JP2014120332A - Illumination device and holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To alleviate trouble of work for fixing a light emitting module to a base part by a holder in an illumination device configured by fixing the light emitting module to the base part by the holder.SOLUTION: At a peripheral wall part 32 of a holder 30, a fitting claw 35 is provided protruding forward at a front end part 32a, and at a rear end part 32b, a screw fitting part 36 is provided protruding backward. A base 20 is a metal plate-like member having a favorable heat radiation property, and in front of a mounting region 21 in the base 20, a locking hole 22 for locking the fitting claw 35 of the holder 30 is provided, and at the back of the mounting region 21, a screw hole 23 is provided in a position corresponding to an insertion hole 36a. An assembly screw 39 passes through the screw fitting part 36 and is fastened to the screw hole 23 of the base 20.

Description

  The present invention includes a light emitting module in which a semiconductor light emitting element such as an LED chip is mounted on a substrate, a base portion on which the light emitting module is mounted, and a holder that covers the light emitting module and fixes the light emitting module to the base portion. About.

  LEDs have the advantages of long life, small size, good luminous efficiency, and vivid luminescent color, and are widely used in backlights for lighting devices and display devices. In addition, as a light-emitting module used in large-capacity lighting devices such as downlights, a light-emitting module that has a light-emitting part that is mounted on a single substrate and covered with a sealing material is sealed. Has been. In general, the light emitting module is provided with a power supply terminal and a wiring for supplying power to the light emitting portion on the substrate, and is used by being fixed to the base portion of the lighting device.

As a method of fixing the light emitting module to the base portion, a method of fixing with a holder is known. That is, the light emitting module mounted on the base portion is covered with a holder, and the peripheral wall portion of the holder is fixed to the base portion with screws, thereby fixing the light emitting module in a pressed state against the base portion.
For example, Patent Document 1 discloses an LED light source socket that can be attached to and detached from a flat LED module on which an LED element is mounted and is fixed to a heat sink with screws. This LED light source socket has an opening that exposes the LED light source part of the flat LED module, and functions as a holder that presses and fixes the flat LED module toward the heat sink at the periphery of the opening. Since the LED module is fixed in a state of being pressed against the base portion, heat radiation from the LED module is also improved.

  Further, like this LED light source socket, some holders have a built-in connection terminal for connecting a lead wire for supplying power from the outside and a power supply terminal of the light emitting module. By using such a holder, it is possible to fix the light emitting module to the lighting fixture and to easily make an electrical connection.

JP 2004-265626 A

When assembling the luminaire described above, a process of attaching the holder to the light emitting module and fixing the peripheral wall portion of the holder to the base portion with a screw is performed.
In this step, the positions of the screw holes of the holder and the base portion are aligned and screwed at two or more locations. In this case, the number of times of screwing is required, and it takes time to screw the holder screw hole with the screw hole of the base portion when screwing for the first time.

  In view of the above problems, an object of the present invention is to reduce labor of fixing a light emitting module to a base portion with a holder in a lighting device in which the light emitting module is fixed to a base portion with a holder.

  In order to achieve the above object, a lighting device according to one embodiment of the present invention covers a light emitting module that includes a base portion, a light emitting portion that is mounted on the base portion and has a light emitting element mounted on the substrate, and the light emitting module. And a holder having a cover portion having an opening in a region corresponding to the light emitting portion, and a peripheral wall portion extending outward from the periphery of the cover portion, and a first portion of the peripheral wall portion And the base portion is provided with a locking portion for locking the mounting claw, the mounting claw is locked to the locking portion, and the second portion of the peripheral wall portion away from the first portion. Is fastened to the base portion by the fastening means, so that the peripheral wall portion is fixed to the base portion in a state where the cover portion presses the light emitting module against the base portion.

When assembling the lighting device according to the above aspect, the light emitting module is placed on the base, and the mounting claw of the holder is first locked to the locking portion of the base portion. By this locking, the first portion of the holder is temporarily fixed to the base portion. Next, the holder is rotated with the locked portion as a fulcrum, and the holder is put on the light emitting module.
Then, the 2nd area | region away from the 1st area | region in the surrounding wall part of a holder is fastened to a base part by a fastening means.

With this fastening, the first portion and the second portion of the holder can be fixed to the base portion by tightening between the attachment claw of the holder and the locking portion of the base portion. Accordingly, the light emitting module is fixed in a state of being pressed against the base portion by the cover portion of the holder. Accordingly, heat is radiated well from the light emitting module to the base portion.
Therefore, compared with the case where the holder is conventionally screwed at two or more locations when the holder is fixed to the base portion, the number of locations to be screwed can be reduced, and the number of screw tightening steps can be reduced in the assembly process.

Moreover, the 1st area | region of a holder can be easily temporarily fixed to a base part by latching an attachment nail | claw to the latching | locking part of a base part.
Therefore, the workability of the process of attaching the holder to the base part is also improved, thereby reducing the manufacturing cost of the lighting device.

1 is a perspective view illustrating an appearance of a lighting device 6 according to a first embodiment. 2A is an exploded perspective view of the main part of the lighting device 6, and FIG. 2B is a perspective view of the holder as viewed from the back side. (A) is the perspective view which divided the illuminating device 6 into 2 vertically, (b) is sectional drawing. It is a figure explaining the dimension etc. of the holder 30 and a light emitting module. 4 is a diagram illustrating a process of fixing the light emitting module 10 on the base 20 with a holder 30. FIG. It is sectional drawing which shows the state in which the downlight 1 provided with the illuminating device 6 was attached to the ceiling 2. FIG. It is a figure which shows the structure of the illuminating device 7 concerning Embodiment 2. FIG. It is a figure which shows the structure of the illuminating device 8 concerning Embodiment 3. FIG. It is a principal part exploded view which shows the structure of the illuminating device 8 concerning Embodiment 4. FIG. FIG. 10 is a diagram illustrating a process of fixing the light emitting module 10 on the base 20 with a holder 130 according to the fourth embodiment. It is a figure which shows the structure and state of the illuminating device concerning Embodiment 5. FIG. It is a figure which shows the structure and state of the illuminating device concerning Embodiment 5. FIG. It is a figure which shows the structure of the illuminating device concerning a modification.

<Background to the Present Invention>
In the lighting device in which the light emitting module mounted on the base portion is pressed and fixed by the holder, a mounting claw is provided in the first region of the holder, and a locking portion for locking the mounting claw is provided in the base portion. The present inventors have found that the number of screwing operations can be reduced by reducing the number of places where the holder is screwed.

  In addition, the holder can be rotated while the mounting claw is locked to the locking portion, and the light emitting module can be covered and pressed against the base portion, and the second portion of the holder can be fixed to the base with a screw or the like. It has also been found that when tightened to the portion, the mounting claw and the locking portion can be tightened by acting on the mounting claw provided in the first portion of the holder with the light emitting module as a fulcrum.

Based on such knowledge, the configuration of the lighting device of the present invention was reached.
<Aspect of the Invention>
An illumination device according to one embodiment of the present invention includes a base portion, a light-emitting module that is mounted on the base portion and has a light-emitting portion in which a light-emitting element is mounted over a substrate, and a holder that covers the light-emitting module. A cover portion having an opening in a region corresponding to the light emitting portion, and a peripheral wall portion extending outward from the periphery of the cover portion, and a mounting claw is provided in a first portion of the peripheral wall portion, The base portion is provided with a locking portion for locking the mounting claw. The mounting claw is locked to the locking portion, and the second portion of the peripheral wall portion away from the first portion is fastened to the base portion by the fastening means. By being fastened, the peripheral wall portion is fixed to the base portion while the cover portion presses the light emitting module against the base portion.

As the fastening means, a screw or a hook may be used.
A holder according to one embodiment of the present invention is used in a lighting device including a base portion and a light-emitting module including a light-emitting portion that is mounted on the base portion and has a light-emitting element mounted on a substrate. A cover for covering, having a cover portion having an opening in a region corresponding to the light emitting and emitting portion, and a peripheral wall portion extending outward from the peripheral edge of the cover portion, the first portion of the peripheral wall portion An attachment claw is provided, the attachment claw is engaged with the engagement portion of the base portion, and the second portion apart from the first portion of the peripheral wall portion is fastened to the base portion by the fastening means, whereby the cover portion is The peripheral wall portion is fixed to the base portion while the light emitting module is pressed against the base portion.

In such an illuminating device and holder, when the illuminating device is assembled, the light emitting module is placed on the base, and first, the attachment claw of the holder is locked to the locking portion of the base portion. By this locking, the first portion of the holder is temporarily fixed to the base portion. Next, the holder is rotated with the locked portion as a fulcrum, and the holder is put on the light emitting module.
Then, the 2nd area | region away from the 1st area | region in the surrounding wall part of a holder is fastened to a base part by a fastening means. With this fastening, the first portion and the second portion of the holder can be fixed to the base portion by tightening between the attachment claw of the holder and the locking portion of the base portion. Accordingly, the light emitting module is fixed in a state of being pressed against the base portion by the cover portion of the holder. Accordingly, heat is radiated well from the light emitting module to the base portion.

Therefore, even when the operator fastens the holder once, the holder can be fixed to the base portion with the light emitting module pressed against the base portion.
In the peripheral wall portion, it is preferable that the first portion and the second portion are in positions facing each other with the cover portion interposed therebetween.
A power supply terminal may be provided on a substrate in the light emitting module, and a connection terminal that contacts the power supply terminal in a state where the holder is mounted on the light emitting module may be mounted on the holder. In this case, if power is supplied from the outside to the connection terminal attached to the holder, power is supplied to the power supply terminal of the light emitting module via the connection terminal.

The form in which the connection terminal is attached to the holder may be attached so as to be in non-contact with the power supply terminal when the pressing force of the cover portion against the light emitting module decreases.
In this case, when the pressing force with which the holder presses the light emitting module decreases, the power supply to the light emitting module is interrupted. That is, in a state where the pressing force of the light emitting module is weakened and the heat dissipation from the light emitting module to the base portion is likely to be lowered, the light emitting module is not energized, and thus safety is improved.

In the holder, the peripheral wall portion may protrude from the base side surface of the cover portion to the base side. In this case, by setting the protrusion amount to be smaller than the thickness of the substrate, the light emitting module is firmly pressed against the base portion by the cover portion when the second portion of the peripheral wall portion is fastened to the base portion by the fastening means.
An elastic body is provided on the surface of the cover portion that faces the light emitting module, and the cover portion holds the light emitting module against the base portion with the holder. preferable.

It is preferable that the tip of the mounting claw protrudes outward from the holder so that the mounting claw can be easily locked to the locking portion. Also, as the fastening means is tightened, the mounting claw and the base portion This is preferable in order to firmly tighten the space between the locking portions.
As a fastening means, it is preferable to use a screw.
DESCRIPTION OF EMBODIMENTS Hereinafter, an illumination light source and an illumination device according to embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangement positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same structural member.
[Embodiment 1]
(Whole structure of lighting device)
FIG. 1 is a perspective view showing an appearance of the illumination device 6 according to the first embodiment. 2A is an exploded perspective view of the main part of the lighting device 6, and FIG. 2B is a perspective view of the holder as viewed from the back side.

In the figure, the direction indicated by the arrow Y is the rear, the direction indicated by the arrow X is the right side, and the direction indicated by the arrow Z is the upper side.
The lighting device 6 includes a light emitting module 10, a base 20 on which the light emitting module 10 is mounted, and a holder 30 that covers the light emitting module 10 and fixes the light emitting module 10 without pressing it onto the base 20. A power supply wiring member 40 is connected to the holder 30.

Although not shown, an optical component such as a light transmissive cover or a lens may be mounted so as to cover the upper portion of the holder 30.
(Light Emitting Module 10)
The light emitting module 10 includes a substrate 11, a light emitting portion 12 formed on the upper surface of the substrate 11, terminal portions 13 a and 13 b provided on the upper surface of the substrate 11, and the like.

The substrate 11 has a rectangular shape and has an insulating layer made of an insulating material such as ceramics or a heat conductive resin. The entire substrate 11 may be an insulating layer, or may have a two-layer structure of an insulating layer and a metal layer made of an aluminum plate.
The dimensions of the substrate 11 are, for example, 45 mm in length, 30 mm in width, and 1 mm in thickness, and the dimensions of the light emitting unit 12 are, for example, 20 mm in length and 20 mm in width.

  The light emitting unit 12 is also rectangular and is formed on the substrate 11. For example, as shown in the partial enlarged view of FIG. 2A, the light emitting unit 12 includes a plurality of light emitting elements 14 arranged in the horizontal direction covered with a sealing member 15 to form a light emitting element array 16, and the light emitting elements Rows 16 are formed side by side in the front-rear direction. The light emitting elements 14 arranged in the horizontal direction are connected to each other with a land 17 on the substrate 11 by wire bonding.

  An LED is used as the light emitting element 14, but it may be an LD (laser diode) or an EL element (electric luminescence element). A part of blue light having a dominant wavelength of about 430 nm to 480 nm emitted from the light emitting element 14 is converted into light having a dominant wavelength of, for example, about 530 nm to 650 nm by the wavelength conversion material in the sealing member 15. As a result, white light is emitted by the color mixture of the wavelength-converted light and the unconverted blue light.

The terminal portions 13 a and 13 b are conductor patterns formed on the insulating layer of the substrate 11. Although illustration is omitted, power supply wiring for connecting the terminal portions 13 a and 13 b and the light emitting portion 12 is provided on the substrate 11.
(Holder 30)
As shown in FIG. 2A, the holder 30 has a rectangular plate shape as a whole, and an opening 33 is formed in the central portion for allowing light emitted from the light emitting unit 12 of the light emitting module 10 to pass upward. Yes.

The holder 30 includes a cover part 31 that covers the light emitting module 10 and a peripheral wall part 32 that extends outward from the periphery of the cover part 31 and surrounds the outer periphery of the cover part 31. The cover portion 31 has a rectangular shape that is substantially the same size as the light emitting module 10.
2A, when the holder 30 is viewed from above, the boundary between the cover portion 31 and the peripheral wall portion 32 is not visible. However, as shown in FIG. The rectangular recess 310 exists, and the area of the recess 310 corresponds to the area of the cover 31. The outer peripheral portion surrounding the outer side of the recess 310 corresponds to the peripheral wall portion 32.

That is, the lower portion of the peripheral wall portion 32 protrudes downward (base 20 side) from the lower surface of the cover portion 31. The light emitting module 10 is inserted into the recess 310 below the cover portion 31 and attached.
As shown in FIGS. 3A and 3B, the lower end portion of the peripheral wall portion 32 surrounds the substrate 11 of the light emitting module 10 when the holder 30 is mounted on the light emitting module 10.

The holder 30 is formed by, for example, injection molding a material obtained by mixing a white pigment in a resin such as polybutylene terephthalate (PBT). The dimensions of the holder 30 are, for example, 60 mm long, 40 mm wide, and 5 mm thick.
A lower inner peripheral surface 331 in the opening 33 has a size slightly larger than the size of the light emitting unit 12, and surrounds the periphery of the light emitting unit 12 when the holder 30 is mounted on the light emitting module 10. The upper inner peripheral surface 332 of the opening 33 is formed in a tapered shape so as to expand upward, and efficiently reflects light from the light emitting unit 12 upward.

As shown in FIG. 2, the peripheral wall portion 32 of the holder 30 is provided with a mounting claw 35 projecting forward at the front end portion 32a, and a screw mounting portion 36 projecting rearward at the rear end portion 32b. .
The mounting claw 35 has a shape protruding forward from the front side surface 301 of the holder 30 and bent downward in a crank shape. That is, the mounting claw 35 is bent from the front end 301 of the holder 30, the lower extension 352 bent downward from the front end of the base end 351, and bent from the lower end of the lower extension 352. It is comprised from the front-end | tip part 353 extended ahead.

The attachment claw 35 is preferably molded integrally with the main body of the holder 30, but may be made of metal or the like separately from the main body of the holder 30 and attached to the main body of the holder 30.
On the other hand, the screw attachment portion 36 protrudes rearward from the rear side surface 302 of the holder 30 and has an insertion hole 36a through which the assembly screw 39 is inserted.
(Base 20)
The base 20 is a metal plate-like member with good heat dissipation, and has a mounting region 21 for mounting the light emitting module 10 at the center of the upper surface thereof as shown in FIG. Further, a locking hole 22 for locking the mounting claw 35 of the holder 30 is provided in front of the mounting area 21 in the base 20, and an assembly screw 39 is provided at a position corresponding to the insertion hole 36a at the rear of the mounting area 21. A screw hole 23 to be screwed is provided.

The locking hole 22 is larger in size than the tip 353 and the downward extending portion 352 of the mounting claw 35, and the mounting claw 35 has a certain amount in the YZ plane when the mounting claw 35 is inserted therein. The range can be rotated (see FIG. 5A).
(Dimension regulation of each part in the holder 30)
Although the process of fixing the light emitting module 10 to the base 20 will be described, the light emitting module 10 can be pressed and fixed to the base 20 by the holder 30.
Here, the dimension of each part in the holder 30 is prescribed | regulated as follows so that the light emitting module 10 can be pressed firmly.

FIG. 4A is a diagram showing the relationship between the dimensions of each part in the holder 30 and the thicknesses of the substrate 11 and the base 20 of the light emitting module 10.
The depth of the recess 310 on the lower surface side of the cover portion 31 in the holder 30 (the vertical distance between the lower surface 311 of the cover portion 31 and the lower surface 321 of the peripheral wall portion 32) B is greater than the thickness A of the substrate 11 of the light emitting module 10. Is set smaller (thickness A> depth B of recess 310).

By defining the dimensions in this way, the light emitting module can be firmly pressed against the base 20 with the holder 30.
In addition, in order to firmly fix the front end portion of the holder 30 to the base 20, the vertical distance D between the upper surface of the tip portion 353 of the mounting claw 35 and the lower surface 311 of the cover portion 31 is the thickness A of the substrate 11 and the thickness of the base 20. It is preferable to set to be equal to or slightly smaller than the sum of C, that is, to set thickness (A + C) ≧ distance D.

(Power supply path to the light emitting module 10)
The wiring member 40 has a pair of lead wires 41a and 41b. The lead wires 41 a and 41 b are electrically connected to the terminal portions 13 a and 13 b of the light emitting module 10 via connection terminals 51 and 52 housed in the holder 30.
The lead wires 41a and 41b are led out to the outside of the lighting device 6 below the base 20, and a connector 72 is attached to the end thereof.

As shown in FIG. 2B, concave portions 37 and 38 are provided on the lower surface side of the holder 30 on the right side and the left side, and the connection terminals 51 and 52 are fitted therein. The pair of connection terminals 51 and 52 are for connecting the lead wires 41 a and 41 b to the terminal portions 13 a and 13 b of the light emitting module 10.
As shown in FIG. 2, the connection terminals 51 and 52 are members formed in a box shape by bending a conductive plate. The connection terminal 51 has a contact portion 511 that contacts the terminal portion 13a on the lower end side, and a lead insertion portion 512 into which the lead wire 41a is inserted on the right side. The connection terminal 52 also has a contact portion 521 that contacts the terminal portion 13b on the lower end side, and a lead insertion portion 522 into which the lead wire 41b is inserted on the left side.

The contact part 511 and the contact part 521 are formed in a tongue shape and have elasticity. When the cover part 31 of the holder 30 is pressing the light emitting module 10, the contact part 511 and the terminal part 13a contact, and the contact part 521 and the terminal part 13b also contact.
Further, a through hole 34 communicating with the concave portion 37 is formed from the right side surface 303 of the holder 30, and a through hole 34 communicating similarly with the concave portion 38 is also formed from the left side surface 304 of the holder 30. The lead wires 41a and 41b are inserted and connected to the lead insertion portions 512 and 522 of the connection terminals 51 and 52 that are inserted into the recesses 37 and 38 through the through holes.

Thus, since the lead wires 41a and 41b are connected to the terminal portions 13a and 13b via the connection terminals 51 and 52, the power supplied from the outside to the connector 72 is supplied to the light emitting module 10 via the holder 30. Is done.
(Step of fixing the light emitting module 10 to the base 20 with the holder 30)
The process of fixing the light emitting module 10 on the base 20 with the holder 30 will be described with reference to FIGS.

  As shown in FIG. 5A, the worker mounts the light emitting module 10 on the mounting region 21 of the base 20 and inserts the tip 353 of the mounting claw 35 of the holder 30 into the locking hole 22 of the base 20. And temporarily fix it. At this time, the holder 30 is inclined with respect to the base 20, and the tip portion 353 of the mounting claw 35 can be easily inserted into the locking hole 22 by being inserted obliquely above the locking hole 22.

With the mounting claw 35 locked in the locking hole 22, the operator rotates the holder 30 around the locked position as shown by an arrow in FIG. The holder 30 is covered on the light emitting module 10.
At this time, since the attachment claw 35 of the holder 30 is already temporarily fixed to the locking hole 22, it is easy to align the positions of the cover portion 31 and the light emitting module 10.

Next, as shown in FIGS. 5B and 5C, the assembly screw 39 is inserted into the screw mounting portion 36 of the holder 30 and screwed into the screw hole 23 of the base 20 and tightened.
Here, since it is set as described above (thickness A of the substrate 11> depth B of the recess 310), the lower surface side of the cover portion 31 at the center of the holder 30 is below the substrate 11 of the light emitting module 10. It is in a state supported by.

Therefore, as the screw mounting portion 36 of the holder 30 is screwed to the base 20, the mounting claw 35 on the front end side of the holder 30 is pushed upward, and the tip portion 353 of the mounting claw 35 is engaged with the locking hole 22. Near the lower surface of the base 20.
Therefore, as the screw attachment portion 36 of the holder 30 is fastened to the base 20, the attachment claw 35 is also tightened at the locking hole 22 of the base 20.

Here, it is preferable that the thickness (A + C) ≧ distance D is set as described above in order to achieve good tightening of the mounting claws 35 to the base 20 along with the screw tightening by the assembly screw 39.
In FIG.4 (b), force f1-f3 added to each part of the holder 30 with such fastening is shown.

A downward force f1 is applied to the rear end portion 32b of the holder 30 by the assembly screw 39, an upward force f2 is applied to the cover portion 31 at the center of the holder 30 from the light emitting module 10, and a base portion is applied to the front end portion 32a of the holder 30. A downward force f3 from 20 is applied.
In this manner, the holder 30 has the front end portion 32 a and the rear end portion 32 b fastened to the base 20 and fixed in a state where the light emitting module 10 is pressed against the base 20.

(Effects of the lighting device 6)
As described above, according to the lighting device 6, in the process of attaching and fixing the holder 30 to the base 20, the front end portion 32 a and the rear end of the peripheral wall portion 32 of the holder 30 can be screwed at only one location. The portion 32b can be fixed to the base 20. Along with this, the light emitting module 10 is fixed in a state of being pressed against the base 20 by the cover portion 31 of the holder 30, so that heat dissipation from the light emitting module 10 to the base 20 can be ensured well.

In particular, in the holder 30, the front end portion 32 a provided with the attachment claw 35 and the rear end portion 32 b provided with the screw attachment portion 36 are at positions facing the front and rear across the cover portion 31. It can be stably pressed against the base 20.
Compared to the conventional method of fixing the holder to the base with two or more screws, there are fewer screwing points, so the number of screwing steps can be reduced and the number of parts (screws) used Can also be reduced.

  Further, when the holder is screwed to the base as in the prior art, it takes time and effort to align the screw hole of the holder and the screw hole of the base when screwing for the first time. On the other hand, according to the illuminating device 6, the attachment claw 35 can be easily temporarily fixed by being engaged with the engagement hole 22 of the base 20. Also in this respect, the workability of attaching the holder 30 to the base 20 is improved, and the manufacturing cost of the lighting device is reduced.

(Downlight 1 using lighting device 6)
An example of a downlight using the illumination device 6 will be described.
FIG. 6 is a cross-sectional view showing a state in which the downlight 1 including the lighting device 6 is attached to the ceiling 2.
In addition to the lighting device 6, the downlight 1 includes a metal plate 2, an appliance housing 3, a power supply unit 4, and a connection member 5 attached to the lower side of the metal plate 2.

The instrument housing 3 has a cylindrical shape whose diameter expands downward. The power supply unit 4 incorporates a circuit for lighting the lighting device 6. The connecting member 5 hangs downward from the metal plate 5 of the appliance housing 3, and the lighting device 6 is attached to the lower end of the connecting member 5.
The power supply unit 4 includes a power supply line 4a that is electrically connected to the illumination device 6, and a connector 4b that is detachably connected to the connector 42 of the illumination device 6 is attached to the tip of the power supply line 4a.

The downlight 1 is used by being embedded in an embedding hole penetrating the ceiling.
[Embodiment 2]
FIGS. 7A to 7D are diagrams illustrating the configuration of the illumination device 7 according to the second embodiment. In the figure, the same components as those in the first embodiment are given the same reference numerals.
FIG. 7A is a perspective view of the main part of the illumination device 7, and FIG. 7B is a perspective view showing the front portion of the base 20 and the holder 30.

The illuminating device 7 has the same configuration as the illuminating device 6 of the first embodiment, but in the front of the mounting area 21 in the base 20, in the form of a hood (a hood) that protrudes upward instead of the locking hole 22. A locking portion 122 is formed.
Further, instead of the crank-shaped mounting claw 35, a mounting claw 135 that extends straight forward from the front side surface 301 is formed on the front end portion 32a of the holder 30.

FIG. 7C is a view of the locking portion 122 as viewed obliquely from the rear, and FIG. 7D is a cross-sectional view of the base 20 and the holder 30.
An inner space 123 is formed in the locking portion 122, and the rear is open. The internal space 123 penetrates the base 20 and communicates with the lower surface side of the base 20.
Also in this lighting device 7, the process of attaching and fixing the holder 30 to the base 20 is the same as in the first embodiment. First, the attachment claw 135 of the holder 30 is inserted into the internal space 123 from the opening of the locking portion 122. Then, the attachment claw 135 is borrowed to the locking portion 122.

Here, since the internal space 123 penetrates the base 20, the attachment claw 135 can be inserted into the internal space 123 from obliquely above the locking portion 122.
Then, with the attachment claw 135 locked to the locking portion 122, the operator rotates the holder 30 to approach the base 20 and covers the holder 30 on the light emitting module 10. Then, the screw mounting portion 36 of the holder 30 is fastened to the base 20 with the assembly screw 39.

  Also in the lighting device 7, as described in the first embodiment, since (the thickness A of the substrate 11> the depth B of the concave portion 310 of the holder 30) is set, the screw mounting portion 36 of the holder 30 is set to the base 20. As a result, the attachment claw 135 of the holder 30 is pressed against the upper inner surface 122 a of the locking portion 122. Therefore, as the screw attachment portion 36 of the holder 30 is fastened to the base 20, the attachment claw 135 is also fastened to the locking portion 122 of the base 20.

  In the lighting device 7, the height E from the upper surface of the base 20 to the inner surface 122 a of the upper portion of the locking portion 122 is set to the upper surface of the mounting claw 135 in order to firmly fix the front end of the holder 30 to the base 20. Is preferably set to be equal to or slightly smaller than the sum of the vertical distance F between the cover portion 31 and the lower surface 311 of the cover portion 31 and the thickness A of the substrate 11 ((F + A) ≧ E).

The lighting device 7 also has the same effect as that of the lighting device 6 of the first embodiment (that is, the heat dissipation is good and the number of steps for screwing can be reduced, and the mounting claw 135 can be easily attached to the locking portion 122 of the base 20. The effect of attaching the holder 30 to the base 20 is improved, and the manufacturing cost of the lighting device is also reduced.
Moreover, in the illuminating device 7 of this embodiment, since the latching | locking part 122 is protruded and provided from the upper surface of the base 20, it can implement even if the base 20 is not plate-shaped.

[Embodiment 3]
FIGS. 8A to 8C are diagrams illustrating the configuration of the illumination device 8 according to the third embodiment. In the figure, the same components as those in the first embodiment are given the same reference numerals.
FIG. 8A is a perspective view of the main part of the lighting device 8, FIG. 8B is a side view thereof, and FIG. 8C is a perspective view showing a rear portion of the holder 30 and the base 20.

The illuminating device 8 has the same configuration as the illuminating device 6 of the first embodiment, but uses a hook instead of a screw as a fastening means for fastening the rear end portion 32 b of the holder 30 to the base 20.
Therefore, the rear end portion 32b of the holder 30 is provided with hooks 43 and 44 extending downward from the rear side surface 302 so as to be separated from each other in the left and right directions, instead of the screw attachment portion 36. The tip portions 431 and 441 of the hooks 43 and 44 are bent rearward to have a hook shape. On the other hand, in the base 20, in place of the screw hole 23, locking holes 24 and 25 for inserting and locking the tip portions 431 and 441 of the hooks 43 and 44 are opened.

The lengths of the hooks 43 and 44 are set so that the rear end portion 32b of the holder 30 can be fastened to the base 20 when the hooks 43 and 44 are locked in the locking holes 24 and 25. Specifically, it is preferable that the distance from the lower surface of the peripheral wall portion 32 to the upper surfaces of the tip portions 431 and 441 of the hooks 43 and 44 is approximately the same as the thickness of the base 20 (see FIG. 8B).
Also in the lighting device 8, the process of attaching and fixing the holder 30 to the base 20 is the same as in the first embodiment. First, the attachment claw 35 of the holder 30 is borrowed to the engagement hole 22 and the attachment claw 35 is attached. The operator rotates the holder 30 so that the holder 30 is brought close to the base 20 and covers the light emitting module 10 on the light emitting module 10.

  And as shown in FIG.8 (c), the front-end | tip parts 431 and 441 of the hooks 43 and 44 are inserted in the locking holes 24 and 25, the holder 30 is pressed down, and the light emitting module 10 is pressed by the cover part 31, In this state, the end portions 431 and 441 of the hooks 43 and 44 are locked in the locking holes 24 and 25. Thus, the rear end portion 32 b of the holder 30 can be easily fastened to the base 20 by the hooks 43 and 44 being locked.

In the lighting device 8 as well, as described in the first embodiment (the thickness A of the substrate 11> the depth B of the concave portion 310 of the holder 30), the holder is attached as the hooks 43 and 44 are fastened. The 30 attachment claws 35 are fastened to the locking holes 22 of the base 20.
As described above, in the lighting device 8 of the present embodiment, in addition to the effect that the mounting claws 35 can be easily temporarily fixed to the locking holes 22 of the base 20 as in the first embodiment, the rear end portion 32b of the holder 30 is provided. There is no need to tighten with screws, and the rear end portion 32b of the holder 30 can be easily tightened to the base 20 by the hooks 43 and 44 being locked.

Therefore, the workability of attaching the holder 30 to the base 20 is further improved, and the manufacturing cost of the lighting device can be reduced.
In the lighting device 8, the holder 30 can be stably fastened to the base 20 by separately providing the hooks 43 and 44 at the rear end portion 32b of the holder 30, but the hook is fixed to the rear end portion 32b of the holder 30. Even if one is provided in the center, it can be implemented.

[Embodiment 4]
FIG. 9A is an essential part exploded view showing the configuration of the illumination device 60 according to the fourth embodiment.
The illuminating device 60 has the same configuration as that of the illuminating device 6 of the first embodiment, but a holder 130 is used instead of the holder 30.
FIG. 9B is an essential part exploded view of the holder 130 as viewed from below.

The holder 130 generally has the same configuration as the holder 30, and includes a cover portion 31 that covers the light emitting module 10 in the center portion and a peripheral wall portion 32 around the cover portion 31. A pressing plate 62 is mounted via four coil springs 61 that are elastic bodies.
In the holder 130, the depth of the recess on the lower surface side of the cover portion 31 is set deeper than that of the holder 30 so that the coil spring 61, the holding plate 62, and the like can be attached.

In a state where the holder 130 is mounted on the light emitting module 10 on the base 20, the cover portion 31 of the holder 130 is in a state of pressing the light emitting module 10 via the coil spring 61 (see FIG. 10B). .
The pressing plate 62 has a rectangular frame shape, and can press the substrate 11 outside the light emitting unit 12 in the light emitting module 10. The holding plate 62 is formed with notches 65 at positions corresponding to the terminal portions 13 a and 13 b, and the contact portions 511 and 521 of the connection terminals 51 and 52 do not interfere with the holding plate 62 and the terminal portions 13 a and 13 b. Can be contacted with.

The four coil springs 61 are arranged at the four corners between the cover portion 31 and the pressing plate 62. At these four corners, an upper rib 63 is provided on the lower surface of the cover portion 31, and a lower rib 64 is provided on the upper surface of the pressing plate 62. The upper and lower ends of each coil spring 61 are fitted into the upper rib 63 and the lower rib 64 and held at each position.
In this way, the holding plate 62 is mounted in the recess on the lower surface side of the cover portion 31 via the four coil springs 61.

(Step of fixing the light emitting module 10 to the base 20 with the holder 130)
A process of fixing the light emitting module 10 on the base 20 with the holder 130 will be described with reference to FIGS. 10, (a) to (c) are cross-sectional views cut in the vertical direction, and show the state of the holder 130 with respect to the base 20. (D)-(f) is sectional drawing which cut | disconnected the location of the through-hole 34 in the holder 130 in the horizontal direction, Comprising: The coil spring 61 and the pressing board 62 corresponding to each said state of (a)-(c) are shown. Indicates the state.

  As shown in FIG. 10A, the worker mounts the light emitting module 10 on the mounting region 21 of the base 20, and locks the attachment claw 35 of the holder 130 in the locking hole 22 of the base 20 to temporarily fix it. To do. In this state, no pressing force is applied to the pressing plate 62 as shown in FIG. Accordingly, the coil spring 61 is in an extended state, and the holding plate 62 is also located slightly below the lower surface of the holder 130.

  In a state where the mounting claw 35 is locked in the locking hole 22, the operator rotates the holder 30 with the locked position as a fulcrum, and approaches the base 20 as shown in FIG. 30 is covered on the light emitting module 10. At this time, since the mounting claw 35 of the holder 130 is already temporarily fixed to the locking hole 22, the alignment of the cover portion 31 and the light emitting module 10 is easy.

In this state, as shown in FIG. 10 (e), the pressing plate 62 contacts the substrate 11, the pressing plate 62 slightly presses the substrate 11, and the pressing plate 62 is also in the recess 310 on the lower surface side of the holder 130. Although slightly pushed in, the contact portion 511 of the connection terminal 51 is not in contact with the terminal portion 13 a on the substrate 11.
As shown in FIG. 10C, the worker fastens the screw mounting portion 36 of the holder 30 to the base 20 with the assembly screw 39.

In this state, the pressing plate 62 strongly presses the substrate 11 and the compressive force applied to the coil spring 61 is also large. Then, as shown in FIG. 10 (f), the pressing plate 62 is pushed into the recess 310 on the lower surface side of the holder 130, and the contact portion 511 of the connection terminal 51 comes into contact with the terminal portion 13 a on the substrate 11.
Thus, when the pressing force for the holder 130 to press the light emitting module 10 is sufficiently applied, the lighting device 60 comes into contact with the connection terminals 51 and 52 and the terminal portions 13a and 13b, and the pressing force is lowered slightly. Then it becomes non-contact.

(Effect by lighting device 60)
The illuminating device 60 of the present embodiment has good heat dissipation as in the illuminating device 6 of the first embodiment, can reduce the man-hours to be screwed, and easily attach the mounting claw 35 to the engaging portion 122 of the base 20. An effect that can be stopped is obtained.
Further, in the lighting device 60, the pressing plate 62 continues to press the light emitting module 10 against the base 20 by the biasing force of the coil spring 61 even when the assembly screw 39 is somewhat loosened during use of the device. Heat dissipation can be maintained.

In particular, since the coil spring 61 has a long expansion / contraction stroke and good durability, the light emitting module 10 can be stably pressed over a long period of time.
Further, when the assembly screw 39 is considerably loosened during use of the apparatus, the holder 130 is separated from the base 20 by the urging force of the coil spring 61, and the same state as in FIGS. 10B and 10E is obtained. The connection terminals 51 and 52 and the terminal portions 13a and 13b are not in contact with each other, and power supply to the light emitting module 10 is stopped.

In other words, the lighting device 60 has a function as a safety device that stops power supply to the light emitting module 10 when the force for pressing the light emitting module 10 against the base 20 is weakened and it becomes difficult to sufficiently ensure heat dissipation. ing.
[Embodiment 5]
The illumination device according to the fifth embodiment is the same as the illumination device 60 according to the fourth embodiment, but the elastic body used for the holder 130 is different.

That is, the holder 130 is the same as the fourth embodiment in that the pressing plate 62 is attached to the recess on the lower surface side of the cover portion 31 via the elastic body. However, in the present embodiment, the elastic body A rubber tube (FIG. 11) or a leaf spring (FIG. 12) is used.
FIG. 11A is an example in which a rubber tube is used as an elastic body, and is an exploded perspective view of the holder 130 as viewed from below.

In the example shown in FIG. 11A, a pair of rubber tubes 66 extending in the lateral direction is attached to the lower surface side of the cover portion 31 in the holder 130, and a pressing plate 62 is placed under the pair of rubber tubes 66. It is attached.
The process of fixing the light emitting module 10 to the base 20 with the holder 130 is the same as that described in the fourth embodiment.

  11B and 11C are cross-sectional views in which the central portion of the holder 130 is cut in the lateral direction. FIG. 11B shows that the pressing plate 62 is separated from the light emitting module 10 and the pressing force is The state of the rubber tube 66 and the presser plate 62 when not applied is shown. At this time, the rubber tube 66 is not compressed and is stretched, and the pressing plate 62 is also located near the lower surface of the holder 130.

FIG. 11B shows a state of the rubber tube 66 and the pressing plate 62 when the pressing plate 62 presses the light emitting module 10 as indicated by an arrow in the drawing. At this time, the rubber tube 66 is compressed in the vertical direction, and the pressing plate 62 is pushed into the recess 310 on the lower surface side of the holder 130.
The contact portions 511 and 521 of the connection terminals 51 and 52 are not in contact with the terminal portions 13a and 13b on the substrate 11 in the state of FIG. 11B, and are on the substrate 11 in the state of FIG. It contacts the terminal portions 13a and 13b.

As described above, when the rubber tube 66 is used as the elastic body, the pressing plate 62 operates in the same manner as when the coil spring 61 is used. Therefore, the same effect as that of the lighting device 60 described in the fourth embodiment is obtained. be able to.
However, when the coil spring 61 and the rubber tube 66 are compared, the coil spring 61 has better durability and a longer stroke. On the other hand, when the rubber tube 66 is used, the pressing plate 62 can be stably mounted under the cover portion 31 of the holder 130. Also, the rubber tube 66 and the holding plate 62 can be easily mounted, and the internal configuration of the holder 130 is relatively simple.

FIG. 12 shows an example in which a leaf spring is used as an elastic body, (a) is an exploded perspective view of the holder 130 viewed from below, and (b) is a part of the holder 130 cut in the vertical and horizontal directions. It is a perspective view.
In the example shown in FIG. 12, four leaf springs 67 are attached to the lower surface side of the cover portion 31 in the holder 130, and a pressing plate 62 is attached below them.

Each leaf spring 67 is formed by bending an elastic plate into an S shape, and includes a support portion 671 fixed to the cover portion 31 of the holder 130, and an expansion / contraction portion 672 that elastically deforms in the vertical direction when pressure is applied. Have.
The support portion 671 is fixed by being fitted into a recess 68 provided on the lower surface of the cover portion 31. The lower end of the expansion / contraction part 672 is fitted into a recess 69 formed on the upper surface of the pressing plate 62 and joined thereto.

Also in this holder 130, the process of fixing the light emitting module 10 to the base 20 is the same as that described in the fourth embodiment.
12C and 12D are cross-sectional views in which the central portion of the holder 130 is cut in the lateral direction. FIG. 12C shows that the pressing plate 62 is separated from the light emitting module 10 and the pressing force is The state of the leaf spring 67 and the presser plate 62 when not applied is shown. At this time, the leaf spring 67 is not compressed and is in an expanded state, and the holding plate 62 is also located near the lower surface of the holder 130.

FIG. 12D shows the state of the leaf spring 67 and the pressure plate 62 when the pressure plate 62 is pressing the light emitting module 10 as indicated by the arrows in the drawing. At this time, the leaf spring 67 is compressed in the vertical direction, and the holding plate 62 is pushed into the recess 310 on the lower surface side of the holder 130.
The contact portions 511 and 521 of the connection terminals 51 and 52 are not in contact with the terminal portions 13a and 13b on the substrate 11 in the state of FIG. 12C, and on the substrate 11 in the state of FIG. It contacts the terminal portions 13a and 13b.

As described above, when the leaf spring 67 is used as the elastic body, the pressing plate 62 operates in the same manner as when the coil spring 61 is used. Therefore, the same effect as that of the lighting device 60 described in the fourth embodiment is obtained. be able to.
However, when the coil spring 61 and the leaf spring 67 are compared, the coil spring 61 has a longer stroke, but the coil spring 61 is easier to mount under the cover portion 31.

[Variations etc.]
1. FIGS. 13A and 13B are diagrams illustrating a modification of the lighting apparatus according to the first embodiment.
In the first embodiment, one mounting claw 35 is provided at the front end portion of the holder 30 and one locking hole 22 is provided at the base 20. However, in this deformability, the mounting claw 35 a is provided at the front end portion of the holder 30. , 35b and the base 20 are provided with locking holes 22a, 22b which are divided into left and right sides.

As described above, the number of attachment claws provided on the holder and the number of engaging portions provided on the base may be plural.
2. In Embodiments 1 and 3 to 5, the tip 353 of the mounting claw 35 protrudes forward (that is, outward of the holder), but the tip of the mounting claw faces rearward (inward of the holder). In the case of projecting, it can be carried out in the same manner by engaging with the engaging portion of the base 20. That is, the same can be done when the mounting claw has a U-shape.

However, it is easier to lock the mounting claw to the locking portion when the tip of the mounting claw is directed to the outside of the holder than to the inner side of the holder. Further, as the rear end portion of the holder is tightened to the base, the attachment claw at the front end portion is easily tightened to the base.
3. In the said Embodiment 1-5, although the shape of the holder was a rectangular plate shape, the shape of a holder is not specifically limited.

  FIG. 13C shows a circular plate-like holder 230 as a modification of the holder 30 of the first embodiment. In the holder 230, a mounting claw 35 is provided at the front end portion, a screw mounting portion 36a is protruded from the right rear end portion, and a screw mounting portion 36b is protruded from the left rear end portion. FIG. 13D shows a base 220 corresponding to the holder 230. In the base 220, a locking hole 22 for locking the mounting claw 35 and screw holes 23a and 23b corresponding to the screw mounting portions 36a and 36b are formed.

A lighting device using such a holder 230 and base 220 can also be implemented, and similar effects can be obtained.
4). Regarding the shape of the light emitting module, the shape of the substrate 11 is not limited to a rectangular shape, and may be, for example, a circular shape or a polygonal shape having five or more corners. Further, the shapes of the light emitting unit 12 and the opening 33 are not limited to a square, and may be, for example, a circular shape or a polygonal shape having five or more corners.
5. In the holders 30 and 130 according to the above embodiment, the peripheral wall portion 32 protrudes downward from the cover portion 31, but the lower surface of the cover portion 31 and the peripheral wall portion 32 may be flush.

In this case, the concave portion 310 into which the light emitting module 10 is fitted is not formed on the lower surface side of the holder, but similarly, the light emitting module 10 placed on the mounting region 21 of the base 20 can be fixed with the holder.
6). In the above-described embodiment, the downlight illumination device has been described as an example. However, the present invention can be similarly applied to a light bulb-type illumination device.

DESCRIPTION OF SYMBOLS 1 Downlight 6-8 Illuminating device 10 Light emitting module 11 Board | substrate 12 Light emission part 13a, 13b Terminal part 14 Light emitting element 20 Base 21 Mounting area 22 Locking hole 22a, 22b Locking hole 23 Screw hole 23a, 23b Screw hole 24, 25 Locking hole 30 Holder 31 Cover part 32 Peripheral wall part 32a Front end part 32b Rear end part 33 Opening part 43, 44 Hook 51, 52 Connection terminal 60 Illuminating device 61 Coil spring 62 Holding plate 66 Rubber tube 122 Locking part 123 Internal space 130 Holder 135 Mounting Claw 351 Base End 352 Downward Extension 353 Tip

Claims (9)

A base part, a light emitting module mounted on the base part and having a light emitting part in which a light emitting element is mounted on a substrate, and a holder that covers the light emitting module,
The holder is
A cover portion having an opening in a region corresponding to the light emitting portion, and a peripheral wall portion extending outward from the periphery of the cover portion;
A mounting claw is provided on the first portion of the peripheral wall,
The base portion is provided with a locking portion for locking the mounting claw,
The mounting claw is locked to the locking portion, and the second portion of the peripheral wall portion away from the first portion is fastened to the base portion by fastening means.
The peripheral wall portion is fixed to the base portion with the cover portion pressing the light emitting module against the base portion.
Lighting device. In the peripheral wall portion,
The first part and the second part are at positions facing each other with the cover part interposed therebetween,
The lighting device according to claim 1. A power supply terminal is provided on the substrate in the light emitting module,
The holder is attached with a connection terminal that contacts the power supply terminal in a state where the holder is attached to the light emitting module.
The lighting device according to claim 1. The connection terminal is
When the pressing force of the cover portion against the light emitting module is lowered, the cover portion is attached to the holder so as not to be in contact with the power supply terminal.
The lighting device according to claim 3. In the holder,
The peripheral wall portion projects to the base side from the base side surface of the cover portion,
The protrusion amount is smaller than the thickness of the substrate.
The illuminating device in any one of Claims 1-4. An elastic body is provided on a surface of the cover portion facing the light emitting module,
The cover part presses the light emitting module to the base part via the elastic body,
The illuminating device in any one of Claims 1-4. The tip portion of the mounting claw protrudes outward of the holder,
The illuminating device in any one of Claims 1-6. The fastening means is a screw;
The illuminating device in any one of Claims 1-7. A holder for covering the light emitting module, used in a lighting device comprising a base portion and a light emitting module having a light emitting portion mounted on the substrate and mounted with a light emitting element on the substrate;
A cover portion having an opening in a region corresponding to the light emitting portion, and a peripheral wall portion extending outward from a peripheral edge of the cover portion, and a mounting claw is provided in a first portion of the peripheral wall portion. ,
The mounting claw is locked to the locking portion of the base portion, and the second portion of the peripheral wall portion away from the first portion is fastened to the base portion by fastening means.
The peripheral wall portion is fixed to the base portion with the cover portion pressing the light emitting module against the base portion.
holder.

Images