JP7168904B2 - lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a lighting device using a light-emitting module.

Conventionally, in a lighting device using a light-emitting module, the other surface of the substrate of the light-emitting module is arranged on a radiator in order to efficiently dissipate the heat generated by the light-emitting portion provided on one surface of the substrate of the light-emitting module. .

The radiator is provided with a flat placement surface where the light emitting module is placed, and the entire other surface of the substrate is placed in direct or indirect contact with this placement surface.

By the way, on one surface of the substrate, in addition to the light emitting portion, a terminal portion or the like connected to the light emitting portion for supplying power is provided, and the terminal portion or the like is often located in the peripheral portion of the substrate. . Therefore, if the distance between the edge of the substrate and the terminal portion or the like is short, the insulation distance between the terminal portion or the like of the substrate and the heat radiator is shortened, and the insulating property is deteriorated. Arranging the terminals and the like at the inner position away from the edge of the substrate makes the substrate large, which is not preferable.

JP 2016-181435 A

An object of the present invention is to provide a lighting device that can ensure heat dissipation and insulation.

A lighting device according to an embodiment includes a radiator and a light-emitting module. The radiator includes a first surface, a projection projecting from the first surface and having a contact portion and a pair of mounting portions projecting from both ends of the contact portion, and provided on the contact portion of the projection . and the pair of mounting portions are smaller than the width of both ends of the contact portion. A light-emitting module includes a substrate, a light-emitting portion provided in a central region on one surface of the substrate , and a terminal portion provided in a peripheral region on one surface of the substrate and connected to the light- emitting portion. The central area of the other surface is arranged on the second surface of the contact portion of the radiator , and the other surface of the substrate is brought into contact with the contact portion by a socket attached to the mounting portion, and the terminal portion of the substrate is provided. The peripheral area of the radiator is arranged to face the first surface outside the second surface of the radiator.

According to the lighting device of the embodiment, it can be expected to ensure heat dissipation and insulation.

It is a cross-sectional view of a lamp body of the lighting device showing the first embodiment. Fig. 2 is a perspective view showing attachment of parts to a radiator of the lamp body; FIG. 3 is a perspective view showing the attachment of parts to the radiator of the lamp following FIG. 2; FIG. 4 is a perspective view showing the attachment of parts to the radiator of the lamp following FIG. 3; Fig. 3 is a perspective view showing how parts are attached to a radiator of the same lamp. Fig. 3 is a perspective view of the same lamp body; Fig. 3 is a cross-sectional view of the same lamp body; It is a top view of an illuminating device same as the above. It is a perspective view of the lamp body of the lighting device showing the second embodiment.

A first embodiment will be described below with reference to FIGS. 1 to 8. FIG.

FIG. 8 shows a plan view of the illumination device 10. As shown in FIG. The illuminating device 10 is an embedded illuminating device such as a downlight embedded in an opening provided in a ceiling plate.

The lighting device 10 includes a lamp body 11, a power supply section 12 that supplies power to the lamp body 11, a connection line 13 that electrically connects the lamp body 11 and the power supply section 12, and a lamp body 11 and the power supply section 12. It has a sling 14 that mechanically connects the That is, the illumination device 10 is of a separate power supply type, the power supply unit 12 is installed on the ceiling plate, and the lamp body 11 is installed in the opening of the ceiling plate.

FIG. 6 shows a perspective view of the lamp body 11, and FIG. 7 shows a sectional view of the lamp body 11. As shown in FIG. The lamp body 11 includes a radiator 17, a decorative frame 18 attached to the lower side of the radiator 17, a light emitting module 19, a mounting base 20, a reflector 21, and a lens 22, which are respectively arranged in the radiator 17. , and a reflector 23 attached to the decorative frame 18 .

The radiator 17 is made of metal, such as aluminum die-cast, and is integrally formed. The radiator 17 includes a body portion 26 , a plurality of fins 27 projecting upward from the body portion 26 , and a wiring portion 28 provided on the body portion 26 .

The body portion 26 includes an upper surface portion 30, a peripheral surface portion 31 provided downward from the peripheral portion of the upper surface portion 30, and a flange portion 32 provided outward from the lower end of the peripheral surface portion 31, The inside of the peripheral surface portion 31 is opened downward.

As shown in FIGS. 1, 2 and 7, the inner surface (lower surface) of the upper surface portion 26 of the radiator 17 is provided with a first surface 34 and a second surface provided in the inner region of the first surface 34. It has a surface 35 and a third surface 36 located in the outer region of the first surface 34 . A first stepped portion 37 is provided between the first surface 34 and the second surface 35 so that the second surface 35 projects beyond the first surface 34 . A second stepped portion 38 is provided between the first surface 34 and the third surface 36 so that the third surface 36 is recessed from the first surface 34 .

The first surface 34 has a circular outer shape. The first surface 34 is provided with a plurality of mounting holes 34a for screwing the mounting base 20 thereon.

The second surface 35 is formed by a projection 39 projecting from the inner region of the first surface 34. As shown in FIG. The projecting portion 39 has a substantially rectangular contact portion 40 and a pair of mounting portions 41 projecting from both ends of the contact portion 40 in the longitudinal direction. The second surface 35 is provided on the contact portion 40 of the protrusion 39 and is arranged in a state in which the light emitting module 19 is thermally connected. The contact portion 40 is arranged at the center of the upper surface portion 30 of the radiator 17 . Each mounting portion 41 is provided to be smaller than the width of the contact portion 40 in the lateral direction. Each mounting portion 41 is provided with a positioning hole 42 and a mounting hole 43 for screwing. In this embodiment, the pair of mounting portions 41 of the projecting portion 39 protrude to the same height as the contact portion 40, and are continuous with the second surface 35. may be lower, or may be the same surface as the first surface 34.

A third surface 36 is annularly formed between the first surface 34 and the peripheral surface portion 31 .

Then, the second surface 35 is subjected to surface treatment such as grinding, and its flatness and smoothness are enhanced so as to enhance adhesion to the light emitting module. The first surface 34 is also subjected to surface treatment such as grinding. This is because when the second surface 35 is subjected to surface treatment such as grinding, the dimension of the step between the first surface 34 and the second surface 35 varies. The first surface 34 is also subjected to surface treatment such as grinding so that the step with the surface 35 maintains a predetermined dimension.

As shown in FIGS. 6 and 7, the fins 27 protrude upward from the upper surface portion 30 of the body portion 26, the outer peripheral surface of the peripheral surface portion 31, and the upper surface of the flange portion 32. As shown in FIGS. The fins 27 include an outer protrusion 45 that protrudes upward from the central region of the upper surface portion 30, a first fin portion 46 that radially protrudes from the periphery of the outer protrusion 45 in a plurality of directions, for example, three directions, and a plurality of second fins 47 extending outward from between the adjacent first fins 46, 46 in parallel with each other. The outer projection 45 projects in the opposite direction to the direction in which the projection 39 projects, corresponding to the area of the contact portion 40 of the projection 39 . The outer protruding portion 45 is formed in a conical shape with a larger diameter on the lower end side and a smaller diameter on the upper end side, which is continuous with the upper surface portion 30 of the main body portion 26 .

Also, the decorative frame 18 is fixed to the lower portion of the radiator 17 . The decorative frame 18 includes a cylindrical tubular portion 50, a fixing portion 51 provided at the upper end of the tubular portion 50 and fixed to the flange portion 32 of the radiator 17 by screws, and a lower end of the tubular portion 50 protruding outward. , and a plurality of spring mounting portions 53 provided on the outer peripheral surface of the tubular portion 50 . Mounting springs 54 for mounting to the ceiling plate are attached to each spring mounting portion 53 .

The lamp body 11 has an embedded portion 11a in which the radiator 17 and the cylindrical portion 50 of the decorative frame 18 are embedded in the opening of the ceiling plate. The decorative frame portion 52 of the decorative frame 18 is installed in contact with the lower surface of the ceiling plate.

1 to 5, the light-emitting module 19 has a substrate 57 and a light-emitting portion 58 provided in a central region 57a on one surface of the substrate 57. As shown in FIG.

The substrate 57 is formed in a rectangular shape. The substrate 57 is based on, for example, a metal plate and has an insulating layer formed on its surface. A wiring pattern 59 is formed on one surface of the substrate 57 . The wiring pattern 59 has a mounting pattern portion 60 provided in the central region 57a of the substrate 57, and a pair of terminal portions 61 connected to both ends of the mounting pattern portion 60 and provided in the peripheral region 57b of the substrate 57. ing. The pair of terminal portions 61 are arranged in the peripheral region 57b of the substrate 57 at corners on one diagonal line of the substrate 57 facing each other.

The light-emitting portion 58 has a circular light-emitting surface 62 . In the light-emitting portion 58, for example, a plurality of LED chips 63, which are semiconductor light-emitting elements, are mounted on a mounting pattern 59 on one surface of a substrate 57, and the plurality of LED chips 63 are integrally sealed with a phosphor layer 64. As shown in FIG. In this case, the light emitting module 19 is a COB (Chip on board) module. The light emitted from the plurality of LED chips 63 excites the phosphor layer 64 and emits light. The excited light is emitted from the light emitting surface 62, and light having a predetermined color temperature is emitted from the light emitting surface 62. As shown in FIG. The light emitting unit 58 may be composed of other semiconductor light emitting elements such as organic EL.

The other surface of the substrate 57 of the light emitting module 19 is on the contact portion 40 of the projecting portion 39 of the radiator 17, and the second surface 35 of the contact portion 40 is provided with a heat conductive sheet or heat conductive grease. be placed in thermal contact with each other, or directly placed.

Here, the positional relationship and dimensional relationship between the substrate 57 of the light emitting module 19 and the radiator 17 on which the substrate 57 is arranged will be described.

The contact portion 40 of the protrusion 39 of the radiator 17 has a smaller outer shape than the substrate 57 . Therefore, a central area 57 a on the other surface of the substrate 57 corresponding to the area of the light emitting portion 58 on the one surface of the substrate 57 is arranged on the second surface 35 of the contact portion 40 . A peripheral area 57b on the other surface of the substrate 57 corresponding to at least the area of the terminal portion 61 on one surface of the substrate 57 is outside the second surface 35 (projection 39), and is a predetermined distance from the first surface 34. are arranged to face each other with an interval W1 of . The dimension by which the peripheral region 57b of the substrate 57 deviates outside of the protrusion 39 and the dimension of the interval W1 with the first surface 34 are determined by the terminal portion 61 provided in the peripheral region 57b of the substrate 57 and the protrusion of the radiator 17. The dimensions are such that an insulating distance can be secured between 39 and the first surface 34 .

In the present embodiment, since the contact portion 40 of the projecting portion 39 and the mounting portion 41 are continuous, the peripheral area 57b in the longitudinal direction of the board 57 is arranged in the mounting portion 41, but the terminal portion of the board 57 61 is located outside the peripheral area 57b of the substrate 57 located in the mounting portion 41 and is located at the corner of the substrate 57, so that it extends outside the second surface 35 (projection 39). It is detached and arranged so as to face the first surface 34 with a predetermined gap W1.

Also, the light emitting module 19 is fixed and electrically connected to the contact portion 40 (second surface 35) of the radiator 17 by a pair of sockets 66 so as to be in close contact therewith. The socket 66 includes a socket body 67 made of, for example, an insulating resin material, a contact (not shown) arranged in the socket body 67 and in contact with the terminal portion 61 of the substrate 57, and a socket body connected to the contact. It has a wire connection terminal (not shown) for connecting one end of the connection wire 13 inserted in 67 . The socket body 67 is provided with positioning projections that are inserted into the positioning holes 42 of the mounting portion 41 . Then, the socket body 67 is tightened and fixed by a screw 68 which is inserted through the socket body 67 and screwed into the mounting hole 43 of the mounting portion 41 . At this time, the socket body 67 contacts the substrate 57 and presses the substrate 57 against the second surface 35 (projection 39 ) of the radiator 17 , and the contact is connected to the terminal portion 61 of the substrate 57 .

Further, the mounting base 20 is made of, for example, an insulating resin material. The mounting base 20 has a mounting surface portion 72 mounted on the first surface 34 of the radiator 17 with a plurality of screws 71 and a peripheral wall portion 73 provided around the mounting surface portion 72 . The mounting surface portion 72 is formed with an insertion opening 74 through which the protrusion 39 of the radiator 17 is inserted. A positioning projection 75 for fitting and positioning the substrate 57 around the insertion opening 74 protrudes from one surface of the mounting surface portion 72 . The mounting surface portion 72 is positioned between the first surface 34 of the radiator 17 and the other surface of the peripheral area 57b of the substrate 57. As shown in FIG. The thickness W2 of the mounting surface portion 72 is smaller than the space W1 between the first surface 34 and the other surface of the peripheral area 57b of the substrate 57, and the socket 66 presses the substrate 57 against the second surface 35. It has no effect on what you do.

Further, as shown in FIG. 7, the reflecting plate 21 is formed in a cylindrical shape and is attached to the mounting base 20 at its upper end side. The reflector 21 reflects the light from the light emitting section 58 toward the lower end opening.

Also, the lens 22 is detachably attached to the lower end opening of the reflector 21, and controls the light from the light emitting section 58 to have a predetermined light distribution.

Further, the reflecting mirror 23 is formed in a cylindrical shape and is detachably attached inside the decorative frame 18 . Reflector 23 reflects the light that has passed through lens 22 in the irradiation direction.

Next, as shown in FIG. 8, the power supply unit 12 is electrically connected to the light emitting module 19 of the lamp body 11 by the connection line 13. As shown in FIG. The power supply unit 12 converts, for example, a commercial AC power supply into a predetermined lighting power supply and supplies it to the light emitting module 19 to light the light emitting module 19 .

A covered electric wire or the like is used for the connection wire 13 . One end of the connection wire 13 is electrically connected to the light-emitting module 19 inside the lamp body 11 , that is, connected to the socket 66 . The other end of the connection line 13 is pulled out of the lamp body 11 and connected to the power supply section 12 . As shown in FIG. 6 , the intermediate portion of the connection wire 13 is fixed to the wiring portion 28 of the radiator 17 by a connection wire fixing member 77 .

One end of the hanger 14 is fixed to the wiring portion 28 by a hanger fixing member 78 , and the other end of the hanger 14 is connected to the power supply portion 12 .

The length L1 of the hanger 14 between the lamp body 11 and the power supply section 12 is shorter than the length L2 of the connection line 13 between the lamp body 11 and the power supply section 12. As shown in FIG.

When installing the lighting device 10, first, the power supply line led to the opening of the ceiling board is pulled downward from the opening of the ceiling board and connected to the power supply unit 12, and this power supply unit 12 is connected to the ceiling board. It is inserted into the opening and installed on the upper surface of the ceiling board or the like, and then the lamp body 11 is inserted into the opening of the ceiling board and installed.

During such work, the lamp body 11 may be hung from the power supply part 12 or the power supply part 12 may be hung from the lamp body 11 . At this time, since the length L1 of the hanger 14 between the lamp body 11 and the power supply unit 12 is shorter than the length L2 of the connection line 13 between the lamp body 11 and the power supply unit 12, the lamp Even if the body 11 or the power supply unit 12 is suspended, it is suspended via the suspension tool 14, and no load is applied to the connection wire 13 and the connection points of the connection wire 13.

When the lamp body 11 is installed, the plurality of mounting springs 54 are elastically deformed upward so that they are aligned along the side surface of the radiator 17, and the lamp body 11 is inserted from above into the opening of the ceiling plate. By releasing the elastic deformation of the plurality of mounting springs 54 in the inserted state, the plurality of mounting springs 54 expand laterally due to their elasticity, contact the upper surface of the ceiling plate, and move the lighting body 11 upward with respect to the ceiling plate. , the decorative frame portion 52 contacts the lower surface of the ceiling plate, and the lamp body 11 is installed.

By supplying lighting power from the power supply unit 12 to the light emitting module 19 , the light emitting module 19 is lit and light is emitted from below the lamp body 11 . Heat generated when the light-emitting module 19 is lit is transferred to the radiator 17, and is efficiently radiated into the air from the plurality of fins 27 of the radiator 17. FIG.

In the illumination device 10 of the present embodiment configured as described above, the central region 57a on the other surface of the substrate 57 corresponding to the region of the light emitting portion 58 on the one surface of the substrate 57 is the second projection 39 of the radiator 17. A peripheral area 57b on the other surface of the substrate 57, which is arranged on the surface 35 and corresponds to at least the area of the terminal portion 61 on the one surface of the substrate 57, is outside the second surface 35 (projection 39). Since the terminal portion is arranged to face the surface 34 of the substrate 57 with a predetermined gap W1, the terminal portion is arranged in the peripheral area 57b of the substrate 57 while ensuring the heat dissipation of the light emitting portion 58 on the substrate 57. Insulation of 61 with respect to radiator 17 can be ensured.

Furthermore, since the outer projection 45 projects on the opposite side to the projection direction of the projection 39 corresponding to the area of the contact portion 40 of the projection 39, the contact area between the substrate 57 and the radiator 17 is increased. Even if it is less, the heat capacity for absorbing the heat of the light-emitting portion 58 can be increased by the outer protrusions 45, and the heat can be efficiently dissipated from the outer protrusions 45, so that the heat dissipation property of the radiator 17 can be ensured.

Next, FIG. 9 shows a lighting device 10 of a second embodiment.

This configuration is for a case where the diameter of the opening of the ceiling plate in which the lamp body 11 is embedded is larger than that of the first embodiment. The decoration frame 18 of the lamp body 11, the reflecting mirror 23, and the ceiling mounting structure including the mounting spring 54 are different from the first embodiment, and the rest of the structure is the same as the first embodiment.

The lamp body 11 includes a spring mounting plate 80 attached to the lower portion of the radiator 17, a reflector 81 attached to the spring mounting plate 80, and a plurality of mounting springs 82 called V-springs attached to the spring mounting plate 80. It has

The lamp body 11 is installed in the opening of the ceiling board by the installation unit 83 . The installation unit 83 includes an annular decorative frame portion 84 that abuts on the lower surface of the ceiling plate, an annular top plate portion 85 that is inserted into the opening of the ceiling plate, and a plurality of units that connect the decorative frame portion 84 and the top plate portion 85 together. legs 86. The top plate portion 85 is provided with hooking holes 87 for hooking the mounting springs 82 . A mounting bracket 88 is attached to each leg 86 so as to be vertically movable.

When the lighting device 10 is installed, the installation unit 83 is inserted into the opening of the ceiling plate from above, and each mounting bracket 88 is attached to the leg portion 86 while the decorative frame portion 84 is in contact with the lower surface of the ceiling plate. By moving downward along , each mounting bracket 88 protrudes sideways and descends to elastically contact the upper surface of the ceiling plate and is locked at that position. Therefore, the installation unit 83 is installed with the ceiling plate sandwiched between the decorative frame portion 84 and each mounting bracket 88 .

The power supply line led to the opening of the ceiling board is drawn downward from the inside of the installation unit 83 and connected to the power supply section 12, and this power supply section 12 is inserted from the inside of the installation unit 83 and attached to the top surface of the ceiling board. Install.

Note that the installation unit 83 may be installed in the opening of the ceiling board after the power supply unit 12 to which the power line is connected is first installed on the upper surface of the ceiling board or the like.

After the installation unit 83 is installed, each mounting spring 82 of the lamp body 11 is hooked to each hooking hole 87 of the spring mounting plate 80 of the installation unit 83, and the lamp body 11 is pushed up inside the installation unit 83. The elasticity of the lamp body 11 is pulled up with respect to the installation unit 83, and the reflecting mirror 81 comes into contact with the decorative frame portion 84 and stops, thus completing the installation.

And also in 2nd Embodiment, the effect similar to 1st Embodiment mentioned above can be obtained.

While several embodiments of the invention have been described, these embodiments have been 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 modifications 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 scope of the invention described in the claims and equivalents thereof.

10 lighting equipment
17 Radiator
19 light emitting module
34 First surface
35 Second surface
39 Projection
40 contacts
41 Mounting part
45 Outer Protrusion
57 Substrate
57a central region
57b Peripheral area
58 Light-emitting part
61 Terminal

Claims (2)

a first surface; a projection projecting from the first surface and including a contact portion and a pair of mounting portions projecting from both ends of the contact portion; and a radiator having a pair of mounting portions that are smaller than the width of both ends of the contact portion;
a substrate, a light-emitting portion provided in a central region of one surface of the substrate, and a terminal portion provided in a peripheral region of one surface of the substrate and connected to the light-emitting portion, and the center of the other surface of the substrate A region is arranged on the second surface of the contact portion of the heat radiator, the other surface of the substrate is brought into contact with the contact portion by a socket attached to the mounting portion, and the terminal portion of the substrate is provided. a light-emitting module arranged so that the peripheral area of the radiator is outside the second surface of the radiator and faces the first surface;
A lighting device comprising: 2. The lighting device according to claim 1, wherein the radiator has an outer protrusion projecting in a direction opposite to the projecting direction of the protrusion.

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