JP5421137B2 - Globe-type LED lighting device - Google Patents

Description

  The present invention relates to a globe-type LED lighting device in which an LED light source body using a large number of light emitting diodes (LEDs) as light emitters is sealed in a globe.

  An LED element is an element that emits light with high brightness by being driven by a power supply. It is small, has high luminous efficiency, and has characteristics such as low power consumption and long life. It is used for. In order to improve the illumination characteristics by diffusing and uniformizing the illumination light, the illumination device generally provides mechanical protection, insulation retention, waterproofing and dustproofing to the holder member to which the light source body is attached and detached. An appropriate cover is attached. For example, Patent Document 1 describes a street lamp using an LED as a light source.

  In a lighting device or the like, a relatively large heat is also generated when the LED element emits light, so that a high internal sealing property is required by a cover like a street light using an LED as a light source described in Patent Document 1, for example. The heat rises in the cover and the temperature rises. In such an illuminating device or the like, the characteristics of the LED element change due to the internal high temperature, the light emission state becomes unstable, and various problems such as a reduction in life and damage to electronic components of the drive circuit occur.

  For this reason, in lighting devices and the like, various heat dissipation structures are provided to efficiently dissipate generated heat to the outside, thereby reducing the temperature rise. For example, Patent Document 2 discloses a hanging type illumination device in which an LED module including an LED element and a substrate is disposed together with a UV cut filter at an opening of a parabolic reflector, and the LED module includes a heat sink and a fan. A heat dissipation structure is attached to dissipate the heat trapped in the reflector. Such an illuminating device is a structure provided with a heat radiation structure that is located at the center of the radiation surface of the illumination light and is exposed to the outside, so that the use place is restricted due to a special appearance or the illumination efficiency of the center portion is reduced. There is a problem. The illuminating device cannot be applied to an application such as a street lamp that needs to radiate illumination light not only toward the ground but also upward.

  Patent Document 3 describes an illuminating device in which an LED module is arranged on the inner surface of a metal case, and heat radiation fins are integrally formed on the outer surface, and a cover lens is assembled to the case so as to seal the LED module. Has been. The illuminating device transmits heat trapped inside to the heat radiating fin through the case so that the heat is radiated. Such an illuminating device is large in size as a result of the formation of heat radiation fins on the bottom surface of the case that is to be attached to a lighting fixture or the like.

  By the way, in the LED lighting device, since a light source body is configured by mounting an LED element on a substrate, a so-called surface-emitting type that emits illumination light downward as in the above-described Patent Document 1 has been common. . Also in the LED lighting device, there is a great demand for a specification that includes a spherical globe or the like as in a conventional light bulb type lighting device and emits illumination light in a wide range from the globe toward the upper side. The LED illumination device has a high directivity of the LED element serving as the light source, and no LED illumination device having an orientation distribution satisfying such requirements is provided.

JP 2009-16180 A JP 2006-59625 A JP 2009-224291 A

  The present invention maintains a waterproof property by enclosing an LED light source body in a glove and efficiently dissipates heat generated from the LED to reduce characteristic deterioration due to high temperature and obtain a good light distribution. An object of the present invention is to provide a globe-type LED lighting device capable of achieving the above.

  The globe-type LED lighting device according to the present invention that achieves the above-described object includes a holder member and a stem member integrally formed of a heat conductive material, a plurality of LED light source bodies, and a hollow body that seals the stem member. With gloves. In the globe-type LED lighting device, a holder member is formed with a through-wire / heat conduction space portion penetrating in the length direction, and a portion surrounding the opening of the through-wire / heat conduction space portion is used as a light source body attachment portion. The holder body part in which the heat radiating part is formed on the upper outer peripheral part of the light source body mounting part, and the instrument mounting part in which the through-line space part penetrating in the length direction communicating with the through-wire / thermal conduction space part is formed. And a glove mounting portion that protrudes from the outer peripheral portion of the light source body mounting portion of the holder main body portion to form a glove mounting portion. In the globe-type LED lighting device, the stem member performs an insulating film treatment on the outer peripheral surface, and the LED mounting portion formed in a predetermined length with the planar region of the outer peripheral surface serving as the LED mounting region, and the LED mounting portion A heat-conducting material having a mounting flange portion formed on one side of the holder member and attached to and detached from the holder main body portion of the holder member, and a heat radiation space formed to open to the mounting flange portion side inside the LED mounting portion Are integrally formed. In the globe-type LED lighting device, the LED light source body includes an LED element and a substrate on which one to a plurality of LED elements are mounted, and is mounted on the LED mounting region of the stem member. The globe-type LED lighting device is composed of a hollow body having a space portion in which an opening portion is formed with an attachment portion facing the globe attachment portion of the holder member at the opening portion, and the attachment portion is attached to the globe attachment portion with respect to the holder member The stem member is sealed by positioning the tip of the LED mounting portion slightly above the center of the space.

  In the globe-type LED lighting device according to the present invention, the stem member on which the LED light source body is mounted attaches the attachment flange portion to the opposing light source body attachment portion of the holder main body portion with respect to the holder member. In the globe-type LED lighting device, the globe is attached to the globe attachment portion opposite to the globe attachment portion with respect to the holder member. In the globe-type LED lighting device, the space portion of the globe forms a sealed space portion, and the stem member is sealed therein. In the globe-type LED lighting device, the holder member attaches the globe so that the opening is covered by the globe attachment portion, so that water and dust are prevented from entering the space portion of the globe, thus maintaining waterproofness and sealing performance. To be.

  In the globe-type LED lighting device, the LED element is driven to emit light when power is supplied from the power supply line that passes through the through space formed in the fixture mounting portion of the holder member with respect to the LED light source body. It is diffused in the globe and emits illumination light to the outside. In the globe-type LED lighting device, the space part of the globe in which the stem member is sealed constitutes a sealed space part, so that the heat generated from the LED element rises in the interior and lowers the light emission characteristics of the LED element. . In the globe-type LED lighting device, the heat generated from the LED element is communicated with the heat-dissipating space portion and the wire / heat conducting space portion, and part of the stem member is mounted on the holder member from the mounting portion via the LED mounting portion. By being transmitted to the light source body attaching portion, heat is efficiently radiated from the heat radiating portion formed on the upper outer peripheral portion of the light source body attaching portion of the holder member. In the globe-type LED lighting device, a high temperature in the globe is thereby suppressed, and stable and good illumination is performed.

  In the globe-type LED lighting device, in the state where the globe is attached to the holder member and the stem member is sealed in the space portion, the tip end portion of the LED mounting portion of the stem member is positioned slightly above the center of the space portion. In the globe-type LED lighting device, the illumination light emitted from the LED light source body having the LED element with high directivity is radiated from the entire globe toward the upper side as well as the outer periphery and the lower side. A good light distribution.

  According to the globe-type LED lighting device according to the present invention configured as described above, the LED light source body is three-dimensionally arranged on the LED mounting portion on the outer peripheral surface with respect to the holder member in which a large number of heat dissipating portions are formed on the upper outer peripheral portion. By mounting and detaching the stem member to be mounted and mounted, and sealing the stem member with a glove attached to the glove mounting portion of the holder member with the tip portion of the LED mounting portion positioned slightly above the center of the space portion, Waterproof and dustproof properties are securely maintained. According to the globe-type LED lighting device, an LED light source body having a highly directional LED element is used, and illumination light emitted from the LED light source body is radiated in a wide range from the entire globe toward all directions, and thus has a good distribution. A globe-type lighting device that obtains light distribution is realized. According to the globe-type LED lighting device, the stem member is attached to the holder member so as to constitute a heat conduction structure that directly transmits heat generated from the LED element. According to the globe-type LED lighting device, heat generated from the LED element is transmitted from the mounting portion to the light source body mounting portion of the holder member via the LED mounting portion of the stem member, and formed on the outer peripheral portion of the light source body mounting portion. By efficiently dissipating heat from the heat dissipating part, it is possible to suppress the high temperature in the globe and reduce the occurrence of the light emitting characteristics of the LED elements and the characteristics of the drive circuit, and the like, and stable and good illumination can be performed.

It is a perspective view of the illuminating device shown as embodiment of the globe type LED illuminating device which concerns on this invention. It is a front view shown in the state where a glove of an illuminating device was removed. It is a perspective view shown in the state where a glove of an illuminating device was removed. It is a half sectional view of the holder member with which an illuminating device is equipped. It is a top view of the globe member with which an illuminating device is equipped. It is sectional drawing of a globe member. It is explanatory drawing of the thermal radiation characteristic in an illuminating device, The figure (A) is explanatory drawing of a heat conduction path | route, The figure (B) is a time-dependent change characteristic figure of each site | part temperature. It is explanatory drawing of the thermal radiation characteristic in the conventional illuminating device, The figure (A) is explanatory drawing of a heat conduction path | route, The figure (B) is a time-dependent change characteristic figure of each site | part temperature. It is a characteristic view of the light distribution in an illuminating device. It is explanatory drawing of the light distribution in the conventional LED illuminating device, The figure (A) is a front view, The figure (B) is the characteristic view of the light distribution. It is explanatory drawing of the light distribution in a mercury lamp illumination device, The figure (A) is a front view, The figure (B) is the characteristic view of the light distribution.

  Hereinafter, the illumination device 1 shown in the drawings will be described in detail as an embodiment of the globe-type LED illumination device according to the present invention. The illuminating device 1 is a globe-type LED illuminating device suitably used as an outdoor illuminating device such as a street lamp or a gatepost lamp. As shown in FIGS. 1 and 2, the illumination device 1 includes a holder member 2, a stem member 3, a plurality of LED light source bodies 4 including LED elements 5 and a substrate 6, a bulb 7, and a globe 8. Prepare.

  In the lighting device 1, the holder member 2 is fixed to an attachment portion on the side of an appliance such as a street lamp although details are omitted. The illuminating device 1 is configured such that a stem member 3 in which an LED light source body 4 is mounted on a holder member 2 and a bulb 7 is combined is detachable, and a globe 5 is attached to the holder member 2 in a state where the stem member 3 is sealed. To be able to. The lighting device 1 is turned on and off to supply power to the LED light source body 4 by manual switch operation on the appliance side or automatic switch operation by external brightness and time setting.

  The holder member 2 is made of a die cast member made of, for example, an aluminum material or an aluminum alloy material, which has good thermal conductivity and has weather resistance, corrosion resistance, or mechanical rigidity. As shown in FIGS. 3 and 4, the holder member 2 is formed by integrally forming a holder main body part 9, an instrument attachment part 10, and a globe attachment part 11.

  As shown in FIG. 4, the holder main body portion 9 includes a wire / heat conduction space portion 12, a large number of heat radiation fins 13, and a light source body attachment portion 14. The holder main body portion 9 is formed in a cylindrical shape having a truncated cone shape, that is, a bell shape, gradually increasing in diameter from the upper portion toward the lower portion. The through-wire / heat conduction space 12 includes a shaft hole portion that penetrates the inside of the holder main body portion 9 in the length direction and has a slightly smaller diameter in the upper portion on the small diameter side. As will be described later, the power line / heat conduction space 12 is inserted into a power supply line 15 connected to a power supply unit on the side of an appliance such as a street light and led to the stem member 3 to supply power to the LED light source body 4. To be done. The through-wire / heat-conducting space 12 conducts heat conducted from the stem member 3 side so as to spread from the inside to the outer circumference over the entire area in the length direction and the entire circumference. To ensure proper heat dissipation.

  The radiating fins 13 are arranged on the outer peripheral portion of the holder main body portion 9 in the circumferential direction, and each is constituted by a thin wall portion in the length direction. A large number of the radiating fins 13 are formed on the outer peripheral portion of the holder main body portion 9 to increase the surface area so that heat conducted from the stem member 3 side is efficiently radiated. Due to the shape and arrangement structure described above, the radiating fins 13 can be easily punched when the holder member 2 is molded, simplifying the mold structure, improving the flow of rainwater, etc., and reducing the adhesion of dust and the like. . The heat radiating fins 13 improve the mechanical strength of the holder main body portion 9 and improve the design appearance on the outer peripheral portion. Of course, the radiating fin 13 is not limited to the structure formed with the shape and arrangement described above with respect to the holder main body portion 9. The heat radiating fins 13 are formed on the outer peripheral portion of the holder main body portion 9 so as to be positioned above the stem member 3 to be attached as will be described later.

  The light source body mounting portion 14 is configured by a slightly large stepped recess formed on the inner surface (bottom surface) of the holder main body portion 9 on the large diameter side so as to surround the opening of the through-wire / heat conduction space portion 12. . The light source body mounting portion 14 is formed with a plurality of screw holes for fixing the stem member 3 with mounting screws as will be described later. Of course, the light source body mounting portion 14 is not limited to the configuration of the stepped recess and the screw hole described above, and may be any appropriate structure that allows the stem member 3 described later to be attached and detached as necessary. The light source body mounting portion 14 may have a structure in which, for example, an inner peripheral screw is formed on the inner peripheral wall of the stepped recess and the stem member 3 is screwed and fixed, and a structure in which a receiving metal fitting functioning as a terminal member is combined. Also good.

  The instrument mounting part 10 is integrally formed on the small diameter side of the holder main body part 9 described above. The fixture attachment part 10 is a part where the holder member 2 is attached to and detached from the attachment part of the street light. The holder attachment part 10 has a diameter smaller than that of the holder main body part 9 and is internally connected to the wiring / heat conduction space 12 of the holder main body part 9. It consists of the cylindrical part in which the communication line space part 16 which penetrates in the length direction and was connected was formed. In the appliance mounting part 10, the through-line space part 16 is inserted into the through-wire / heat conduction space part 12 of the holder main body part 9 by inserting the power supply line 15 drawn from the attaching part on the street lamp side. Although not described in detail, the fixture mounting portion 10 is provided with an appropriate lock portion 17 on the outer peripheral portion, and is held by being inserted into the mounting portion on the street light side, for example.

  In addition, you may make it the appliance attachment site | part 10 attach or detach with respect to the attaching part by the side of a street lamp, for example with a screwing structure. The appliance attachment part 10 is not limited to a cylindrical part, and is formed in an appropriate structure according to the structure of the attachment part on the street lamp side. The lighting device 1 uses the LED element 5 as a light source, so that so-called ball breakage hardly occurs, and the structure for attaching to and detaching from the attachment portion on the street lamp side is not so important.

  As shown in FIGS. 3 and 4, the globe attachment part 11 is an annular wall that is erected on the outer peripheral part of the light source body attachment part of the holder body part 9 described above along the main surface part 18 having a large diameter and the outer peripheral edge thereof. It consists of the site | part formed in the downward basin shape which consists of the part 19. FIG. A plurality of studs 20 with holes penetrating the main surface portion 18 constituting the mounting portion for attaching the globe 8 to the main surface portion 18 are formed in the glove mounting portion 11 and a large number of ribs 21 connected to the annular wall portion 19 are provided. Is formed. The globe attachment part 11 fixes the globe 8 by screwing the attachment screw 34 from the stud 20 with a hole.

  The globe attachment part 11 has an annular wall portion 19 formed with a slightly larger diameter than an opening part of the globe 8 described later, and a packing (not shown) is attached to the inner peripheral wall over the entire circumference. The glove attachment part 11 maintains the airtightness of the space part 33 by covering the periphery of the opening part with the annular wall part 19 and the packing attached with the glove 8 as will be described later. Prevent entry of dust and the like. Thereby, the glove attachment part 11 is kept waterproof and hermetic.

  The globe attachment part 11 may be configured to attach a ring-shaped receiving metal fitting having an engagement part inside the annular wall part 19 through a stud 20 with a hole, for example. The glove attachment part 11 can also be fixed by attaching the glove 8 by inserting the glove 8 into this metal fitting and rotating it by a predetermined angle. In addition, of course, the globe attachment part 11 is not limited to the structure mentioned above, You may comprise by the various globe attachment structure with which the conventional globe type illuminating device is equipped. Needless to say, the globe mounting portion 11 is configured to cover the opening portion of the globe 8 with the main surface portion 18 and the annular wall portion 19 regardless of the structure.

  The stem member 3 is also made of a die cast member made of, for example, an aluminum material or an aluminum alloy material, which has good thermal conductivity and has weather resistance, corrosion resistance, or mechanical rigidity. As shown in FIGS. 3, 5, and 6, the stem member 3 includes an LED mounting part 22, a mounting flange part 23 that is integrally formed on one side of the LED mounting part 22, and an LED mounting part 22. The heat radiation space portion 24 is formed. The stem member 3 mounts a large number of LED light source bodies 4 on the outer peripheral surface of the LED mounting portion 22, and is attached to and detached from the globe mounting portion 11 of the holder member 2 described above via the mounting flange portion 23.

  The LED mounting portion 22 is formed of a bottomed polygonal cylindrical body having an insulating film treatment on the outer peripheral surface and having a predetermined length. The LED mounting portion 22 includes a large cylindrical portion 25 on the mounting flange portion 23 side, an intermediate cylindrical portion 26 that is connected to the large cylindrical portion 25 and gradually decreases in diameter toward the distal end, and is connected to the intermediate cylindrical portion 26. Further, a stepped cylindrical body comprising an outer peripheral LED mounting cylinder portion 27 that gradually becomes smaller in diameter toward the distal end side, and a bottom LED mounting portion 28 that closes the heat dissipation space 24 at the distal end portion of the LED mounting cylinder portion 27. Formed. The LED mounting portion 22 is formed with a bush fitting hole 30 that draws the power supply line 15 to the outer peripheral side by fitting a through wire bush 29 to the outer peripheral portion of the large cylinder portion 25. The through-wire bush 29 protects the power supply line 15 from the bush fitting hole 30 and is also waterproof.

  In the LED mounting portion 22, the outer peripheral LED mounting cylinder portion 27 mounts the LED light source body 4 on each of the flat side surfaces to constitute an LED mounting area. As shown in FIG. 6, the outer peripheral LED mounting cylinder portion 27 is inclined so that each side surface is inclined with an inclination angle θ of 40 ° to 75 ° toward the bottom LED mounting portion 28 side. The outer peripheral LED mounting cylinder portion 27 is thereby formed into a multi-faceted frustum shape, and the LED light source body 4 is mounted on each side face in a downwardly lowered state.

  The LED mounting portion 22 has a bottom LED mounting portion 28 formed on a flat surface and mounts the LED light source body 4. The LED mounting part 22 is an intermediate between the power supply line 15 drawn out to the outer peripheral part of the large cylinder part 25 through the bush fitting hole 30 and the LED light source bodies 4 mounted on the outer LED mounting cylinder part 27 and the bottom LED mounting part 28. Each connection is made by a connection line led through the outer surface of the cylindrical portion 26. For example, as described above, the LED mounting portion 22 is configured by a wiring pattern formed by holding insulation on the outer peripheral surface subjected to the insulating film treatment as described above.

  Of course, the LED mounting portion 22 is not limited to the above-described configuration. For example, the LED mounting portion 22 may be formed in a polyhedral frustum shape having a predetermined length and an inclined surface that continues downward. . The LED mounting part 22 is configured to draw the power supply line 15 from the large cylindrical part 25 to the outer peripheral side. For example, the power supply line 15 is branched in the heat radiation space part 24 and drawn from an appropriate part to the outer peripheral side. You may make it connect with each LED light source body 4. FIG.

  In the stem member 3, the mounting flange portion 23 is integrally formed on the outer periphery of the upper end of the LED mounting portion 22 described above. The mounting flange portion 23 is formed in a disk shape having an outer shape substantially equal to the concave shape of the light source body mounting portion 14 of the holder member 2 described above, and has a plurality of mounting holes into which mounting screws for fixing to the light source body mounting portion 14 are screwed. Is formed. The mounting flange portion 23 is fitted into the light source body mounting portion 14 in a state where the power supply line 15 is drawn into the heat radiating space portion 24, the mounting holes and screw holes are aligned with each other, the mounting screws are screwed in, and the light source The stem member 3 is attached to the holder member 2 by being fixed in the body attaching portion 14.

  Of course, the lighting device 1 is not limited to the structure in which the stem member 3 is attached to the holder member 2 by the light source body attachment portion 14 and the attachment flange portion 23 described above. In the illuminating device 1, for example, the light source body mounting portion 14 is formed of a cylindrical metal fitting having an inner peripheral screw, and the mounting flange portion 23 side has an outer peripheral screw, and the stem member 3 is attached to the holder member 2 by a screwed structure. You may do it. The illuminating device 1 attaches the stem member 3 to the holder member 2 with an appropriate detachable structure.

  The stem member 3 is a shaft in which the heat radiation space 24 is connected to the inside of the LED mounting portion 22 with the wire / heat conduction space 12 of the holder member 2 described above, and the bottom is closed by the bottom LED mounting portion 28. Configured as a directional space. As shown in FIGS. 5 and 6, the heat radiation space 24 is configured as a space that penetrates the inside of the corresponding portion of the large tube portion 25 and the intermediate tube portion 26, leaving the outer peripheral wall. The part is divided into a plurality of individual heat radiation spaces 32 by a plurality of radial rib walls 31 that integrate the core part and the inner wall of the outer peripheral surface. With this configuration, the heat dissipation space 24 radiates heat generated from the LED light source body 4 mounted on the outer LED mounting cylinder 27 into the individual heat dissipation space 32, thereby increasing the temperature of the outer LED mounting cylinder 27. And to improve the heat radiation efficiency.

  The stem member 3 is preferably formed, for example, so that the radial rib wall 31 corresponds to each flat surface portion on which the LED light source body 4 of the outer peripheral LED mounting cylinder portion 27 is mounted. Since the outer peripheral wall which comprises the outer periphery LED mounting cylinder part 27 becomes high temperature by the heat which generate | occur | produces in the mounting position of the LED light source body 4, the stem member 3 is heat-radiated into the separate thermal radiation space part 32 via the radial rib wall 31. Is done efficiently. The stem member 3 is formed to have a large surface area by, for example, forming a large number of projections and depressions side by side in the axial direction on the side surface of the radial rib wall 31, thereby improving the heat dissipation efficiency.

  In the stem member 3, the LED light source bodies 4 are mounted on the outer peripheral LED mounting cylinder portion 27 and the bottom LED mounting portion 28, respectively. As described above, the LED light source body 4 includes one to a plurality of LED elements 5 and a substrate 6 on which the LED elements 5 are mounted. As shown in FIG. 3, one or a plurality of LED light source bodies 4 are mounted in the vertical direction on each outer surface formed by a plane of the outer peripheral LED mounting cylinder portion 27, and on the bottom LED mounting portion 28. Is also implemented. As described above, the LED light source body 4 is connected to the power supply line 15 via the wiring pattern formed on the outer peripheral surface of the stem member 3.

  When the LED light source body 4 is supplied with power from the power supply line 15, the LED element 5 is driven to emit light. In the LED light source body 4, the combination of LED elements of each color and the number of the LED light source bodies 4 mounted on the stem member 3 are set according to the illumination color light and illuminance specifications of the illumination device 1.

  As shown in FIG. 2, the LED light source body 4 is sealed by a bulb 7 that is assembled to the glove attachment portion 11 of the holder member 2. The valve 7 is formed into a slender cap shape by using, for example, a transparent acrylic resin or an appropriate synthetic resin material, and the opening is attached to the globe attachment part 11. The bulb 7 protects the LED light source body 4 mounted on the outer peripheral surface of the stem member 3 in the same manner as a general light bulb. In addition, the bulb | ball 7 acts so that the emitted light from the LED light source body 4 may become soft illumination light, for example, by giving appropriate coloring, and it may not be directly visually recognized from the outside. In addition, since the illumination device 1 uses the LED element 5 as a light source, almost no maintenance is required, and since the installation is performed in a state where the holder body 2 and the stem member 4 are integrated, a bulb 7 is particularly provided. Of course, it is not limited to a thing.

  As described above, the globe 8 is attached to and detached from the holder member 2 in a state where the stem member 3 on which the LED light source body 4 is mounted is attached so as to seal the stem member 3. The globe 8 is made of, for example, milky white, appropriate colored glass, or a heat-resistant synthetic resin material, and diffuses the emitted light from the LED light source body 4 and emits it as soft illumination light. As shown in FIG. 2, the globe 8 has an outer diameter larger than that of the globe attachment portion 11 of the holder member 2, and an opening portion having a diameter slightly smaller than the inner diameter of the annular wall portion 19 is formed in a part thereof. It consists of a spherical hollow body having a space 33 inside.

  Although not described in detail, the globe 8 is provided with an annular fitting wall that is fitted to the inner peripheral surface of the annular wall portion 19 formed in the globe attachment portion 11 of the holder member 2 at the opening edge of the opening portion. A plurality of mounting portions with holes are integrally formed at positions corresponding to the studs 20 with holes. The globe 8 is assembled by fitting the annular fitting wall into the annular wall portion 19 and aligning the mounting portion with the opposing stud 20. The globe 8 is fixed by being screwed into the mounting portion by a set screw 34 fitted into the stud 20 with a hole from the holder body portion 9 side, and is attached to the globe mounting portion 11 of the holder member 2. The globe 8 is sealed around the opening by the annular wall portion 19 and packing, so that rainwater, dust and the like can be prevented from entering the inside.

  As described above, the globe 8 is attached to the globe attachment portion 11 of the holder member 2 to seal the stem member 3 attached to the holder main body portion 9 of the holder member 2 in the space 33. In this state, as shown in FIG. 2, the globe 8 is slightly above the tip portion of the LED mounting portion 22 of the stem member 3, that is, the bottom LED mounting portion 28 with a distance ΔH from the center O of the space portion 33. Position. Accordingly, the globe 8 emits light emitted from the LED light source body 4 having the LED element 5 having high directivity even upward, and obtains a good light distribution that illuminates a wide range from the whole.

  Of course, the globe 8 is not limited to the spherical hollow body described above, and may be hollow bodies of various shapes having an internal space. As for the globe 8, it is possible to interchangeably use the globe and the holder member of the conventional globe-type lighting device together with the holder member 2.

  The lighting device 1 configured as described above is used as an outdoor lighting device such as a street lamp or a gate lamp as described above. In the lighting device 1, the LED light source body 4 is mounted on the outer peripheral surface of the LED mounting portion 22 with respect to the stem member 3. In the illuminating device 1, the stem member 3 is attached to the light source body attachment portion 14 of the holder main body portion 9 with the attachment flange portion 23 relative to the holder member 2. In the illuminating device 1, the globe 8 seals the stem member 3 in the space 33 by attaching the attachment portion to the globe attachment portion of the globe attachment portion 11 with respect to the holder member 2. In the illuminating device 1, in a state where the globe 8 is attached to the holder member 2, the opening portion is sealed with the annular wall portion 19 or packing of the globe attachment portion 11, and the waterproofness and sealing property of the space portion 33 are maintained. .

  In the lighting device 1, the power supply line 15 drawn out from the fixture mounting portion 10 of the holder member 2 is connected to a power supply portion on the fixture side such as a street lamp, and the fixture mounting portion 10 is attached to the fixture-side mounting portion. In the lighting device 1, a manual or automatic switch operation is performed on the appliance side, and power is supplied from the power supply line 15 to the LED element 5 of the LED light source body 4. In the illumination device 1, the LED element 5 is driven by power supply, and illumination light of a predetermined color is emitted. In the illumination device 1, illumination is performed by diffusing the emitted light from the LED element 5 by the bulb 7 or the globe 8 and radiating it outward.

  In the illuminating device 1, the stem member 3 is attached to the light source body attachment portion 14 by attaching the attachment flange portion 23 to the holder member 2 so that the wire / heat conduction space portion 12 and the heat dissipation space portion 24 communicate with each other. An integral heat conduction path is formed between the member 2 and the stem member 3. In the illuminating device 1, the heat generated from the LED element 5 due to light emission is efficiently dissipated by the heat dissipating structure as shown in FIG. 7A, so that it is trapped in the bulb 7 or the globe 8 in a sealed atmosphere. The temperature is not increased so that the light emission characteristics of the LED element 5 are not deteriorated.

  In the illuminating device 1, the stem member 3 radiates heat from the LED light source body 4 to the internal heat radiating space portion 24, and passes through the heat radiating space portion 24 to the wire / heat conducting space portion 12 of the holder member 2. Radiation conduction takes place. Moreover, in the illuminating device 1, the heat generated from the LED element 5 is connected to the light source body mounting portion 14 on the holder member 2 side from the mounting flange portion 23 via the LED mounting portion 22 of the stem member 3 as indicated by the arrows in the figure. Is transmitted to.

  In the illuminating device 1, the holder member 2 forms a large number of heat radiation fins 13 on the outer peripheral portion of the light source body mounting portion 14 as described above, so that heat is radiated to the outside air through the heat radiation fins 13. Like that. In the illuminating device 1, the temperature Tc in the space portion 33 of the globe 8, the temperature Tj of the LED light source body 4, and the temperature Tbu of the stem member 3 are thereby suppressed to maintain stable light emission characteristics of the LED element 5. In addition, the thermal damage of the circuit elements mounted on the substrate 6 is prevented.

  In the illuminating device 1, as shown in FIG. 7B, a large amount of heat is generated from the LED light source body 4 due to long-term use. A large temperature difference does not occur with respect to Ta, and high temperature is suppressed and stable and good illumination is performed. In the illuminating device 1, as the LED element 5 emits light, the temperature Tj of the LED light source body 4 rapidly rises as shown in the figure, and thereby the temperature Tbu of the stem member 3 and the space portion 33 of the globe 8. The temperature Tc gradually increases. In the illuminating device 1, by providing the heat dissipation structure described above, the temperature rise of the temperature Tj of the LED light source body 4, the temperature Tbu of the stem member 3, and the temperature Tc in the space 33 of the globe 8 can be used for a long time. Regardless, it is suppressed to some extent. In the illuminating device 1, thereby, the LED light source body 4 and the stem member 3 together with the space portion 33 of the globe 8 are suppressed from being heated at high temperatures, and stable and satisfactory illumination is performed.

  The illuminating device 40 shown as a comparative example in FIG. 8 is an LED illuminating device having a conventional socket-type attaching / detaching structure. In the conventional lighting device 40, a stem member 42 on which the LED light source body 4 is mounted on a holder main body 41 is attached via a so-called socket fitting 43 that omits details. The conventional lighting device 40 has a structure in which the holder main body 41 and the stem member 42 are separated from each other through the socket metal fitting 43 in the middle.

  Therefore, in the conventional lighting device 40, since an efficient heat dissipation structure is not configured between the stem member 42 and the holder main body 41, the heat generated from the LED light source body 4 as shown in FIG. Is radiated into the space 33 of the globe 8 and causes convection in the space 33 as indicated by arrows. In the conventional lighting device 40, the generated heat is thereby raised in the space portion 33 of the globe 8 to increase the temperature.

  In the conventional illuminating device 40, as shown in FIG. 8B, as the LED element 5 emits light, the temperature Tj of the LED light source body 4 rapidly increases as shown in FIG. The temperature Tbu of 42 and the temperature Tc in the space 33 of the globe 8 also gradually increase. In the illuminating device 40, since an efficient heat dissipation structure is not configured, the temperature Tj of the LED light source body 4, the temperature Tbu of the stem member 42, and the temperature Tc in the space portion 33 of the globe 8 over time. The temperature rise gradually increases, and the light emission characteristics of the LED element 5 deteriorate.

  In the illuminating device 1, as described above, the stem member 3 forms the LED mounting portion 22 in a bottomed polygonal cylindrical body and has an inclination angle θ of 40 ° to 75 ° downward. The LED light source body 4 is mounted on each of the plurality of outer peripheral LED mounting cylinder portions 27 and the bottom LED mounting portion 28 formed of inclined planes. Further, in the lighting device 1, the LED of the stem member 3 is slightly above the center O of the space portion 33 in a state where the globe 8 is attached to the holder member 2 and the stem member 3 is sealed in the space portion 33 as described above. The bottom LED mounting portion 28 that constitutes the tip portion of the mounting portion 22 is located.

  The lighting device 1 has a structure in which a large number of LED light source bodies 4 are arranged and mounted three-dimensionally in the space 33 of the globe 8 via the stem member 3. In the illumination device 1, illumination light is emitted mainly from the LED light source body 4 mounted on the plurality of outer peripheral LED mounting cylinder portions 27 to the side, and the LED light source body 4 mounted on the bottom LED mounting portion 28. Illumination light is emitted mainly from the bottom downward. In the illuminating device 1, the illumination light emitted from the LED element 5 having high directivity is radiated in all directions in the space portion 33 of the globe 8 by the arrangement of the LED light source body 4 described above. In the illuminating device 1, as shown in FIG. 9, the illumination light is radiated toward the upper side as well as the side surface direction, thereby obtaining a good light distribution that illuminates a wide range.

  An illumination device 50 shown as a comparative example in FIG. 10 is an LED illumination device including a planar LED light source body 52 in which a large number of LED elements are mounted on a substrate with respect to a holder member 51. In the illumination device 50, for example, a large number of LED elements are arranged in a radial pattern on a substrate and mounted, and the substrate is directly attached to the attachment portion of the holder member 51. The illumination device 50 has a structure in which the LED light source body 52 is disposed at an upper position in the space 33 of the globe 8 as shown in FIG. Therefore, in the illuminating device 50, the illumination light emitted from the LED element 5 having high directivity is mainly emitted downward in the space 33 of the globe 8 as shown in FIG. In addition, the illumination area becomes narrow, and this is not suitable when applied to a street lamp that illuminates the surrounding area by radiating illumination light upward.

  A lighting device 60 shown as a comparative example in FIG. 11 is a mercury lamp lighting device generally used as a conventional street lamp in which a mercury lamp 63 is attached to a holder member 61 via a socket structure 62. In the illuminating device 60, the mercury lamp 63 is accommodated in the space 33 of the globe 8 with its tip positioned substantially at the center, as shown in FIG. Therefore, in the illuminating device 60, the illumination light emitted from the mercury lamp 63 is diffused in the space 33 of the globe 8 and is widely radiated upward as shown in FIG. Thus, the illumination device 60 gives a sense of security that, for example, a pedestrian can check the installation position from a distance even at night.

  The illumination device 60 has good illumination light diffusion characteristics as described above. In the illumination device 60, the mercury lamp 63 is used as a light source, so that maintenance work such as replacement of a broken bulb is required, and the power consumption is large.

  The lighting device 1 includes the LED light source body 4 including the LED element 5 having characteristics such as small size, good light emission efficiency, low power consumption, long life, and the like. Solves problems such as high temperature due to heat generation and lighting range due to directivity. The lighting device 1 is superior to the lighting devices 40, 50, and 60 of the comparative examples described above, and constitutes a street light that can be used interchangeably with a column, a holder member, or a glove. In the illuminating device 1, although the LED element 5 having a large directivity is used as a light source, an orientation distribution equivalent to that of the illuminating device 60 using the mercury lamp 63 as a light source can be obtained, which is very suitable for application to a street lamp. is there.

  The present invention is not limited to the mold 1 shown as the above-described embodiment, and various changes and substitutions can be made to the configuration requirements without departing from the scope of the claims and the gist thereof. Of course.

  DESCRIPTION OF SYMBOLS 1 Illuminating device, 2 Holder member, 3 Stem member, 4 LED light source body, 5 LED element, 6 Board | substrate, 7 Bulb, 8 Globe, 9 Holder main body part, 10 Instrument attachment part, 11 Globe attachment part, 12 Wire and heat Conduction space part, 13 Radiation fin (heat radiation part), 14 Light source body attachment part, 15 Power supply line, 16 Through-line space part, 19 Ring wall part, 20 Stud with hole, 22 LED mounting part, 23 Mounting flange part, 24 Radiation space part, 25 Large cylinder part, 26 Intermediate cylinder part, 27 Outer peripheral LED mounting cylinder part, 28 Bottom LED mounting part, 31 Rib wall, 32 Individual heat dissipation space part, 33 Space part

Claims (4)

A portion of the wire / heat conduction space penetrating in the length direction is formed inside, and a portion surrounding the opening of the wire / heat conduction space portion is used as a light source body attachment portion and an upper outer peripheral portion of the light source body attachment portion A holder body part in which a heat radiating part is formed, an instrument mounting part in which a through space part penetrating in the length direction communicating with the above-mentioned line and heat conduction space part is formed, and the above holder body part A holder member integrally formed of a thermally conductive material having a glove attachment portion that is formed to protrude from the light source body attachment portion and forms a globe attachment portion;
An LED mounting portion formed in a predetermined length with the planar region of the outer peripheral surface as an LED mounting region, and a mounting flange portion formed on one side of the LED mounting portion and attached to and detached from the holder body portion of the holder member A stem member integrally formed of a thermally conductive material having a heat radiation space formed to open to the mounting flange portion side inside the LED mounting portion;
A light emitting diode (LED) element and a substrate on which one to a plurality of LED elements are mounted, and a plurality of LED light source bodies mounted on the LED mounting region of the stem member;
It consists of a hollow body having a space part in which an attachment part is formed opposite to the globe attachment part of the holder member at the opening part, and the attachment part is attached to the globe attachment part and attached to the holder member. A glove that forms a sealed space and has the tip of the LED mounting portion positioned above the center and seals the stem member;
The LED light source body is formed by integrating the stem member with the holder member, attaching the mounting flange portion to the light source body mounting portion, and connecting the wire / heat conduction space portion and the heat radiation space portion. A globe-type LED lighting device in which heat generated from the LED is transmitted from the stem member to the holder member and radiated by the heat radiating portion.   The globe-type LED lighting device according to claim 1, wherein the heat radiating portion formed on the holder member includes a plurality of heat radiating fins.   The stem member includes a plurality of individual heat radiating spaces divided by a plurality of radial rib walls integrating the core portion and the inner wall of the outer peripheral surface at a portion corresponding to the LED mounting region. The globe-type LED lighting device according to claim 1 or claim 2 configured.   The said stem member consists of a bottomed cylindrical part of the polyhedral frustum shape in which the said LED mounting site | part attached | subjected the inclination angle of 40 degrees-75 degrees to the side surface. Globe-type LED lighting device.

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