JP5822068B2 - Lighting device - Google Patents

Description

  Embodiments described herein relate generally to a light emitting module on which a light emitting element is mounted and a lighting device having a support member that supports the light emitting module.

  Conventionally, in a light bulb shaped lamp as an illumination device using, for example, an LED as a light emitting element, a light emitting module having an LED is disposed on the other end side of a base body which is an aluminum cover as a support member having a base on one end side. A globe that covers the light emitting module is disposed, and a lighting circuit that supplies power to the LED to light it is disposed in the base via a cover as an insulating member.

JP 2011-134568 A

  In the above-described light bulb shaped lamp, a separate holding member for pressing and fixing the light emitting module from the globe side to one end side of the base is used in order to securely fix and thermally connect the light emitting module to the base. Although such a holding member may be used, the number of work steps and the number of parts are increased.

  The problem to be solved by the present invention is to provide a lighting device that can improve manufacturability and can reduce the manufacturing cost.

The illumination device of the embodiment includes a light emitting module on which a light emitting element is mounted. Moreover, this illuminating device has a support member which has an attachment hole and supports a light emitting module on an attachment surface. Furthermore, this illuminating device has the glove | globe formed with the member which has translucency. This glove is provided with one glove part which is open on one end side and the other end side and holds the light emitting module on the support member by being fixed to the support member. The glove includes another glove part that is connected to one end side of one glove part and covers the light emitting element. On the other end side of the one glove part, there are provided a holding part protruding in the inner direction and a through hole formed in the holding part and arranged to communicate with the mounting hole of the support member. Some of the light emitting module Rukoto screw is tightened is inserted into the through hole and the mounting hole is pressed to the support member by the holding unit.

According to the present invention, the other end side of one glove part constituting the glove is fixed to the support member by inserting and tightening a screw into the through hole and the attachment hole, and a part is supported by the holding part. Since it can hold | maintain to this support member in the state pressed against the member, improvement of manufacturability and reduction of manufacturing cost can be expected.

It is a top view which shows a part of illuminating device which shows 1st Embodiment. It is sectional drawing of an illuminating device same as the above. It is a decomposition | disassembly sectional drawing of a part of lighting apparatus same as the above. It is sectional drawing of the illuminating device which shows 2nd Embodiment.

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

  In FIG. 2, reference numeral 11 denotes a light bulb shaped lamp as a lighting device. The light bulb shaped lamp 11 includes a base body 12 as a holder as a metal support member, one end side of the base body 12 (on the lamp axis of the light bulb shaped lamp 11). A light-emitting module 13 attached to one end), a cover 14 that is an insulating member attached to the other end of the substrate 12, a base (not shown) attached to the other end of the cover 14, and the light-emitting module 13. A transparent globe 16 attached to one end of the base 12 and a lighting circuit 17 housed inside the cover 14 between the base 12 and the base.

  The base 12 is a heat radiating member integrally formed of a metal material such as aluminum having excellent thermal conductivity, i.e., an aluminum heat radiating cover, and a cylindrical body 21 is formed in the central area, and around the body 21. A plurality of radiating fins (not shown) along the lamp axis direction are radially projected.

  The body portion 21 is closed at one end side by a circular support portion 23 and opens toward the other end side. One main surface that is a surface on one end side of the support portion 23 is an attachment surface 27 to which the light emitting module 13 is attached in surface contact with the central region. A plurality of, for example, four attachment holes 28 for screwing the base plate 12 to the base 12 are formed, and an annular glove attachment portion 29 to which the globe 16 is fitted and attached is formed in a concave shape at the peripheral edge. ing.

  The support 23 is formed with a hole (not shown) for wiring connection between the lighting circuit 17 and the light emitting module 13.

  The light emitting module 13 has a substantially square substrate 31 formed of a metal material such as aluminum or an insulating material such as ceramics or epoxy resin, for example, and a mounting surface that is a surface on one end side of the substrate 31 In addition, a wiring pattern is formed, and LED chips 32, which are light sources as a plurality of light emitting elements, are arranged in a matrix and mounted in the central area of the mounting surface.

  Although not shown, the plurality of LED chips 32 are connected in series by wire bonding along the direction between the pair of electrode pads of the wiring pattern arranged on both side areas. In addition, a connector for electrically connecting the lighting circuit 17 side and the light emitting module 13 side with the light emitting module 13 attached to the base 12 is disposed on the substrate 31.

  Here, for example, an LED chip that emits blue light is used as the LED chip 32. On the plurality of LED chips 32 mounted on the substrate 31, a sealing resin which is a transparent resin such as a silicone resin is applied and formed. The sealing resin is mixed with a phosphor that is excited by a part of the blue light from the LED chip 32 and emits yellow light. Therefore, the LED chip 32 and the sealing resin constitute the light emitting portion 36, and the surface of the sealing resin that is the surface of the light emitting portion 36 becomes the light emitting surface 37, and white illumination light is emitted from the light emitting surface 37. .

  The substrate 31 is attached in a state where the surface on the other end opposite to the mounting surface of the LED chip 32 is in surface contact with the attachment surface 27 which is the surface on one end of the support portion 23 of the base 12. At this time, a heat conductive material such as a sheet or grease excellent in thermal conductivity is interposed between the surface on the other end side of the substrate 31 and the mounting surface 27 of the base 12. That is, the substrate 31 is thermally connected to the base 12. Further, the substrate 31 is formed with recesses 31b that are recessed in an arc shape between the corners 31a and 31a, and these recesses 31b are aligned with the mounting holes 28 of the base body 12, respectively. When the substrate 31 is attached to the attachment surface 27 of the base body 12, the center of the light emitting surface 37 is located corresponding to the center of the lamp shaft. The substrate 31 (light emitting module 13) may be provided with a light guide column, which is a light diffusing light guide member, covering the light emitting surface 37 (light emitting unit 36).

  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 41 that is interposed between the base 12 and the base and insulates between each other is formed on the outer peripheral portion on the other end side of the cover 14. A wiring hole (not shown) that communicates with the hole of the base 12 is formed on the surface on one end side of the cover 14. Further, the cover 14 is fixed to the base 12 by an uneven structure not shown.

  The base can be connected to a socket for general lighting bulbs such as E17 type and E26 type, for example, and is fitted to the cover 14 and fixed by crimping, and on the other end side of the shell. It has the insulation part provided and the eyelet provided in the top part of this insulation part. Further, the base is locked and fixed to the cover 14 by an uneven structure not shown.

  As shown in FIGS. 1 to 3, the globe 16 is formed in a spherical shape covering the light emitting module 13 with light-transmitting and light-diffusing glass or synthetic resin. The glove 16 includes a lower glove part 45, which is one glove part, and an upper glove part 46, which is another glove part, and includes a center position O of the spherical surface of the glove 16, for example, and a plane orthogonal to (intersects) the lamp axis. It is divided along (line) P, and the lower glove part 45 and the upper glove part 46 are connected in combination with each other. That is, the lower glove part 45 and the upper glove part 46 are formed of the same material (member).

  The lower glove part 45 has a cylindrical shape in which one end side and the other end side are opened, and gradually increases in diameter from the other end side to the one end side. Further, a holding portion 51 for pressing and holding the light emitting module 13 against the base 12 is provided in a flange shape on the inner peripheral edge on the other end side of the lower globe portion 45. Furthermore, a fitting edge portion 52 that protrudes from the opening edge portion on the other end side of the lower globe portion 45 and that is fitted to the globe attachment portion 29 of the base 12 and is fixed by, for example, an adhesive is provided. .

  The holding part 51 is formed along a plane perpendicular to the lamp axis and has an annular shape. That is, an opening 54 is formed in a circular shape at the center of the holding part 51, and the light emitting part 36 (LED chip 32) of the light emitting module 13 is exposed to the opening 54. ing. A fitting recess 55 into which the substrate 31 of the light emitting module 13 is fitted is provided on the other end side of the holding portion 51, that is, on the light emitting module 13 side. Therefore, the surface on the other end side of the holding portion 51 is a contact portion 56 that is in close contact with the mounting surface 27 of the base 12 at a position excluding the fitting recess 55. Further, the holding portion 51 has through holes 58 for screwing the globe 16 (lower glove portion 45) to the base 12 at a plurality of locations corresponding to the mounting holes 28 of the base 12, for example, four locations. Positioning convex portions 59 that are formed and project at the positions corresponding to the respective through holes 58 in an arc shape toward the opening portion 54 side and are respectively fitted into the concave portions 31b of the substrate 31 of the light emitting module 13. Is formed.

  Further, the upper globe part 46 is formed in a hemispherical shape that gradually decreases in diameter from the other end side to the one end side, and is configured such that the other end side is airtightly connected to one end side of the lower globe part 45. ing.

  Further, the lighting circuit 17 is, for example, a circuit that supplies a constant current to the LED chip 32 of the light emitting module 13, and includes circuit boards 62 and 63 on which a plurality of circuit elements 61 that constitute the circuit are respectively mounted. These circuit boards 62 and 63 are housed in the cover 14 and fixed. A cap shell and an eyelet are electrically connected to the input side of the lighting circuit 17 with a connection line. Further, a connecting wire (not shown) is connected to the output side of the lighting circuit 17, and this connecting wire is drawn out to one end side of the base 12 through the wiring hole of the cover 14 and the hole of the base 12, and the connector portion on the tip side is the substrate. Connected with 31 connectors.

  When manufacturing the light bulb shaped lamp 11, first, the other side surface of the light emitting module 13 in which the LED chip 32 or the like is mounted on the substrate 31 is placed on the mounting surface 27 of the support portion 23 of the base 12.

  In this state, the lower globe portion 45 of the globe 16 is fitted to the substrate 31 of the light emitting module 13 in the fitting recess 55 and each positioning projection 59 is fitted in each recess 31b, and the fitting edge 52 is the base. It is attached so that it fits into the 12 globe attachment parts 29, the through hole 58 and the attachment hole 28 of the base 12 are aligned, and a screw is inserted from the through hole 58 side (upper side) which is the globe 16 side. By tightening, the corners 31a of the substrate 31 of the light emitting module 13 are pressed against the mounting surface 27 of the base 12 by the holding part 51, and the light emitting module 13 is held and fixed to the base 12 together with the lower globe part 45. 13 (substrate 31) and base 12 are thermally coupled. For example, by fixing the fitting edge portion 52 and the globe attachment portion 29 using an adhesive, the connection strength between the base 12 and the globe 16 can be further improved, and the strength of the bulb lamp 11 can be improved. Further, the upper glove part 46 is connected and fixed to the lower glove part 45 of the glove 16 with an adhesive or the like.

  Next, one end side of the cover 14 housing the lighting circuit 17 (circuit boards 62 and 63) is inserted into the body portion 21 of the base 12 and fixed. At this time, the lighting circuit 17 and the light emitting module 13 are electrically connected to each other by using the wiring, the connector, and the connector portion drawn out through the hole portion formed in the support portion 23 of the base 12 and the wiring hole formed in the cover 14. Connect.

  After this, the base connected to the lighting circuit 17 and the eyelet via the ground wire is inserted from the other end side of the cover 14 with the power line electrically connected to the lighting circuit 17 side led out to the outside of the shell. The power bulb is sandwiched between the cover 14 and the shell, and the base is locked and fixed to the cover 14 to complete the light bulb shaped lamp 11.

  When the light bulb shaped lamp 11 is attached to a socket of a lighting fixture (not shown) and energized, the lighting circuit 17 operates, power is supplied to the plurality of LED chips 32 of the light emitting module 13, and the plurality of LED chips 32 emit light. This light is diffused and emitted through the globe 16.

  The heat generated when the plurality of LED chips 32 of the light emitting module 13 are turned on is thermally conducted to the substrate 31 and is also conducted from the substrate 31 to the base 12 and from the base 12 to the plurality of heat radiation fins. The heat dissipation fins efficiently dissipate heat into the air.

  Thus, by fixing the lower glove part 45 constituting the globe 16 to the base 12, the light emitting module 13 can be held on the base 12, so that the productivity can be improved and the manufacturing cost can be reduced.

  In addition, the nail | claw-shaped fitting fitted to the base | substrate 12 like 2nd Embodiment shown in FIG. 4 in the front-end | tip part of the fitting edge part 52 of the lower glove part 45 of the glove | globe 16 of the said 1st Embodiment. The joint portion 66 may be projected inward. In this case, the lower glove part 45 (glove 16) is made stronger with respect to the base 12 by forming the fitting receiving part 67 into which the fitting part 66 is fitted in the glove mounting part 29 of the base 12. These connection strengths, that is, the strength of the light bulb shaped lamp 11, can be increased.

  According to at least one embodiment described above, the light emitting module 13 can be held on the base 12 by fixing the lower glove part 45 constituting the globe 16 to the base 12. Therefore, fixing the globe 16 to the base 12 and holding the light emitting module 13 to the base 12 can be performed by the same operation. For example, a separate holding member is used to hold the light emitting module on the base and separately attach the globe. Compared with the case where it is attached to the substrate, the number of work steps can be suppressed and the productivity can be improved. Moreover, since the lower glove part 45 constitutes the glove 16, the light emitting module 13 can be held on the base 12 only by the material (material) necessary for the glove 16, and no separate member is required, so the number of parts can be suppressed. Manufacturing cost can be reduced.

  In each of the above embodiments, the light emitting element is not limited to the LED chip 32, and for example, an EL element may be used.

  The lighting device is not limited to the light bulb shaped lamp 11, and can be used for any lighting device including a light emitting module and a glove that covers the light emitting module and is fixed to a base.

  And although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Light bulb shaped lamp as lighting device
12 Substrate as support member
13 Light emitting module
16 Globe
27 Mounting surface
28 mounting holes
32 LED chips as light-emitting elements
45 Lower glove part as one glove part
46 Upper glove part as another glove part
51 Holding part
58 through hole

Claims (1)

A light emitting module mounted with a light emitting element;
A support member having a mounting hole and supporting the light emitting module on the mounting surface;
One glove part which is open at one end side and the other end side and is fixed to the support member to hold the light emitting module on the support member, and another glove which is connected to one end side of the one glove part and covers the light emitting element And a glove formed of a translucent member;
Comprising
On the other end side of the one glove part, there are provided a holding part protruding in the inner direction, and a through hole that is formed in this holding part and arranged to communicate with the mounting hole of the support member,
A lighting device, wherein a part of a light emitting module is pressed against a support member by a holding portion in a state where a screw is inserted and tightened into a through hole and an attachment hole.

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