WO2015019754A1

WO2015019754A1 - Lamp, loosening prevention member, and lighting device

Info

Publication number: WO2015019754A1
Application number: PCT/JP2014/067623
Authority: WO
Inventors: 正義三浦
Original assignee: 岩崎電気株式会社
Priority date: 2013-08-09
Filing date: 2014-07-02
Publication date: 2015-02-12
Also published as: JP2015057760A; JP5679081B1

Abstract

A lamp is configured so that the engagement of the lamp with a socket does not loosen. An LED lamp (200) comprises a base (3) provided to a cylindrical section (230), and the base (3) is engaged with a socket (290). The LED lamp (200) comprises a ring-shaped loosening prevention member (260) provided to the outer periphery of the cylindrical section (230). The loosening prevention member (260) has a (socket-side) contact surface (297) coming into contact with the front end peripheral edge section (292A) of the connection opening (292) of the socket (290). The contact surface (297) is provided with a joining wall section (303) for preventing the rotation of the LED lamp (200).

Description

Lamp, slack prevention member, and lighting fixture

The present invention relates to a lamp, a locking member, and a luminaire.

Conventionally, a lamp is screwed into a socket and provided in a state where a packing is compressed between the lamp and the socket (see, for example, Patent Document 1).

Utility model registration 3156168 gazette

However, in the above-mentioned conventional lamp, since the flat packing is only compressed between the lamp and the socket, the looseness of the fastening of the lamp to the socket can not be sufficiently prevented.
The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to prevent loosening of fastening of a lamp to a socket.

In order to achieve the above object, the present invention is a lamp provided with a base provided in a cylindrical portion, the base being screwed into a socket, and a ring-shaped loosening preventing member provided on the outer periphery of the cylindrical portion. And the anti-loosening member includes anti-rotation means engaged with the edge of the opening of the socket to prevent the lamp from rotating.

The present invention is characterized in that, in the above-mentioned lamp, the rotation preventing means includes a convex portion which protrudes around the cylindrical portion and engages with the edge.

Further, according to the present invention, in the lamp, the convex portion of the rotation preventing means abuts on a tip of the edge or enters the edge along with screwing of the lamp and deforms between the edge and the edge. And prevent rotation.

The present invention is characterized in that, in the above-mentioned lamp, the rotation preventing means is a plate-like convex portion radially arranged around the cylindrical portion.

Further, the present invention is characterized in that, in the above-mentioned lamp, the convex portion extends to the base.

Further, according to the present invention, in the lamp, the cylindrical portion includes an enlarged diameter portion which protrudes in the radial direction, and the loosening preventing member is compressed between the enlarged diameter portion and the edge portion to prevent the loosening. The member is characterized by including an engaging portion which engages with the enlarged diameter portion to restrict the rotation of the loosening preventing member.

Further, the present invention is provided with a rotation preventing means provided on a capped lamp, which abuts on an edge of an opening of a container containing a receiver to which the cap is fastened to prevent rotation of the capped lamp. Provided is a locking member characterized by the features.

Further, according to the present invention, in a luminaire in which a holder attached to a ceiling is provided with a shade, a socket is housed in the holder, and a base of a lamp is screwed into the socket, a plurality of openings are provided in the side surface of the holder A gap is provided between the inner peripheral surface of the sleeve and the edge of the opening of the socket, into which the mouthpiece is inserted, to communicate the opening in the shade and the opening on the side of the holder, A tubular portion provided with a cap and a ring-shaped loosening preventing member provided on the outer periphery of the tubular portion, the loosening preventing member enters the edge of the opening of the socket and prevents rotation of the lamp. Means for preventing rotation.

According to the present invention, it is possible to prevent loosening of the fastening of the lamp to the socket.

FIG. 1 is a front view of an LED lamp according to a first embodiment of the present invention. FIG. 2 is a plan view of the LED lamp as viewed from above. FIG. 3 is a bottom perspective view of the LED lamp. FIG. 4 is an exploded perspective view of the LED lamp. FIG. 5 is a sectional view taken along the line V--V of FIG. FIG. 6 is a front view of the tubular portion. 7 is a cross-sectional view taken along the line VII-VII in FIG. FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. FIG. 9 is a plan view of the substrate support plate and the cylindrical portion as viewed from above. FIG. 10 is an enlarged view of the vicinity of the connection portion and the tubular portion connection portion of FIG. 5. FIG. 11 is a front view showing the configuration of a high ceiling light fixture to which an LED lamp is attached. FIG. 12 is a cross-sectional view of a high ceiling light fixture. FIG. 13 is a bottom perspective view of the LED lamp attached to the socket. FIG. 14 is a partial cross-sectional view showing the cross section of the connection portion between the socket and the base. FIG. 15 is a plan view of the loosening prevention member as viewed from the enlarged diameter portion side. FIG. 16 is a bottom view of the loosening prevention member as viewed from the socket side. FIG. 17 is a perspective view of the loosening prevention member. FIG. 18 is a cross-sectional view taken along line XVI-XVI of FIG. FIG. 19 is a lower perspective view showing a state in which the LED lamp to which the loosening prevention member according to the second embodiment of the present invention is attached is attached to a socket. FIG. 20 is a side view showing a state in which the LED lamp on which the loosening prevention member is mounted is attached to the socket. FIG. 21 is a cross-sectional view showing a state in which the LED lamp on which the loosening prevention member is mounted is attached to the socket. FIG. 22 is a side view of the LED lamp on which the locking member is mounted. FIG. 23 is a perspective view of the loosening prevention member, in which (A) is an upper perspective view and (B) is a lower perspective view. FIG. 24 is a trihedral view showing the configuration of the loosening prevention member, (A) is a plan view, (B) is a side view, and (C) is a bottom view. FIG. 25 is a cross-sectional view taken along the line AA of FIG. 24 (C). FIG. 26 is an explanatory view of a modification of the present embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following embodiments, an LED lamp provided with an LED as a light source is exemplified as a lamp provided with a light emitting element as a light source, but the present invention is not limited to this, for example, other light emission such as organic EL It is applicable also to the lamp | ramp which equips an element with a light source.

First Embodiment
FIG. 1 is a front view of an LED lamp 200 according to the present embodiment. FIG. 2 is a plan view of the LED lamp 200 as viewed from above. FIG. 3 is a bottom perspective view of the LED lamp 200 (lamp). FIG. 4 is an exploded perspective view of the LED lamp 200. FIG. 5 is a cross-sectional view taken along the line V-V of FIG.

As shown in FIGS. 1 to 5, the LED lamp 200 is provided on the light emitting portion 210 on the upper surface, the cylindrical portion 230 extending downward and orthogonal to the light emitting portion 210, and the end 230 B of the cylindrical portion 230. And the base 3. In addition, the LED lamp 200 includes a plurality of heat radiation fins 225 provided on the back surface of the light emitting unit 210. Further, the LED lamp 200 is provided with a loosening prevention member 260 provided adjacent to the base 3 in the cylindrical portion 230.
The light emitting unit 210 emits light from substantially the entire upper surface 210A toward the upper side in FIG. 1, and as shown in FIG. 2, a globe 212 (cover) formed in a substantially circular shape in top view Equipped with
In detail, the light emission part 210 is provided with several LED 215 (light emitting element) which is a light source, and the LED board 211 (board | substrate) which mounted these LEDs 215, as shown in FIG. The light emitting unit 210 also includes a substrate support plate 220 (light source holding unit) that holds the LED substrate 211. In addition, the light emitting unit 210 includes a globe 212 which is a cover that covers the LED substrate 211. The light of the LED 215 passes through the globe 212 and is emitted to the outside.

The substrate support plate 220 is formed in a substantially circular shape having a diameter larger than that of the cylindrical portion 230, and the disk-like substrate mounting portion 221 on which the LED substrate 211 is mounted is a cylindrical portion 230. The cylindrical part connection part 261 and the radiation fin 225 which are connected are integrally provided. The substrate support plate 220 is formed of a metal having high heat dissipation, and in the present embodiment, is formed by casting an aluminum alloy by die casting. Also, the substrate support plate 220 may be formed, for example, by casting a magnesium alloy.
The surface of the substrate placement unit 221 is a flat placement surface 221C on which the LED substrate 211 is placed. A plurality of screw holes 221A (FIG. 4) are provided at substantially equal intervals in the circumferential direction at an intermediate portion in the radial direction of the substrate mounting portion 221. In the screw holes 221A, the LED substrate 211 is a substrate The screw 242 fixed to the mounting portion 221 is fastened.

An annular groove 226 having a diameter larger than that of the LED substrate 211 is formed on the entire periphery of the outer edge portion of the mounting surface 221C of the substrate mounting portion 221. A waterproof member 227 made of an elastic material such as silicon is fitted into the groove 226, for example.
The substrate support plate 220 includes a plurality of plate-like cover fixing portions 262 extending outward in the radial direction from the outer peripheral portion of the substrate mounting portion 221. The cover fixing portion 262 is formed with a boss portion 262A to which the globe 212 is fixed. ing.
The globe 212 is provided with an outer peripheral flange 214 covering the groove 226 from above at the outer peripheral portion, and the outer peripheral flange 214 has a fixing portion 214 a further extending radially outward at a position corresponding to the cover fixing portion 262. The globe 212 is fixed to the cover fixing portion 262 via a screw 241 which is inserted into the fixing portion 214a and fastened to the boss portion 262A. In this state, the waterproof member 227 is compressed by the outer peripheral flange portion 214.

The LED 215 is, for example, a packaged LED element, and in the present embodiment, a white LED is used as the LED 215. It goes without saying that LEDs of other luminescent colors other than white may be used as the LEDs 215.
The LED substrates 211 are formed in a disk shape, and the LEDs 215 are concentrically arranged and mounted on an outer peripheral portion of a mounting surface which is a surface of the LED substrates 211.
The LED substrate 211 is fixed by a screw 242 in a state where the back surface of the LED substrate 211 is in contact with the substrate mounting portion 221 of the substrate support plate 220. At substantially the center of the LED substrate 211, a wiring hole 211A through which a lead wire 263 for power supply of the LED 215 passes is formed.
The LED substrate 211 is made of a metal material having high thermal conductivity, such as an aluminum material. Therefore, the heat generation of the LED 215 can be efficiently transferred to the substrate mounting portion 221 of the substrate support plate 220, and the heat can be effectively dissipated from the heat radiation fin 225.

The cylindrical portion connection portion 261 of the substrate support plate 220 is a concave portion formed so as to dent the central portion of the surface of the substrate placement portion 221 toward the die 3, and has a cylindrical cylindrical portion 264 and a cylindrical shape. And a through hole 223 penetrating the bottom of the partial connection portion 261. The start end 230A of the cylindrical portion 230 is fitted and connected to the through hole 223.

The heat dissipating fins 225 are thin plates erected substantially at right angles on the back surface of the substrate mounting portion 221 of the substrate support plate 220, and the respective plates are formed in substantially the same shape. A plurality of heat radiation fins 225 are arranged substantially radially around the cylindrical portion connection portion 261 around the axial line of the cylindrical portion 230, and are arranged at substantially equal intervals in the circumferential direction. In addition, the radiation fin 225 is not limited to what is arrange | positioned radially, and should just be mutually spaced apart and arrange | positioned.
The height of the radiation fin 225 is substantially equal to the depth of the tubular portion connection portion 261 over substantially the entire radial direction except for the inner end portion 225A. The inner end portion 225 A is formed to be inclined such that the height is smaller as it approaches the cylindrical portion 264.
The radiation fins 225 extend from the vicinity of the cylindrical portion 264 of the cylindrical portion connection portion 261 to the outer peripheral side in the radial direction, and extend beyond the outer edge portion 221 B (FIG. 5) of the substrate mounting portion 221 of the substrate support plate 220. Projected into That is, the heat radiation fin 225 has an outer end portion 225B that protrudes further outward in the radial direction than the outer edge portion 221B. In addition, a gap 265 is provided between the inner end 225A of the heat radiation fin 225 and the outer peripheral surface of the cylindrical portion 264. By providing the gap 265, air can be circulated around the tubular portion connection portion 261.

The base 3 is crowned on the end 230 B of the cylindrical portion 230. The cylindrical portion 230 is formed of a resin material such as polycarbonate having insulation. Thereby, the insulation between the cylindrical portion 230 and the base 3 is achieved. According to this configuration, by forming the cylindrical portion 230 with a resin material, the weight of the cylindrical portion 230 can be reduced.
The cylindrical portion 230 may be formed by insert molding a member formed of a metal having thermal conductivity and a member formed of a material having an insulating property.

The electric circuit board 50 (FIG. 5) is held and stored in the substrate holder 55 inside the cylindrical portion 230. The electric circuit board 50 is electrically connected to the base 3 at the end on the base 3 side through a lead wire (not shown). As shown in FIGS. 4 and 5, the substrate holder 55 is inserted and fixed in the cylindrical portion 230 in a state in which the electric circuit board 50 is held.
The base 3 has a threaded cylindrical shell 6 which is screwed into a socket 290 (FIG. 11) of an existing light fixture (not shown), and an insulating portion 4 at the top of the end of the shell 6. And the eyelet 5 provided, and the shell 6 and the eyelet 5 are comprised by the shape and size which can be mounted | worn with the existing socket. Thus, the LED lamp 200 can be attached to a socket on a ceiling or a wall, a socket of a lamp holder or the like (not shown) used by attaching an existing light bulb, and can be used as a substitute for the existing light bulb. As an example of the above-mentioned socket, E26 type socket is mentioned, for example.

FIG. 6 is a front view of the cylindrical portion 230. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG.
As shown in FIG. 6 to FIG. 8, in the cylindrical portion 230, a cylindrical portion main body 267 in which the electric circuit board 50 is accommodated, a connection portion 269 connected to the cylindrical portion connection portion 261, and the cap 3 are fixed. And an end 230B. Further, the cylindrical portion 230 is provided with a rotation preventing member attaching portion 268 to which the loosening preventing member 260 is attached.
The tubular portion main body 267 is formed in a cross-sectional regular polygonal shape (a regular octagon in the present embodiment), and is a portion that occupies the most length in the axial direction of the tubular portion 230. Further, the cylindrical portion main body 267 is formed in a tapered shape which is tapered toward the base 3 side. At the bottom of the end 230B,

holes

285A and 285B to which lead wires (not shown) extending from the electric circuit board 50 to the base 3 are connected are formed.
The rotation prevention member attachment portion 268 is formed in a substantially circular cross section orthogonal to the long axis of the cylindrical portion 230, and is formed between the cylindrical portion main body 267 and the end 230B.

The cylindrical portion 230 is formed by resin molding using a split mold (not shown). The parting line of this mold is provided in accordance with the position of the regular octagonal corner portion 267A of the cylindrical portion main body 267. As a result, a line appearing on the surface of the cylindrical portion main body 267 due to the parting line overlaps the corner portion 267A, so that the above line does not stand out, and the appearance can be improved. In addition, since the tubular portion main body 267 is polygonal, the tubular portion main body 267 can be easily grasped by hand, and the workability is good.

The connection portion 269 is provided at the start end 230A of the cylindrical portion 230.
The connection portion 269 is a first cylindrical portion 271 fitted to the inner peripheral portion of the through hole 223 of the cylindrical portion connection portion 261, and a second diameter larger than the first cylindrical portion 271. A cylindrical portion 272, and a second flange portion 278 projecting radially outward from the first cylindrical portion 271 so as to connect the first cylindrical portion 271 and the second cylindrical portion 272; And a flange portion 231 protruding outward in a radial direction from the second cylindrical portion 272.

The flange portion 231 is provided on the most starting end side of the cylindrical portion 230, and the second cylindrical portion 272 and the second flange portion 278 are the flange portion 231 and the first cylinder in the axial direction of the cylindrical portion 230. It is provided between the second portion 271 and the second portion 271. The outer diameter of the second flange portion 278 is smaller than the outer diameter of the flange portion 231.
The first cylindrical portion 271 is formed to have a substantially circular cross section, and is continuous with the cylindrical portion main body 267. The lower surface (the surface on the base 3 side) of the second flange portion 278 is an annular contact surface 278A.
In the cylindrical portion 230, the radius of curvature of the corner portion 279 of the connection portion between the second flange portion 278 and the first cylindrical portion 271 (so-called radius of the inner radius portion of the bent portion) The radius of curvature of the corner 280 of the connecting portion with the cylindrical portion 272 is larger than the radius of curvature of the corner 280.

FIG. 9 is a plan view of the substrate support plate 220 and the cylindrical portion 230 as viewed from above.
As shown in FIGS. 4, 6 and 9, on the upper surface of the flange portion 231, a wall portion 231 A that protrudes in the axial direction along the peripheral edge portion of the inner peripheral portion of the flange portion 231 is formed. Further, the flange portion 231 is provided with a plurality of ribs 231B for connecting the upper surface of the flange portion 231 and the outer surface of the wall portion 231A. The wall portion 231A has a pair of notch portions 231C in which the wall portion 231A is not provided.
A plurality of boss holes 231D penetrating the flange portion 231 are formed on the upper surface of the flange portion 231, and a flange portion fixing screw 243 (see FIG. 13) that fixes the flange portion 231 to the cylindrical portion connection portion 261 in the boss hole 231D. 4) is inserted.

FIG. 10 is an enlarged view of the vicinity of the connection portion 269 and the tubular portion connection portion 261 of FIG.
As shown in FIG. 10, the cylindrical portion 230 is inserted into the through hole 223, and is fixed to the substrate support plate 220 so that the flange portion 231 and the second flange portion 278 are hooked on the cylindrical portion connection portion 261. Ru. The cylindrical portion 264 of the cylindrical portion connection portion 261 is formed in a step-like shape in accordance with the shapes of the flange portion 231 of the cylindrical portion 230 and the second flange portion 278.
In detail, the cylindrical portion connection portion 261 is configured such that the first recess 273 in which the central portion of the substrate placement portion 221 is recessed toward the cap 3 and the central portion of the first recess 273 is recessed toward the cap 3 And a fitting cylindrical portion 275 extending from the central portion of the second concave portion 274 to the base 3 side. The through hole 223 is formed by the inner peripheral portion of the fitting cylindrical portion 275.

The flange portion 231 is accommodated in the first recess 273. The inner diameter of the first recess 273 is formed to be slightly larger than the outer diameter of the flange portion 231, and the bottom portion 273A of the first recess 273 that receives the flange portion 231 is formed flat. A plurality of fixing holes 273B (FIG. 9) to which the flange fixing screws 243 are fastened are formed in the bottom 273A which is also the peripheral edge of the through hole 223.
A flat, ring-shaped heat insulating member 276 (heat insulating material) is interposed between the flange portion 231 and the bottom portion 273A. For example, a non-woven fabric, a silicon packing, or the like is used as the heat insulating member 276. By providing the heat insulating member 276, the heat insulation between the substrate support plate 220 and the flange portion 231 can be secured, and the influence of the heat transmitted from the substrate support plate 220 such as deterioration of the flange portion 231 can be reduced. Furthermore, since the heat insulating member 276 also functions as a vibration absorbing member by bending, the influence of vibration acting on the flange portion 231 can also be reduced.

The second tubular portion 272 and the second flange portion 278 are accommodated in the second recess 274. The inner diameter of the second recess 274 is formed slightly larger than the outer diameter of the second cylindrical portion 272, and the bottom 274A of the second recess 274 receives the contact surface 278A of the second flange 278. Is formed flat.
A ring-shaped seal member 277 (waterproof packing) made of an elastic material is fitted on the outer peripheral surface of the first cylindrical portion 271. The seal member 277 has an abutment surface 278A and a bottom portion 274A. Interposed in a compressed state. For the seal member 277, for example, a packing made of a material such as rubber is used. By providing the seal member 277, waterproofness between the substrate support plate 220 and the second cylindrical portion 272 can be secured, and furthermore, the seal member 277 also functions as a vibration-proof member by bending. The influence of vibration acting in the vicinity of the two cylindrical portions 272 can also be reduced. Here, the seal member 277 may have a heat insulating property in addition to the sealing property. That is, the heat insulating material can be provided between the flange portion 231 and / or the second flange portion 278 and the substrate support plate 220.

When connecting the cylindrical portion 230 to the substrate support plate 220, first, the seal member 277 and the heat insulating member 276 are attached to the first cylindrical portion 271 and the flange portion 231 of the cylindrical portion 230, respectively. Then, the cylindrical portion 230 is passed through the through hole 223, and the flange portion 231 and the second flange portion 278 are hooked in the first recess 273 and the second recess 274. Thereafter, the connection portion 269 is fixed to the cylindrical portion connection portion 261 by fastening the flange portion fixing screw 243 (FIG. 4) to the fixing hole portion 273B (FIG. 9).
Further, as shown in FIG. 4, the substrate holder 55 has a bridge (not shown) at the upper end which is passed through the notch 231C (FIG. 9) of the flange 231, and the flange fixing screw is fixed to this bridge. By inserting 243, the flange portion 231 is tightened and fixed together.

In the present embodiment, since the substrate support plate 220 is formed of metal, although high heat dissipation performance can be obtained, the weight is large. The cylindrical portion 230 fixed to the substrate support plate 220 by the flange portion fixing screw 243 is formed of a resin that tends to have lower strength than metal. Therefore, the cylindrical portion 230 is easily loaded with the weight of the substrate support plate 220 in the boss hole 231D (FIG. 9) in which the flange portion fixing screw 243 is inserted. In addition, the cylindrical portion 230 formed of a resin material may be deteriorated by external factors such as ultraviolet light and vibration, and the strength may be reduced. And there is a possibility that a crack may occur in the flange portion 231 from the boss hole 231D due to these factors.

According to the configuration of the present application, the cylindrical portion 230 is inserted into the through hole 223 of the substrate support plate 220, and the flange portion 231 of the cylindrical portion 230 is hooked on the bottom 273A of the first recess 273 on the outer peripheral side of the through hole 223 Then, the cylindrical portion 230 is fixed to the substrate support plate 220. As a result, even if a crack occurs due to deterioration in the vicinity of the boss hole 231D, the flange portion 231 is caught, so that the substrate support plate 220 is not detached from the cylindrical portion 230, and the connection function can be prevented from being lost. In addition, even if the flange portion 231 is damaged, the second flange portion 278 of the cylindrical portion 230 is hooked to the second concave portion 274, so that the substrate support plate 220 may be separated from the cylindrical portion 230. Can prevent the connection function from being lost.
In addition, the radius of curvature of the corner 279 on the second flange 278 side is larger than the radius of curvature of the corner 280 on the flange 231 side, so the strength of the second flange 278 is high. Therefore, damage to the second flange portion 278 can be prevented, and the connection function by the second flange portion 278 can be maintained.

Further, since the flange portion 231 and the second flange portion 278 of the cylindrical portion 230 are fixed to the first recess 273 and the second recess 274 in which the substrate placement portion 221 is recessed, the flange portion 231 and the second flange The second flange portion 278 does not directly touch the LED substrate 211 mounted on the substrate mounting portion 221. Thus, the flange portion 231 and the second flange portion 278 made of a resin material can be prevented from becoming a thermal resistance of the LED substrate 211, and the heat of the LED substrate 211 can be efficiently dissipated from the heat dissipation fins 225 .

In addition, since the cylindrical portion 230 is disposed apart from the LED substrate 211 and disposed in the cylindrical portion connection portion 261, the cylindrical portion 230 made of a resin material does not directly touch the LED substrate 211 which is heated. It is possible to prevent the tubular portion 230 from having a defect such as deformation or deterioration due to heat.
Further, in the substrate support plate 220, the substrate placement portion 221, the cylindrical portion connection portion 261, and the radiation fin 225 are integrally formed by casting. Therefore, the substrate support plate 220 can be easily manufactured while increasing the strength of the substrate support plate 220. Further, since the thermal resistance is reduced by the integration, heat can be effectively dissipated from the radiation fin 225.

Next, the configuration around the radiation fin 225 will be described in detail.
As shown in FIGS. 2, 5 and 9, the outer diameters of the outer edge portion 221 B of the substrate placement portion 221 and the outer peripheral flange portion 214 of the globe 212 are substantially equal. The outer edge and the outer edge 221B substantially overlap.
The outer end portion 225 B of the heat radiation fin 225 protrudes radially outward beyond the outer edge portion 221 B of the substrate mounting portion 221, and also protrudes radially outward with respect to the outer edge of the globe 212.

As shown in FIGS. 1 to 5, the heat dissipating fin 225 is provided with a cylindrical connecting portion 281 which connects the radial tip portion 225C of the outer end portion 225B in the circumferential direction to surround the substrate mounting portion 221 from the outside. . The connecting portion 281 is a thin plate formed to have a thickness equal to that of the heat dissipating fins 225 or thinner than the heat dissipating fins 225 in plan view, and also functions as a heat dissipating fin. The heat dissipating fins 225 are connected to each other by the connecting portion 281 to increase the strength. In particular, since the connecting portion 281 is provided at the tip portion 225C on the outermost side, the strength of the heat radiation fin 225 can be effectively increased.

The connection portion 281 is connected to the tip portion 225C, and the upper end 225D (FIG. 4) of the heat radiation fin 225 protrudes slightly above the upper edge 281A of the connection portion 281. The connecting portion 281 is provided closer to the upper end 225D than the middle portions above and below in the height direction of the heat dissipating fin 225, and is not provided on the lower end 225E of the heat dissipating fin 225.
The tip of the outer end portion 225B of the heat dissipating fin 225 is closed by the connecting portion 281, whereby the

heat dissipating fins

225, 225, the outer edge portion 221B, and the connecting portion 281 which are adjacent to each other surround the substrate placement portion 221 A plurality of substantially rectangular openings 282 are formed in plan view. The airflow flowing around the heat radiation fin 225 flows in the axial direction of the tubular portion 230 through the opening 282. In the present embodiment, since the connecting portion 281 is provided at the tip portion 225C of the heat radiation fin 225, the connecting portion 281 does not get in the way, and the opening 282 can be formed large. Therefore, the air flow can smoothly flow through the opening 282 and the heat can be dissipated efficiently.

The connecting portion 281 has

notches

283 and 283 which cut out a part of the cylindrical shape and open the opening 282 to the outer peripheral side. In detail, the

notches

283 and 283 are provided at positions where the pair of

notches

283 and 283 are substantially opposed to each other, that is, at positions different by approximately 180 ° in the circumferential direction. The opening 282 of the part in which the

notch part

283 and 283 were provided turns into the

open part

284 and 284 open to the outer peripheral side. That is, the connecting portion 281 does not connect the tip portions 225C of all the radiation fins 225, but connects the tip portions 225C of the adjacent radiation fins 225 except for a part of the radiation fins 225.

The

open parts

284, 284 are provided at places not overlapping the cover fixing part 262. Since the air flow also flows from the outer peripheral side to the

open portions

284 and 284, the heat radiation fins 225 of the open portion 284 can effectively dissipate heat.
Further, the opening

portions

284 and 284 are used as positioning portions to which jigs (not shown) for positioning the substrate support plate 220 are fitted when the LED lamp 200 is assembled. For this reason, it is not necessary to provide a dedicated positioning part, and the structure can be simplified. Further, even when the jig is not used, the open portions 284 can be positioned as marks of the reference position.

The cover fixing portion 262 to which the outer peripheral flange portion 214 of the globe 212 is fixed is provided on the upper end 225D of the adjacent

outer end portions

225B and 225B so as to close a part of the opening 282. A plurality of cover fixing portions 262 are arranged at substantially equal intervals in the circumferential direction, and the openings 282 are arranged between the adjacent

cover fixing portions

262 and 262.
The outer edge of the cover fixing portion 262 is connected to the upper edge 281A of the connecting portion 281. Therefore, the rigidity of the cover fixing portion 262 can be increased by the connecting portion 281, and the glove 212 can be firmly and stably fixed to the cover fixing portion 262.

As shown in FIG. 3, the screw holes 221A and the bosses 262A are disposed at positions overlapping the radiation fins 225 in a plan view, and the bottoms of the screw holes 221A and the bosses 262A are of the substrate mounting part 221. It protrudes downward from the back surface and is integrally formed with the radiation fin 225. As described above, since the screw holes 221A and the bosses 262A are integrally formed with the heat radiation fins 225, the bottoms of the screw holes 221A and the bosses 262A do not block the flow path between the

heat radiation fins

225 and 225. Therefore, the air flow can smoothly flow through the heat dissipating fins 225, and the heat dissipating property is good. Further, the bottoms of the screw holes 221A and the bosses 262A are hidden by the heat radiation fins 225 and become inconspicuous, so that the appearance is good.

The connecting portion 281 is integrally formed with the heat dissipating fins 225 when the substrate support plate 220 is cast. For this reason, the thermal resistance between the radiation fin 225 and the connection portion 281 can be reduced, and high heat dissipation can be obtained, and high strength can be obtained.
In addition, when casting the substrate support plate 220, the hot water flows to the heat dissipating fins 225 through the connection portion 281 and the hot water is easily spread over the heat dissipating fins 225, so that the castability is good.

Next, the configuration around the loosening prevention member 260 will be described in detail.
FIG. 11 is a front view showing the configuration of the high ceiling light fixture 400 to which the LED lamp 200 is attached, and FIG. 12 is a cross sectional view of the high ceiling light fixture 400. As shown in FIG.
The high ceiling light fixture 400 is a hanging type fixture used for indoor lighting of high ceiling facilities such as factory facilities and gymnasiums, and a holder 401 suspended and fixed to the ceiling surface and light emitted by the LED lamp 200 And a shade 403 (also referred to as a "reflector") for light distribution control, and the shade 403 is provided integrally with the holder 401.
In addition, although the holder 401 of a ceiling direct attachment type is shown in these FIG. 11 and FIG. 12, the holder of not only this but a chain suspension type or a pipe suspension type can also be used.

As shown in FIG. 12, the holder 401 includes a cylindrical holder main body 410 having an opening 410 A into which the base 3 of the LED lamp 200 is inserted, and a suspension fitting 411. The holder base 410 is internally provided with a socket base 404 in which the LED lamp 200 is inserted and attached, and a plurality of slit openings 415 are provided on the side surface. The socket base 404 is a cylindrical body that extends substantially coaxially with the holder main body 410, and a socket 290 is provided at the tip end portion 404 A on the opening 410 A side of the holder 401.
The suspension fitting 411 is a fitting fixed to the ceiling surface, and includes a case body 411A incorporating a connection member 413 to which a wire disposed on the ceiling or the like is connected. In the connection member 413, an electric wire 412 extending from the socket 290 is led through the inside of the socket base 404 to the suspension fitting 411 and is connected, and is electrically connected to a wire disposed on a ceiling or the like via the connection member 413. Ru.

The socket 290 is formed in the shape of a container whose one end is open, and specifically, has a bottomed cylindrical socket body portion 291. The base 3 of the LED lamp 200 is inserted into the socket body portion 291 from the connection opening 292, and the base 3 is screwed and fastened to a receiver (not shown) as a female screw provided inside. Then, in a state where the LED lamp 200 is attached to the socket 290 through the connection opening 292, the LED lamp 200 is suspended with the light emitting unit 210 facing the floor surface side, and the floor surface below the ceiling surface Will light up.

FIG. 13 is a bottom perspective view of the LED lamp 200 with the socket 290 attached. FIG. 14 is a partial cross-sectional view showing the connection between the socket 290 and the base 3.
As shown in FIGS. 4 and 14, the cylindrical portion 230 is provided with the rotation preventing member attaching portion 268 to which the loosening preventing member 260 is attached. An enlarged diameter portion 293 protruding in a bowl shape in the radial direction is integrally formed at an end of the rotation preventing member mounting portion 268 on the light emitting portion 210 side. The enlarged diameter portion 293 includes a pair of groove portions 293A formed by cutting out a part thereof, and the movement of the loosening prevention member 260 to the light emitting portion 210 side is restricted by the enlarged diameter portion 293.
The loosening prevention member 260 is fitted in and attached to the rotation prevention member attaching portion 268 and provided in a compressed state by the enlarged diameter portion 293 and the tip peripheral edge portion 292A of the connection opening 292 of the socket 290.

FIG. 15 is a plan view of the loosening prevention member 260 as viewed from the enlarged diameter portion 293 side. FIG. 16 is a bottom view of the loosening prevention member 260 seen from the socket 290 side. FIG. 17 is a perspective view of the loosening prevention member 260. FIG. FIG. 18 is a cross-sectional view taken along line XVI-XVI of FIG.
As shown in FIGS. 14 to 18, the loosening prevention member 260 is a ring-shaped member mounted in a coaxial positional relationship with the cylindrical portion 230 of the LED lamp 200, and for example, is relatively large such as silicone rubber. It is made of an elastic material made of resin having elasticity. Specifically, the loosening prevention member 260 has a ring main body 294 substantially circular in a plan view, and a fitting hole 295 formed at the center of the ring main body 294 and fitted in the rotation preventing member attaching portion 268. Have.
On the inner peripheral surface of the fitting hole 295, an annular projection 295A (FIG. 18) is formed which protrudes radially inward over the entire circumference. The protrusions 295A are formed in a plurality of steps in the axial direction of the fitting hole 295.

The ring main body portion 294 is a front end peripheral portion 292A of the socket 290 on the lamp side contact surface 296 which abuts the lower surface of the enlarged diameter portion 293 when mounted to the LED lamp 200 and the back side of the lamp side contact surface 296. And the socket side contact surface 297 (contact part) which contacts.
As shown in FIG. 18, a chamfered portion 298 chamfered at approximately 45 ° is formed on the outer peripheral side edge on the lamp side contact surface 296 side of the ring main body portion 294. The end 298 A on the lamp side abutting surface 296 side of the chamfered portion 298 is located closer to the lamp side abutting surface 296 than the middle portion in the thickness direction of the ring main body 294.
A pair of convex portions 299 (engaging portions) protruding in the axial direction of the ring main body portion 294 is formed on the peripheral portion of the fitting hole 295 on the lamp side contact surface 296. The convex portion 299 is engaged with and engaged with the groove portion 293A of the enlarged diameter portion 293 provided in the cylindrical portion 230, and restricts the rotation of the loosening prevention member 260 about the axis.

As shown in FIG. 16, a plurality of holes 300 are formed in the socket side contact surface 297 of the ring body 294 at substantially equal intervals in the circumferential direction of the ring body 294. The opening shape of the holes 300 has a substantially trapezoidal shape that tapers to the fitting hole 295 side (inner peripheral side of the ring main body 294) in a bottom view. Further, the depth of each hole 300 reaches approximately half the thickness of the ring main body 294, as shown in FIG.
By forming these holes 300 on the socket side contact surface 297 side, an annular inner peripheral wall 301 extending along the inner peripheral surface of the fitting hole 295 and the outer periphery of the ring main body 294 are formed. An annular outer peripheral wall 302 extending along the same and a connecting wall 303 (rotation preventing means) connecting the inner peripheral wall 301 and the outer peripheral wall 302 are formed. The outer peripheral wall portion 302 and the inner peripheral wall portion 301 respectively constitute an outer peripheral portion of the ring main body portion 294 and a part of the fitting hole portion 295 on the socket side contact surface 297 side.

The connection wall portion 303 is a plate-like member disposed radially around the fitting hole portion 295, and connects the inner peripheral wall portion 301 and the outer peripheral wall portion 302 in the radial direction. The connection wall portion 303 is also a plate-like convex portion provided upright from the bottom surface of the hole portion 300 (that is, the back surface of the lamp side contact surface 296).
The thickness of the connection wall portion 303 is smaller than the width of the hole 300 in the circumferential direction. Further, the thickness of the connection wall portion 303 is smaller than the thickness of the inner circumferential wall portion 301 and the outer circumferential wall portion 302. Since the connecting wall portion 303 is a thin plate, it deforms relatively easily. As shown in FIG. 18, the height of the connection wall portion 303 and the inner peripheral wall portion 301 is one step lower than that of the outer peripheral wall portion 302 (that is, slightly closer to the lamp side contact surface 296 from the socket side contact surface 297). In the back) is being formed.
The diameter of the outer peripheral wall portion 302 forming the bottom view ring shape is larger than the diameter of the front end peripheral portion 292A of the socket 290, and the diameter of the inner peripheral wall portion 301 forming the bottom view ring shape is the diameter of the front end peripheral portion 292A of the socket 290 Less than. That is, when the LED lamp 200 is attached to the socket 290, the front end peripheral portion 292A abuts on the upper end 303B of the connection wall portion 303.

As shown in FIG. 18, a beveled build-up portion 300 A is formed at the corner on the inner peripheral wall portion 301 side at the bottom of the hole 300. By providing the buildup portion 300A, the rigidity of the loosening prevention member 260 is secured while the connection wall portion 303 is provided.
The loosening prevention member 260 having such a configuration is integrally molded by resin molding as a whole including the connecting wall portion 303.

When the LED lamp 200 is attached to the socket 290, the base 3 of the LED lamp 200 is inserted into the connection opening 292 of the socket 290, and the LED lamp 200 is rotated in the fastening direction F in FIG. Are screwed into a socket (not shown) of the socket 290 and fastened.
When the LED lamp 200 is screwed into the socket 290, the loosening member 260 is integrated with the cylindrical portion 230 because the rotation with respect to the cylindrical portion 230 is regulated by the convex portion 299 of the lamp side contact surface 296. To rotate. Then, the connecting wall portion 303 provided on the socket side abutting surface 297 abuts on the leading edge portion 292A of the socket 290. In detail, with the tightening of the LED lamp 200, the connection wall portion 303 is such that the tip peripheral edge 292A of the socket 290 abuts against the upper end 303B and then the tip peripheral edge 292A is embedded in the upper end 303B. Is rotated while being compressed, and receives force from the tip peripheral portion 292A in the opposite direction L opposite to the fastening direction F. When receiving the force in the opposite direction L, each connecting wall portion 303 elastically deforms such that the upper end 303B falls in the opposite direction L with the proximal end portion 303A of the connecting wall portion 303 as a fulcrum.

That is, with the fastening by screwing in the LED lamp 200, the connection wall portion 303 is bent in the opposite direction L while the upper end 303B is compressed in the axial direction. When the LED lamp 200 is completely screwed into the socket 290 and fastened, and the connection wall 303 is deformed by a predetermined amount (hereinafter, this state is referred to as a rotation prevention state), the deformation of the connection wall 303 is an elastic deformation. And plastic deformation are both present. Further, in the loosening prevention member 260, the connection wall portion 303 is largely deformed in the rotation prevention state, and the outer peripheral wall portion 302 is not largely deformed in appearance.

In the present embodiment, when the loosening prevention member 260 is brought into the rotation preventing state, a repulsive force of the connecting wall portion 303 which is deformed is generated, and this repulsive force acts on the tip peripheral edge portion 292A of the socket 290 It becomes resistance of the screwed fastening looseness of the lamp 200. That is, the connection wall portion 303 is deformed so as to suppress the rotation of the LED lamp 200 in the loosening direction, as the LED lamp 200 is fastened. For this reason, the rotation of the LED lamp 200 in the loosening direction can be prevented, and the fastening of the LED lamp 200 can be prevented from being loosened due to vibration or the like.
Further, in the loosening prevention member 260, the fitting hole 295 is contracted in the radial direction as the connecting wall portion 303 is compressed, and the fitting hole 295 is in close contact with the outer peripheral surface of the rotation preventing member mounting portion 268 This also prevents the rotation of the LED lamp 200 in the loosening direction.

Furthermore, since the convex portion 299 of the loosening prevention member 260 engages with the groove portion 293A of the enlarged diameter portion 293 and the rotation of the loosening prevention member 260 is restricted, the loosening prevention member 260 is tightened when the LED lamp 200 is fastened. Can be reliably rotated integrally with the LED lamp 200. Therefore, the connection wall portion 303 can be effectively deformed, and the rotation of the LED lamp 200 in the loosening direction can be prevented.
Further, when the LED lamp 200 is fastened to the socket 290, the connection wall portion 303 is gradually deformed, and a force required to rotate the LED lamp 200 in the fastening direction F also gradually increases. For this reason, for example, the worker can easily recognize the fastening state as compared to the case where a flat packing having no connection wall portion 303 is used. For this reason, it can prevent that the LED lamp 200 is fastened by excessive clamping force.
Further, since the loosening prevention member 260 made of an elastic material is interposed between the socket 290 and the LED lamp 200, a vibration-proof effect can be obtained, and the vibration of the LED lamp 200 can be reduced. By reducing the vibration, the occurrence of loosening due to the vibration is also prevented.

As described above, according to the embodiment to which the present invention is applied, the cylindrical portion 230 includes the first cylindrical portion 271 inserted into the through hole 223, the first cylindrical portion 271, and the flange portion. And a second flange portion 278 having a diameter larger than that of the first cylindrical portion 271. The second recess 273 has a second flange portion 278 having a diameter smaller than that of the first recess 273. A recess 274 is provided and the second flange portion 278 is received in the second recess 274. For this reason, even if the flange portion 231 is damaged, the second flange portion 278 is accommodated in and caught by the second concave portion 274, so that it is possible to prevent the substrate support plate 220 from falling off the cylindrical portion 230.

Further, the second flange portion 278 connecting the second cylindrical portion 272 provided with the flange portion 231 and the first cylindrical portion 271 can prevent the substrate support plate 220 from falling off with a simple structure.
Further, the curvature radius of the corner 279 of the connecting portion between the second flange portion 278 and the first cylindrical portion 271 is the curvature of the corner 280 of the connecting portion between the flange portion 231 and the second cylindrical portion 272. Because it is larger than the radius, the strength of the second flange 278 is increased. Therefore, the second flange portion 278 can effectively prevent the substrate support plate 220 from falling off the cylindrical portion 230.

Furthermore, by the seal member 277 provided between the second flange portion 278 and the second recess 274, waterproofness can be secured, and a vibration-proof effect can also be obtained.
Further, the heat transmitted from the substrate mounting portion 221 to the flange portion 231 can be reduced by the heat insulating member 276 provided between the flange portion 231 and the first concave portion 273 of the substrate mounting portion 221, and the heat of the flange portion 231 Deterioration can be suppressed.
In addition, even if the flange portion 231 is damaged by the boss hole 231D which is a screwing portion, the substrate support from the cylindrical portion 230 by the portion of the flange portion 231 other than the boss hole 231D and the second flange portion 278 It is possible to prevent the plate 220 from falling off.

Further, according to the embodiment to which the present invention is applied, the substrate placement part 221 holding the LED substrate 211 on which the LED 215 is mounted, the cylindrical part 230 extending from the back surface of the substrate placement part 221, and the substrate placement part A plurality of heat dissipating fins 225 provided at intervals in the circumferential direction of the cylindrical portion 230 on the back surface of the cylindrical portion 230, and a connecting portion 281 connecting the heat dissipating fins 225 with each other. The connection end 281 connects the tip end portions 225C of the outer end portions 225B of the radiation fin 225 with each other. Therefore, the strength of the heat radiation fin 225 can be increased by the connecting portion 281 connecting the tip portions 225C of the outer end 225B of the heat radiation fin 225, and the opening 282 formed by the heat radiation fin 225 and the connecting portion 281. The air can flow efficiently through the opening 282. Therefore, high heat dissipation efficiency can be obtained while increasing the strength of the heat dissipation fins 225.

In addition, since the substrate mounting portion 221, the radiation fin 225, and the connecting portion 281 are integrally molded, the thermal resistance is reduced, and high radiation efficiency can be obtained, and high strength can be obtained.
In addition, since the connecting portion 281 is connected except for a part of the heat dissipating fins 225, the air is flowed from the outside in the radial direction between some of the heat dissipating fins 225 which are not connected to the connecting portion 281 and are open. High heat dissipation efficiency can be obtained, and the open portion 284 which is the open opening 282 can be used as a mark for positioning or the like, or the open portion 284 can be used as a fitting portion for a positioning jig or the like, thereby improving assembly.
Furthermore, the cover fixing portion 262 for fixing the globe 212 covering the front side of the substrate mounting portion 221 has a plate shape connecting the upper ends 225D of the radiation fins 225 and is connected to the connecting portion 281 of the outer end portion 225B. Thus, the strength of the cover fixing portion 262 can be reinforced by the connecting portion 281, and the glove 212 can be firmly fixed to the cover fixing portion 262.

Furthermore, according to the embodiment to which the present invention is applied, the lamp 200 is provided with the cap 3 provided on the cylindrical portion 230, and the cap 3 is screwed into the socket 290, and is provided on the outer periphery of the cylindrical portion 230. A ring-shaped locking member 260 is provided, and the locking member 260 is provided with a connecting wall 303 that engages with the edge 292A of the opening of the socket 290 and prevents the lamp 200 from rotating. Thus, when the loosening prevention member 260 is brought into contact with the front end peripheral portion 292A of the connection opening 292 of the socket 290, the connection wall portion 303 can prevent the LED lamp 200 from rotating. Therefore, looseness of fastening of the LED lamp 200 to the socket 290 can be prevented.

Further, since the connecting wall portion 303 is a convex portion which protrudes around the cylindrical portion 230 and engages with the edge portion 292A, the connecting wall portion 303 which is a convex portion is engaged with the edge portion 292A and the LED The rotation of the lamp 200 can be prevented. Therefore, looseness of fastening of the LED lamp 200 to the socket 290 can be prevented.
The connection wall portion 303 is a convex portion that abuts on the tip of the edge 292A or enters the edge 292A as the lamp 200 is screwed in, and is deformed between the edge 292A to prevent rotation. Therefore, the rotation of the LED lamp 200 can be effectively prevented by the repulsive force of the deformation of the convex portion. Therefore, looseness of fastening of the LED lamp 200 to the socket 290 can be prevented.
Further, since the connecting wall portion 303 is a plate-like convex portion radially disposed around the cylindrical portion 230, the rotation of the LED lamp 200 is effectively achieved by the repulsive force of the deformation of the plate-like convex portion. Can be prevented. Therefore, looseness of fastening of the LED lamp 200 to the socket 290 can be prevented.

In addition, since the convex portion of the connection wall portion 303 extends to the base, when the base 3 of the LED lamp 200 is attached to the socket 290, the connection wall portion 303 is surely inserted into the connection opening 292 of the socket 290. , Sufficient anti-rotational force can be obtained. For this reason, the rotation of the LED lamp 200 in the loosening direction can be prevented, and the fastening of the LED lamp 200 can be prevented from being loosened due to vibration or the like.
Further, the cylindrical portion 230 includes a radially enlarged diameter portion 293, the loosening prevention member 260 is compressed between the diameter enlarged portion 293 and the edge portion 292A, and the loosening prevention member 260 is an enlarged diameter portion An engagement portion 299 which engages with 293 and restricts the rotation of the loosening prevention member 260 is provided. Thus, the rotation of the loosening prevention member 260 can be restricted by the convex portion 299, and the connection wall portion 303 can be effectively functioned, so that loosening of fastening of the LED lamp 200 with respect to the socket 290 can be prevented.

Further, according to the embodiment to which the present invention is applied, a luminaire provided with the shade 403 on the holder 401 attached to the ceiling, the socket 290 housed in the holder 401, and the screw cap 3 of the lamp 200 mounted on the socket 290 At 400, a plurality of slit openings 415 are provided on the side surface of the holder 401, and between the inner peripheral surface of the holder 401 and the edge of the opening of the socket 401 into which the mouthpiece 3 is inserted A gap δ communicating the side openings is provided, and the lamp 200 is provided with a cylindrical portion 230 provided with the mouthpiece 3 at an end, and a ring-shaped loosening prevention member 260 provided on the outer periphery of the cylindrical portion 230, The anti-loosening member 260 comprises a connecting wall 303 which penetrates the edge 292A of the opening of the socket 290 and prevents the lamp 200 from rotating.As a result, the loosening prevention member 260 can be inserted into the front end peripheral portion 292A of the connection opening 292 of the socket 290, and the connection wall portion 303 can prevent the LED lamp 200 from rotating. Therefore, looseness of fastening of the LED lamp 200 to the socket 290 can be prevented.

The above embodiment shows one aspect to which the present invention is applied, and the present invention is not limited to the above embodiment.
Although the cylindrical connecting portion 281 is described as having the open portion 284 opened to the outer peripheral side in the above embodiment, the present invention is not limited to this. For example, the connecting portion 281 is an open portion It may be a complete cylinder without the 284.
In the above embodiment, the rotation preventing means is described as the connecting wall portion 303 which is a plate-like convex portion radially disposed around the cylindrical portion 230, but the present invention It is not limited. For example, the rotation preventing means may be a columnar convex portion disposed in plural numbers spaced from each other around the cylindrical portion 230 instead of the connection wall portion 303.

Second Embodiment
When the LED lamp 200 is attached to the socket 290, the loosening prevention member 260 of the first embodiment has a diameter of the outer peripheral wall portion 302 forming a ring shape in a bottom view larger than a diameter of the connection opening 292 of the socket 290. As shown in FIGS. 13 and 14, the outer peripheral wall portion 302 protrudes in the radial direction more than the distal end peripheral portion 292 A of the socket 290.

On the other hand, as shown in FIG. 12 above, in the high ceiling light fixture 400, the socket 290 is provided substantially coaxially with the holder 401, and between the inner peripheral surface 401A of the holder 401 and the leading edge portion 292A of the socket 290. Is provided with a gap δ. The inside of the shield 403 communicates with the holder 401 through the gap δ, and an exhaust path P communicating with the slit opening 415 provided on the side surface of the holder 401 is formed. That is, in the high ceiling light fixture 400, as the internal temperature of the shade 403 rises due to the heat generation of the LED lamp 200, the hot air inside the shade 403 rises and passes through the exhaust path P through the gap δ to the outside. It will be released.

However, as shown in FIG. 13 and FIG. 14, when the loosening prevention member 260 radially protrudes from the distal end peripheral portion 292A of the socket 290, the gap δ is narrowed and the hot air in the shade 403 is difficult to be discharged. turn into.
In particular, in the case of the high ceiling light 400, since the opening surface on the light irradiation side of the shade 403 is directed directly below the vertical, the hot air hardly escapes from the opening on the light irradiation side of the shade 403, The problem of wood is remarkable.
Therefore, in the second embodiment, a looseness preventing member 1260 will be described in which the gap δ between the holder 401 and the front end peripheral portion 292A of the socket in the high ceiling light fixture 400 is not narrowed.

In the present embodiment, the members described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Further, in the present embodiment, as in the first embodiment, the posture in which the light emitting unit 210 of the LED lamp 200 is directed vertically upward is used as the upper and lower reference.

FIG. 19 is a lower perspective view showing the LED lamp 200 mounted with the loosening prevention member 1260 according to the present embodiment attached to the socket 290, FIG. 20 is a side view, and FIG. 21 is a sectional view. FIG. 22 is a side view of the LED lamp 200 to which the loosening prevention member 1260 is attached.
The socket 290 is provided in the high ceiling light fixture 400 as in the first embodiment, and in these drawings, illustration of members other than the socket 290 is omitted. Further, in the state of being attached to the high ceiling light fixture 400, these figures are turned upside down.
As shown in these drawings, the loosening prevention member 1260 of the present embodiment is inserted into and attached to the cylindrical portion 230 of the LED lamp 200, similarly to the loosening prevention member 260 of the first embodiment. Then, as shown in FIG. 20, the loosening prevention member 1260 is locked by the above-mentioned bowl-shaped enlarged diameter portion 293 provided on the cylindrical portion 230, and when the socket is mounted, the enlarged diameter portion 293 and the tip peripheral edge of the socket 290 It is compressed between units 292A.

FIG. 23 is a perspective view of the loosening prevention member 1260, FIG. 23 (A) is a top perspective view, and FIG. 23 (B) is a bottom perspective view. FIG. 24 is a three-sided view showing the configuration of the loosening prevention member 1260, FIG. 24 (A) is a plan view, FIG. 24 (B) is a side view, and FIG. 24 (C) is a bottom view. FIG. 25 is a cross-sectional view taken along line AA of FIG. 24 (C).

As shown in these figures, the loosening prevention member 1260 is configured as a ring-shaped member attached to the cylindrical portion 230 of the LED lamp 200, similarly to the loosening prevention member 260 of the first embodiment. The ring main body 294 and the fitting hole 295 are formed in a substantially circular shape as viewed, and made of, for example, an elastic material made of a resin having relatively large elasticity such as silicone rubber.
In these figures, illustration of the convex part 299 provided in the lamp side contact surface 296 is omitted. Similarly to the loosening prevention member 260 of the first embodiment, the convex portion 299 is engaged with and engaged with the groove portion 293A of the enlarged diameter portion 293 provided in the cylindrical portion 230, and rotation of the loosening prevention member 260 around the axis Is a member that regulates

Further, as shown in these figures, the loosening prevention member 1260 of the present embodiment has a plurality of holes 1300 in the socket side contact surface 297 of the ring main body 294 as in the loosening prevention member 260 of the first embodiment. Are formed at substantially equal intervals in the circumferential direction of the ring main body 294. On the other hand, unlike the holes 300 of the loosening prevention member 260 of the first embodiment, each hole 1300 is open on the outer peripheral side.

That is, in the loosening prevention member 260 of the first embodiment, while the annular outer peripheral wall 302 is provided by the hole 300, the loosening prevention member 1260 of the present embodiment has a shape in which the outer peripheral wall 302 is removed. doing. In this configuration, the outer peripheral side distal end 303C (radial distal end) of the connection wall portion 303, which is a plate-like member arranged radially projecting around the fitting hole 295, is a free end. The connecting wall portion 303 is also a plate-like convex portion provided upright from the bottom surface of the hole portion 1300 (that is, the back surface of the lamp side contact surface 296).

The thickness of the connecting wall portion 303 is smaller than the width in the circumferential direction of the hole portion 1300 and smaller than the thickness of the inner circumferential wall portion 301. As described above, since the connecting wall portion 303 is a thin plate, it is relatively easily deformed.
In the loosening prevention member 1260, the diameter M1 (FIG. 24) is formed to the same extent as or slightly smaller than the diameter M2 (FIG. 21) of the socket 290.

Thereby, when attaching the LED lamp 200 to the socket 290, as shown in FIGS. 19 to 21, the connection wall portion 303 enters the connection opening 292, and the outer peripheral side distal end 303C of each connection wall portion 303 Instead of the socket side contact surface 297 of the first embodiment, it abuts on the inner peripheral surface 292B (FIG. 21) of the front end peripheral portion 292A of the socket 290. Then, as the LED lamp 200 twists, each connection wall portion 303 rubs against the inner circumferential surface 292 B and falls in the direction opposite to the fastening direction F (FIG. 24) centering on the fitting hole 295. While being compressed, it is elastically deformed in a bottom view spiral shape.

In a state in which the LED lamp 200 is completely screwed into and fastened to the socket 290 and the connection wall portion 303 is deformed (the above rotation prevention state), deformation of the connection wall portion 303 is elastic deformation and similar to the first embodiment. Both plastic deformations exist.
Thus, when the loosening prevention member 1260 is brought into the rotation preventing state, a repulsive force of the connecting wall portion 303 which is deformed is generated, and this repulsive force acts on the inner peripheral surface 292B of the distal end peripheral portion 292A of the socket 290. Therefore, it becomes resistance of the loose connection of the LED lamp 200. That is, the connection wall portion 303 is deformed so as to suppress the rotation of the LED lamp 200 in the loosening direction, as the LED lamp 200 is fastened. For this reason, the rotation of the LED lamp 200 in the loosening direction can be prevented, and the fastening of the LED lamp 200 can be prevented from being loosened due to vibration or the like.

Furthermore, in the loosening prevention member 1260, since the connecting wall portion 303 enters the connection opening 292 of the socket 290, the connecting wall portion 303 is also compressed radially inward, whereby the fitting hole portion 295 is radially inward. And the fitting hole 295 is in close contact with the outer peripheral surface of the anti-rotation member attachment portion 268, and the anti-rotation force in the loosening direction of the LED lamp 200 is generated also by the close contact.

Here, in a state where the LED lamp 200 is attached to the socket 290, the distance Q (FIG. 21) between the tip peripheral portion 292A of the socket 290 and the tip of the base 3 of the LED lamp 200 is not constant. It differs according to the height position of the inside of the deposit.
Therefore, depending on the size of the distance Q, even when the LED lamp 200 is attached to the socket 290, the connection wall portion 303 of the loosening prevention member 1260 does not sufficiently enter the connection opening 292 of the socket 290, and sufficient rotation prevention There is a fear that power can not be obtained.

Therefore, in the loosening prevention member 1260, as shown in FIG. 21, the height H (FIG. 24) of each connecting wall portion 303 is determined so that the upper end 303B reaches the cap 3 and covers the cap 3 I am satisfied. That is, since the base 3 is accommodated in the connection opening 292 of the socket 290 in the mogal type socket 290, the connection wall portion 303 is attached when the LED lamp 200 is attached regardless of the distance Q. Also, the connection opening 292 is securely inserted, and a sufficient anti-rotation force can be obtained.

As described above, according to the loosening prevention member 1260 of the present embodiment, the connection wall portion 303 enters the tip peripheral edge portion 292A of the connection opening 292 of the socket 290, and between the connecting wall portion 303 and the inner peripheral surface 292B of the tip peripheral edge portion 292A. Transform to prevent rotation.
As a result, the amount of radial protrusion from the distal end peripheral portion 292A of the socket 290 can be suppressed, so the gap δ between the distal end peripheral portion 292A and the inner peripheral surface 401A of the holder 401 is narrowed. The rotation of the LED lamp 200 in the loosening direction can be sufficiently prevented without blocking the P.

Further, since the upper end 303 B of each connection wall portion 303 is formed to reach the mouthpiece 3, when the mouthpiece 3 of the LED lamp 200 is attached to the socket 290, the connection wall portion 303 is reliably opened 292 for connection of the socket 290. And you can get enough anti-rotation power.

Further, according to the embodiment to which the present invention is applied, the loosening prevention member 1260 is provided to the lamp 200 and is in contact with the edge of the opening of the socket 290 containing the receiver to which the cap 3 is fastened. The connection wall portion 303 is provided to prevent the rotation of the base lamp 200. Thus, when the loosening prevention member 260 is brought into contact with the front end peripheral portion 292A of the connection opening 292 of the socket 290, the connection wall portion 303 can prevent the LED lamp 200 from rotating. Therefore, looseness of fastening of the LED lamp 200 to the socket 290 can be prevented.

Depending on the socket 290, the diameter M2 is not necessarily the same as or larger than the diameter M1 of the loosening prevention member 1260, and may be smaller than the diameter M1. In this case, although the loosening prevention member 1260 does not enter the connection opening 292 of the socket 290, as shown in FIG. 26, the upper end 303B of each connection wall portion 303 is the tip peripheral edge portion as in the first embodiment. By coming into contact with 292A and being elastically deformed as the LED lamp 200 twists, a rotation preventing force is generated.

The above-described first and second embodiments merely exemplify one aspect of the present invention, and it goes without saying that arbitrary modifications and applications are possible without departing from the spirit of the present invention. .
For example, although the mogular type was illustrated as the socket 290, it may be another type.

3 base 200 LED lamp (lamp)
230

Tubular part

260, 1260 Loosening prevention member 290 Socket 292 Connection opening (opening of socket)
292A edge (edge of opening)
293 Expansion section 297 Socket side contact surface (contact section)
299 Convex part (engagement part)
300, 1300 Hole 303 Connection wall (Rotation preventing means, projection)
400 High ceiling light fixture 401 Holder 403 Sword 415 Slit opening 1260 Preventive member 1300 Hole portion δ Gap P Exhaust path

Claims

A lamp provided on a cylindrical portion, the lamp being screwed into a socket;
A ring-shaped loosening preventing member provided on the outer periphery of the cylindrical portion, the loosening preventing member being engaged with the edge of the opening of the socket and provided with a rotation preventing means for preventing the rotation of the lamp. A lamp characterized by
The lamp according to claim 1, wherein the rotation preventing means comprises a convex portion which protrudes around the cylindrical portion and engages with the edge.
The convex portion of the rotation preventing means abuts on the tip of the edge or enters the edge as the lamp is screwed in, and is deformed between the edge to prevent rotation. The lamp according to claim 2.
The lamp according to any one of claims 1 to 3, wherein the rotation preventing means is a plate-like convex portion radially disposed around the cylindrical portion.
5. A lamp according to claim 4, wherein the convex portion extends to the base.
The cylindrical portion includes a radially projecting enlarged diameter portion, and the loosening prevention member is compressed between the enlarged diameter portion and the edge portion,
The lamp according to any one of claims 1 to 5, wherein the loosening prevention member includes an engaging portion which engages with the enlarged diameter portion to restrict the rotation of the loosening prevention member.
It has a rotation preventing means which is provided on a capped lamp and which abuts on an edge of an opening of a container containing a receiver to which the cap is fastened to thereby prevent rotation of the capped lamp. Element.
In a luminaire provided with a shade in a holder attached to a ceiling, a socket housed in the holder, and a screw cap of a lamp being screwed into the socket,
Providing a plurality of openings on the side of the holder;
A gap is provided between the inner peripheral surface of the holder and the edge of the opening of the socket, into which the mouthpiece is inserted, for connecting the inside of the shade and the opening of the side surface of the holder.
The lamp has a cylindrical portion provided with the mouthpiece at an end thereof;
And a ring-shaped loosening prevention member provided on an outer periphery of the cylindrical portion,
A luminaire characterized in that the anti-loosening member is fitted with an anti-rotation means which gets into the edge of the opening of the socket and prevents the lamp from rotating.