JP5545447B2 - Light bulb shaped lamp and lighting equipment - Google Patents

Description

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

  2. Description of the Related Art Conventionally, a light bulb shaped lamp using a semiconductor light emitting element has a metal casing, a light emitting module having a semiconductor light emitting element is disposed on one end side of the casing, and a globe that covers the light emitting module at one end of the casing Is attached. Further, the light bulb shaped lamp includes a synthetic resin case disposed in the housing, the lighting circuit is accommodated in the case, and a base is attached to the other end of the case.

  The casing is often made of aluminum die-casting with excellent heat dissipation, but some cases are formed by press molding.

  A light bulb shaped lamp whose casing is formed by press molding is generated when a semiconductor light emitting device is turned on by mounting a light emitting module on the surface of one end of a metal heat sink and bringing the heat sink into contact with the housing. Heat is conducted from the heat radiating plate to the housing to radiate heat from the housing.

  In order to obtain good thermal conductivity between the housing and the heat sink, an inclined portion that is inclined approximately 45 ° toward one end is provided near one end of the housing, and one end is provided at the periphery of the heat sink. An inclined portion that is inclined approximately 45 ° is provided. Thereby, the inner surface of the inclined portion of the housing and the surface on the other end side of the inclined portion of the heat radiating plate are in contact with each other, and the contact area is widened to obtain good thermal conductivity.

Utility Model Registration No. 3159084

  However, in a light bulb-type lamp in which the casing is formed by press molding, in order to obtain good thermal conductivity between the casing and the heat radiating plate, the inclination is inclined approximately 45 ° toward one end in the vicinity of one end of the casing. Since the steps are formed on the outer surface of the housing, the appearance of the housing is greatly different from the bulb shape.

  In consideration of suitability for lighting equipment and design, it is preferable that the bulb-shaped lamp has a shape that approximates the shape of a bulb. However, in a conventional bulb-shaped lamp in which the casing is formed by press molding, the bulb shape is largely It was different.

  The present invention has been made in view of such a point, and even if a press-molded housing is formed in a shape that approximates the shape of a light bulb, a light bulb that can ensure good thermal conductivity from the heat sink to the housing. An object of the present invention is to provide a shaped lamp and a lighting fixture using the bulb shaped lamp.

The light bulb shaped lamp of the embodiment has a reduced diameter portion that is reduced in diameter from one end side to the other end side, a cylindrical portion that is provided on one end side of the reduced diameter portion and is parallel to the lamp axis, and is cylindrical by press molding. A metal casing formed on the substrate. Assemble a synthetic resin case in the housing. Attach a base to the other end of the case. A lighting circuit is accommodated in the case. A light emitting module having a semiconductor light emitting element is mounted on a surface on one end side of the heat sink. Heat sink, the peripheral portion, and the end face portion, is formed on the other end side than the end face, and a second end portion reduced in diameter from one end to the other end, the end surface portion and the cylindrical portion of the housing The other end portion is in pressure contact with the casing so that at least a part thereof is in contact with the reduced diameter portion of the casing.

According to the present invention, a housing is flop press forming be formed to approximate the shape bulb shape, it can be expected that the heat radiating plate can ensure good thermal conductivity to the casing.

It is a perspective view of the section of the light bulb shaped lamp which shows one embodiment. It is a perspective view of the decomposition | disassembly state of a bulb-type lamp same as the above. The part of the attachment structure of the case and bulb | globe of a bulb-type lamp same as the above is shown, (a) is a perspective view of the state before attachment, (b) is a perspective view of the attachment state. This is a lighting fixture using the same bulb-type lamp.

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

  In FIG. 1 to FIG. 4, reference numeral 11 denotes a light bulb shaped lamp. The light bulb shaped lamp 11 is a cylindrical housing 12, one end side inside the housing 12 (a lamp connecting the globe 18 of the light bulb shaped lamp 11 and the base 15. A case 13 that is inserted from one end side in the axial direction and whose other end protrudes from the housing 12, a ring 14 that fixes the other end of the case 13 to the housing 12, and a base attached to the other end of the case 13 15, a light emitting module 16 disposed on one end side of the case 12 and the case 13, a heat sink 17 mounted on one end side of the case 13 with the light emitting module 16 mounted on one end side, and on one end side of the case 12 A globe 18 that is fitted and attached to one end of the case 13 and a lighting circuit 19 that is disposed in the case 13 are provided. The bulb-shaped lamp 11 has the same length as the incandescent bulb for general lighting, with the length in the lamp axis direction and the outer diameter of the maximum diameter portion in the direction intersecting the lamp axis direction being the same size as the incandescent bulb for general lighting. It is formed in an approximate shape.

  The casing 12 is made of a metal having excellent thermal conductivity and heat dissipation, and is formed in a cylindrical shape whose diameter increases from the other end side to the one end side by press molding. The casing 12 is formed with a cylindrical taper portion 22 whose diameter increases from the other end side toward the one end side. A cylindrical portion 23 parallel to the lamp shaft is formed at one end of the taper portion 22, and the other end is formed at the other end. An engaging portion 24 bent toward the center side of the lamp shaft is formed. The inner surface of the tapered portion 22 is formed on a tapered surface 22a that expands toward one end. A plurality of notches (not shown) are formed in the engaging portion 24 for positioning with the case 13.

  Further, the case 13 is formed of a synthetic resin having insulating properties such as PBT resin, for example, and is formed in a cylindrical shape that opens at both ends in the lamp axis direction and opens toward one end. The case 13 includes a case main body 27 arranged along the inside of the housing 12, a base mounting portion 28 protruding from the other end of the housing 12, and a housing between the case main body 27 and the base mounting portion 28. A stepped portion 29 that engages with the twelve engaging portions 24 is formed.

  The case main body 27 expands toward one end side in the lamp axis direction which is similar to the inner surface shape of the housing 12 so as to be arranged along the tapered surface 22a of the inner surface of the tapered portion 22 of the housing 12. It is formed in a taper shape. That is, the inner surface of the case body 27 is formed on the tapered surface 22a that expands toward one end side.

  A plurality of bosses 31 having mounting holes 30 for screwing the heat radiating plate 17 are formed on the inner surface of one end side of the case body 27 along the lamp axis direction. In the present embodiment, the bosses 31 are formed at two positions that are symmetrical with respect to the center of the case main body 27. However, the present invention is not limited to this, and three bosses 31 may be provided.

  A plurality of globe attaching portions 32 for attaching the globe 18 are formed at one end of the case body 27. In the present embodiment, the glove attachment portion 32 is formed at three locations that are equally spaced in the circumferential direction of one end of the case body 27, but is not limited thereto, and may be two locations or four or more locations. Each glove mounting portion 32 has a positioning projection 33 and a locking claw 34 that project from the case body 27 in one end direction. The positioning projection 33 is formed in a tapered shape with a narrower width on the front end side, and has a larger projection dimension in one end direction than the locking claw 34. The locking claw 34 is formed with a claw portion 35 protruding toward the outer diameter direction at the tip. A wiring guide 36 is formed at one end of the case body 27.

  A pair of board holding parts 37 for holding the lighting circuit board 74 of the lighting circuit 19 are formed opposite to each other and along the lamp axis direction from the inner face of the case body 27 of the case 13 to the inner face of the base mounting part 28. Has been. The pair of substrate holding portions 37 are formed at positions offset from the center of the case 13 at one side of the bosses 31 formed at two positions that are symmetrical with respect to the center of the case body 27. . Each substrate holding portion 37 is formed with a holding groove 38 into which the lighting circuit board 74 of the lighting circuit 19 is inserted along the lamp axis direction. On one end side of each substrate holding portion 37, a locking portion 39 is formed to prevent the lighting circuit substrate 74 of the lighting circuit 19 inserted into the substrate holding portion 37 from coming off and locking. The locking portion 39 is constituted by a hook having one end connected to the case 13 and the other end being a free end.

  The stepped portion 29 is formed with a plurality of projections (not shown) that are fitted in the respective notches of the engaging portion 24 of the housing 12 to position the circumferential position.

  The ring 14 is formed of an insulating synthetic resin such as PBT resin, for example, and is sandwiched between the casing 12 and the base 15 to insulate between them, and the engaging portion 24 of the casing 12 It is sandwiched between the step portion 29 of the case 13. The ring 14 is formed with a plurality of depressions 42 that are fitted to the protrusions of the case 13 to position the circumferential position.

  The base 15 is connectable to a socket for a general lighting bulb of E26 type, and is a shell 45 that is screwed and fixed to the peripheral surface of the base mounting portion 28 of the case 13, and the other end side of the shell 45. And an eyelet 47 provided on the top of the insulating portion 46.

  In addition, the light emitting module 16 has a rectangular plate-like substrate (module substrate) 50 made of a metal such as aluminum or ceramics having excellent thermal conductivity, and a central region of one surface which is a surface on one end side of the substrate 50. A surface light source 51 as a formed light source and a connector 52 mounted on the peripheral portion of one surface of the substrate 50 are provided.

  The surface light source 51 has a planar light emitting surface with a diameter of 2 mm or more. For example, a semiconductor light emitting element such as an LED element or an EL element is used. In this embodiment, an LED element is used as the semiconductor light emitting element, and a COB (Chip On Board) system in which a plurality of LED elements are mounted on the substrate 50 is employed. That is, a plurality of LED elements are mounted on the substrate 50, the plurality of LED elements are electrically connected in series by wire bonding, and a plurality of phosphor layers are formed of a transparent resin such as a silicone resin mixed with a phosphor. LED elements are integrally covered. For example, an LED element that emits blue light is used as the LED element, and a phosphor that emits yellow light by being excited by part of the blue light from the LED element is mixed in the phosphor layer. Therefore, the surface light source 51 is constituted by the LED element and the phosphor layer, and the surface of the phosphor layer which is the surface of the surface light source 51 becomes a light emitting surface, and white illumination light is emitted from this light emitting surface.

  A wiring pattern (not shown) is formed on one surface of the substrate 50, and a plurality of LED elements and a connector 52 are connected to the wiring pattern. A plurality of insertion holes 53 for screwing to the heat radiating plate 17 are formed in the peripheral portion of the substrate 50.

  In addition, the heat radiating plate 17 is formed in a flat disk shape from a metal such as aluminum or ceramics having excellent thermal conductivity. A recess 56 into which the other surface side of the substrate 50 of the light emitting module 16 is fitted is formed on one surface of the heat radiating plate 17, and a plurality of mounting holes 57 for screwing the substrate 50 through the insertion holes 53 of the substrate 50 into the recess 56. Is formed.

  The thickness end surface 58 of the peripheral portion of the heat radiating plate 17 is inclined at the same angle as the tapered surface 22a of the inner surface of the tapered portion 22 of the housing 12, and from the inside of the housing 12 to the tapered surface 22a of the inner surface of the tapered portion 22 A tapered surface 59 that is in surface contact is formed.

  In the vicinity of the peripheral portion of the heat radiating plate 17, a plurality of insertion holes 60 through which screws to be screwed to the bosses 31 are inserted are formed corresponding to the positions of the bosses 31 of the case 13.

  Around the heat radiating plate 17, a plurality of notches 61 are formed through which the globe attaching portions 32 of the case 13 penetrate one end side. Each notch 61 includes a notch 61a through which the positioning protrusion 33 penetrates and a notch 61b through which the locking claw 34 penetrates. Further, a notch 62 for wiring is formed around the periphery of the heat radiating plate 17 so as to correspond to the position of the wiring guide 36 of the case 13.

  In the assembled state of the bulb lamp 11, a gap 63 is formed between the other surface of the heat radiating plate 17 and one end of the case body 27 of the case 13, and the housing 12, the case 13, and the ring 14 are configured. In addition, the heat sink 17 is fitted from one end of the housing 12, and the tapered surface 59 of the heat sink 17 is brought into surface contact with the tapered surface 22a of the inner surface of the tapered portion 22 of the housing 12. In the state, a gap 63 is formed between the other surface of the heat radiating plate 17 and one end of the case main body 27 of the case 13.

  In addition, the globe 18 is formed of a material such as synthetic resin or glass having translucency and light diffusibility, and is formed in a dome shape opened toward the other end side in the lamp axial direction. At the opening edge of the other end side of the globe 18, a cylindrical fitting portion 66 that is fitted in parallel to the inside of the cylindrical portion 23 of the housing 12 is formed to protrude. The fitting portion 66 is formed in a cylindrical shape that is continuous in the circumferential direction without any breaks.

  At the other end of the fitting portion 66, a plurality of case attaching portions 67 attached to the globe attaching portions 32 of the case 13 are formed. Each case mounting portion 67 is formed with a wall portion 68 projecting to the other end side from the fitting portion 66, and a groove portion 69 into which the positioning projection 33 is fitted is formed in the wall portion 68 and the locking claw 34 is formed. A locking hole 70 is formed in which the claw portion 35 is fitted and hooked from the inner surface side of the wall portion 68. Both side surfaces in the groove 69 are inclined so as to expand toward the other end side so as to be fitted to both side surfaces of the tapered positioning projection 33. An introduction groove 71 that guides the claw portion 35 of the locking claw 34 to the locking hole 70 is formed at the tip of the wall portion 68. The groove 69 and the locking hole 70 have their inner surfaces in contact with the tip surface of the positioning protrusion 33 so that the position in the lamp axis direction is restricted, and both side surfaces in the groove 69 are In a mounted state of the globe 18 that is in contact with both side surfaces of the positioning projection 33 and whose circumferential position is regulated, the claw portion 35 of the locking claw 34 is fitted into the locking hole 70. When the globe 18 is attached, the tip of the wall 68 is separated from the heat sink 17 without contacting the surface.

  The lighting circuit 19 is a circuit that supplies a constant current to the LED elements of the light emitting module 16, and includes a lighting circuit board 74 and a plurality of lighting circuit components (not shown) mounted on the lighting circuit board 74. ing.

  The lighting circuit board 74 has one surface as a mounting surface on which main lighting circuit components are mounted, and the other surface as a wiring pattern surface on which wiring patterns to which the lighting circuit components are electrically connected are formed.

  The lighting circuit board 74 is inserted from one end side in the case 13, and both sides of the lighting circuit board 74 are fitted and held in the holding grooves 38 of the board holding portion 37. Accordingly, the lighting circuit board 74 is arranged vertically in the lamp axis direction in the case 13 so that the distance between the mounting surface and the inner surface of the case 13 is larger than the distance between the wiring pattern surface and the inner surface of the case 13. The case 13 is disposed at an offset position from the center.

  The shape of the lighting circuit board 74 is formed so that one end side is wide along the inner surface shape of the case 13. That is, a narrow portion 75 is formed on the other end side of the lighting circuit board 74 and is disposed in the base mounting portion 28 of the case 13, and is arranged in the case body 27 of the case 13 on one end side of the lighting circuit board 74. Thus, a wide portion 76 is formed which is wider than the other end side and becomes wider toward the one end side. Between the narrow portion 75 and the wide portion 76, a restricting portion 77 is formed that contacts the case 13 and positions the insertion position into the case 13.

  By forming the lighting circuit board 74 in such a shape that the one end side is wide in this way, the mounting area of the lighting circuit board 74 can be increased, so that the lighting circuit board is secured while securing the mounting area necessary for mounting the lighting circuit components. The length of 74 lamps in the axial direction can be shortened. As a result, the lighting circuit board 74 is arranged in the case 13 at a position close to the base 15 side, and the necessary insulation can be achieved without interposing an insulating member between the lighting circuit board 74 and the lighting circuit component and the heat radiating plate 17. A distance L is secured.

  A plurality of lighting circuit components, which are discrete components having lead wires, are mounted on the mounting surface of the lighting circuit board 74. In these lighting circuit components, the lead wire penetrates the lighting circuit board 74 and is soldered to the wiring pattern on the wiring pattern surface. The lighting circuit components mounted on the mounting surface of the lighting circuit board 74 include an electrolytic capacitor for a rectifying / smoothing circuit that rectifies and smoothes an AC voltage, an inductor for a chopper circuit that converts the rectified and smoothed voltage into a predetermined voltage, and the like. These include large resistors such as resistors used in this circuit, and small components such as switching elements, capacitors, and diodes of other chopper circuits. Of the lighting circuit components mounted on the mounting surface of the lighting circuit board 74, a larger component is disposed on one end side where the inner diameter of the case 13 is larger, and a smaller component is disposed on the other end side where the inner diameter of the case 13 is smaller. Has been placed.

  On the wiring pattern surface of the lighting circuit board 74, surface mounting components among the lighting circuit components are surface mounted. Examples of the surface mount component include a chip resistor and a chip capacitor.

  On the input side of the lighting circuit 19, input lead wires (not shown) are electrically connected to the shell 45 and the eyelet 47 of the base 15 through the other end opening of the case 13. Further, an output lead wire having a connector (not shown) connected to the connector 52 of the light emitting module 16 is connected to the output side of the lighting circuit 19.

  In order to assemble the light bulb shaped lamp 11, the lighting circuit 19 is inserted into the case 13 from one end side of the case 13. At this time, when both sides of the lighting circuit board 74 are inserted into the holding grooves 38 of the board holding part 37 of the case 13, both sides of the lighting circuit board 74 abut against the locking parts 39 on both sides, and the locking parts 39 are When the restricting portion 77 of the lighting circuit board 74 contacts the case 13 and is inserted to a predetermined mounting position where insertion is restricted, the lighting circuit board 74 gets over the locking portion 39 and lights up. The locking portion 39 is caught on one end side of the circuit board 74, and the lighting circuit 19 is held in the case 13 so as not to be detached. The output lead wire of the lighting circuit 19 is drawn out of the case 13 through the wiring guide 36 of the case 13.

  The case 13 is inserted from one end of the housing 12, the base mounting portion 28 of the case 13 is projected from the other end of the housing 12, and the ring 14 is fitted around the outer periphery of the base mounting portion 28 of the case 13 and the base 15 Screw in and attach. At this time, one lead wire for input of the lighting circuit 19 is connected to the eyelet 47 of the base 15, and the other lead wire is arranged on the outer periphery of the base mounting portion 28 of the case 13 and screwed into the base mounting portion 28. Then, it is connected to the shell 45 of the base 15 attached.

  When the case 13 is inserted into the housing 12, the plurality of protrusions provided in the stepped portion 29 of the case 13 and the plurality of notches provided in the engaging portion 24 of the housing 12 are fitted, and the case 13 And the housing 12 are prevented from rotating.

  In this manner, by attaching the base 15 to the base attaching portion 28 of the case 13, the casing 12, the case 13, in which the lighting circuit 19 is incorporated, the ring 14, and the base 15 are assembled together.

  Subsequently, while passing the positioning protrusion 33 and the locking claw 34 protruding from one end of the case 13 through the notches 61a and 61b in the peripheral portion of the heat radiating plate 17, the heat radiating plate 17 is connected to one end side of the housing 12. Fit into. Thereby, the tapered surface 59 of the plate thickness end surface 58 of the heat radiating plate 17 comes into surface contact with the tapered surface 22a of the inner surface of the tapered portion 22 from the inside of the housing 12. In this state, by passing the positioning projection 33 and the locking claw 34 of the case 13 through the notches 61a and 61b of the heat radiating plate 17, the circumferential positions of the heat radiating plate 17 and the case 13 are positioned, and the heat is dissipated. Each insertion hole 60 of the plate 17 and the mounting hole 30 of the boss 31 of the case 13 coincide with each other, and further, the position of the wiring notch 62 of the heat radiating plate 17 and the position of the wiring guide 36 of the case 13 coincide. In this state, a gap 63 is generated between the other surface of the heat radiating plate 17 and one end of the case body 27 of the case 13.

  Screws are screwed into the mounting holes 30 of the bosses 31 of the case 13 from the insertion holes 60 of the heat sink 17, and the heat sink 17 is fastened to the case 13 with screws. At this time, since there is a gap 63 between the other surface of the heat radiating plate 17 and one end of the case body 27 of the case 13, the tightening force by the screw causes the taper surface 59 of the plate thickness end surface 58 of the heat radiating plate 17 and the housing 12 to be tightened. In addition to the joint surface of the taper portion 22 with the taper surface 22a, the taper surface 59 of the plate thickness end surface 58 of the heat radiating plate 17 and the taper surface 22a of the taper portion 22 of the housing 12 are in pressure contact with each other, and good thermal conductivity is obtained. Secured. A silicone resin may be interposed between the tapered surface 59 of the plate thickness end surface 58 of the heat radiating plate 17 and the tapered surface 22a of the tapered portion 22 of the housing 12 in order to make the thermal conductivity uniform. .

  The light emitting module 16 is placed in the recess 56 of the heat sink 17 and screwed. The light emitting module 16 may be attached to the heat sink 17 in advance before the heat sink 17 is attached to the case 13.

  An output lead wire of the lighting circuit 19 is drawn out to one surface of the heat radiating plate 17 through the notch 62 of the heat radiating plate 17, and a connector at the tip of the lead wire is connected to the connector 52 of the light emitting module 16.

  Applying an adhesive such as silicone resin or cement to the inner periphery of the cylindrical portion 23 of the housing 12, and the case mounting portions 67 of the globe 18 are protruded through the heat radiating plate 17 of the globe mounting portions 32 of the case 13. The fitting portion 66 of the globe 18 is fitted inside the cylindrical portion 23 of the housing 12 in accordance with the position.

  At this time, first, the wall portion 68 of each case mounting portion 67 of the globe 18 is fitted inside the cylindrical portion 23 of the housing 12, and the radial position of the globe 18 and the housing 12 with respect to the lamp axis is the center. Is positioned. Thereafter, if necessary, the position of the globe 18 is adjusted by rotating the globe 18 with respect to the housing 12 so that the positioning protrusions 33 of the case 13 fit into the grooves 69 of the case mounting portions 67. Thus, the positions of the respective locking holes 70 of the globe 18 and the respective locking claws 34 of the case 13 are positioned. Thereafter, the fitting portion 66 of the globe 18 is fitted to the inner periphery of the cylindrical portion 23 of the housing 12, and the inner surface of each groove 69 of the globe 18 is in contact with the tip surface of each positioning projection 33 of the case 13. The position in the lamp axis direction is restricted by contact, and the claw portions 35 of the locking claws 34 of the case 13 are fitted into the respective locking holes 70 of the globe 18 so that the globe 18 is attached to the case 13.

  When the globe 18 is attached, the tip of the wall portion 68 of the globe 18 is not in contact with one surface of the heat radiating plate 17 and is separated, and the globe 18 is not in contact with one end of the cylindrical portion 23 of the housing 12. The globe 18 is supported by the case 13. Further, the inner surface of the groove portion 69 of the globe 18 is in contact with the tip surface of each positioning projection 33 of the case 13 so that the position in the lamp axis direction is positioned, and the locking hole 70 of the globe 18 is positioned. The claw portions 35 of the locking claw 34 of the case 13 are hooked and held, and both side surfaces in the groove 69 of the globe 18 are in contact with both side surfaces of the positioning projections 33 of the case 13 so that the circumferential position is positioned. . Accordingly, the globe 18 is attached in a state of being positioned with respect to the case 13.

  In addition, the assembly procedure of the light bulb-shaped lamp 11 is not limited to this, and another mounting order may be used.

  FIG. 4 shows a lighting fixture 81 that is a downlight using the bulb-shaped lamp 11. The lighting fixture 81 has a fixture main body 82, and the bulb-type lamp 11 is mounted in the fixture main body 82. And a reflector 84 for reflecting light emitted from the light bulb shaped lamp 11 downward.

  Then, when the light bulb shaped lamp 11 is attached to the socket 83 of the lighting fixture 81 and energized, the lighting circuit 19 operates, power is supplied to the plurality of LED chips of the light emitting module 16, and the plurality of LED chips are lit. Light is emitted from the light source 51, and light emitted from the surface light source 51 passes through the globe 18 and is emitted to the outside.

  The heat generated when the plurality of LED chips of the light emitting module 16 are lit is mainly conducted to the substrate 50 and from the substrate 50 to the heat radiating plate 17, and further from the heat radiating plate 17 to the housing 12. The heat is conducted and heat is radiated from the surface of the housing 12 into the air.

  According to the light bulb shaped lamp 11 of the present embodiment, the globe 18 is attached to the case 13 made of synthetic resin that can be formed with high accuracy, not the press-molded housing 12, so that the press-molded housing 12 Even if is used, there is no hindrance to the attachment of the globe 18, and the attachment position of the globe 18 can be made constant.

  Further, the globe 18 can be attached to the case 13 by causing the globe attachment portion 32 of the case 13 to penetrate the heat radiating plate 17 and protrude toward one end side.

  Positions of the globe 18 and the case 13 in the lamp axis direction and the circumferential direction can be respectively determined by the positioning protrusions 33 provided as the globe attaching portions 32.

  With the locking claw 34 provided as the globe mounting portion 32, the globe 18 and the case 13 can be locked while the globe 18 and the case 13 are positioned by the positioning protrusion 33.

  Further, the cylindrical portion 23 at one end of the housing 12 is easily deformed by an external force, but the fitting portion 66 of the globe 18 is fitted in parallel to the inside of the cylindrical portion 23 of the housing 12, so that the bulb-shaped lamp 11 Even if an impact is applied in the vicinity of the cylindrical portion 23 of the housing 12 due to a drop during handling or the like, deformation of the cylindrical portion 23 of the housing 12 can be prevented. In particular, since the fitting portion 66 of the globe 18 is formed in a cylindrical shape that is continuous in the circumferential direction without any breaks, the cylindrical portion 23 is deformed over the entire circumference of the cylindrical portion 23 of the housing 12. Can be surely prevented.

  Further, in order to bring the tapered surface 59 formed on the thickness end surface 58 of the peripheral portion of the heat radiating plate 17 on which the light emitting module 16 is mounted into surface contact with the tapered surface 22a of the tapered portion 22 of the housing 12 from the inside of the housing 12, Even if the press-molded casing 12 is formed in a shape that approximates the shape of a light bulb, good thermal conductivity from the heat radiating plate 17 to the casing 12 can be secured.

  Since the taper surface 59 of the plate thickness end surface 58 of the heat sink 17 is in surface contact with the taper surface 22a of the taper portion 22 of the housing 12, the glove mounting portion 32 of the case 13 passes through the heat sink 17 and ends at one end. In order to protrude to the side, the notch 61 can be easily provided in the peripheral part of the heat sink 17.

  Also, in the case 12 formed of metal and formed in a cylindrical shape that expands toward one end side by press molding, it is formed in a cylindrical shape that expands toward one end side along the inner surface of the case 12 A synthetic resin case 13 is arranged, and a lighting circuit board 74 arranged vertically in the case 13 along the lamp axis direction is formed in a shape in which one end side is wide along the inner surface shape of the case 13. As a result, it is possible to shorten the length of the lighting circuit board 74 in the lamp axis direction while securing a mounting area necessary for mounting the lighting circuit components on the lighting circuit board 74. As a result, the lighting circuit board 74 can be disposed in the case 13 at a position close to the base 15 side, the lighting circuit board 74 is separated from the heat sink 17, and between the lighting circuit board 74 and the heat sink 17. The necessary insulation distance L can be ensured without interposing an insulating member, so that the structure of the light bulb shaped lamp 11 can be simplified and the number of parts can be reduced.

  The inner surface of the case 13 is provided with a substrate holding part 37 into which both side portions of the lighting circuit board 74 are inserted from one end side, and a latch for locking one end of the lighting circuit board 74 inserted into the board holding part 37 Since the portion 39 is provided, the lighting circuit board 74 can be arranged and held in the case 13 at a position close to the base 15 side.

  The present embodiment can also be applied to a mini-krypton bulb-sized lamp using an E17-type base.

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

11 Bulb lamp
12 housing
13 cases
15 base
16 Light emitting module
17 Heat sink
18 Globe
19 Lighting circuit
22Tapered part as reduced diameter part
23 cylindrical part
32 Glove attachment
58 Thick end face
61 Notch
81 Lighting equipment
82 Instrument body
83 socket

Claims (3)

A metal housing that has a reduced diameter portion that is reduced in diameter from one end side to the other end side, and a cylindrical portion that is provided on one end side of the reduced diameter portion and that is parallel to the lamp shaft, and is formed into a cylindrical shape by press molding. With the body;
A synthetic resin case integrally assembled in the housing;
A light emitting module having a semiconductor light emitting element;
The light emitting module is mounted on the surface on one end side, and has an end surface portion on the peripheral portion and an other end portion formed on the other end side from the end surface portion and having a diameter reduced from the one end side to the other end side. Is a cylindrical portion of the casing, and a heat radiating plate pressed against the casing such that at least a part of the other end is in contact with the reduced diameter portion of the casing;
A base attached to the other end of the case;
A lighting circuit housed in a case;
A light bulb shaped lamp characterized by comprising: A glove that is fitted to one end of the case and attached to one end of the case,
The case is provided with a glove mounting part that penetrates the heat sink and protrudes to one end, and attaches the glove.
The light bulb shaped lamp according to claim 1, wherein a notch portion through which a globe mounting portion of the case passes is provided in a peripheral portion of the heat radiating plate. An instrument body having a socket;
The light bulb shaped lamp according to claim 1 or 2, which is attached to a socket;
The lighting fixture characterized by comprising.

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