JP2014071992A - Lamp device and lighting fixture - Google Patents

Abstract

The present invention provides a lighting apparatus that has good heat dissipation, reduces the number of parts, and is easy to assemble.
A lamp device (12) includes a substrate body (20), a light source unit (15) is mounted on the substrate body (20), and a contact point (23) electrically connected to the light source unit (15) is disposed. The cover 18 accommodates the light source unit 15 in a space S1 formed with the substrate body 20, has a light transmitting property at least at a position facing the light source unit 15, and engages with the socket side engaging unit 42. Has a stop.
[Selection] Figure 1

Description

  Embodiments of the present invention relate to a lighting fixture in which a fixture body includes a radiator that has a connection portion to which a lamp contacts and is thermally connected.

  2. Description of the Related Art Conventionally, for example, there is a lamp using a GH76P type base as a flat lamp used in a lighting device such as a downlight that is embedded in an installation surface such as a ceiling. The lamp includes a light emitting module substrate having an LED element which is a semiconductor light emitting element as a light source, a casing having a light transmitting property in a lower part facing the light emitting module substrate and accommodating the light emitting module substrate. It has a base provided with a pair of lamp pins provided on the upper side, and a heat dissipating sheet disposed on the base. In this lamp, the lamp is attached to the socket by rotating a predetermined angle after pressing the base against the socket attached to the fixture body of the lighting fixture. In this mounted state, the base is electrically connected to the power supply side, and the heat radiating sheet is brought into contact with the heat radiating body of the instrument body and thermally connected, so that heat generated in the LED element can be radiated. Yes.

JP 2012-109157 A

  However, since the lamp described above has a structure in which the lamp is rotated and connected to the socket, the engagement structure between the socket and the lamp cap and the assembly process are complicated, and the cost increases.

  Further, in order to allow the lamp to smoothly rotate with respect to the socket, for example, a separate metal foil that is harder than the heat-dissipating sheet, etc. Was covered by. Therefore, the thermal resistance increases with respect to the heat radiation from the light emitting module substrate, and the connection structure between the base and the socket causes a thermal loss.

  The problem to be solved by the present invention is to provide a lamp device and a lighting fixture that are inexpensive and have good heat dissipation.

  The lamp device of the embodiment has a substrate body, a light source is mounted on the substrate body, and a contact point electrically connected to the light source is disposed. The cover accommodates the light source in a space formed together with the substrate body, and has a locking portion that engages with the socket side engaging portion while at least a position facing the light source is translucent.

  According to the present invention, since the engaging means with the socket is formed on the cover of the lamp device, it is possible to provide a lamp device and a lighting fixture that can be easily assembled while reducing the number of parts.

It is sectional drawing which shows a part of lighting fixture of 1st Embodiment. It is sectional drawing which shows a part of state just before mounting | wearing with the lamp device of a lighting fixture same as the above. It is a perspective view which shows the contact vicinity of a lamp device same as the above. It is a perspective view which shows the terminal vicinity of a socket same as the above. It is a perspective view when seeing a lamp device same as the above from the lower part. It is a perspective view when the same lamp device is viewed from above. It is a top view of a socket same as the above. It is a perspective view before attaching a lamp device to a socket device. It is sectional drawing of the lighting fixture which shows a state when a reflector is attached. It is a perspective view of the lighting fixture which shows a state when a reflector is attached.

  The configuration of the embodiment will be described below with reference to FIGS.

  As shown in FIG. 9, the luminaire 11 is an embedded luminaire such as a downlight, and is installed in a state of being embedded in a circular embedded hole provided in an installation portion such as a ceiling board. .

  As shown in FIGS. 1 to 10, a flat lamp device 12 is used for the lighting fixture 11, and the lamp device 12 is engaged with the fixture body 14 via a socket 13. The lamp device 12 includes an LED module substrate 16 as a module substrate in which an LED element that is a semiconductor light emitting element (solid light emitting element) as a light source unit 15 is mounted on a lower surface that is one main surface, and a repulsion of the LED module substrate 16 An insulating heat radiation sheet 17 attached to the other main surface side that is the light side, that is, the upper surface side, and a cover 18 that is a housing that covers one main surface side of the LED module substrate 16 are provided.

  The LED module substrate 16 is, for example, a COB (Chip On Board) type light emitting module substrate in which LED elements are mounted in a matrix on a substrate body 20 formed in a circular shape. Further, a rectangular protrusion 22 protruding in the radial direction is provided on the edge of the substrate body 20, and a plurality of contacts 23 electrically connected to the LED element are provided on the protrusion 22. A contact portion 24 having Further, the LED module substrate 16 is fixed to the cover 18 with screws 25 as coupling means. The substrate body 20 is formed with a step portion 20a that accommodates the head of the screw 25, and is configured so that the screw 25 does not protrude when the cover 18 and the substrate body are coupled by the screw 25.

  Contacts 23 are spaced apart from each other along the direction intersecting (orthogonal) with the radial direction of the substrate body 20 on the protrusion 22.

  Each contact 23 is formed by bending an elongated metal piece having conductivity, and a tip end portion 23a which is a lower end portion is folded in a loop shape. The distal end portion 23a protrudes from the protruding portion 22 to the side, that is, outward of the cover 18, and intersects (orthogonally) the vertical direction (vertical direction) that is the mounting direction of the lamp device 12 with respect to the socket 13. A spring pressure is applied by elastically deforming in the horizontal direction (FIG. 3).

  The contact portion 24 is formed of an insulating material, and is formed so as to insulate the contacts 23 from each other by partitioning the periphery of each contact 23 by the protrusion 22.

  Further, the heat radiating sheet 17 has electrical insulation, and for example, a soft silicone sheet having excellent thermal conductivity is used. The heat dissipation sheet 17 is directly attached to the upper surface of the LED module substrate 16 and is thermally connected to the substrate body 20 (LED element) of the LED module substrate 16.

  In addition, the cover 18 is formed in a dome-shaped central portion 18a at a position facing the front surface of the LED module substrate 16, and is formed on the periphery of the central portion 18a so as to be concave on the substrate body 20 side with respect to the central portion 18a. The edge portion 18b, the rising portion 18c rising from the edge portion 18b in the protruding direction of the central portion 18a, and the outer peripheral portion 18d formed outside the rising portion 18c are integrally formed. The central portion 18a has translucency and light diffusibility, and diffuses and radiates light emitted from the LED module substrate 16 forward. As a result, the entire central portion 18a emits light and forms a light emitting area larger than that of the light emitting portion 15 of the LED module substrate 16. That is, the central portion 18a functions as a light control body for controlling light. The edge portion 18b is in contact with the substrate body 20 outside the light emitting portion 15. Further, the contact portion 24 is disposed on the substrate body 20 at a position outside the upright portion 18c, and the light emitting portion 15 and the contact portion 24 are spatially separated by the cover 18. That is, the central portion 18a and the edge portion 18b and the substrate body 20 form a first space S1 that accommodates the light emitting portion 15, and is separated from the second space S2 in which the contact portion 24 is disposed. An opening 28 that exposes the contact portion 24 (contact 23) to the outside is formed in the outer peripheral portion 18d of the cover 18 by notching. Furthermore, a plurality of, for example, three engaging recesses 29 as engaging portions are formed on the outer peripheral portion 18d of the cover 18 so as to be spaced apart at equal intervals (equal angles) in the circumferential direction.

  The outer peripheral portion 18d of the cover 18 forms the bottom surface of the lamp device together with the substrate body 20, that is, the cover 18 and the substrate body 20 are formed flush with each other. An insulating sheet 17 is provided on the bottom surface of the lamp device 12 formed on the same plane, and covers the outer peripheral portion 18d of the cover 18 and the substrate body 20. Here, since the head of the screw 25 is accommodated in the stepped portion 20a, the bottom surface of the lamp device 12 is flat.

  In each engaging recess 29, a locking projection 31 as a lamp side locking portion for locking the lamp device 12 to the socket 13 (the instrument body 14) protrudes outward in the radial direction. Has been.

  Each locking projection 31 is positioned in each engagement recess 29 so that the tip side does not protrude with respect to the outline of the cover 18. Further, the upper side of each locking projection 31 is an upper inclined surface 35 as a lamp side guide surface, and the lower side of this locking projection 31 is a lower inclined surface as a lamp side locking surface. 36.

  The upper inclined surface 35 is located at the upper end of the engaging recess 29 and is inclined downward in the radial direction toward the lower side.

  Further, the lower inclined surface 36 is continuous with the lower end of the upper inclined surface 35 and is inclined downward inward in the radial direction, that is, toward the center side of the cover 18.

  On the other hand, the socket 13 is, for example, a socket body 41 made of an insulating synthetic resin and formed in an annular shape, and a socket side locking portion for locking the lamp device 12 to the socket 13 disposed in the socket body 41 And a plurality of, for example, three locking units 42 which are bending springs.

  An annular portion 45 is formed in the socket body 41, and an outer edge portion 46 that protrudes upward from the outer periphery of the annular portion 45 is formed.

  The annular portion 45 is formed with receiving portions 51 into which the locking units 42 are fitted and housed, respectively, along the radial direction and spaced apart at substantially equal intervals (equal angles) in the circumferential direction. Yes. Further, in the annular portion 45, a plurality of boss-like screw screw portions 53 to which a plurality of screws 52 for fixing the socket 13 and the instrument body 14 are screwed are formed in the vicinity of each accommodating portion 51. ing.

  Further, an inner wall 47 is formed on the inner peripheral side of the annular part 45, and a terminal 55 is electrically connected by pressure-contacting the tip 23a of the contact 23 of the contact part 24 of the lamp device 12 attached to the socket 13. The arranged terminal portions 56 protrude in the radial direction and are formed on the inner wall 47 along the circumferential direction.

  Each terminal 55 is arranged longitudinally along the vertical direction, and is electrically connected to an external power source (lighting circuit) (not shown) via an output line L electrically connected to these terminals 55. (Fig. 4). These terminals 55 are configured to supply power (DC power) for lighting the LED elements by being electrically connected to the contact 23 of the lamp device 12.

  The terminal portion 56 is formed of an insulating material, and is formed so as to insulate the terminals 55 from each other by partitioning the periphery of the terminals 55.

  Each locking unit 42 is formed of a bent leaf spring, and one end is supported by being in contact with the annular portion 45, protrudes obliquely upward from one end to the inside of the socket body 41, and serves as a lower side as a socket side guide surface. An inclined surface 76 is formed. Further, an upper inclined surface 75 is continuously formed obliquely upward toward the outer edge portion 46 at the upper end of the lower inclined surface 76, and a vertical surface 77 extending downward from the upper end of the upper inclined surface 75 is formed. . Here, one end of the vertical surface 77 is connected to the upper inclined surface 75 and the other end is not fixed. Therefore, the vertical surface 77 is elastically deformed outward from one end of the locking unit 42 and can be accommodated in the accommodating portion 51. Has been.

  An opening 32 is provided inside the annular portion 45 so that a gap is formed between the locking unit 42 and the lamp device. Thus, with the lamp device 12 mounted, a jig is inserted from the opening 32, the locking unit 42 is elastically deformed, and the engagement between the locking unit 42 and the lamp device 12 is released, The device 12 can be removed from the socket 13. That is, the socket 13 is provided with an opening 32 into which a jig for releasing the engagement between the locking unit 42 and the lamp device 12 can be inserted from the outside at a position corresponding to the locking unit 42.

  The instrument main body 14 is attached to the reflector 81, the heat dissipating body 82 disposed on the top of the reflector 81, a plurality of mounting springs 83 attached to the peripheral surface of the heat dissipating body 82, and the heat sink 82. And a plurality of terminal blocks 85 (only one is shown) attached to the mounting plate 84.

  The reflector 81 is made of, for example, metal, and has a cylindrical main body portion 88 and an annular flange portion 89 that protrudes from the lower end of the main body portion 88 to the periphery.

  The diameter of the main body portion 88 is smaller than the diameter of the embedding hole, and the diameter of the flange portion 89 is larger than the diameter of the embedding hole. The main body portion 88 gradually increases in diameter from the upper side to the lower side.

  The radiator 82 is made of a material such as a metal such as aluminum die casting, ceramics, or a resin excellent in heat dissipation. The heat dissipating body 82 includes a cylindrical base portion 93 and a plurality of heat dissipating fins 94 projecting radially from the periphery of the base portion 93.

  Between the plurality of radiating fins 94, gaps 101 are formed that open to the outer periphery, the lower surface, and the upper surface of the radiating body 82.

  A plurality of attachment portions 103 are formed around the base portion 93 of the radiator 82. Below these attachment portions 103, attachment holes (not shown) into which the screws 52 for fixing the socket 13 are screwed are formed.

  The attachment spring 83 is made of a metal leaf spring, and includes a support piece 105 and a contact piece 106 bent from the lower end of the support piece 105. The attachment spring 83 has the upper end of the support piece 105 fixed to the outer surface of the attachment portion 103 of the radiator 82 with a screw 107, and the support piece 105 is disposed along the side surface of the main body portion 88 of the instrument main body 14. Has been. The contact piece 106 protrudes to the side of the instrument main body 14, and a substantially L-shaped hooking portion 108 is formed at the tip of the contact piece 106.

  Further, the mounting plate 84 is made of, for example, metal, and is fixed with screws (not shown) in contact with the upper surface of the radiator 82. The mounting plate 84 is formed with a terminal block mounting portion 109 projecting to the side of the radiator 82, and each terminal block 85 is mounted on the lower surface of the terminal block mounting portion 109. That is, each terminal block 85 is arranged at a position separated from the side of the radiator 82 by the mounting plate 84.

  One of the terminal blocks 85 is for power supply and ground, for example, and the other is for light control signals, for example, and the terminal block 85 and the socket 13 are connected by an electric wire (not shown). The electric wires are connected to each terminal block 85 from the socket 13 through a not-shown wiring hole of the instrument main body 14 and a gap 101 between the radiating fins 94 of the radiator 82.

  The upper end of the reflector 81 enters between the central portion 18a and the upright portion 18c of the lamp device 12, and is in contact with the edge portion 18b. Therefore, in comparison with the configuration in which the socket 13 and the lamp device 12 are surrounded by the reflector 81, the efficiency of extracting the light emitted from the lamp device 12 is improved, and the reflector 81 has a small size.

Can be Further, even if the height of the reflector 81 is reduced, the light shielding angle can be increased. Furthermore, since the light emitting part 15 and the contact part 23 can be separated together with the cover 18, light and thermal influence can be reduced.

  Next, assembly of the lighting fixture 11 will be described.

  The socket 13 is fixed to the radiator 82 with the screw 52, and the reflection plate 81 is attached to the socket 13 by attachment means (not shown).

  When attaching the socket 13 to the instrument main body 14, the wires from the socket 13 previously drawn out from the wiring holes (not shown) of the instrument main body 14 are connected to the terminal blocks 85, and these terminal blocks 85 are attached. The mounting plate 84 is fixed to the upper portion of the radiator 82 with a plurality of screws.

  Next, each attachment spring 83 is fixed to the side surface of the heat radiating body 82 with each screw 107.

  The contact surface 98 of the heat dissipating body 82 is exposed on the inner wall 47 of the socket 13.

  Next, installation of the luminaire 11 will be described.

  A power line, a ground wire, a dimming signal line, etc. previously led to the embedded hole of the installation part are drawn from the embedded hole below the installation part and connected to each terminal block 85 of the luminaire 11. .

  With the contact piece 106 of each mounting spring 83 elastically deformed and held along the side surface of the instrument body 14, first, the terminal block mounting portion 109 and the terminal block 85 of the mounting plate 84 are directed upward. The lighting fixture 11 is inclined, and the terminal block mounting portion 109 and the terminal block 85 of the mounting plate 84 are inserted diagonally into the embedding hole, and then the radiator 82 is returned while the lighting fixture 11 is returned to a horizontal position. The main body portion 88 of the instrument main body 14 and each attachment spring 83 are inserted into the embedding hole.

  When the hooking portion 108 of each attachment spring 83 moves above the embedding hole, the holding of each attachment spring 83 is released. As a result, the contact piece 106 of each mounting spring 83 expands to the side of the instrument main body 14 due to the repulsive force against the elastic deformation, and the contact piece 106 contacts the upper edge of the embedding hole so that the luminaire 11 is moved upward. The flange portion 89 comes into contact with the lower surface of the portion to be installed, and the installation is completed.

  Further, when removing the luminaire 11 from the installed portion, the luminaire 11 is pulled down against the pulling force by the respective attachment springs 83, and the contact pieces 106 of the respective attachment springs 83 moved below the embedded holes are removed. While elastically deforming along the side surface of the instrument main body 14, the main body 88 and the radiator 82 of the instrument main body 14 are moved to the lower side of the embedding hole, and the lighting fixture 11 is inclined as in the installation, The terminal block mounting portion 109 and each terminal block 85 of the mounting plate 84 are moved below the embedding hole.

  Next, attachment of the lamp device 12 to the lighting fixture 11 will be described.

  The lamp device 12 is inserted inside the main body 88, and each engaging recess 29 is pushed upward in the mounting direction in a state in which each engaging recess 29 is aligned with each locking unit 42 of the socket 13, and is inserted into the socket 13.

  At this time, the upper inclined surface 35 of the locking projection 31 located in each engaging recess 29 of the lamp device 12 abuts on the lower inclined surface 76 of each locking unit 42 (FIG. 2), and the lamp device 12 is further moved. When pushed up and pushed against the bias of the locking unit 42 along the inclination of the upper inclined surface 35, the locking unit 42 retreats to the accommodating portion 51, and the locking protrusion 31 moves upward on the lower inclined surface 76. When overcoming, the locking unit 42 returns and advances, the upper inclined surface 75 comes into contact with the lower inclined surface 36 of the locking protrusion 31, and each locking unit 42 lowers the lamp device 12. Support from the side (Fig. 1).

  Further, each contact 23 of the lamp device 12 is slidably contacted with each terminal 55 of the socket 13 while the distal end portion 23a is elastically deformed, and an electrical connection between each contact 23 and each terminal 55 is obtained.

  In this way, the lamp device 12 can be mounted with a single touch by simply being pushed into the socket 13.

  When the lamp device 12 is mounted, the LED module substrate 16 of the lamp device 12 is in close contact with the contact surface 98 of the radiator 82 via the heat dissipation sheet 17 so that heat can be efficiently conducted from the lamp device 12 to the radiator 82. Yes.

  Further, when removing the lamp device 12 from the lighting fixture 11, by inserting an appropriate jig (not shown) into each opening 32, the upper locking surface 75 locking claw 63 of each locking unit 42 After releasing the locking of the lamp device 12 against the bias, the lamp device 12 is removed.

  Next, lighting of the lamp device 12 will be described.

  DC power is supplied to each LED element from the power supply line through the terminal block 85, the terminal 55 (output line L) of the socket 13 and the contact 23 of the lamp device 12, and the LED element is lit. Light emitted when these LED elements are lit passes through the light control body 21 and is emitted from the emission opening 26 of the instrument body 14.

  In addition, the heat generated by the LED elements of the LED module substrate 16 at the time of lighting is mainly efficient in the heat dissipating body 82 that is in close contact with the heat dissipating sheet 17 that is thermally bonded from the substrate body 20 of the LED module substrate 16. The heat is well conducted, and the heat is dissipated into the air from the surface of the heat dissipating body 82 including the heat dissipating fins 94.

  Further, a part of the heat conducted from the lamp device 12 to the radiator 82 is conducted to the fixture body 14, the plurality of attachment springs 83, and the attachment plate 84, respectively, and is also radiated into the air from these.

  As described above, in the above-described embodiment, the locking claw 63 of the locking unit 42 that is biased in the horizontal direction intersecting the vertical direction that is the mounting direction of the lamp device 12 is provided, and the mounting direction of the lamp device 12 is increased. When the locking projection 31 gets over the lower locking portion 76 after retreating against the urging force of the locking unit 42 by abutting with the locking projection 31 of the lamp device 12 by pushing in, The lamp device 12 is locked by the locking projection 31 by returning and advancing by the urging of the unit 42. For this reason, the lamp device 12 can be easily mounted simply by pushing it into the socket 13 in the mounting direction. For example, the configuration is simple compared to a configuration in which the lamp device 12 is rotated with respect to the socket 13 and mounted. Thus, the lamp device 12 can be attached to the socket 13, and the lighting fixture 11 can be manufactured at low cost.

  According to at least one embodiment described above, since the locking portion 29 is provided in the cover 18 of the lamp device 12, the lamp device can be formed by fixing the cover 18 and the substrate body 20, The number of parts can be reduced and the assembly can be facilitated.

  In addition, since the bottom surface of the lamp device is formed by the cover 18 and the substrate body 20, heat can be radiated to the fixture body in contact with the bottom surface of the lamp device 12, and insulation of the substrate body 20 can be ensured.

  Further, since the light emitting unit 15 and the contact 23 are spatially separated by the cover 18, deterioration due to light from the light emitting unit 15 or heat generation can be suppressed.

  In addition, the heat dissipation sheet 17 covering the upper surface, which is the other main surface of the substrate body 20 of the LED module substrate 16, is brought into contact with the heat dissipator 82 and thermally connected, thereby obtaining good heat dissipation, By interposing the concave portion 99 that is an insulating portion between the terminal 55 of the socket 13 and the radiator 82, an insulation distance from the radiator 82 can be secured.

  Further, since the lamp device 12 can be easily mounted by simply pushing it into the mounting direction with respect to the socket 13, the heat dissipating sheet 17 is mounted on the socket 13 by rotating the lamp device 12 as in the configuration in which the heat dissipating body 82 is mounted. It is not necessary to have a hard structure that is slippery, but it can be made of a soft member such as a silicone sheet with excellent heat dissipation (thermal conductivity), and directly contact the heat radiator 82. Therefore, the increase in thermal resistance can be suppressed, and the heat radiation from the LED module substrate 16 (LED element) can be directly transmitted from the heat radiation sheet 17 to the heat radiator 82 without causing thermal loss, and the good heat dissipation can be achieved. Can be obtained.

  In each of the above embodiments, as the light source, an arbitrary light source such as a semiconductor light emitting element (solid light emitting element) such as an organic EL element can be used in addition to the LED element.

  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.

DESCRIPTION OF SYMBOLS 11 ... Lighting fixture, 12 ... Lamp apparatus, 13 ... Socket, 14 ... Appliance main body, 15 ... LED element as a light source part, 16 ... LED module substrate as a module board, 18 ... Cover, 20 ... Substrate body, 23 ... Contact , 31 ... Locking part as lamp side locking part, 42 ... Locking unit as socket side locking part, 55 ... Terminal, 82 ... Radiator

Claims (8)

A substrate body;
A light source mounted on the substrate body;
A contact mounted on the substrate body and electrically connected to the light source;
A cover having an engaging portion that accommodates the light source in a space formed together with the substrate body, at least a position facing the light source is translucent, and engages with a socket-side engagement stopper;
A lamp device comprising:   The lamp device according to claim 1, wherein the cover forms a bottom surface of the lamp device together with the substrate body.   The lamp device according to claim 2, further comprising an insulating sheet provided so as to cover a bottom surface of the lamp device formed by the substrate body and the cover.   The lamp device according to any one of claims 1 to 3, wherein the substrate body includes a step portion that accommodates a part of an engaging unit that couples the cover and the substrate body.   The lamp device according to any one of claims 1 to 4, wherein the cover spatially separates the light source unit and the contact disposed in the substrate body. An instrument body;
A lamp device according to any one of claims 1 to 5;
When the lamp device is attached to the fixture main body and pushed into the mounting direction of the lamp, the lamp device retreats against the urging by contact with the locking portion of the lamp device, and then returns and advances by the urging. A socket provided with a socket-side locking portion that engages with the locking portion of the lamp device and presses the lamp device against the fixture body, and a terminal that is electrically connected to a contact of the lamp device;
The lighting fixture characterized by comprising. A cover of the lamp device includes a central portion that is formed so as to project in the light emitting direction with respect to the light source portion, and an edge portion that is in contact with the substrate body.
The lighting apparatus according to claim 6, further comprising a substantially cylindrical reflector, wherein one end of the reflector is disposed at an edge of the cover.   The socket is provided with an opening into which a jig for releasing the engagement between the socket side latching portion and the lamp device can be inserted from the outside at a position corresponding to the socket side latching portion. Item 8. The lighting fixture according to Item 6 or 7.

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