage 39 of the wiring guide portion 38, and the electric wire 73 is connected to the connector on the mounting surface 68a side of the circuit board 68.

  The reflector 60 is inserted into the case 28, the light guide portion 61 of the reflector 60 is inserted into the opening 70 of the circuit board 68 and the insertion hole 33 of the case 28, and the board fitting portion 64 of the light guide portion 61 is circuited. The board holding part 65 of the light guide part 61 is brought into contact with the circuit board 68 by fitting into the opening part 70 of the board 68. Further, the holding claw 66 of the reflector 60 is disposed at a position facing the optical component support portion 40 of the case 28.

  The translucent cover 26 is fitted into the opening 28 a of the case 28, and the locking claw 76 of the translucent cover 26 is locked to the mounting groove 41 of the case 28. Thus, the fitting portion 75 of the translucent cover 26 abuts against the holding claw 66 of the reflector 60 and presses against the optical component support portion 40, and the holding claw 66 is sandwiched between the fitting portion 75 and the optical component support portion 40. The circuit board 68 is pressed against the board support parts 36 and 37 by the board holding part 65 of the reflector 60, and the circuit board 68 is sandwiched and held between the board holding part 65 and the board support parts 36 and 37.

  Therefore, by attaching the translucent cover 26 to the case 28, the circuit board 68 and the reflector 60 can be held between the case 28 and the translucent cover 26 and can be easily assembled.

  Next, attachment of the lamp device 18 to the lighting fixture 11 will be described.

  Insert the lamp device 18 through the opening on the lower surface of the fixture body 15, align the mark 78 displayed on the lamp device 18 with the mark 83 displayed on the inner surface of the fixture body 15, and push the lamp device 18 up to the socket 16. Plug in.

  Thereby, first, the base member 29 of the lamp device 18 is fitted into the insertion opening 86 of the socket 16, and then each key 89 of the socket 16 enters the vertical groove 50a of each key groove 50 of the base member 29, and Each key 51 of the base member 29 enters the longitudinal groove 88a of each key groove 88 of the socket 16, each lamp pin 72 of the lamp device 18 is inserted into each corresponding connection groove 87 of the socket 16, and then the base member 29 The upper surface comes into contact with the contact surface 94 of the heat radiating body 17 through the heat conductive sheet 22. At this time, the heat conductive sheet 22 abuts on the contact surface 94 of the radiator 17 and is compressed.

  With the lamp device 18 pressed against the heat radiating body 17, the lamp device 18 is rotated in the mounting direction. When the lamp device 18 is rotated, even if there is little space for the finger to enter between the peripheral surface of the lamp device 18 and the inner surface of the fixture body 15, the finger hook 77 protruding from the lower surface from the translucent cover 26 The lamp device 18 can be easily rotated by hooking a finger.

  By rotating the lamp device 18 in the mounting direction, each key 89 of the socket 16 enters and gets caught in the lateral groove 50b of each key groove 50 of the base member 29, and each key 51 of the base member 29 moves to each of the socket 16 The lamp device 18 is attached to the socket 16 by entering into the lateral groove 88b of the key groove 88 and being caught. In addition, each lamp pin 72 of the lamp device 18 moves in each connection groove 87 of each socket 16 and contacts and is electrically connected to each terminal disposed above each connection groove 87.

  When the lamp device 18 is mounted, the upper surface of the base member 29 of the lamp device 18 is in close contact with the contact surface 94 of the heat radiating body 17 via the heat conductive sheet 22, and heat is efficiently transferred from the lamp device 18 to the heat radiating body 17. Make it possible.

  When the lamp device 18 is removed from the lighting fixture 11, first, the lamp device 18 is rotated in the removal direction opposite to that when the lamp device 18 is mounted, so that the socket is inserted into the vertical groove 50a of each key groove 50 of the base member 29. As the 16 keys 89 move, the keys 51 of the base member 29 move to the vertical grooves 88a of the key grooves 88 of the socket 16, and the lamp pins 72 move in the connection grooves 87 of the sockets 16. It is separated from each terminal arranged above each connection groove 87. Subsequently, by moving the lamp device 18 downward, the lamp pins 72 are detached from the connection grooves 87 of the sockets 16, and the vertical grooves 50a of the key grooves 50 of the base member 29 are detached from the keys 89 of the socket 16. At the same time, each key 51 of the base member 29 is detached from the longitudinal groove 88a of each key groove 88 of the socket 16, and further, the base member 29 is detached from the insertion opening 86 of the socket 16, and the lamp device 18 can be removed from the socket 16. .

  Next, lighting of the lamp device 18 will be described.

  When power is supplied to the lighting circuit 25 from the power line through the terminal block 97, the terminal of the socket 16, and the lamp pin 72 of the lamp device 18, the lighting power is supplied from the lighting circuit 25 to the light emitting element of the light emitting module 23, and the light emitting element is turned on. . Light radiated from the light emitting portion 54 by turning on the light emitting element travels in the light guide portion 61 of the reflector 60, passes through the translucent cover 26, and is emitted from the lower surface opening of the instrument main body 15.

  In addition, the heat generated by the light emitting elements of the light emitting module 23 during lighting is mainly from the substrate 53 of the light emitting module 23 to the heat conducting portion 46 of the base member 29 that is thermally bonded through the heat conducting sheet 57. Heat conduction is efficiently conducted from the heat conduction portion 46 of the base member 29 to the heat radiating body 17 which is in close contact with the heat conduction sheet 22, and air is introduced from the surface of the heat radiating body 17 including the plurality of heat radiating fins 92. Heat is dissipated inside.

  A part of the heat conducted from the lamp device 18 to the heat radiating body 17 is conducted to the fixture body 15, the plurality of attachment springs 96, and the attachment plate 99, respectively, and is radiated from the air to the air.

  Further, the heat generated by the lighting circuit 25 is transmitted to the case 28 and the translucent cover 26 and is radiated from the surface of the case 28 and the translucent cover 26 to the air.

  In the lamp device 18 of the present embodiment configured as described above, the necessary light distribution control can be obtained only by the lamp device 18.

  When the lamp device 18 controlled to have a wide light distribution is provided, a reflector 60 having a wide-angle type shape may be used as shown in FIG.

  In order to provide a lamp device 18 controlled to have a light distribution slightly narrower than a wide light distribution using the reflector 60 of the wide-angle type shape of FIG. 1, as shown in FIG. The body 60 may be used.

  The wide-angle type reflector 60 and the medium-angle type reflector 60 are mainly different in the shape of the light guide portion 61, but the substrate fitting portion 64 of the light guide portion 61 and the substrate holding portion 65 and the cover portion 62 are held. Since the claw 66 and the like are common to the wide angle type and the medium angle type, both the wide angle type and the medium angle type reflector 60 can be accommodated in the housing 21 in common.

  As described above, since the reflectors 60 having different shapes according to the light distribution characteristics can be accommodated in the casing 21 in common, any reflector 60 among the reflectors 60 having different light distribution characteristics can be used. By selecting, the necessary light distribution control can be obtained only by the lamp device 18.

  In addition, the necessary light distribution control can be obtained by selecting the light-transmitting cover 26 having different light distribution characteristics.

  In this case, the reflector 60 is selected according to the required light distribution control, the basic reflector 60 is used in common, and the light-transmitting cover 26 having different light distribution characteristics is selected and combined. The light distribution can be adjusted. Alternatively, the necessary light distribution control can be obtained by combining the reflector 60 and the translucent cover 26 together.

  Also, the necessary light distribution control can be obtained by selecting the reflector 60 having a different light distribution characteristic of the reflection surface 63.

  In this case, the shape of the reflector 60 is selected according to the necessary light distribution control, the basic shape is made common, and the reflector 60 of the reflecting surface 63 having different light distribution characteristics is selected. The light distribution can be adjusted.

  Further, necessary light distribution control can be obtained by arbitrarily combining the reflectors 60 having different light distribution characteristics, the light-transmitting cover 26 having different light distribution characteristics, and the reflecting surface 63 having different light distribution characteristics.

  Thus, according to the lamp device 18 of the present embodiment, the necessary light distribution control can be obtained only by the lamp device 18. Therefore, in the lighting fixture 11 using the lamp device 18, it is not necessary to control light distribution by the fixture itself, and the lighting fixture 11 can be simplified and miniaturized.

  Further, since the optical component 24 having different light distribution characteristics according to the light distribution characteristics can be accommodated in the housing 21, the configuration other than the optical component 24 of the lamp device 18 can be used in common. The lamp device 18 with the necessary light distribution control can be provided simply by selecting the optical component 24 to be combined.

  In addition, the lamp device 18 incorporates the lighting circuit 25 and the optical component 24 in the housing 21 and further attaches the translucent cover 26, whereby the circuit board 68 of the lighting circuit 25 is interposed between the housing 21 and the optical component 24. The optical component 24 can be held between the casing 21 and the transparent cover 26 or between the circuit board 68 and the transparent cover 26 by pressing the optical component 24 against the casing 21 side with the transparent cover 26. The circuit board 68 and the optical component 24 are not individually fixed to the housing 21 such as screwing, and can be easily assembled. The configuration of the lamp device 18 can provide an advantageous effect of improving assemblability when applied to the lamp device 18 using the reflector 60 having different light distribution characteristics as in the above-described embodiment. Not only the optical component 24 having the light characteristic but also the advantageous effect of improving the assemblability can be obtained even when the lamp device 18 having the optical component 24 having the specific light distribution characteristic is used.

  The optical component 24 is not limited to the reflector 60 but may be a lens, a prism, a light guide member, or the like, or a combination thereof.

  Further, since the space for housing the lighting circuit 25 in the housing 21 is reduced because the optical component 24 is housed in the housing 21, for example, when the output is increased, the mounting area of the circuit board 68 is reduced. There may be a shortage. In such a case, a mounting area may be increased by arranging part or all of the circuit board 68 in parallel along the vertical direction that is the light irradiation direction.

  Further, as the circuit board of the lighting circuit 25, a flexible board may be used. When a flexible substrate is used, the flexible substrate is arranged along the inside of the peripheral surface portion 32 of the case 28, so that the mounting area of the flexible substrate can be increased and high output can be supported.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Lighting equipment
16 socket
18 Lamp device
21 housing
24 Optical components
25 Lighting circuit
26 Translucent cover
28a opening
30 Base part
68 Circuit board

Claims (4)

A light emitting element;
A lighting circuit for lighting the light emitting element;
An optical component having different light distribution characteristics according to light distribution control of light from the light emitting element;
An opening is provided on one side, a base is provided on the other side, and a light emitting element and a lighting circuit are accommodated inside, and optical components having different light distribution characteristics according to light distribution control can be accommodated in common. A housing to perform;
A translucent cover disposed in the opening of the housing;
A lamp device comprising: The lamp device according to claim 1, wherein the lighting circuit includes a circuit board, and the circuit board is sandwiched and held between the casing and the optical component. The lamp device according to claim 1, wherein the translucent cover holds the optical component pressed against the housing side. A lamp device according to any one of claims 1 to 3;
A socket for mounting the lamp device;
The lighting fixture characterized by comprising.

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