JP5246402B2 - Light bulb shaped lamp - Google Patents

Light bulb shaped lamp Download PDF

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Publication number
JP5246402B2
JP5246402B2 JP2008236558A JP2008236558A JP5246402B2 JP 5246402 B2 JP5246402 B2 JP 5246402B2 JP 2008236558 A JP2008236558 A JP 2008236558A JP 2008236558 A JP2008236558 A JP 2008236558A JP 5246402 B2 JP5246402 B2 JP 5246402B2
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heat
light
radiating
globe
lamp
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JP2008236558A
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JP2010073337A (en
JP2010073337A5 (en
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明日香 和田
愛子 高橋
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東芝ライテック株式会社
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Description

  The present invention relates to a light bulb shaped lamp that can be used in place of a general lighting bulb.
Conventionally, in a light bulb-type lamp using an LED as a light emitting element, a metal radiator that expands toward one end side is used, and a substantially hemispherical globe is attached to one end of the radiator, and the other end side of the radiator The base is attached to the radiator, and a substrate on which LEDs are provided inside the radiator and the globe is provided in contact with the radiator. And the light radiate | emitted from LED is permeate | transmitted and emitted | emitted, and the heat | fever which LED generate | occur | produces is mainly thermally radiated outside from a board | substrate through a heat sink (for example, refer patent document 1).
Japanese Patent Laid-Open No. 2001-243809 (page 2-3, FIG. 1-4)
  However, in a light bulb shaped lamp using an LED, the light emitted from the LED passes through the globe and is emitted in the direction opposite to the base, but the light in the direction of the base is shielded by the substrate and the radiator. The base side becomes dark, and light distribution close to that of a general lighting bulb cannot be obtained.For example, when it is mounted on a lighting fixture with a reflecting mirror, desired reflected light may not be obtained. is there.
  The present invention has been made in view of the above points, and provides a light bulb shaped lamp that can provide a light distribution close to that of a general lighting bulb while using a light emitter, and can improve compatibility with a lighting fixture. With the goal.
Self-ballasted lamp of claim 1, wherein the luminous body and; a heat conduction part that is mounted for heat transfer at one end the emitters of the lamp axis, projecting from the periphery of the heat-conducting portion radially and the lamp axis A plurality of radiating fins extending in the direction and gradually increasing in the radial direction toward one end in the lamp axis direction, and the heat conducting portions and the radiating fins are made of an integrally formed metal material. A glove that covers the light-emitting body at one end in the lamp axial direction, and that has a plurality of heat-radiating fins and a heat-radiating fin-facing portion that faces the gap between the heat-radiating fins, and the heat- radiating fin-facing portion has light diffusibility When, than the heat-conducting portion protrudes toward the inner space of the globe, the light emitter substrate attachment portion and the thermally conductive attachment to the heat conducting part; provided on the other end of the radiator The mouthpiece and; a lighting circuit for lighting a pre Symbol emitters; not from the heat radiating fins have a region that shields the light emitted from the gap of the heat radiating fins toward said mouthpiece, projecting to the radiating body and said ferrule And a case that insulates the radiator and the base and accommodates the lighting circuit .
  The light-emitting body should just emit light, for example, you may use solid light emitting elements, such as LED and organic EL.
  The heat radiating body is formed of, for example, a metal material containing aluminum with good heat dissipation. One end of the heat radiating body to which the substrate is attached may be a flat surface or a solid shape protruding into the globe. Between the plurality of heat dissipating fins of the heat dissipating body, openings are made toward one end side, the other end side and the periphery.
  The material and shape of the globe are not limited as long as it transmits light emitted from the light emitter. For example, a material such as glass or resin having light diffusibility may be integrally formed in a substantially spherical shape, or may be divided into a plurality of parts and combined in a substantially hemispherical shape.
  For example, a base that can be connected to a socket for a general lighting bulb such as E17 type or E26 type is used.
  The lighting circuit supplies, for example, a constant current DC power source to the LED.
Board mounting portion, for example, frustoconical, cylindrical, conical, may be any of such substantially hemispherical, only to be mounted a substrate on those surfaces.
The light bulb shaped lamp according to claim 2 is the light bulb shaped lamp according to claim 1, wherein the outer diameter of one end side of the heat radiating fin and the outer diameter of the heat radiating fin facing portion are the same.
The light bulb shaped lamp according to claim 3 is the light bulb shaped lamp according to claim 1 or 2, wherein the heat dissipating member has a groove-like shape on one end side surface outside the substrate mounting portion and inside the heat radiating fin. The attachment part fixed to the to-be-attached part is provided in the said glove | globe.
According to the light bulb shaped lamp of the present invention, the light from the light emitter passes through the heat radiating fin facing portion of the globe and is irradiated from the plurality of heat radiating fins to the periphery and the other end of the heat radiating body. A light distribution close to that of an illumination bulb can be obtained, and compatibility with a lighting fixture can be improved .
  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
  FIG. 1 is a sectional view of a part of a light bulb shaped lamp, and FIG. 2 is a side view of the light bulb shaped lamp.
  In FIG. 1 and FIG. 2, 11 is a light bulb shaped lamp, and this light bulb shaped lamp 11 has a plurality of light emitting bodies 12 which are LED modules attached to one end side of the heat radiating body 13 in the lamp axial direction. A globe 14 is attached to one end side of 13, and a case 16 containing a lighting circuit 15 is attached to the other end side of the radiator 13, and a base 17 is attached via this case 16 Is configured. The light bulb shaped lamp 11 has the same shape and dimension as a general lighting bulb.
  The light emitter 12 is configured by combining a plurality of substrates 21 three-dimensionally. On one surface of the substrate 21, LEDs 22 as a plurality of light emitting elements are mounted.
  The substrate 21 is made of, for example, a metal material such as aluminum having good heat dissipation or an insulating material. The other surface of the substrate 21 is tightly fixed so as to be in surface contact with the radiator 13. For fixing the substrate 21 to the heat radiator 13, a silicone-based adhesive having excellent heat transfer properties is used.
  The LED 22 includes, for example, a bare chip (not shown) that emits blue light and a resin part (not shown) formed of a silicone resin or the like that covers the bare chip. A phosphor that mainly emits yellow light, which is a complementary color of blue, is mixed, and each LED 22 is configured to obtain white illumination light.
  The heat radiator 13 is integrally formed of a metal material such as aluminum having good thermal conductivity, and a heat conducting portion 25 is formed in the center. The heat conducting portion 25 extends from the periphery of the heat conducting portion 25 along the lamp axis direction. A plurality of heat dissipating fins 26 are formed so as to project radially, and a substrate mounting portion 27 for attaching the light emitter 12 to one end of the heat conducting unit 25 is formed to project.
  The heat conducting portion 25 is formed in a cylindrical shape, and a substrate mounting portion 27 is formed so as to protrude from the central portion of the one end surface, and a groove shape for attaching the globe 14 to a peripheral portion outside the substrate mounting portion 27 on one end surface. A mounted portion 28 is formed.
  The heat radiating fins 26 are formed to be inclined so that the amount of protrusion in the radial direction gradually increases from the other end side of the heat radiating body 13 to the one end side. In addition, these radiating fins 26 are formed radially at substantially equal intervals in the circumferential direction of the radiating body 13, and a gap 29 is formed between these radiating fins 26. The gaps 29 are opened between the heat radiation fins 26 toward the one end side, the other end side, and the periphery of the heat dissipating body 13, respectively.
  The board mounting portion 27 protrudes to one end side from the mounted portion 28 of the radiator 13 to which the globe 14 is attached, that is, protrudes into the globe 14 and is an end surface portion 27a facing one end side in the lamp axis direction. And a peripheral surface portion 27b, and the peripheral surface portion 27b is formed in a truncated cone shape that tapers on one end side. A plurality of light emitters 12 are fixed to the end surface portion 27a and the peripheral surface portion 27b, respectively.
  The globe 14 is divided into two parts, a first globe body 31 and a second globe body 32, made of light diffusing glass or synthetic resin, and the globe bodies 31 and 32 are combined to be integrated. It has become.
  The first globe body 31 is formed in a substantially hemispherical shape.
  The second globe body 32 has an annular portion 33 whose one end side is combined with the first globe body 31 and a radiating fin facing portion 34 provided on the other end side of the annular portion 33.
  One end of the annular portion 33 is formed with a fitting portion 35 that is fitted to the first globe body 31 and fixed with an adhesive such as silicone resin. The other end of the annular portion 33 is radiated by the radiator 13. It is formed in a shape substantially continuous with the fin 26.
  The radiating fin facing portion 34 is formed in a flat plate shape facing the plurality of radiating fins 26 and the gaps 29 of the radiating body 13, and has light diffusibility. A hole 36 through which the board mounting portion 27 of the radiator 13 passes is formed in the center of the heat radiating fin facing portion 34, and the edge facing the hole 36 is fitted to the mounted portion 28 of the radiator 13. A mounting portion 37 that is fixed by an adhesive such as silicone resin is formed. By fixing the mounting portion 37 to the radiator 13, the inside of the globe 14 is sealed.
  The lighting circuit 15 is electrically connected to each light emitter 12 by a lead wire (not shown) and supplies a constant current to the LED 22.
  The case 16 is formed in a substantially cylindrical shape that protrudes into the heat radiator 13 and the base 17 from an insulating material such as PBT resin, and insulates the heat radiator 13 from the base 17. The lighting circuit 15 is held inside the case 16.
  The base 17 is, for example, an E17 type or an E26 type. A cylindrical shell 41 having a screw thread to be screwed into a lamp socket of a lighting fixture (not shown), and an insulating portion 42 at the top of the other end of the shell 41 are provided. And an eyelet 43 provided therethrough. The shell 41 and the eyelet 43 are electrically connected to the lighting circuit 15 by lead wires (not shown).
  Then, in the light bulb shaped lamp 11 configured in this way, when the base 17 is connected to the socket of the lighting fixture and power is supplied, the lighting circuit 15 operates to supply power to the light emitter 12, and each LED 22 emits light. To do.
  Light from each LED 22 is diffused and emitted through the globe 14.
  Among the light from each LED 22, a part of the light is directly directed to the heat radiating fin facing portion 34 of the globe 14, and is emitted around the heat radiating body 13 and toward the base 17 through the gap 29 between the plurality of heat radiating fins 26. Further, a part of the light is reflected by the inner surface of the first globe body 31 and is directly directed to the radiating fin facing portion 34 of the globe 14, and these lights are transmitted through the radiating fin facing portion 34.
  Therefore, in this light bulb shaped lamp 11, the part of the heat dissipating body 13 shines together with the globe 14, and light distribution close to that of a general lighting bulb can be obtained. Even when the light bulb shaped lamp 11 is used in, for example, a lighting fixture with a reflecting mirror, reflected light from the reflecting mirror can be obtained, and compatibility with the lighting fixture can be improved.
  Further, since the radiating fin facing portion 34 has light diffusibility, the shadow of the radiating fin 26 can be hardly projected.
  In addition, by attaching the light emitter 12 to the substrate mounting portion 27 projecting from the one end of the radiator 13 into the globe 14, the light from the LED 22 can be directed to the radiation fin facing portion 34 of the globe 14 in a large amount. Light emitted from between the heat radiation fins 26 of the body 13 can be increased.
1 is a partial cross-sectional view of a light bulb shaped lamp showing an embodiment of the present invention. It is a side view of a bulb-type lamp.
11 Bulb lamp
12 Light emitter
13 Heat sink
14 Globe
15 Lighting circuit
16 cases
17 base
25 Heat conduction part
26 Radiation fin
27 Board mounting part
28 Mounted part
34 Radiation fin facing part
37 Mounting part

Claims (3)

  1. A light emitter;
    A heat conducting unit that mounted to the heat transfer at one end the emitters of the lamp axis direction, toward the lamp axis direction end with this from the periphery of the heat-conducting portion projecting radially and extending along the lamp axis direction A plurality of radiating fins that gradually increase in the amount of protrusion in the radial direction, and the heat conducting portion and the radiating fins are made of an integrally formed metal material ;
    A glove that covers the light emitter at one end in the lamp axis direction and includes a plurality of the radiation fins and a radiation fin facing portion facing the gap between the radiation fins, and the radiation fin facing portion has a light diffusibility ;
    A thermally conductive substrate mounting portion that protrudes from the heat conducting portion toward the inner cavity of the globe and attaches the light emitter to the heat conducting portion;
    A base provided on the other end of the radiator;
    A lighting circuit for lighting a pre Symbol emitters;
    There is no region that shields the light emitted from the gap between the heat radiating fins from the heat radiating fin to the base, and is formed to protrude in the heat radiating body and the base, insulating the heat radiating body and the base, and the lighting A case for housing the circuit;
    A light bulb shaped lamp characterized by comprising:
  2. 2. The light bulb shaped lamp according to claim 1, wherein an outer diameter of one end side of the radiating fin and an outer diameter of the radiating fin facing portion are the same.
  3. The heat dissipating body is provided with a groove-shaped attached portion on the surface on one end side outside the substrate attaching portion and inside the heat dissipating fin,
    The light bulb shaped lamp according to claim 1 or 2, wherein the globe is provided with a mounting portion fixed to the mounted portion.
JP2008236558A 2008-09-16 2008-09-16 Light bulb shaped lamp Active JP5246402B2 (en)

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JP2008236558A JP5246402B2 (en) 2008-09-16 2008-09-16 Light bulb shaped lamp

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JP2013080405A Division JP5674065B2 (en) 2013-04-08 2013-04-08 Light bulb shaped lamp

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JP2010073337A JP2010073337A (en) 2010-04-02
JP2010073337A5 JP2010073337A5 (en) 2012-08-09
JP5246402B2 true JP5246402B2 (en) 2013-07-24

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JP5421137B2 (en) * 2010-01-22 2014-02-19 株式会社リード Globe-type LED lighting device
JP5662059B2 (en) * 2010-06-04 2015-01-28 パナソニックIpマネジメント株式会社 LED lamp
JP5533361B2 (en) * 2010-07-05 2014-06-25 住友ベークライト株式会社 Light source device and lighting apparatus
TWI470165B (en) * 2011-04-01 2015-01-21
CN102759026B (en) * 2011-04-28 2015-01-21 东莞勤上光电股份有限公司 Bulb and LED bulb radiating structure
KR20130023638A (en) 2011-08-29 2013-03-08 삼성전자주식회사 Bulb type semiconductor light emitting device lamp
KR101326518B1 (en) 2011-09-02 2013-11-07 엘지이노텍 주식회사 Lighting device
JP2013065488A (en) * 2011-09-20 2013-04-11 Hitachi Appliances Inc Bulb type lighting device
JP2013065489A (en) * 2011-09-20 2013-04-11 Hitachi Appliances Inc Bulb type lighting device
JP5686198B2 (en) 2011-09-22 2015-03-18 東芝ライテック株式会社 Light bulb shaped LED lamp
JP2013084347A (en) * 2011-10-06 2013-05-09 Hitachi Appliances Inc Bulb type lighting device
JP6076605B2 (en) * 2012-02-10 2017-02-08 シチズン電子株式会社 LED light emitting device
US8680755B2 (en) 2012-05-07 2014-03-25 Lg Innotek Co., Ltd. Lighting device having reflectors for indirect light emission
KR102024703B1 (en) * 2012-05-24 2019-09-24 엘지이노텍 주식회사 Lighting device
KR102024704B1 (en) * 2012-05-24 2019-09-24 엘지이노텍 주식회사 Lighting device
CN103123104B (en) * 2013-02-05 2015-11-25 东莞汉旭五金塑胶科技有限公司 The LED cooling lamp holder of all-round light projection and heat radiation module thereof
JP5612183B2 (en) * 2013-09-10 2014-10-22 アイリスオーヤマ株式会社 LED bulb

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JP2004296245A (en) * 2003-03-26 2004-10-21 Matsushita Electric Works Ltd Led lamp
JP2006244725A (en) * 2005-02-28 2006-09-14 Atex Co Ltd Led lighting system
JP4725231B2 (en) * 2005-04-08 2011-07-13 東芝ライテック株式会社 Light bulb lamp

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