JP2016134292A - Lamp device and illuminating device - Google Patents

Abstract

A lamp device capable of ensuring heat dissipation of a light emitting module is provided. A lamp device 11 includes a light emitting module 23, a heat radiator 21, and a reflector 24. The light emitting module 23 includes a flexible wiring board 61 and a light emitting element 62 mounted on the flexible wiring board 61. The heat radiating body 21 is provided with a flexible wiring board 61. The reflector 24 is provided with an opening 68 through which the flexible wiring substrate 61 and the light emitting element 62 are exposed, and has a pressing portion 70 that protrudes into the opening 68 and presses the flexible wiring substrate 61 against the radiator 21. [Selection] Figure 1

Description

  Embodiments described herein relate generally to a lamp device using a light emitting module and an illumination device using the lamp device.

  Conventionally, for example, flat lamp devices such as a GH76p type base and a GX53 type base have been proposed. In this lamp device, a light emitting module in which a light emitting element is mounted on a substrate is used. The substrate of the light emitting module is disposed on the heat radiating body, and heat generated by the light emitting element is transmitted from the substrate to the heat radiating body, thereby suppressing the temperature rise of the light emitting element. Therefore, the adhesion between the substrate and the heat radiating body tends to affect the heat transfer from the substrate to the heat radiating body, and it is necessary to improve the adhesion between the substrate and the heat radiating body to ensure the heat dissipation of the light emitting module.

JP2013-73696A

  The problem to be solved by the present invention is to provide a lamp device and an illuminating device that can ensure heat dissipation of the light emitting module.

  The lamp device of the embodiment includes a light emitting module, a heat radiator, and a reflector. The light emitting module includes a flexible wiring board and a light emitting element mounted on the flexible wiring board. A flexible wiring board is disposed on the radiator. The reflector is provided with an opening through which the flexible wiring substrate and the light emitting element are exposed, and has a pressing portion that protrudes into the opening and presses the flexible wiring substrate against the radiator.

  According to this invention, even if it uses a flexible wiring board for a light emitting module, a flexible wiring board can be pressed against a heat radiator, and it can be anticipated that the heat dissipation of a light emitting module is ensured.

It is a perspective view of the lamp device which shows a 1st embodiment. It is a front view of a lamp device same as the above. It is sectional drawing of a lamp device same as the above. It is a perspective view of the decomposition | disassembly state of a lamp device same as the above. It is a perspective view of the decomposition | disassembly state of a part of lamp apparatus same as the above. It is sectional drawing of the illuminating device using a lamp device same as the above. It is a front view of the lamp device which shows 2nd Embodiment. It is a perspective view of the lamp device which shows 3rd Embodiment.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 6.

  As shown in FIG. 6, the illumination device 10 is an embedded illumination device such as a downlight. The illumination device 10 includes a flat lamp device 11 and an appliance device 12 on which the lamp device 11 is detachably mounted.

  As shown in FIGS. 1 to 6, the lamp device 11 includes a housing 20, a radiator 21, a mounting base 22, a light emitting module 23, a reflector 24, a lighting circuit 25, and a translucent cover 26 (shown in FIG. 6). Etc. In the following description, the front side that is the light irradiation direction of the lamp device 11 is the lower side, and the rear side that is opposite to the light irradiation direction is the upper side. Further, in FIG. 1 to FIG. 5, illustration of the translucent cover 26 is omitted.

  The casing 20 is formed in a cylindrical shape with an insulating material such as synthetic resin. The housing 20 has an outer peripheral portion 28, an opening 29 on the lower side of the outer peripheral portion 28, and a closing portion 30 on the upper side of the outer peripheral portion 28. At the center of the closing portion 30, a cylindrical tube portion 32 that forms an insertion port 31 that opens in the up-down direction protrudes from the housing 20. Between the peripheral part of the blocking part 30 and the insertion port 31, an annular projecting part 33 to which the radiator 21 is attached projects upward. On the outer peripheral portion 28 and the cylindrical portion 32, a holding portion 34 for positioning and holding the lighting circuit 25 (circuit board 78) inserted from the opening 29 is formed. A plurality of protrusions 35 for positioning the reflector 24 inserted from the opening 29 are formed on the outer peripheral portion 28.

  Further, the heat radiating body 21 is integrally formed of a metal material such as aluminum die casting. The radiator 21 includes a columnar support portion 37, a light emitting module connection portion 38 formed below the support portion 37, and an external heat dissipation portion 39 formed above the support portion 37.

  A cylindrical portion 40 that can be inserted into the cylindrical portion 32 is formed on the lower side of the support portion 37, and a small-diameter insertion portion 41 is formed on the lower side of the cylindrical portion 40. On the upper side of the support portion 37, a tapered portion 42 whose cross-sectional area increases toward the upper external heat radiating portion 39 is formed, and the inclination angle of the tapered portion 42 is set to 45 °, for example.

  The light emitting module connection portion 38 is a circular contact surface formed in a flat shape on the tip surface of the support portion 37, and the area of the contact surface is smaller than the cross-sectional area of the support portion 37 and smaller than the area of the external heat dissipation portion 39. .

  The external heat radiating part 39 is formed in a disk shape having a larger diameter than the support part 37 and the light emitting module connecting part 38, and the peripheral part is arranged on the protruding part 33 in a state of protruding in the outer diameter direction from the protruding part 33. Yes. A plurality of key grooves 44 and a plurality of keys 45 are respectively disposed at predetermined positions around the external heat radiating portion 39. A heat conductive sheet 46 is attached to the upper surface of the external heat radiating portion 39.

  A plurality of bosses 47 for screwing the mounting base 22 are provided around the support portion 37, and a plurality of bosses 48 for screwing to the housing 20 are provided around the external heat radiation portion 39. Yes. The casing 20 and the radiator 21 are fixed by screwing a plurality of screws 49 into the plurality of bosses 48 of the radiator 21 from the inside of the casing 20.

  The upper part including the projecting part 33 of the housing 20 and the external heat radiating part 39 of the heat radiating body 21 constitute a base part 50 having a predetermined standard size corresponding to, for example, a GH76p type base.

  Further, the mounting base 22 is formed of an insulating material such as synthetic resin. A hole 52 into which the insertion portion 41 of the heat radiating body 21 is inserted is formed in the center of the mounting base 22. A plurality of mounting holes 53 for screwing to the boss 47 of the radiator 21 and a plurality of bosses 54 for screwing the reflector 24 are formed on the periphery of the mounting base 22. Yes.

  On the lower surface of the mounting base 22, a planar mounting surface 55 for arranging the peripheral portion of the light emitting module 23 is formed. A positioning portion 56 for positioning the light emitting module 23 projects from the periphery of the mounting surface 55. A wiring guide 58 having a wiring hole 57 that opens in the front-rear direction is formed on the side of the mounting base 22. Further, on the upper surface of the mounting base 22, a sandwiching portion 59 that projects and holds the lighting circuit 25 (circuit board 78) between the housing 20 and the retaining portion 34 is provided.

  The mounting base 22 has a plurality of screws from the mounting hole 53 to the plurality of the radiators 21 in a state where the insertion part 41 of the radiator 21 is inserted into the hole 52 and arranged around the light emitting module connection part 38. By being screwed to the boss 47, the heat radiating body 21 is fixed. In a state where the mounting base 22 is fixed to the radiator 21, the light emitting module connection portion 38 is flush with the mounting surface 55 of the mounting base 22 or slightly protrudes.

  The light emitting module 23 includes a flexible wiring board 61 and a plurality of light emitting elements 62 mounted on the flexible wiring board 61.

  The flexible wiring board 61 is configured by laminating a film-like insulating material and a pattern-like wiring. A part of the wiring is exposed from the insulating material on the front surface of the flexible wiring board 61 corresponding to the mounting position of the light emitting element 62, and the light emitting element 62 is mounted on the wiring. A connecting portion 63 is extended from the side portion of the flexible wiring board 61. A wiring is passed through the connecting portion 63, and a connector electrically connected to the wiring is provided at the tip of the connecting portion 63.

  For the light emitting element 62, for example, an SMD (Surface Mount Device) package including an LED chip is used. The light emitting elements 62 are arranged on the flexible wiring board 61 in a predetermined arrangement. That is, a plurality of light emitting elements 62 are arranged in the center of the flexible wiring board 61, and a plurality of light emitting elements 62 are arranged in a peripheral portion surrounding the central light emitting element 62. A plurality of space areas 64 in which the light emitting elements 62 are not arranged are formed radially with respect to the center of the flexible wiring board 61 in the peripheral portion surrounding the central light emitting element 62, and the light emitting elements 62 are arranged between the space areas 64. .

  The back surface side of the flexible wiring board 61 of the light emitting module 23 is disposed so as to be in contact with the light emitting module connecting portion 38 and the mounting base 22 through an insulating sheet 65 that is also a heat conductive sheet. All the light emitting elements 62 are arranged in the region of the light emitting module connecting portion 38.

  The insulating sheet 65 has thermal conductivity and insulating properties and has elasticity, and is formed to be larger than the light emitting module connecting portion 38. When the insulating sheet 65 is sandwiched between the light emitting module connecting portion 38 and the mounting base 22 and the flexible wiring board 61, even if there is a step between the light emitting module connecting portion 38 and the mounting base 22, the step is insulated. It absorbs by the difference of the compression amount of 65, and relieves the stress applied to the light emitting module 23.

  In addition, the reflector 24 is formed of an insulating material such as synthetic resin. In the center of the reflector 24, an opening 68 is formed which is smaller than the outer shape of the flexible wiring board 61 but exposes the flexible wiring board 61 and the light emitting element 62. The reflector 24 is formed with a reflection surface 69 that expands downward from the periphery of the opening 68 to the periphery of the reflector 24.

  The reflector 24 is provided with a plurality of pressing portions 70 that protrude into the opening 68 and press the flexible wiring board 61 against the heat radiator 21. The pressing portion 70 has a plate shape and protrudes from the reflecting surface 69 and protrudes into the opening 68 toward the center of the opening 68. The pressing portion 70 protrudes from the plurality of locations of the opening 68 into the opening 68 and is provided radially with respect to the center of the opening 68. Each of the pressing portions 70 protrudes independently into the opening 68, and the tip of each pressing portion 70 is separated. On the upper surface side of the pressing portion 70, a planar contact surface 71a that presses the flexible wiring board 61 against the radiator 21 is formed. An edge portion 71b on the lower surface side of the pressing portion 70 and opposite to the contact surface 71a is formed in an inclined shape from the reflecting surface 69 side toward the opening 68. The pressing unit 70 contacts the flexible wiring board 61 through the space region 64 where the light emitting element 62 is not disposed, and presses the flexible wiring board 61 against the heat radiating body 21. In the present embodiment, the opening 68 is a quadrangle, and the pressing part 70 shows eight examples.

  A plurality of positioning portions 72 for positioning the peripheral portion of the flexible wiring board 61 are provided on the upper surface of the reflector 24 around the opening 68, and the surrounding portion surrounding the mounting base 22 and the light emitting module 23 73 is provided.

  A plurality of support pieces 74 that are fitted into and supported by the protrusions 35 of the housing 20 are provided around the reflector 24. A plurality of mounting holes 75 for screwing the reflector 24 to the boss 54 of the mounting base 22 are formed in the reflecting surface 69.

  Then, the flexible wiring board 61 is held in a state of being pressed toward the light emitting module connecting portion 38 of the radiator 21 by screwing and tightening a screw that passes through the mounting hole 75 to the boss 54 of the mounting base 22.

  The lighting circuit 25 is, for example, a lighting circuit that rectifies and smoothes commercial AC power and converts it to DC power, and a DC / DC converter that supplies the DC power to the LED element as a predetermined DC output by switching of the switching element. And a control IC for controlling the oscillation of the switching element. The dimming lighting circuit 25 has a function of detecting the current of the light emitting element 62 and comparing it with a reference value corresponding to the dimming signal, and controlling the switching operation of the switching element by the control IC.

  The lighting circuit 25 includes a circuit board 78 and a circuit component 79 that is a plurality of electronic components mounted on the circuit board 78.

  The circuit board 78 is formed in an annular shape, and a circular fitting hole 80 through which the cylindrical part 32 of the housing 20 is inserted is formed at the center of the circuit board 78. The lower surface of the circuit board 78 is a mounting surface 78a for mounting the lead component having the lead wire of the circuit component 79, and the upper surface is connected to the lead wire of the lead component by soldering and the surface mounting component of the circuit component 79 is mounted. This is a wiring surface 78b as a wiring pattern surface or a solder surface on which a wiring pattern to be mounted is formed. Further, a connector to which a connector provided at the connection portion 63 of the light emitting module 23 is connected is mounted on the mounting surface 78a of the circuit board 78.

  The circuit board 78 is disposed at an upper position in the housing 20 with the wiring surface 78b facing upward and facing the closing portion 30 of the housing 20. The circuit component 79 mounted on the mounting surface 78a of the circuit board 78 is disposed between the outer peripheral portion 28 and the cylindrical portion 32 of the housing 20, the mounting base 22, and the reflector 24.

  The AC power input side of the circuit board 78 is electrically connected to a pair of power supply lamp pins 81, and the DC output side is electrically connected to the light emitting module 23. A pair of lamp pins 81 for power supply protrudes vertically from the closing portion 30 of the housing 20. When the lighting circuit 25 is dimmable, a plurality of lamp pins for dimming are projected vertically from the closing portion 30 of the housing 20 in addition to the power supply.

  In addition, the translucent cover 26 is formed in a disk shape with, for example, a translucent synthetic resin, and is attached to the housing 20 so as to cover the opening 29. A Fresnel lens 84 for controlling light emitted from the lamp device 11 to a predetermined light distribution is formed on the inner surface (upper surface) of the translucent cover 26 facing the light emitting module 23. The Fresnel lens 84 has a saw-like cross-sectional shape in the radial direction and is formed concentrically. On the periphery of the lower surface of the translucent cover 26, a finger hooking portion 85 is provided for facilitating the turning operation of the lamp device 11 that is attached to and detached from the fixture device 12 (socket 93). Note that the inner surface of the translucent cover 26 does not need to be provided with the Fresnel lens 84 and may be provided with a diffusion surface for diffusing light.

  Next, as shown in FIG. 6, the instrument device 12 includes an instrument reflector 91 that is expanded and opened downward, an instrument radiator 92 as an instrument body attached to the upper part of the instrument reflector 91, A socket 93 attached to the lower part of the appliance radiator 92, a terminal block 95 attached to the upper portion of the appliance radiator 92 by a mounting plate 94, and a plurality of mounting springs for ceiling mounting attached to the periphery of the appliance radiator 92 Etc.

  The instrument reflector 91 is formed in a cylindrical shape that expands downward.

  The instrument radiator 92 is formed of a material such as a metal such as aluminum die casting, ceramics, or a resin having excellent heat dissipation. The appliance radiator 92 has a disk-shaped base portion 97 and a plurality of heat radiation fins 98 protruding from the upper surface of the base portion 97. On the lower surface of the base 97, a planar contact surface 99 exposed in the instrument reflector 91 is formed.

  The socket 93 includes a socket body 101 made of an insulating synthetic resin and formed in an annular shape, and a pair of terminals for power supply (not shown) disposed on the socket body 101. In the case of dimming support, a plurality of dimming terminals are also provided.

  In the center of the socket main body 101, a circular insertion hole 102 through which the cap part 50 (projecting part 33) of the lamp device 11 is inserted is formed. On the lower surface of the socket body 101, a plurality of connection holes into which the lamp pins 81 of the lamp device 11 are inserted are formed in an elongated shape along the circumferential direction. A terminal is disposed above each connection hole, and the lamp pin 81 of the lamp device 11 inserted into the connection hole is electrically connected to the terminal.

  A plurality of keys protrude from the inner peripheral surface of the socket body 101, and a plurality of substantially L-shaped key grooves are formed. The key and keyway of the socket 93 and the keyway 44 and key 45 of the lamp device 11 are provided at corresponding positions. The key device 45 of the lamp device 11 is inserted into the socket 93 with the key 45 and the key groove 44 of the lamp device 11 aligned with the key groove and key of the socket 93, and the lamp device 11 is rotated by rotating the lamp device 11. The socket 93 can be detachably attached.

  The socket 93 is supported by the appliance radiator 92 by a support mechanism. In this support mechanism, when the base part 50 of the lamp device 11 is attached to the socket 93, the upper surface of the base part 50, that is, the external heat radiating part 39 of the heat radiating body 21 is pressed against the contact surface 99 of the appliance heat radiating body 92 to generate heat. It is configured to enhance conductivity.

  The terminal block 95 is electrically connected to the terminals of the socket 93.

  Then, in the lighting device 10 configured by the lamp device 11 and the fixture device 12 in this way, in order to attach the lamp device 11 to the fixture device 12, the key 45 and the key groove 44 of the base portion 50 are connected to the key of the socket 93. The base part 50 is inserted into the socket 93 in accordance with the groove and the key, and the lamp device 11 is rotated by a predetermined angle with respect to the socket 93, whereby the key 45 of the base part 50 is locked in the key groove of the socket 93, The lamp device 11 can be attached to the socket 93. Thereby, the lamp pin 81 of the base part 50 is electrically connected to each terminal of the socket 93, and the upper surface of the base part 50, that is, the external heat radiating part 39 of the heat radiating body 21 is connected to the appliance heat radiating body 92 via the heat conductive sheet 46. The heat sink 21 is pressed against and brought into close contact with the contact surface 99 so that heat can be efficiently conducted from the radiator 21 to the appliance radiator 92.

  When the lamp device 11 is lit, commercial AC power is supplied to the lighting circuit 25 of the lamp device 11, and the commercial AC power is converted into predetermined DC power by the lighting circuit 25 and supplied to the light emitting element 62 of the light emitting module 23. Then, the light emitting element 62 is turned on. The light of the light-emitting element 62 that has been turned on passes through the light-transmitting cover 26 and is irradiated in a predetermined irradiation direction.

  In addition, when the lamp device 11 is turned on, heat generated by the light emitting element 62 of the light emitting module 23 is mainly conducted from the flexible wiring board 61 to the light emitting module connecting portion 38 of the radiator 21 via the insulating sheet 65. Further, heat is conducted from the external heat radiating portion 39 of the heat radiating body 21 to the equipment heat radiating body 92 via the heat conductive sheet 46, and is radiated from the plurality of radiating fins 98 of the equipment heat radiating body 92 into the air.

  At this time, since the flexible wiring board 61 that is thin and has low thermal resistance is used for the substrate of the light emitting module 23, the heat generated by the light emitting element 62 is efficiently transferred from the flexible wiring board 61 to the light emitting module connecting portion 38 of the radiator 21. Can conduct heat well.

  Further, when the flexible wiring board 61 is used, for example, by simply pressing the peripheral area of the flexible wiring board 61 to the light emitting module connection part 38 of the radiator 21, the inner side where the light emitting element 62 of the flexible wiring board 61 is mounted is mounted. Sufficient adhesion between the area and the light emitting module connecting portion 38 of the radiator 21 cannot be obtained, and the heat dissipation from the flexible wiring board 61 to the light emitting module connecting portion 38 of the radiator 21 may be reduced. In the present embodiment, a plurality of pressing portions 70 are projected into the opening 68 of the reflector 24, and the inner region where the light emitting element 62 of the flexible wiring board 61 is mounted by the pressing portions 70 is defined as the light emitting module of the radiator 21. Since it can be uniformly pressed against the connection part 38, the adhesion between the flexible wiring board 61 and the light emitting module connection part 38 of the radiator 21 is ensured, and the heat generated by the light emitting element 62 is transferred from the flexible wiring board 61 to the radiator 21. It is possible to efficiently conduct heat to the light emitting module connecting portion 38.

  Further, since the pressing portion 70 is provided radially with respect to the center of the opening 68, even if the pressing portion 70 protrudes into the opening 68 and is disposed between the light emitting elements 62, the light distribution characteristic Can be less affected.

  Further, since the pressing portions 70 are independently projected into the openings 68 and the tips of the pressing portions 70 are separated from each other, the light emitting element is formed at the center of the opening 68 between the tips of the pressing portions 70. 62 can be arranged to improve the light output.

  In addition, when the lamp device 11 is turned on, heat generated by the lighting circuit 25 is transmitted to the casing 20 and the like, and is radiated from the surface of the casing 20 and the like to the air.

  According to the lamp device 11 of the present embodiment, the heat generated by the light emitting element 62 can be efficiently conducted to the radiator 21 by using the flexible wiring board 61, and the flexible wiring board 61 is attached to the radiator 21 by the pressing portion 70. The thermal conductivity from the flexible wiring board 61 to the heat radiating body 21 can be ensured by pressing to the heat radiation element 62, and the heat radiation performance of the light emitting element 62 can be improved.

  Further, the flexible wiring board 61 can be positioned on the mounting base 22 by the positioning portion 56 of the mounting base 22. Since the reflector 24 is fixed to the mounting base 22, the flexible wiring board 61 and the pressing portion 70 of the reflector 24 can be positioned, and the positional deviation between the light emitting element 62 and the pressing portion 70 of the flexible wiring board 61 can be adjusted. This can be prevented and the assemblability can be improved.

  Next, FIG. 7 shows a second embodiment. In addition, about the same structure as 1st Embodiment, the same code | symbol is used and the description about the structure and effect is abbreviate | omitted.

  This is an example in which the number of pressing portions 70 of the reflector 24 is six. In this case, the mounting area of the flexible wiring board 61 on which the light emitting element 62 can be mounted without interfering with the pressing part 70 is increased as compared with the case where the number of the pressing parts 70 shown in FIG. The light output can be improved by increasing the number.

  Note that the number of pressing portions 70 of the reflector 24 is not limited to eight or six, and an arbitrary number may be selected.

  Next, FIG. 8 shows a third embodiment. In addition, about the same structure as 1st Embodiment, the same code | symbol is used and the description about the structure and effect is abbreviate | omitted.

  The height of the pressing portion 70 protruding from the flexible wiring board 61 is formed higher than that in the first embodiment. In the first embodiment, the edge portion 71b of the pressing portion 70 is formed to be inclined toward the inside of the opening, but in the third embodiment, the edge portion 71b of the pressing portion 70 is the tip of the pressing portion 70. Except for the side, it is provided substantially parallel to the flexible wiring board 61.

  The pressing unit 70 configured in this way functions as a louver, and can reduce the occurrence of glare when the lamp device 11 is viewed from an oblique direction.

  Even if the height of the pressing portion 70 protruding from the flexible wiring board 61 is high, the pressing portion 70 is arranged in a radial manner, so that the light distribution characteristic is not affected.

  The lamp device may not be provided with a lighting circuit, and DC power may be supplied to the lamp device from a lighting circuit arranged outside the lamp device.

  The configuration of the present embodiment can also be applied to a lamp device using a GX53 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.

10 Lighting equipment
11 Lamp device
21 radiator
23 Light emitting module
24 Reflector
61 Flexible wiring board
62 Light emitting device
68 opening
70 Pushing part
92 Appliance radiator as appliance body
93 socket

Claims (4)

A flexible wiring board, and a light emitting module having a light emitting element mounted on the flexible wiring board;
A radiator for disposing the flexible wiring board;
A reflector having an opening through which the flexible wiring substrate and the light emitting element are exposed, and a pressing portion that protrudes into the opening and presses the flexible wiring substrate against the radiator;
A lamp device comprising: The lamp device according to claim 1, wherein the pressing portion is provided radially with respect to a center of the opening. The lamp device according to claim 1, wherein the pressing portion protrudes independently from the plurality of locations of the opening into the opening. A lamp device according to any one of claims 1 to 3;
An instrument body having a socket to which the lamp device is mounted;
An illumination device comprising:

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