JP5505672B2 - Light bulb shaped lamp and lighting equipment - Google Patents

Description

  The present invention relates 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 fluorescent lamp.

  Conventionally, in a light bulb-type lamp using an LED element as a semiconductor light emitting element, a light emitting module having an LED element is attached to one end of a metal base, and a glove is attached to cover the light emitting module. A base is attached to the end side, and a lighting circuit is accommodated in the base.

A light emitting module is a COB (Chip On) that directly mounts a plurality of LED elements on a substrate.
Board) module, when a metal substrate with good thermal conductivity to the base is used, an insulating layer is formed on one surface of the substrate, a wiring pattern is formed on the insulating layer, and a plurality of adhesive layers are formed by an adhesive. The LED elements are mounted, the LED elements and the wiring pattern are electrically connected by wire bonding, and the entire plurality of LED elements are covered with a sealing resin mixed with a phosphor (see, for example, Patent Document 1). ).

  Further, in order to improve the thermal conductivity from the substrate to the base of the light emitting module, the substrate is fastened to the base with a screw and fixed, and the base is brought into close contact with the base.

JP 2009-37995 A (Page 7-8, FIGS. 1-4)

  In the COB module type light emitting module, as an LED element mounting method on a substrate, an insulating layer is formed on one surface of the substrate, and a plurality of LED elements are mounted on the insulating layer with an adhesive. In order to improve the thermal conductivity from the element to the substrate and to simplify the manufacturing process of the light emitting module and to construct the light emitting module at low cost, the formation of the insulating layer is omitted, and a plurality of adhesives are applied to one surface of the metal substrate. It is conceivable to mount the LED element.

  In the case of this mounting method, the substrate is in electrical contact with the base, and a metal screw that fixes the substrate to the base is also in electrical contact with the substrate and the base. There is no problem because the insulation distance between the LED element and the wire for wire bonding is secured, but for example, when an abnormality occurs in the lighting circuit, a high voltage is applied to the LED element or the wire for wire bonding to the substrate. In the case of discharging, electricity flows through the substrate and the screw, and there is a possibility that electricity flows from the substrate and the screw to the substrate exposed to the outside.

  The present invention has been made in view of the above points, and provides a light bulb shaped lamp and a lighting fixture that can reliably prevent electricity from flowing to a base even when an abnormality occurs where electricity flows to a substrate. Objective.

The light bulb shaped lamp according to claim 1 has a base body in which a screw mounting hole is formed on one end side; a light emitting portion on which a semiconductor light emitting element is mounted on one surface of the base board and a peripheral area thereof; An arranged light emitting module; an insulator that includes an opening through which the light emitting portion of the light emitting module is exposed, and a screw insertion hole, and that positions the light emitting module by fitting at least two diagonal positions in the peripheral area of the substrate; A screw attached to the screw mounting hole of the base body through a screw insertion hole of the insulator; and a lighting circuit and a base provided on the other end side of the base body.

The light bulb shaped lamp according to claim 2 is the light bulb shaped lamp according to claim 1, wherein the substrate is a metal substrate, and an insulating material is interposed between the other surface of the substrate and the substrate. is there.

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

  The substrate is made of a metal such as aluminum, for example, and the insulating layer may not be formed on one surface on which the semiconductor light emitting element is mounted. Examples of the semiconductor light emitting element include an LED element and an EL element. For example, when the semiconductor light-emitting element is an LED element, the light-emitting unit includes a plurality of LED elements mounted on one surface of the substrate with an adhesive, and the plurality of LED elements and the terminal unit disposed on the substrate are electrically connected by wire bonding. The plurality of LED elements are entirely covered with a sealing resin mixed with a phosphor. Thereby, the light emitting module is comprised by the COB (Chip On Board) module by which a some LED element is directly mounted on a board | substrate, for example. However, the present invention is not limited to the COB, and may be an SMD (Surface Mount Device) type.

  The base body is made of a metal such as aluminum, for example, and a heat dissipation fin for improving heat dissipation may be provided on the outer peripheral surface.

  The insulating material is preferably a sheet having insulating properties, thermal conductivity and elasticity such as silicone resin and silicone rubber, but is not limited thereto. In the case of a sheet, it is possible to enhance the adhesion between the substrate and the substrate due to its elasticity.

  The screw is made of, for example, metal, has a head portion and a screw shaft portion on which a screw thread is formed, and one or a plurality of screws are used.

  The insulator may be made of, for example, a synthetic resin having insulation properties and provided to be interposed between the screw and the substrate at least at the engagement portion of the screw. A plurality of engaging portions may be formed as a single component by forming them integrally.

  Examples of the cap include those that can be connected to a socket for general lighting bulbs such as E26 type and E17 type.

  The lighting circuit has, for example, a power supply circuit that outputs constant-current DC power, and the wiring connected to the output side of the power supply circuit is drawn out to one end through the base, and the connector at the tip of the wiring is arranged on the substrate By connecting to the connected connector, power can be supplied to the semiconductor light emitting element. Although the lighting circuit is housed in the base, a part of the lighting circuit may be housed in the base.

A light bulb shaped lamp according to claim 3 is the light bulb shaped lamp according to claim 1 or 2 , further comprising a globe attached to one end side of the base so as to cover the light emitting module, and the insulator is made to emit light from the substrate. A wall portion surrounding the periphery of the portion is provided.

  The globe is made of, for example, resin or glass and has light transmittance and light diffusibility.

  For example, the wall portion is provided in an annular shape so as to surround the periphery of the light emitting portion, and the height dimension from the substrate can prevent shadows of electrical parts such as connectors and screws arranged on the substrate and the shadow of the screws from appearing on the globe. Thus, it is set as appropriate depending on the relationship between the position of the light emitting portion and the height dimension of the electrical component.

The light bulb shaped lamp according to claim 4 is the light bulb shaped lamp according to any one of claims 1 to 3 , wherein the end of the light emitting part is connected to the upper end of the wall located opposite to the end. The virtual line is set so as not to reach the head of the screw.

The light bulb shaped lamp according to claim 5 is the light bulb shaped lamp according to claim 2 , wherein the screw is attached to the screw mounting hole of the base through the screw insertion hole of the insulator, so that the substrate of the light emitting module is the base. It is attached in a state where it is in surface contact via an insulating material to the base attachment surface provided on the surface.

The lighting fixture of Claim 6 is equipped with the fixture main body; The lightbulb-shaped lamp as described in any one of Claim 1 thru | or 5 with which a fixture main body is mounted | worn.

According to the light bulb shaped lamp according to claim 1, since an insulator is interposed between the screw for fixing the substrate of the light emitting module to the base and the substrate of the light emitting module, an abnormality occurs when electricity flows through the substrate. However, it is possible to reliably prevent electricity from flowing to the base. In addition, a plurality of places can be fitted into the substrate with an insulator.

  According to the light bulb shaped lamp according to claim 2, in addition to the effect of the light bulb shaped lamp according to claim 1, electricity flows through the substrate because the insulating material is interposed between the substrate and the substrate of the light emitting module. Even when such an abnormality occurs, it is possible to reliably prevent electricity from flowing through the substrate.

  According to the light bulb shaped lamp according to claim 3, in addition to the effect of the light bulb shaped lamp according to claim 1 or 2, the insulator is provided with the wall portion surrounding the periphery of the light emitting portion of the substrate. The light from the light emitting portion in the direction along the one surface of the substrate can be shielded by the wall portion, so that the shadow of the electrical component arranged on the substrate can be prevented from being reflected on the globe, and the insulator can also be used as the light shielding body.

According to the light bulb shaped lamp according to claim 4 , in addition to the effect of the light bulb shaped lamp according to any one of claims 1 to 3 , the end portion of the light emitting portion and the wall located on the opposite side of the end portion. Since the imaginary line connecting the upper end of the part is set so as not to cover the head of the screw, it is possible to prevent the shadow of the head of the screw from occurring.

According to the light bulb shaped lamp according to claim 5 , in addition to the effect of the light bulb shaped lamp according to claim 2 , the screw is attached to the screw mounting hole of the base via the screw insertion hole of the insulator, The board | substrate of a light emitting module can be attached in the state which surface-contacted via the insulating material to the base | substrate attachment surface provided in the base | substrate.

According to the lighting fixture of Claim 6 , the lighting fixture which can obtain the effect of the lightbulb-shaped lamp of each claim can be provided.

It is a disassembled perspective view of the lightbulb-shaped lamp which shows the 1st Embodiment of this invention. It is sectional drawing of a bulb-type lamp same as the above. It is a side view of a bulb-type lamp. It is an end view of the base | substrate and light emitting module of a bulb-type lamp same as the above. It is sectional drawing of a part of light emitting module of a bulb-type lamp same as the above. It is sectional drawing of the lighting fixture using a bulb-type lamp same as the above. It is sectional drawing of the light bulb shaped lamp which shows the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 6 show a first embodiment. 1 to 4, reference numeral 11 denotes a light bulb shaped lamp. The light bulb shaped lamp 11 is a light emitting body attached to a metal base 12 and one end side of the base body 12 (one end side of the lamp shaft of the light bulb shaped lamp 11). The module unit 13, the insulating cover 14 attached to the other end of the base 12, the base 15 attached to the other end of the cover 14, and the light emitting module unit 13 are attached to one end of the base 12. A light-transmitting globe 16 and a lighting circuit 17 housed inside the cover 14 between the base 12 and the base 15 are provided.

  First, the base body 12 is integrally formed of a metal material such as aluminum having excellent thermal conductivity, and a body portion 21 that opens toward the other end side is formed in the central region, and around the body portion 21. A plurality of radiating fins 22 extending radially along the lamp axial direction are formed. The radiating fins 22 are formed so as to be inclined so that the protruding amount in the radial direction gradually increases from the other end side to the one end side of the base body 12, and approximate to the shape of a light bulb when combined with the globe 16. It is configured as follows.

  A planar attachment surface 23 to which the light emitting module unit 13 is attached is formed on the surface on one end side of the base 12. The mounting surface 23 has a plurality of positioning projections 24 for positioning an insulating sheet (to be described later) of the light emitting module unit 13, a plurality of mounting holes 25 for screwing the light emitting module unit 13, and the lighting circuit 17 and the light emitting module. A connector for electrically connecting the unit 13 side and a wiring hole 26 for passing a lead wire are formed. Further, the base 12 is formed with a through hole 27 for screwing the cover 14 disposed in the body portion 21 from the inside of the cover 14.

  On one end side of the base body 12, a hole portion 28 is formed along the lamp axis direction so as to communicate with one end side of the base body 12 and the inside of the body portion 21 that is the other end side at a position off the center of the lamp shaft. A groove 29 is formed in communication with the surface of one end of the base 12 from one end of the hole 28 toward the peripheral area of the base 12, and the lighting circuit 17 and the light emitting module unit 13 side are electrically connected by the hole 28 and the groove 29. Wiring holes 26 for passing connectors and lead wires to be connected are formed.

  In the peripheral area on one end side of the base body 12, an annular glove attachment portion 30 for attaching the globe 16 is formed to project. A locking groove 31 is formed on the inner periphery of the globe attachment portion 30 over the entire circumference at a position close to the attachment surface 23 separated from the tip of the globe attachment portion 30. Anti-rotation grooves 32 are formed along the lamp shaft direction at a plurality of circumferential locations, for example, at four locations that are equally spaced in the circumferential direction.

  Next, the light emitting module unit 13 includes a light emitting module 41, a plurality of screws 42 for fixing the light emitting module 41 to the base 12, an insulating sheet 43 as an insulating material interposed between the light emitting module 41 and the base 12, and a light emitting An insulating collar 44 is provided as an insulator disposed on the module 41 and interposed between the screw 42 and the light emitting module 41.

  The light emitting module 41 includes, for example, a rectangular substrate 47 formed of a metal material such as aluminum, and a circular light emitting portion 48 formed in the central region of the mounting surface, which is one surface on one end side of the substrate 47. Yes.

  As shown in FIG. 5, the light emitting unit 48 uses a COB (Chip On Board) system in which LED chips 49 as LED elements as a plurality of semiconductor light emitting elements are mounted on a metal surface of a substrate 47. That is, on the metal surface of the substrate 47, an adhesive 50 such as silicone resin is applied at predetermined intervals corresponding to each mounting position where a plurality of LED chips 49 are arranged in a matrix and mounted. The LED chips 49 are bonded and fixed at predetermined intervals so as to be pressed against the adhesive 50, and the adjacent LED chips 49 are electrically connected in series by wires 51 by wire bonding processing, so that the plurality of LED chips 49 are entirely connected. Is covered and sealed with a sealing resin 52 which is a transparent resin such as a silicone resin mixed with a phosphor.

  For example, an LED chip that emits blue light is used as the LED chip 49, and a phosphor that emits yellow light when mixed with part of the blue light from the LED chip 49 is mixed in the sealing resin. Therefore, the LED chip 49, the sealing resin 52, and the like constitute the light emitting portion 48, and the surface of the sealing resin 52, which is the surface of the light emitting portion 48, becomes the light emitting surface 53, and white illumination light is emitted from the light emitting surface 53. Radiated.

  A wiring pattern (not shown) is formed on the mounting surface of the substrate 47 in an insulated state with respect to the substrate 47, and each end portion of the wire 51 that connects the plurality of LED chips 49 in series is connected to the wiring pattern. At the same time, a connector 54 mounted at one corner on the substrate 47 is connected.

  Insertion holes 55 through which the screws 42 are inserted are formed at two corners located on the diagonal line where the connectors 54 are not mounted at the corners of the substrate 47. These insertion holes 55 are formed at positions that are coaxial with the mounting holes 25 of the base 12, have a larger diameter than the screw 42, and ensure an insulation distance between the screw 42 inserted through the center of the insertion hole 55 and the substrate 12. Has been.

  The screw 42 is made of metal and has a head portion 58 and a screw shaft portion 59 in which a screw thread is formed. When the light emitting module 41 is fixed to the base body 12, a washer 60 inserted through the screw shaft portion 59 is used.

  The insulating sheet 43 is a thin sheet having insulation, thermal conductivity, and elasticity, such as silicone resin or silicone rubber, and is coaxial with the mounting holes 25 of the base 12 and the insertion holes 55 of the substrate 47. An insertion hole 63 through which the screw shaft portion 59 of the screw 42 is inserted is formed at the position.

  The insulating collar 44 is made of a synthetic resin having insulation properties such as PBT resin, and has a color main body 65 that is formed in a size within the outer range of the substrate 47 and is attached to the substrate 47. ing. A circular opening 66 through which the light emitting part 48 is exposed is formed in the central area of the color body 65, and an annular wall part 67 disposed in the peripheral area on the light emitting part 48 is formed around the opening 66. Has been.

  As shown in FIG. 2, the height dimension of the wall portion 67 from the board 47 is such that the shadow of the head 54 of the connector 54 and the screw 42 arranged on the board 47 can be prevented from being reflected on the globe 16. An imaginary line a connecting the end of the light emitting unit 48 and the upper end of the wall 67 located on the opposite side is set so as not to reach the connector 54 and the head 58 of the screw 42. In FIG. 2, the imaginary line a seems to be applied to the connector 54, but this only looks like this because of the direction of the cross section, and in the cross section passing through the position of the connector 54, the imaginary line a Does not hit connector 54.

  Of the four corners of the collar body 65, a notch 68 for avoiding interference with the connector 54 is formed at one corner located on one diagonal line, and a screw 42 is engaged at the other corner located on the other diagonal line. A screw engaging portion 69 is formed.

  The screw engaging portion 69 is formed with a concave portion 70 in which the head portion 58 and the washer 60 of the screw 42 are engaged and accommodated on one side, and an insertion hole 71 through which the screw shaft portion 59 of the screw 42 is inserted is formed. Has been. On the other surface side of the screw engaging portion 69, a positioning protrusion 72 that fits into the insertion hole 55 of the substrate 47 is formed. The recesses 70, the insertion holes 71, and the positioning protrusions 72 of the screw engaging portions 69 are positioned so as to be coaxial with the mounting holes 25 of the base 12, the insertion holes 55 of the substrate 47, and the insertion holes 63 of the insulating sheet 43. Is formed.

  Moreover, the cover 14 is formed in the cylindrical shape opened toward the other end side, for example with insulating materials, such as PBT resin. An annular flange 75 that is interposed between the base 12 and the base 15 and insulates between the base 12 and the base 15 is formed on the other end side of the cover 14 at the other end side of the cover 14. A screwing portion 76 having a screw thread for screwing and attaching is formed. A wiring hole 77 for coaxially communicating with the hole portion 28 of the wiring hole 26 of the base 12 and passing the connector and the lead wire is formed on the surface on one end side of the cover 14 and the mounting hole 27 of the base 12 An insertion hole 78 is formed to be coaxially connected and screwed. On the inner peripheral surface of the cover 14, a pair of substrate mounting grooves 79 facing each other are formed along the lamp axis direction at positions offset from the center of the cover 14.

  The base 15 can be connected to a socket for general lighting bulbs such as E17 type and E26 type, and a shell 81 fixed by being screwed into a screwing portion 76 of the cover 14. It has an insulating part 82 provided on the other end side, and an eyelet 83 provided on the top of the insulating part 82.

  The globe 16 is made of a synthetic resin having light diffusibility or glass, and is formed in a hemispherical shape. The other end side of the globe 16 is opened, and a fitting portion 85 fitted to the inner peripheral side of the globe mounting portion 30 of the base 12 is formed at the opening edge portion. The fitting portion 85 is formed with a plurality of anti-rotation protrusions 86 that are fitted in the respective rotation prevention grooves 32 of the globe attachment portion 30 and is attached to the globe when the fitting portion 85 is fitted to the globe attachment portion 30. A plurality of locking claws 87 that are locked in the locking grooves 31 of the portion 30 are formed.

  The lighting circuit 17 is a circuit that supplies a constant current to the LED chip 49 of the light emitting module 41, and includes a circuit board 89 on which a plurality of circuit elements constituting the circuit are mounted. The cover 14 is inserted into the board mounting groove 79 and accommodated in the cover 14. On the input side of the lighting circuit 17, the shell 81 and the eyelet 83 of the base 15 are electrically connected by lead wires. A lead wire 91 having a connector 90 at the tip is connected to the output side of the lighting circuit 17, and the connector 90 and the lead wire 91 are pulled out to one end side of the base 12 through the wiring hole 77 of the cover 14 and the wiring hole 26 of the base 12. Thus, the connector 90 is connected to the connector 54 of the light emitting module 41. The connection operation of the connector 90 is performed before the light emitting module 41 is screwed to the base 12.

  In order to assemble the light bulb shaped lamp 11, first, the cover 14 is inserted into the body portion 21 of the base 12, and is screwed into the mounting hole 27 of the base 12 through the insertion hole 78 from the inside of the cover 14. Subsequently, the circuit board 89 of the lighting circuit 17 is inserted inside the cover 14 and the connector 90 and the lead wire 91 are pulled out to one end side of the base 12 through the wiring hole 77 of the cover 14 and the wiring hole 26 of the base. Subsequently, the base 15 is screwed into the screwing portion 76 of the cover 14, and the base 15 is fixed to the cover 14 by adhesion or caulking.

  Subsequently, the light emitting module unit 13 is attached to the base 12. That is, the insulating sheet 43 is positioned and disposed between the plurality of positioning protrusions 24 protruding from the mounting surface 23 of the base body 12, the substrate 47 of the light emitting module 41 is disposed on the insulating sheet 43, and the insulating collar 44 is disposed on the substrate 47. Each positioning projection 72 is fitted into the insertion hole 55 of the substrate 47 for positioning, and the screw shaft portion 59 of each screw 42 through the washer 60 is inserted into each recess 70 and the insertion hole 71 of the insulating collar 44 and the substrate 47. The insulating collar 44, the light emitting module 41, and the insulating sheet 43 are fixed to the base body 12 by screwing into the mounting hole 25 of the base body 12 through the through hole 55 and the through hole 63 of the insulating sheet 43, and tightening the screw 42. Further, the connector 90 and the lead wire 91 that have been drawn to one end of the base 12 in advance are drawn from the edge of the insulating sheet 43 and the substrate 47 from the portion where the end of the groove 29 of the wiring hole 26 is exposed and opened. After the light emitting module unit 13 is mounted, the connector 90 is connected to the connector 54 of the light emitting module 41. As a result, the substrate 47 of the light emitting module 41 is mounted in a state of being in close contact with the mounting surface 23 of the base 12 via the insulating sheet 43, and the center of the light emitting portion 48 of the light emitting module 41 is the center of the lamp shaft. Placed in. The order of attaching the light emitting module unit 13 to the base 12 is not limited to this, and another order of attachment may be used.

  Subsequently, an adhesive such as silicone resin or cement is applied to the inner periphery of the globe mounting portion 30 of the base 12, and each rotation stop protrusion 86 of the globe 16 is positioned in each rotation stop groove 32 of the globe attachment portion 30. By attaching 16 to the base 12, each locking claw 87 of the globe 16 is locked in the locking groove 31 of the globe mounting portion 30, and the globe 16 is fitted and fixed to the base 12. Thereby, the globe 16 is prevented from rotating with respect to the base 12 and is prevented from coming off. In this way, the glove 16 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 16 can be securely fixed to the base 12.

  FIG. 6 shows a lighting fixture 100 that is a downlight using a light bulb shaped lamp 11. The lighting fixture 100 has a fixture body 101, and a socket 102 and a reflector 103 are provided in the fixture body 101. It is arranged.

  Then, when the light bulb shaped lamp 11 is attached to the socket 102 of the lighting fixture 100 and energized, the lighting circuit 17 operates, power is supplied to the plurality of LED chips 49 of the light emitting module 41, and the plurality of LED chips 49 are The light is emitted, and this light is diffused and emitted through the globe 16.

  The heat generated when the plurality of LED chips 49 of the light emitting module 41 are lit is mainly conducted to the substrate 47 and from the substrate 47 to the base 12 via the insulating sheet 43, and the surroundings of the base 12 The heat is radiated into the air from the plurality of radiating fins 22 provided in the air.

  In the light emitting module 41, since the LED chip 49 is mounted directly on the metal substrate 47 with no adhesive layer and the adhesive 50, the heat of the LED chip 49 is efficiently heated to the substrate 47. Can conduct. Insulating sheet 43 is interposed between substrate 47 and base 12, but heat conduction can be ensured from the entire surface of substrate 47 wider than light emitting portion 48 to base 12 via insulating sheet 43, ensuring high thermal conductivity. it can.

  In addition, if an abnormality occurs in the lighting circuit 17 and a high voltage is applied to the LED chip 49 or the wire 51 of the light emitting module 41 and discharge occurs between the substrate 47, electricity may flow through the substrate 47. In this case, since the insulating sheet 43 is interposed between the substrate 47 and the base 12, and the insulating collar 44 is interposed between the screw 42 and the substrate 47 for fixing the substrate 47 to the base 12, the substrate 47 Even if electricity flows, it is possible to reliably prevent electricity from flowing to the base 12.

  Further, since the insulating collar 44 is provided with a positioning protrusion 72 that is fitted into the insertion hole 55 of the substrate 47, the positional relationship between the insulating cover 44 and the substrate 47 can be determined by combining the insulating cover 44 and the substrate 47. 42 is always arranged at the center of the insertion hole 55 of the substrate 47, and the insulation distance between the screw 42 and the substrate 47 can be ensured reliably.

  In addition, since the insulating collar 44 is provided with a wall portion 67 surrounding the light emitting portion 48 of the substrate 47, the wall portion 67 blocks light traveling from the light emitting portion 48 in a direction along one surface of the substrate 47. In addition, it is possible to prevent the shadow of the connector 54 and the screw 42 arranged on the substrate 47 from being reflected on the globe 16, and the insulating collar 44 can also be used as a light shielding body. Furthermore, the inner peripheral surface of the wall portion 67 functions as a reflecting surface, so that light can be used effectively and light distribution can be controlled.

  Next, FIG. 7 shows a second embodiment.

  The reflective surface function of the inner peripheral surface of the wall portion 67 of the insulating collar 44 is further enhanced. The reflective portion is opposed to the periphery of the light emitting portion 48 of the substrate 47 and reflects light from the light emitting portion 48. 111 is formed. The reflecting portion 111 is cylindrical, and a reflecting surface 112 that is widened toward one end side is formed on the inner peripheral surface facing the light emitting portion 48. The reflective surface 112 is subjected to, for example, aluminum deposition to ensure high reflectance characteristics.

  As described above, the insulating collar 44 is provided with the reflecting portion 111 that opposes the periphery of the light emitting portion 48 of the substrate 47 and reflects the light from the light emitting portion 48. Therefore, the illumination that is the downlight shown in FIG. When applied to the fixture 100, it is possible to perform light distribution control in which the light distribution in the direct downward direction suitable for the lighting fixture 100 is increased, and the insulating collar 44 can also be used as a reflector.

11 Bulb lamp
12 substrate
14 Cover as resin cover
15 base
16 Globe
17 Lighting circuit
23 Mounting surface as base mounting surface
24 Positioning protrusion
25 Mounting holes as screw mounting holes
41 Light emitting module
42 screws
43 Insulation sheet as insulation material
44 Insulation collar as an insulator
47 PCB
48 Light emitter
49 LED chips as semiconductor light emitting devices
52 sealing resin
58 Head as screw head
59 Screw shaft
60 washer
66 opening
67 Wall
68 Notch
70 recess
71 Insertion hole as screw insertion hole
72 positioning butt section
100 lighting fixtures
101 instrument Body

Claims (6)

A base having a screw mounting hole formed on one end side;
A light-emitting module having a light-emitting portion on which a semiconductor light-emitting element is mounted on one surface of the substrate and a peripheral area thereof, and disposed on one end side of the substrate;
An insulator having an opening through which the light emitting portion of the light emitting module is exposed and a screw insertion hole, and positioning the light emitting module by fitting at least two diagonal positions in the peripheral area of the substrate;
A screw attached to the screw mounting hole of the base through the screw insertion hole of the insulator;
A lighting circuit and a base provided on the other end of the base;
A light bulb shaped lamp characterized by comprising: The light bulb shaped lamp according to claim 1, wherein the substrate is a metal substrate, and an insulating material is interposed between the other surface of the substrate and the base body. A glove that covers the light emitting module and is attached to one end of the substrate;
The light bulb shaped lamp according to claim 1 or 2 , wherein the insulator is provided with a wall portion surrounding the periphery of the light emitting portion of the substrate. Any one of claims 1, characterized in that the imaginary line connecting the upper end of the wall portion located on the opposite side of the end portion and the end portion of the light emitting portion is set so as not to the head of the screw 3 The light bulb shaped lamp described in 1. Since the screw is attached to the screw mounting hole of the base via the screw insertion hole of the insulator, the substrate of the light emitting module is attached in a state of surface contact with the base mounting surface provided on the base via the insulating material. The light bulb shaped lamp according to claim 2 . An instrument body;
The bulb-type lamp according to any one of claims 1 to 5 , which is mounted on an instrument body;
The lighting fixture characterized by comprising.

Images