JP5320609B2 - Lamp apparatus and lighting apparatus - Google Patents

Lamp apparatus and lighting apparatus Download PDF

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Publication number
JP5320609B2
JP5320609B2 JP2009111186A JP2009111186A JP5320609B2 JP 5320609 B2 JP5320609 B2 JP 5320609B2 JP 2009111186 A JP2009111186 A JP 2009111186A JP 2009111186 A JP2009111186 A JP 2009111186A JP 5320609 B2 JP5320609 B2 JP 5320609B2
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Prior art keywords
lamp
light
main
substrate
socket
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Expired - Fee Related
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JP2009111186A
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Japanese (ja)
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JP2010262781A (en
Inventor
敏也 田中
武志 久安
恵一 清水
愛子 平賀
淳一郎 山本
勝友 内野
仁志 河野
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東芝ライテック株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/02Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/04Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/502Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Description

The present invention, lamp device, and a lighting fixture using the lamp device.

  Conventionally, for example, there is a lamp device using a GX53 type base. This lamp device is generally flat and is made of metal in which a GX53-type base is provided on one surface side of the lamp device body, and a flat fluorescent lamp is disposed as a light source on the other surface side of the lamp device body. A cover is disposed and a translucent cover is disposed to cover the fluorescent lamp. A pair of lamp pins protrudes from the upper surface of the base, and a lighting circuit that turns on the fluorescent lamp by receiving power from the lamp pins is housed inside the base. And the heat which arises by lighting of a fluorescent lamp is thermally radiated outside from a metal cover, and the thermal influence on a lighting circuit etc. is controlled (for example, refer to patent documents 1).

JP 2008-140606 A (page 5-9, FIG. 1-3)

  Since the light source generates heat when the lamp device is turned on, heat dissipation is necessary. In particular, when an LED that generates a larger amount of heat than the discharge lamp is used as the light source, if sufficient heat dissipation is not performed, the temperature of the LED itself increases, causing the LED to thermally deteriorate and shorten the life. End up.

  In the lamp device using the GX53 type base, a fluorescent lamp is used as a light source. However, simply using an LED instead of a fluorescent lamp does not ensure sufficient heat dissipation, and supports high output of the LED. There is a problem that cannot be done.

  This invention is made | formed in view of such a point, and it aims at providing the lamp device which can improve heat dissipation, and the lighting fixture using this lamp device.

Lamp device according to claim 1 including a substrate emitters are mounted; and the cap to have a projecting portion in which a pair of connection terminals are externally thermally connected protrudes on one side from Rutotomoni center side provided A lighting circuit in which the input portion and the connection terminal are electrically connected and the output portion and the substrate are electrically connected; and the substrate is disposed in thermal contact with the inner surface side of the protruding portion, at least other And a lamp device main body in which a light emitting circuit emits light from the surface side and a lighting circuit is disposed on the other surface side of the substrate .

  The light emitter may have a semiconductor light emitting element such as an LED or an organic EL, for example. The mounting method on the substrate is, for example, a COB (Chip On Board) type in which chip-shaped LEDs are directly mounted on the substrate and wire-bonded, or an SMD (mounting light emitter with a connection terminal on which chip-shaped LEDs are mounted). Surface Mount Device) type or the like may be used. The number of light emitters mounted on the substrate may be one or more.

  The board | substrate should just have the one surface side which contacts the inner surface side of a protrusion part, and the other side surface in which a light-emitting body is mounted, for example.

  The lamp device main body is provided with a connection terminal, and a part of the lamp device main body may form, for example, a GX53 type base. In this case, the base may be integral with or separate from the lamp device main body, but in order to improve heat dissipation, the base is made of metal having excellent thermal conductivity, and the base is attached to the socket device and the socket device or lighting fixture. It is preferable to be configured so as to be in thermal contact with the instrument body. The inside of the lamp device main body is composed of a space portion that is opened toward the other surface side so that the light of the light emitter can be emitted, and it is possible to arrange the substrate on the inner surface side of the protruding portion and to emit the light of the light emitter. Become. Further, the term “thermal contact” includes contact that allows heat conduction such as surface contact.

  Moreover, although the translucent glove | cover etc. which cover the other surface side of a lamp device main body may be comprised, it is not an essential structure of this invention.

The lamp device according to claim 2 is the lamp device according to claim 1 , comprising a cylindrical light control body that opens to one side and the other side, and the base includes an annular surface on which a connection terminal is provided, The lighting circuit is housed and disposed in an annular space between the light control body and inside the annular surface .

Lamp apparatus Motomeko 3 wherein, in the lamp device according to claim 1 or 2, wherein at least braking is emitted from the other surface side light of the light emitting element lamp device body, the other surface with respect to the lamp device body It is arranged so as to be able to advance and retreat in the lateral direction.

  The light control body may be, for example, a reflector, a lens, or a combination thereof. Further, the relative position of the light control body with respect to the light emitter may be variably adjusted so that the light distribution can be adjusted.

The lighting fixture according to claim 4 is a fixture main body; a socket device provided in the fixture main body; and is detachably attached to the socket device, and the protrusion of the lamp device main body is in thermal contact with the fixture main body in the mounted state. A lamp device according to any one of claims 1 to 3.

The instrument body may be made of metal, for example, and the reflector may be provided integrally or separately. The term “the projection of the socket device is in thermal contact with the appliance main body” includes, for example, that the end surface of the projection comes into surface contact with the appliance main body so as to allow heat conduction. Further, when the lamp device is mounted on the socket body on the side of the fixture body, a part of the fixture body may be pressed against the protrusion of the lamp device body to improve the thermal conductivity.

According to the lamp device according to claim 1, in thermal contact with placing a substrate on the inner surface side of the projecting portion provided on one side of the lamp device body, the light emitting from the at least another face side of the lamp device body Since the light of the body is emitted, it is possible to efficiently dissipate the heat generated by the light emitter by conducting heat from the protruding part to, for example, the socket device or the fixture body of the lighting fixture, and the heat dissipation can be improved. In addition, a narrow-angle light distribution can be easily obtained. Furthermore, by arranging the substrate on the protruding portion of the socket device main body and arranging the lighting circuit on the other side of the substrate , the space can be effectively utilized and the miniaturization can be realized.

According to the lamp device of the second aspect, in addition to the effect of the lamp device of the first aspect , the lighting circuit is arranged inside the annular surface of the base and is annular between the cylindrical light control body. Since the light is stored in the space portion, the light emitted from the light emitter is not affected, and desired optical characteristics can be secured.

  According to the lamp device of the third aspect, in addition to the effect of the lamp device of the first or second aspect, the light of the light emitting body disposed inside the protruding portion of the lamp device main body is controlled by a light control body capable of moving back and forth. Since the light is emitted from at least the other surface side of the lamp device main body, the light from the light emitter can be efficiently extracted outside the lamp device main body, and desired light distribution characteristics such as narrow-angle light distribution can be ensured.

  According to the lighting fixture of Claim 4, a lamp device can provide the lighting fixture with a long lifetime.

It is sectional drawing of the lamp device and lighting fixture which show the 1st Embodiment of this invention. It is a perspective view of a lamp device and a socket device same as the above. It is sectional drawing of the lamp device which shows the 2nd Embodiment of this invention. It is sectional drawing of the lamp device which shows the 3rd Embodiment of this invention. It is sectional drawing of the lamp device which shows the 4th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a first embodiment. FIG. 1 is a sectional view of a lamp device and a lighting fixture, and FIG. 2 is a perspective view of the lamp device and a socket device.

  The lighting fixture 11 is, for example, a downlight, and includes a fixture main body 12, a socket device 13 attached to the fixture main body 12, and a lamp device 14 that can be attached to and detached from the socket device 13. Hereinafter, these directional relationships such as the vertical direction will be described with the base side of the lamp device 14 as the upper side and the globe side as the lower side, based on the state in which the lamp device 14 is mounted horizontally.

  The instrument body 12 is made of metal and has a reflector integrally formed, and includes a circular flat plate portion 17 and a reflective plate portion 18 that is bent downward from the periphery of the flat plate portion 17 in a curved shape. Yes. The diameter of the reflecting plate portion 18 is increased toward the lower side.

  The socket device 13 corresponds to a GX53 type base, and has a cylindrical socket device body 21 made of synthetic resin having insulation properties. An insertion hole 22 is formed at the center of the socket device body 21. It is formed to penetrate in the vertical direction.

  A pair of socket portions 24 are formed on the lower surface of the socket device body 21. These socket portions 24 are formed with connection holes 25, and a receiving member (not shown) for supplying power to the inside of the connection holes 25 is disposed. The connection hole 25 is an arcuate groove portion that is rotationally symmetric with respect to the center of the socket device main body 21, and an enlarged diameter portion 26 is formed at one end of the arcuate groove portion.

  Further, the lamp device 14 includes a flat lamp device main body 31 having a GX53-type base 30 provided on the upper surface side, which is one surface side, a module substrate 32 disposed inside the base 30 of the lamp device main body 31, and a light control. Body 33, a glove 34 attached to the lower surface side which is the other surface side of the lamp device main body 31, and a lighting circuit 35 accommodated in the lamp device main body 31, and the dimension in the height direction from the base 30 to the glove 34 Is formed into a small flat shape.

  The lamp device main body 31 is entirely formed of a metal material such as aluminum having excellent heat dissipation, and a base GX53 type base 30 is integrally formed on the upper surface side. Space portions 37 and 38 are formed inside the base 30 and inside the lamp device main body 31, respectively, and an opening portion where the space portions 37 and 38 open is formed on the lower surface of the lamp device main body 31.

  An annular contact surface 39 that contacts the lower surface of the socket device 13 is formed on the base 30, and a cylindrical protrusion 40 that can be fitted into the insertion hole 22 of the socket device 13 from the center of the contact surface 39. Is protruding. On the contact surface 39, a lamp pin 41 as a pair of conductive metal connection terminals protrudes through an insulating material 42. A large-diameter portion 43 is formed at the tip of these lamp pins 41. Then, by inserting the large diameter portion 43 of each lamp pin 41 from the enlarged diameter portion 26 of each connection hole 25 of the socket device 13 and rotating the lamp device 14 by a predetermined angle, the lamp pin 41 extends from the enlarged diameter portion 26 to the connection hole. 25, the lamp pin 41 is electrically contacted with a receiver disposed inside the connection hole 25, the large diameter portion 43 is caught on the edge of the connection hole 25, and the lamp device 14 is attached to the socket device 13. Retained.

  The module substrate 32 includes a substrate 44 and one or a plurality of chip-shaped LEDs 45 which are semiconductor light emitting elements as light emitters mounted at the center of the substrate 44. The substrate 44 has, for example, a substrate body formed in a circular and flat plate shape with a metal material having excellent thermal conductivity such as aluminum, and the protrusion 40 of the base 30 is formed on one side of the substrate body. A contact surface that is in thermal contact with the top side inner wall surface 30a is formed, and a mounting surface for mounting the LED 45 is formed on the other surface side of the substrate body. On the mounting surface, a wiring pattern is formed on the substrate body via an insulating layer, and the LED 45 is surface-mounted on the wiring pattern and is electrically connected and mechanically fixed. The module substrate 32 is in a state in which the contact surface of the substrate 44 is in thermal contact with the top inner wall surface 30a of the protrusion 40 of the base 30 so that the LED 45 is positioned at the center of the lamp device 14. It is fixed.

  The light control body 33 is a reflector 46, and is formed in an annular shape at a cylindrical reflection surface portion 47 that opens in the vertical direction and expands downward in a curved shape, and a lower peripheral edge of the reflection surface portion 47. A support plate portion 48 is provided. The support plate portion 48 is fixed to the peripheral portion of the lower surface of the lamp device main body 31 by screwing or the like.

  The globe 34 is made of translucent transparent or light diffusing glass or synthetic resin, and is attached to the lower surface of the lamp device body 31 so as to cover the reflector 46 and the like.

  The lighting circuit 35 is housed and disposed in an annular space portion inside the contact surface 39 of the base 30 and between the outer peripheral surface of the reflection surface portion 47 of the reflector 46 in the space portion 38 of the lamp device body 31. ing. The lamp pin 41 is electrically connected to the input part of the lighting circuit 35, and the module substrate 32 is electrically connected to the output part of the lighting circuit 35.

  Then, in order to attach the thus configured lamp device 14 to the socket device 13, each lamp pin 41 of the lamp device 14 is inserted in accordance with the enlarged diameter portion 26 of each connection hole 25 of the socket device 13. After the lamp device 14 is raised, the lamp device 14 is rotated by a predetermined angle in the mounting direction, and each lamp pin 41 is moved from the enlarged diameter portion 26 to the connection hole 25, so that each lamp pin 41 is located inside the connection hole 25. The large diameter portion 43 of each lamp pin 41 is hooked on the edge of the connection hole 25 so that the lamp device 14 can be attached to the socket device 13.

  In a state where the lamp device 14 is mounted on the socket device 13, the base 30 is fitted into the socket device 13, and the upper surface of the protrusion 40 of the base 30 is in surface contact with the flat plate portion 17 of the fixture body 12 so that heat conduction is possible. Contact.

  Further, when the LED 45 of the lamp device 14 is turned on, the direct light emitted from the LED 45 and passing through the inside of the reflecting surface portion 47 of the reflector 46 is irradiated to the lower side of the lamp device 14 through the globe 34 and emitted from the LED 45. Then, the reflected light reflected by the reflecting surface portion 47 of the reflector 46 is irradiated to the lower side of the lamp device 14 through the globe 34. The light irradiated below the lamp device 14 has a narrow-angle light distribution by the reflecting surface portion 47 of the reflector 46, and becomes a light distribution suitable for downlights and spotlights.

  Further, when the LED 45 of the lamp device 14 is turned on, the heat generated from the LED 45 can be efficiently conducted from the substrate 44 to the projecting portion 40 of the base 30, and the heat conducted to the base 30 projects from the base 30. It is possible to efficiently conduct heat from the portion 40 to the instrument body 12, and to efficiently radiate heat from the instrument body 12. Therefore, the temperature rise of LED45 can be suppressed and the lifetime of LED45 can be lengthened.

  Thus, in the lamp device 14, the substrate 44 of the module substrate 32 is disposed in thermal contact with the inside of the base 30 of the flat lamp device main body 31, so that the heat generated by the LEDs 45 mounted on the substrate 44 is generated. It is possible to efficiently dissipate heat by conducting heat from the base 30 to the instrument body 12, the socket device 13, and the like, and heat dissipation can be improved.

  Furthermore, by arranging the substrate 44 on the protruding portion 40 of the base 30 of the lamp device main body 31, space can be used effectively and the lamp device 14 can be miniaturized.

  Further, since the lighting circuit 35 has the base 30 disposed inside the annular contact surface 39 of the lamp device main body 31, the light emitted from the LED 45 is not affected and the desired optical characteristics can be secured.

  In addition, the reflector 46 causes the light of the LED 45 disposed inside the protrusion 40 of the base 30 to be emitted from the lower surface side of the lamp device main body 31, so that the reflector 46 having a desired size and shape is provided on the protrusion 40. The LED 45 can also be arranged on the inner side, the light of the LED 45 can be efficiently taken out of the lamp device main body 31, and desired light distribution characteristics such as narrow-angle light distribution can be secured.

  Next, FIG. 3 shows a second embodiment, and FIG. 3 is a sectional view of the lamp device.

  The light control body 33 is a combination of a reflector 46 and a light guide plate 51, and an annular light guide plate 51 is disposed on the lower end side of the reflection surface portion 47 of the reflector 46. Then, the light of the LED 45 enters the light guide plate 51 from the inner peripheral surface of the light guide plate 51 and exits from the lower surface of the light guide plate 51, so that the entire light can be seen from the lower surface side of the globe 34.

  Next, FIG. 4 shows a third embodiment, and FIG. 4 is a sectional view of the lamp device.

  A prism 54 is used as the light control body 33. The prism 54 is formed with a prism portion 56 having an incident surface 55 that faces the LED 45 and enters light, and the lower surface of the lamp device main body 31. A light guide portion 57 disposed so as to be closed is formed, and the entire lower surface of the prism portion 56 and the light guide portion 57 is an emission surface 58 that emits light. Then, the light of the LED 45 enters from the incident surface 55 of the prism 54 and exits from the exit surface 58 of the lower surface, so that the entire surface can be illuminated as viewed from the lower surface side of the globe 34. In this case, a wider light distribution characteristic than the narrow angle light distribution can be obtained.

  Next, FIG. 5 shows a fourth embodiment, and FIG. 5 is a sectional view of the lamp device.

  The light control body 33 is a combination of a reflector 46 and a lens 61, and a double-sided convex lens 61 is attached to the lower surface opening of the reflection surface portion 47 of the reflector 46.

  Further, a male screw 62 is formed along the circumferential direction on the peripheral surface portion of the lamp device main body 31, and a screwing portion 64 having a female screw 63 that is screwed with the male screw 62 is formed around the support plate portion 48 of the reflector 46. ing. The globe 34 is attached to the reflector 46.

  Then, the direct light emitted from the LED 45 and passing through the inside of the reflection surface portion 47 of the reflector 46 enters the lens 61, and the reflected light emitted from the LED 45 and reflected by the reflection surface portion 47 of the reflector 46 enters the lens 61. Incident light is collected by the lens 61 and irradiated to the lower side of the lamp device 14 through the globe 34. Therefore, the light irradiated below the lamp device 14 becomes a narrow-angle light distribution collected by the lens 61, and becomes a light distribution suitable for downlights and spotlights.

  Further, the lens 46 and the globe 34 are attached to the LED 45 by rotating the reflector 46 with respect to the lamp device main body 31 through screwing of the male screw 62 of the lamp device main body 31 and the female screw 63 of the reflector 46. Including the reflector 46 as a whole can be moved in the optical axis direction. As shown by the solid line in FIG. 5, in the state where the reflector 46 and the lens 61 are close to the LED 45, a wide light distribution is obtained, and as shown by the two-dot chain line in FIG. In the state where 46 and the lens 61 are separated from each other, a narrow-angle light distribution is obtained, and the light distribution can be arbitrarily adjusted according to the usage pattern of the lamp device 14.

11 Lighting equipment
12 Instrument body
13 Socket device
14 Lamp device
30 base
31 Lamp unit
33 Light control body
35 lighting circuit
39 Contact surface that is an annular surface
40 Protrusion
41 Lamp pin as connection terminal
44 substrate
45 LED as light emitter

Claims (4)

  1. A substrate on which a light emitter is mounted;
    And the base to have a projecting portion in which a pair of connection terminals are externally thermally connected protrudes on one side from Rutotomoni center side is provided;
    A lighting circuit in which the input unit and the connection terminal are electrically connected and the output unit and the substrate are electrically connected;
    A lamp device main body in which the substrate is disposed in thermal contact with the inner surface side of the projecting portion, the light of the light emitter is emitted from at least the other surface side , and the lighting circuit is disposed on the other surface side of the substrate ;
    A lamp device comprising:
  2. It has a cylindrical light control body that opens to one side and the other side,
    The base has an annular surface on which a connection terminal is provided,
    The lamp device according to claim 1 , wherein the lighting circuit is housed and disposed in an annular space between the light control body and inside the annular surface .
  3. The light control body for emitting the light of the light emitting body from at least the other surface side of the lamp device main body is disposed so as to be able to advance and retreat in the direction of the other surface side with respect to the lamp device main body. The lamp device as described.
  4. An instrument body;
    A socket device provided in the instrument body;
    The lamp device according to any one of claims 1 to 3, wherein the lamp device is detachably attached to the socket device, and the protruding portion of the lamp device body is in thermal contact with the fixture body in the attached state;
    The lighting fixture characterized by comprising.
JP2009111186A 2009-04-30 2009-04-30 Lamp apparatus and lighting apparatus Expired - Fee Related JP5320609B2 (en)

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Application Number Priority Date Filing Date Title
JP2009111186A JP5320609B2 (en) 2009-04-30 2009-04-30 Lamp apparatus and lighting apparatus

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JP4528277B2 (en) * 2006-03-31 2010-08-18 三菱電機株式会社 Lighting equipment
JP4666267B2 (en) * 2006-11-30 2011-04-06 東芝ライテック株式会社 Lamp apparatus and lighting apparatus
JP2009048920A (en) * 2007-08-22 2009-03-05 Tokai Kogaku Kk Illumination device

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