JP2012059494A - Bulb-shaped lamp and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact bulb-shaped lamp capable of using a light source module with LED elements arranged at a center area, and enabling electric connection between a lighting circuit and the light source module without forming any dark spots, as well as a lighting fixture using the bulb-shaped lamp.SOLUTION: A light source unit 13 has a light-emitting face 34 at a center area of a base body 12 with a plurality of mounting holes 27. Here, a notched part 37 is formed in the vicinity of a connector 35 on a substrate 33 of the light source unit 13, and an output lead wire led out of the lighting circuit 18 is connected to the connector 35 of the light source unit 13 through the notched part 37.

Description

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

  Conventionally, for example, there is a light bulb shaped lamp that can be replaced with a mini-krypton light bulb and uses an LED element as a light source. In this bulb-type lamp, a substrate on which an LED element is mounted is disposed on one end surface of a base, and a lighting circuit having a lighting circuit substrate on which lighting circuit components are mounted is disposed on the inside of the base.

  The substrate placed on one end surface of the base is screwed to the base with a plurality of screws, so that the substrate is in close contact with the base, and heat generated when the LED element is lit is efficiently conducted from the base to the base to dissipate heat, The temperature rise of the LED element is suppressed.

  In order to arrange the lighting circuit in the base, there is an arrangement method in which the lighting circuit board is arranged vertically in the base so that the surface of the lighting circuit board is arranged along the lamp axis direction.

JP 2010-33959 A

  However, the conventional light bulb shaped lamp has a configuration in which the LED elements are annularly arranged on the peripheral edge of the substrate. Therefore, there are cases where the light distribution is uneven or the light distribution is difficult to spread as compared with the mini-krypton light bulb size. In order to solve this problem, it may be possible to concentrate the LED elements on the center of the substrate. However, in the case of a conventional light bulb shaped lamp, the wiring from the lighting circuit is derived from the center of the substrate. Therefore, there is a possibility that the central area of the substrate becomes a dark part, and it cannot be easily configured.

  The present invention has been made in view of the above points, and a light bulb shape that enables electrical connection between a lighting circuit and a light source module without forming a dark portion in a light emitting region even when an LED element is arranged in a central region. An object of the present invention is to provide a lamp and a lighting fixture using the bulb-type lamp.

  The light bulb shaped lamp of the embodiment includes a base body having a cylindrical base portion and a plurality of locking portions provided at intervals on the inner side in the circumferential direction of the base portion. Further, a substrate, a semiconductor light emitting element provided in the central region of the substrate, a connector provided on the peripheral side of the substrate, a notch portion formed by cutting out a part of the peripheral edge of the substrate in the vicinity of the connector, And an insertion portion formed on the peripheral edge of the substrate corresponding to the locking portion of the base, and is fixed to one end of the base by inserting the locking member into the insertion portion and locking to the locking portion. A light source unit. Further, a base provided on the other end side of the base body and a lighting circuit arranged on the inner side of the base body are provided. And it has a connection part provided so that it may be derived from a lighting circuit, and connecting to a connector of a light source unit via a notch of a substrate of a light source unit.

  According to the present embodiment, since the LED element can be arranged in the central region, the light distribution is easy to be made uniform, and the lighting circuit and the light source module can be saved while saving space without forming a dark portion in the light emitting region of the light source unit. It is possible to provide a light bulb shaped lamp that can be electrically connected to each other and a lighting fixture using this light bulb shaped lamp.

It is a top view of the base | substrate, cover, and lighting circuit of the lightbulb-shaped lamp which show one Embodiment. It is sectional drawing of a bulb-type lamp same as the above. It is a perspective view of the decomposition | disassembly state of a bulb-type lamp same as the above. It is a top view of the state which removed the globe of the bulb-type lamp same as the above. It is sectional drawing of the illuminating device using a bulb-type lamp same as the above.

  Hereinafter, an embodiment will be described with reference to the drawings. 2 and 3, reference numeral 11 denotes a light bulb shaped lamp as a lighting device. The light bulb shaped lamp 11 includes a cylindrical base 12 and one end of the base 12 (a lamp connecting the globe and the base of the light bulb shaped lamp 11). A light source unit 13 attached to one end of the shaft), a lens 14 attached to the light source unit 13, a light source unit 13 and a globe 15 attached to one end side of the base 12 covering the lens 14, and disposed in the base 12 A cover 16, a base 17 attached to the other end of the cover 16 on the other end side of the base 12, and a lighting circuit 18 disposed in the cover 16. The bulb-shaped lamp 11 has a length in the lamp axial direction and an outer diameter of the maximum diameter portion of the globe 15 that is the same size as the mini-krypton bulb, and has a shape that approximates the shape of the mini-krypton bulb. .

  As shown in FIGS. 1 to 4, the base 12 is formed in a cylindrical shape whose diameter is increased from the other end side to the one end side with a metal or ceramic such as aluminum having excellent thermal conductivity and heat dissipation. The base portion 20 is provided.

  An annular attachment surface 21 to which the light source unit 13 is attached is formed on an inner peripheral portion on one end side of the base 12 so as to face one end of the base 12. A pair of lens mounting recesses 22, a cover mounting recess 23, and a wiring recess 24 are formed on the mounting surface 21 at positions symmetrical to the center of the base 12. .

  A plurality of boss portions 25 constituting a part of the mounting surface 21 are formed on the inner peripheral portion on one end side of the base 12 so as to protrude from the inner surface of the base 12. The boss portions 25 are formed with mounting holes 27 into which screws 26 for mounting the light source unit 13 are screwed. In the present embodiment, the three boss portions 25 are provided, but these boss portions 25 are not arranged at equal intervals in the circumferential direction of the base body 12, and are arranged at three locations in the circumferential direction formed by the adjacent boss portions 25. Of the intervals, only one interval L1 is arranged to be wider than the other two intervals L2. That is, one of the three angles formed by the adjacent boss portions 25 is arranged such that one angle a1 is wider than the other angle a2. Note that the distance L2 and the angle a2 at the other two locations are the same.

  A claw-like glove attachment portion 28 for attaching the globe 15 is formed on the inner peripheral portion on one end side of the base 12 so as to protrude. Of the globe mounting portion 28, portions corresponding to the respective recessed portions 22 and 24 are notched.

  The thickness of the base portion 20 excluding the boss portion 25 of the base body 12 is thinner than the thickness required for forming the mounting hole 27 for stopping the screw 26, that is, the boss portion 25 constituting the mounting hole 27 is thin. It is formed thinner than the diameter dimension. Thus, a space necessary for accommodating the lighting circuit 18 and the like is secured inside the base 12 while reducing the size of the base 12 to the mini-krypton bulb size.

  An alumite treatment or heat radiation fins may be provided on the surface of the base 12 for improving heat dissipation.

  The light source unit 13 includes a light emitting module 31 and a heat radiating plate 32.

  The light emitting module 31 includes a disk-shaped substrate (module substrate) 33 made of, for example, a metal such as aluminum or ceramics having excellent thermal conductivity, and a surface light source as a light source formed in the central region of one surface of the substrate 33 34, and a connector 35 mounted on the peripheral area of one surface of the substrate 33.

  The surface light source 34 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 the present 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 33 is employed. That is, a plurality of LED elements are mounted on the substrate 33, 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 and sealed. 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 34 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 34 becomes a light emitting surface, and white illumination light is emitted from the light emitting surface. In the present embodiment, the light emitting surface of the surface light source 34 is formed in a rectangular shape, but is not limited thereto, and may be a square, a round shape, or other shapes.

  A wiring pattern (not shown) is formed on one surface of the substrate 33, and a plurality of LED elements and a connector 35 are connected to the wiring pattern. A plurality of insertion holes 36 through which screws 26 to be screwed to the respective boss portions 25 are inserted corresponding to the positions of the respective boss portions 25 of the base body 12 are formed in the peripheral portion of the substrate 33. A notch 37 is formed corresponding to the recess 24 for wiring. The insertion hole 36 is formed by an insertion groove that opens in the outer diameter direction of the substrate 33.

  The heat plate 32 is formed of a metal such as aluminum or ceramics having excellent heat conductivity, for example, and the other surface of the substrate 33 of the light emitting module 31 is brought into contact with one surface of the heat radiating plate 32 so as to conduct heat.

  A plurality of insertion holes 38 through which screws 26 to be screwed to the respective boss portions 25 are inserted corresponding to the positions of the respective boss portions 25 of the base body 12 and the lens mounting recesses of the base body 12 are disposed in the periphery of the heat sink 32. A pair of hollow lens mounting portions 39 for mounting the lens 14 corresponding to the position of the portion 22 and a notch 40 corresponding to the wiring hollow portion 24 of the base 12 are formed. The insertion hole 38 is formed by an insertion groove that opens in the outer diameter direction of the heat radiating plate 32.

  When the heat sink 32 and the substrate 33 of the light emitting module 31 are combined, the outer shape of the substrate 33 is smaller corresponding to the position of each lens mounting portion 39 of the heat sink 32, and each lens mounting portion 39 is in the outer diameter direction than the substrate 33. It is comprised so that it may protrude and. Flat positioning surfaces 32a and 33a are formed on a part of the outer portion of the heat sink 32 and the substrate 33 of the light emitting module 31 so as to coincide with each other when they are correctly assembled to the base 12.

  The lens 14 is integrally formed of a transparent resin such as polycarbonate having a refractive index of 1.45 to 1.6, and is opposed to the surface light source 34 to control the light from the surface light source 34, and the lens body 43. A pair of attachment legs 44 for attaching the lens body 43 to the light source unit 13 is provided.

  The lens body 43 includes a hemispherical first lens portion 46 having a first concave portion 45 that opens toward one side in the optical axis direction where light from the surface light source 34 enters, that is, the other end side in the lamp axis direction. A hemispherical second lens portion 48 having a second concave portion 47 that opens toward the other side in the optical axis direction, that is, one end side in the lamp axis direction, and the lamps of these first lens portions 46 One end side in the axial direction and the other end side in the lamp axis direction of the second lens portion 48 are formed to face each other and integrated.

  The concave portions 45 and 47 of the lens portions 46 and 48 are each composed of a spheroidal surface including a perfect circle and an ellipse, and the outer surfaces of the lens portions 46 and 48 are spheroidal surfaces similar to the concave portions 45 and 47. It is configured. A groove-shaped escape portion 49 that is separated from the surface light source 34 is formed at an end portion on the other end side of the first lens portion 46 except for a portion of the pair of mounting legs 44.

  A continuous portion 50 that connects the outer surface of the first lens unit 46 and the outer surface of the second lens unit 48 is provided at a connection location between the outer surface of the first lens unit 46 and the outer surface of the second lens unit 48. Is formed. The continuous portion 50 is smoothly continuous so that the intersection of the outer surface of the first lens portion 46 and the outer surface of the second lens portion 48 does not become an acute angle, or a combination of a plane and a curved surface. It is configured.

  It should be noted that the curvature of the concave portions 45 and 47 of the lens portions 46 and 48 and the outer spheroid surface, the position of the lens portions 46 and 48 in the lamp axis direction, the shape and dimensions of the continuous portion 50, and the like are required. It is set appropriately according to the light.

  Each mounting leg 44 protrudes from the symmetrical position with respect to the center of the lens 14 to the side intersecting the lamp axis direction on the other end side in the axial direction of the first lens portion 46, and the substrate 33 of the light emitting module 31. It is attached in contact with one side. At the tip of each mounting leg 44, a substantially L-shaped locking part 51 is provided projecting toward the other end of the lamp axis direction and fitting into the outer surface of the lens mounting part 39 of the heat sink 32. A claw portion 52 that is hooked on the other surface of the heat radiating plate 32 is formed at the tip of the portion 51. The locking portions 51 of the mounting legs 44 attached to the light source unit 13 are accommodated in the lens mounting recesses 22 of the base 12. One mounting leg 44 has a wide width and two locking portions 51 are provided, while the other mounting leg 44 has a narrow width and one locking portion 51 is provided. Since the other mounting leg 44 is disposed on the side of the connector 35 of the light emitting module 31, it is formed with a narrow width to prevent interference with the connector 35.

  The lens body 43 of the lens 14 may be made of a glass material. In this case, the mounting leg 44 may be formed separately and provided with a structure for holding the lens body 43.

  The globe 15 is made of a material such as synthetic resin or glass having translucency and light diffusivity, 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 of the globe 15, a fitting portion 55 is formed so as to be fitted inside the globe attachment portion 28 of the base 12, and the fitting portion 55 is arranged inside the globe attachment portion 28. A plurality of locking claws 56 are formed to be locked to the glove mounting portion 28 in a state of being fitted to the. Further, the fitting portion 55 is formed with a pair of positioning grooves 57 that engage with the locking portions 51 of the mounting legs 44 of the lens 14 to stop the rotation of the globe 15 with respect to the base 12. A pressing portion 58 is formed in the groove 57 so as to abut against the engaging portion 51 of each mounting leg 44 of the lens 14 and press the mounting leg 44 into the light source unit 13. The outer diameter of the other end, which is the opening side of the globe 15, is formed larger than the outer diameter of the base 12.

  The cover 16 is formed in a cylindrical shape that is opened toward one end side in the lamp axis direction and closed at the other end side by an insulating material such as PBT resin. The cover 16 is formed with a cover main body 61 disposed inside the base 12 and a base attaching portion 62 protruding from the other end of the base 12.

  The cover body 61 is formed in a shape that expands toward one end side in the lamp axis direction, which is similar to the inner surface shape of the base body 12, so as to be arranged along the inner surface of the base body 12. A plurality of recesses 63 into which the bosses 25 of the base 12 are fitted are formed on the outer surface of the base member 12. The other end of the cover main body 61 is fitted into the cover mounting recess 23 of the base 12 and is positioned so as to contact the substrate 33 of the light source unit 13 and the positioning surfaces 33a and 32a of the heat sink 32 to position them. The portion 64 is formed to protrude, and the wiring guide 65 is formed to protrude. A part of the other end of the cover body 61 protrudes from the base body 12, and an annular locking portion 66 that locks to the other end of the base body 12 is formed on the outer peripheral surface of the protruding portion.

  A pair of substrate mounting grooves 67 facing each other is formed along the lamp axis direction from the cover main body 61 to the inner surface of the base mounting portion 62. The pair of substrate mounting grooves 67 is located at a position intersecting with a wide area between adjacent boss portions 25 of the base 12 and separated from a wide area between adjacent boss portions 25 of the base 12. Thus, it is formed at a position offset from the center of the cover 16. On the inner surface of the cover main body 61, a pair of substrate holding portions 68 that form the substrate mounting grooves 67 are formed.

  A pair of wiring holes 69 for connecting the cap 17 and the lighting circuit 18 with lead wires is formed on the end face of the cap mounting portion 62.

  The base 17 is connectable to a socket for a general lighting bulb of E17 type. The shell 72 is fixed by being screwed to the peripheral surface of the base mounting portion 62 of the cover 16, and the other end side of the shell 72. And an eyelet 74 provided on the top of the insulating portion 73.

  The lighting circuit 18 is a circuit that supplies a constant current to the LED elements of the light emitting module 31, and includes a lighting circuit board 77 and a plurality of lighting circuit components 78 mounted on the lighting circuit board 77. Yes.

  The lighting circuit board 77 has one surface as a mounting surface on which main lighting circuit components 78 are mounted, and the other surface as a wiring pattern surface on which wiring patterns to which the lighting circuit components 78 are electrically connected are formed.

  The lighting circuit board 77 is inserted from one end side of the cover 16, and both sides of the lighting circuit board 77 are fitted and held in the board mounting grooves 67. Accordingly, the lighting circuit board 77 is vertically arranged in the cover 16 along the lamp axis direction, the mounting surface is opposed to a wide area between the adjacent boss portions 25 of the base body 12, and the wiring pattern surface is the base body 12. So that the distance between the mounting surface and the inner surface of the cover 16 is greater than the distance between the wiring pattern surface and the inner surface of the cover 16. The substrate 12 and the cover 16 are disposed at offset positions from the center.

  On the mounting surface of the lighting circuit board 77, a plurality of lighting circuit components 78, which are discrete components having lead wires, are mounted. In these lighting circuit components 78, lead wires penetrate through the lighting circuit board 77 and are soldered to the wiring pattern on the wiring pattern surface. The lighting circuit component 78 mounted on the mounting surface of the lighting circuit board 77 includes an electrolytic capacitor of a rectifying / smoothing circuit that rectifies and smoothes an AC voltage, an inductor of a chopper circuit that converts the rectified and smoothed voltage into a predetermined voltage,

It also includes large-sized resistors such as resistors used in other circuits, and small components such as switching elements, capacitors, and diodes of other chopper circuits. Of the lighting circuit components 78 mounted on the mounting surface of the lighting circuit board 77, the larger component is disposed on one end side where the inner diameter of the cover 16 is larger, and the smaller component is disposed on the other end side where the inner diameter of the cover 16 is smaller. Is arranged. The lighting circuit component 78 mounted on the mounting surface of the lighting circuit board 77 is arranged in a wide area between the adjacent boss portions 25 of the base 12.

  On the wiring pattern surface of the lighting circuit board 77, surface mounting components of the lighting circuit components 78 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 18, input leads (not shown) are electrically connected to the shell 72 and the eyelet 74 of the base 17 through the wiring holes 69 of the cover 16. Further, an output lead wire having a connector (not shown) connected to the connector 35 of the light emitting module 31 is connected to the output side of the lighting circuit 18.

  Then, in order to assemble the bulb-shaped lamp 11, the lighting circuit 18 is inserted into the cover 16 from one end side of the cover 16, the input lead wire inserted through the wiring hole 69 of the cover 16 is connected to the base 17, The base 17 is attached to the base attaching part 62 of the cover 16.

  The cover 16 incorporating the lighting circuit 18 and the base 17 is inserted from one end side of the base 12, the other end side of the cover 16 including the base 17 is projected from the other end side of the base 12, and the locking portion 66 of the cover 16 is The base 12 is engaged with the other end to prevent it from coming off. At this time, the recesses 63 of the cover 16 are fitted in accordance with the positions of the bosses 25 of the base 12, and the positioning parts 64 and the wiring guides 65 of the cover 16 are fitted to the recesses 23 and 24 of the base 12. Fit together. As a result, the cover 16 can be positioned and fitted to the base 12, and the rotation of the cover 16 after fitting can be stopped.

  The heat sink 32 and the substrate 33 of the light emitting module 31 constituting the light source unit 13 are sequentially assembled from one end side of the base body 12 incorporating the cover 16 and the like, and arranged on the mounting surface 21. At this time, since the positioning portion 64 of the cover 16 in which the base 12 is incorporated protrudes from the mounting surface 21, the positioning portion 64 is aligned with the positioning surface 32a of the heat sink 32 and the positioning surface 33a of the substrate 33, respectively. The heat sink 32 and the substrate 33 can be positioned with respect to 12 and incorporated. As a result, the insertion holes 38 of the heat radiating plate 32 and the insertion holes 36 of the substrate 33 are arranged coaxially with the mounting holes 27 of the boss portions 25 of the base 12. Then, the screws 26 are screwed into the mounting holes 27 of the boss portions 25 through the insertion holes 36 of the substrate 33 and the insertion holes 38 of the heat sink 32, and the mounting surface 21 of the base 12, the heat sink 32, the substrate 33, Are closely attached to each other so as to conduct heat, and the light source unit 13 is fixed to the base 12.

  When the light source unit 13 is assembled into the base 12, the output lead wire of the lighting circuit 18 is connected to the surface of the light emitting module 31 through the notch 40 of the heat sink 32, the notch 37 of the substrate 33 and the wiring guide 65 of the cover 16. After being pulled out to the side and assembled in the base 12 of the light source unit 13, the connector at the tip of the lead wire is connected to the connector 35 of the light emitting module 31.

  The locking portions 51 of the mounting legs 44 of the lens 14 are inserted into the lens mounting portions 39 of the heat radiating plate 32 of the light source unit 13 through the lens mounting recesses 22 of the base 12, and the claw portions 52 of the locking portions 51 are inserted. Hang on the other side of the heat sink 32. Thereby, the engaging portions 51 of the mounting legs 44 of the lens 14 are fitted into the lens mounting portions 39 of the heat sink 32, and the position of the lens 14 in the direction parallel to the surfaces of the substrate 33 and the heat sink 32 can be positioned. At the same time, the substrate 33 and the heat sink 32 are sandwiched between the mounting leg 44 and the claw portion 52, and the position of the lens 14 with respect to the direction perpendicular to the surface of the substrate 33 and the heat sink 32 can be positioned. Accurate positioning can be maintained. Each mounting leg 44 of the lens 14 may be bonded and fixed to the light source unit 13 or the base 12 by applying or filling an adhesive such as silicone resin or cement into each recess 22 for mounting the lens of the base 12. As the adhesive, an adhesive used for attaching the globe 15 to the base 12 may be used.

  An adhesive such as silicone resin or cement is applied to the inner periphery of the globe mounting portion 28 of the base 12, and the positioning grooves 57 of the globe 15 are positioned at the locking portions 51 of the mounting legs 44 of the lens 14 to fix the globe 15. By attaching to the base body 12, each locking claw 56 of the globe 15 is locked to the globe mounting portion 28, and the globe 15 is fitted and fixed to the base body 12. In this way, the glove 15 is fixed to the base 12 using a fitting locking structure, so when using an adhesive, the amount of adhesive used can be reduced compared to the conventional method, or using an adhesive together. Without this, the globe 15 can be securely fixed to the base 12. Further, by attaching the globe 15 to the base body 12, the holding portion 58 of the globe 15 comes into contact with the locking portion 51 of each attachment leg 44 of the lens 14, and each attachment leg 44 is pressed into the light source unit 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. 5 shows a lighting fixture 81 that is a downlight using the bulb-shaped lamp 11, and the lighting fixture 81 has a fixture main body 82, and the bulb-shaped lamp 11 is inserted into the fixture main body 82. A socket 83 to be mounted in a state where the axis is obliquely lateral and a reflector 84 that reflects light emitted from the light bulb shaped lamp 11 downward are provided. In FIG. 5, reference numeral 85 denotes a terminal block.

  Then, when the light bulb shaped lamp 11 is attached to the socket 83 of the lighting fixture 81 and energized, the lighting circuit 18 operates, power is supplied to the plurality of LED chips of the light emitting module 31, and the plurality of LED chips are lit. Light is emitted from the light source 34, light emitted from the surface light source 34 enters the lens 14, and light whose light distribution is controlled by the lens 14 is emitted to the outside through the globe 15.

  The heat generated when the plurality of LED chips of the light emitting module 31 is lit is mainly conducted to the substrate 33 and from the substrate 33 to the heat radiating plate 32, and further from the heat radiating plate 32 to the base body 12. Conducted and dissipated from the surface of the substrate 12 into the air.

  Then, according to the light bulb shaped lamp 11 of the present embodiment, the base 12 is provided with the boss part 25 and the attachment hole 27 which are a plurality of locking parts, and the attachment hole 27 of the boss part 25 and the insertion hole 36 of the light emitting module 31. Thus, the light emitting module 31 can be screwed. Since the light emitting module 34 has the surface light source 34 formed in the central region, it can be a light bulb shaped lamp with less unevenness in light distribution. In addition, since the surface light source 34 can be used, the light distribution angle is likely to be widened because the light of the surface light source 34 is irradiated from the bottom of the globe 15 formed in the dome shape and near the center. it can.

  Further, a connector 35 provided on the peripheral side of the substrate 33 of the light emitting module 31 and a notch 37 formed by cutting out a part of the periphery of the substrate 33 in the vicinity of the connector 35 are provided via the notch 37. Since the output lead wire from the lighting circuit 18 is electrically connected to the connector 35, a hole for inserting an electric wire is formed in the center of the substrate 33 even in a light emitting module having a surface light source 34 that is a light emitting region in the central region. Electric power can be supplied from the lighting lamp circuit 18 to the light emitting module 31 without being formed. Therefore, a dark portion is not formed in the light emitting region of the light emitting module 31, and the light emitting module 31 as in the present embodiment can be adopted even with the small base 12.

  In addition, one of the intervals between the adjacent boss portions 25 of the base 12 is set wider than the interval of the other locations, and the lighting circuit board 77 of the lighting circuit 18 is formed vertically along the lamp axis direction inside the base 12. In addition to arranging the lighting circuit component 78 mounted on the lighting circuit board 77 with the one surface of the lighting circuit board 77 opposed between the bosses 25 having a wide interval between the base bodies 12, the light source unit 13 is mounted on the base body 12. It can be expected that the diameter of the substrate 12 can be reduced while enabling the screwing and the placement of the lighting circuit 18 in the substrate 12.

  Further, the lighting circuit board 77 is formed so that the distance between the mounting surface as one surface and the inner surfaces of the substrate 12 and the cover 16 is larger than the distance between the wiring pattern surface as the other surface and the inner surfaces of the substrate 12 and the cover 16. Since the lighting circuit board 77 can be efficiently housed and disposed in the base 12 and the cover 16, the diameter of the base 12 and the cover 16 can be reduced.

  Since the output lead wire to the connector 35 of the light emitting module 31 is led out from the mounting surface side, excess wiring of the output lead wire electrically connected to the connector 35 is stored in a wide space area. be able to. Accordingly, it is possible to make it difficult to apply excessive tension or stress to the output lead wire, and it is possible to effectively prevent problems such as disconnection of the output lead wire. It is preferable that the wiring length of the output lead wire can be secured relatively long in relation to the distance from the connector 31. If the length of the output lead wire is set to be minimal or short in relation to the distance, the base 12, the cover 16, and the light source having different thermal expansion coefficients due to the influence of heat when the bulb lamp 11 is turned on. Depending on the contraction of the substrate 33 and the like of the module 31, tension may act on the output lead wire, causing problems such as disconnection. Therefore, it is preferable to secure a relatively long output lead wire even after being connected to the connector 35 as in the present embodiment. The fact that it can be stowed can improve work efficiency as well as preventing problems.

  The light source unit 13 may not include the heat radiating plate 32 as long as it includes only the substrate 33.

  Further, the number of the boss portions 25 of the base body 12 is not limited to three, and may be two or four or more. In any case, one of the intervals between the adjacent boss portions 25 is set to the other portion. It may be provided wider than the interval.

  The present embodiment can also be applied to a light bulb shaped lamp using an E26 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.

  1 ... bulb-shaped lamp, 12 ... base, 13 light source unit, 17 ... cap, 18 ... lighting circuit, 81 ... lighting fixture, 82 ... equipment body, 83 ... socket

Claims (3)

A base body having a cylindrical base body, and a plurality of engaging portions provided at intervals on the inner side in the circumferential direction of the base body part;
A substrate, a semiconductor light emitting element provided in a central region of the substrate, a connector provided on a peripheral side of the substrate, a cutout portion formed by cutting out a part of the peripheral edge of the substrate in the vicinity of the connector, A light source that is fixed to one end of the substrate by inserting a locking member into the insertion portion and engaging with the engagement portion. With units;
A base provided on the other end of the substrate;
A lighting circuit arranged inside the substrate;
A connecting portion provided so as to be derived from the lighting circuit and connected to the connector of the light source unit through the notch portion of the substrate of the light source unit;
A light bulb shaped lamp characterized by comprising: The plurality of locking portions of the base are provided such that one of the intervals between the adjacent locking portions is wider than the interval between the other locations.
The lighting circuit includes a lighting circuit board and a lighting circuit component mounted on one surface of the lighting circuit board, and is arranged vertically along the lamp axis direction on the inner side of the base body, and a locking portion having a wide interval between the base bodies The lighting circuit components are arranged with one surface of the lighting circuit board facing between them,
The lighting circuit board is disposed at a position offset from the center of the base so that the distance between one surface and the inner surface of the base is wider than the distance between the other side and the inner surface of the base.
2. The light bulb shaped lamp according to claim 1, wherein the connecting portion is configured to be led out from the lighting circuit board surface on one side by wiring. An instrument body having a socket;
A light bulb shaped lamp as claimed in any one of claims 1 to 3 mounted in a socket;
The lighting fixture characterized by comprising.

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