JP6484926B2 - Light source unit and light source device - Google Patents

Description

  The present invention relates to a light source unit and a light source device in which a light emitting element such as an LED and a reflecting mirror are combined.

  In recent years, a light source unit in which a light source such as an LED and a reflector of the LED are combined is known. As this type of light source unit, for example, a light source unit in which a support provided with an LED for irradiating light on the reflection surface is attached to the front surface of the reflection surface having a reflection surface (see, for example, Patent Document 1). .

Japanese Patent No. 4457920

In the conventional configuration described above, by providing a support made of a heat conductive material on the front side of the reflector, heat is radiated from the support to the front side of the light source unit to improve heat dissipation. It is desired to improve the performance.
This invention is made | formed in view of the situation mentioned above, and aims at providing the light source unit and light source device which can improve heat dissipation.

To achieve the above object, a light source device of the present invention comprises a reflector having a reflecting surface, is provided in front of the reflector, and a support disposed opposite the light emitting element to the reflective surface, A light source unit comprising: a support made of a heat conductive material; and a conductor formed on the support made of a material having conductivity and heat conductivity to electrically and thermally connect the light emitting element. multiple wherein the reflector through the conductor extending from the support, has a hole or groove extending on the back from the front of the reflector, provided on a back surface of the reflector, heat dissipation to the front pad, the rear surface A plurality of light source units are disposed on the substrate, and the support, the reflector, and the substrate are electrically connected to the screw having high thermal conductivity from the rear side of the substrate. By screwing it into the body It was characterized by.

In the light source device of the present invention, the reflector is formed of an insulating material .

Further, the light source device of the present invention is provided with a plurality of reflectors having a reflective surface, and one large type provided on the front surface of the plurality of reflectors, and a light emitting element disposed opposite to each reflective surface of the plurality of reflectors comprising a support and, in conjunction with forming the large support a thermally conductive material, the large support, formed of a material having electrical and thermal conductivity, electrical and heat from the light emitting element a light source unit comprising a conductor for performing connection, said plurality of reflectors, passing the conductor extending from the large support, has a hole or groove extending on the back from the front of the reflector, A substrate provided on a back surface of the plurality of reflectors, having a heat dissipating pad on a front surface and a wiring circuit on a rear surface ; and the one large support body, the plurality of reflectors, and the substrate are disposed behind the substrate. Screwing a screw having high thermal conductivity into the conductor from the side A more fixed, characterized in that.

The light source device of the present invention is provided with a block-shaped reflector having a plurality of recesses, each of which has a reflecting surface, and provided in front of the block-shaped reflector, and each reflection of the block-shaped reflector. and a single large support facing light-emitting elements are arranged in the surface, thereby forming the large support a thermally conductive material, a material having a large in size support, electrical and thermal conductivity A light source unit comprising a conductor for electrically and thermally connecting the light emitting element, wherein the block reflector passes through the conductor extending from the large support, and the block reflector. A hole or groove extending from the front side of the body to the back side, provided on the back side of the block-type reflector , comprising a substrate having a heat dissipation pad on the front side and a wiring circuit on the rear side, the one large support and the A block-shaped reflector and the substrate; A screw having a high thermal conductivity from the rear side of the plate were fixed by screwing to the conductor, characterized in that.

In the light source device of the present invention, the light source unit and the substrate may be arranged in a housing, a bent portion may be formed on the large support, and the bent portion may be in close contact with the wall surface of the housing.

  According to the present invention, the support is provided with a conductor formed of a material having electrical conductivity and thermal conductivity and electrically and thermally connected to the light emitting element, and the reflector extends from the support. Because it has a hole or groove extending from the front surface of the reflector to the back surface through the conductor, heat can be radiated from the support to the back surface of the reflector through the conductor, and heat can be radiated from the front surface and the back surface of the light source unit. The heat dissipation of the light source unit can be improved.

It is a perspective view which shows the light source device of 1st Embodiment of this invention from the front side. It is a perspective view which shows a light source device from the back side. It is a figure which shows a light source device, (A) is a front view, (B) is a bottom view, (C) is a side view, (D) is a back view. It is a disassembled perspective view which shows a light source unit. It is a longitudinal cross-sectional view which shows a light source device. It is a figure which shows the board | substrate for circuits, (A) is a reverse view of a support body, (B) is sectional drawing on the aa of (A). It is a figure which shows the support body which concerns on 2nd Embodiment of this invention, (A) is a front view, (B) is a bottom view, (C) is a side view. It is a figure which shows the support body which concerns on 3rd Embodiment of this invention, (A) is a front view, (B) is a bottom view, (C) is a side view. It is a figure which shows the support body which concerns on 4th Embodiment of this invention, (A) is a front view, (B) is a bottom view, (C) is a side view. It is a figure which shows the support body which concerns on 5th Embodiment of this invention, (A) is a front view, (B) is a bottom view, (C) is a side view. It is a front view which shows the light source unit which concerns on 6th Embodiment of this invention. It is a figure which shows the support body which concerns on 6th Embodiment of this invention, (A) is a front view, (B) is a bottom view, (C) is a side view. It is a figure which shows the light source device which concerns on 7th Embodiment of this invention, (A) is a front view, (B) is a bottom view, (C) is a side view, (D) is a back view. It is a disassembled perspective view which shows the light source unit which concerns on 8th Embodiment of this invention. It is a disassembled perspective view which shows the light source unit which concerns on 9th Embodiment of this invention. It is a perspective view of the light source device which concerns on 10th Embodiment of this invention. It is a perspective view of the support body which concerns on the 10th Embodiment of this invention. It is a perspective view of the light source device which concerns on the 11th Embodiment of this invention. It is a perspective view of the reflector which concerns on the 11th Embodiment of this invention. It is a perspective view of the light source device which concerns on the 12th Embodiment of this invention. It is a front view of the light source device which concerns on the 13th Embodiment of this invention. It is a side view of the light source device which concerns on the 13th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
1 is a perspective view showing the light source device of the first embodiment from the front side, FIG. 2 is a perspective view showing the light source device from the back side, and FIG. 3 is a view showing the light source device 1. Is a front view, (B) is a bottom view, (C) is a side view, and (D) is a back view. FIG. 4 is an exploded perspective view showing the light source unit. FIG. 5 is a longitudinal sectional view showing the light source device. 6A and 6B are diagrams showing a circuit board, in which FIG. 6A is a rear view of the support, and FIG. In the following description, front and rear and front and back correspond to the radiation direction of the light source unit, and in this embodiment, the radiation direction is described as the front or the front.

  As shown in FIGS. 1 to 3, the light source device 1 is configured by arranging a plurality of (in this embodiment, 12) light source units 10 on a substrate 2. The substrate 2 is provided with a heat dissipation pad 3 on the front side and a wiring circuit 4 of each light source unit 10 electrically and thermally connected to the heat dissipation pad 3 on the back side. Specifically, the substrate 2 is formed by providing copper foil on both surfaces of a plate made of an insulating material such as a resin, and the copper foil on the front side dissipates heat by removing only the necessary portions of the copper foil on both sides of the circuit. The pad 3 and the copper foil on the back surface constitute the wiring circuit 4. Four heat radiating pads 3 are provided for each light source unit 10, and are electrically and thermally connected to the wiring circuit 4 on the back surface side through the conduction holes 25. That is, the substrate 2 includes a heat dissipation pad 3 and a wiring circuit 4 having heat dissipation properties, and constitutes a heat dissipation portion of the light source device 1. A connector 5 for connecting to a control board such as a power supply board is provided on the back surface of the board 2.

  As shown in FIGS. 4 and 5, the light source unit 10 includes, as a light source, a high-output LED 11 that is configured by housing a large number of LED elements, which are examples of light-emitting elements, in one package or lamp. The light source unit 10 includes the LED 11 and a reflector 12 disposed to face the light emitting surface 11A of the LED 11, and the LED 11 and the reflector 12 are configured as a set. The light source unit 10 may be configured to use a light emitting element such as an organic EL as a light source in addition to the LED element.

The light source unit 10 includes a support 13 that supports the LED 11 and a reflector 12 that has a reflective surface 14.
As shown in FIG. 4, the support 13 includes an annular (annular in this embodiment) support frame 13A, a substantially disc-shaped mounting portion 13B disposed at the center O of the support frame 13A, and a support. Two arm portions 13C extending from the frame 13A toward the mounting portion 13B, and four support fixing portions 13D extending in the radial direction outside the support frame 13A, and these are high heat such as an aluminum alloy A plate material made of a conductive metal material is integrally formed, for example, by die cutting. In the present embodiment, the support body 13 is formed in a substantially circular inner shape, and the outer shape of the support body 13 is formed in a substantially square shape, so that four support body fixing portions 13D are formed at the corners. Further, the two arm portions 13C are provided on the opposing support fixing portions 13D, respectively, and are arranged on the same straight line.

As shown in FIG. 5, the support frame 13 </ b> A of the support 13 has a height H in the radial direction that is a predetermined height that can prevent external light (external light) from entering the reflector 12. .
On the back surface of the support 13, the LED 11 is fixed to the attachment portion 13 </ b> B. Further, as shown in FIG. 6, a circuit board 15 is provided on the back surface of the support 13, and electric power from the outside is supplied to the LEDs 11 through the circuit board 15. The circuit board 15 includes an anode electrode (anode) 15A disposed on one arm portion 13C, a cathode electrode (cathode) 15B disposed on the other arm portion 13C, and a ground 15C disposed on the mounting portion 13B. It is equipped with. An insulating layer 16 is provided between the arm portion 13 </ b> C and the circuit board 15.

Conductors 17 extending on the back surface of the reflector 12 are respectively provided on the back surfaces of the pair of support body fixing portions 13D that face each other on the support body 13. The conductors 17 and 17 are formed of a metal material having high thermal conductivity such as aluminum alloy, copper, brass, etc., and are provided on a main body portion 17A formed in a substantially columnar shape and an end surface of the main body portion 17A, and fixed to a support body. And a flange portion 17B fixed to the back surface of the portion 13D, and is formed in a rod-like body. One conductor 17 is connected to the anode electrode 15A, and the other conductor 17 is connected to the cathode electrode 15B. These conductors 17 and 17 supply power to the LED 11 via the circuit board 15. The wiring is configured.
As shown in FIG. 5, the support 13 is fixed with the support frame 13 </ b> A in surface contact with the upper surface 12 </ b> A of the reflector 12 with the light emitting surface 11 </ b> A of the LED 11 facing the back side.

As shown in FIG. 4, the reflector 12 is formed in a shape (substantially square) that is substantially the same as the outer shape of the support 13 in plan view, and includes a reflecting surface 14 at the center O and reflects outside the reflecting surface 14. A body fixing portion 12B is provided. The reflector fixing portion 12B is formed in a position and a size that correspond to the support fixing portion 13D. When fixing the support frame 13A to the upper surface 12A of the reflector 12, the reflector fixing portion 12B and the support fixing portion 13D are arranged at corresponding positions and are fixed to each other.
As shown in FIG. 5, the reflecting surface 14 is disposed to face the front surface of the light emitting surface 11 </ b> A of the LED 11. The reflection surface 14 has a reflection characteristic that totally reflects the emitted light of the LED 11 disposed opposite to the reflection surface 14, and is formed in a paraboloid (rotational paraboloid) or an aspherical concave shape with the arrangement position of the LED 11 as a focal point. Has been. Therefore, the light emitted from the LED 11 is reflected as light L substantially parallel to the central axis (optical axis) N of the reflector 12 and is emitted forward from the opening 18 between the arm portions 13C of the support 13. The

In the present embodiment, the reflecting surface 14, instead of placing a single reflecting surface portion 14A relative to the LED 11, each of which focus the center of the light-emitting surface 11A of the LED 11, becomes sequentially smaller the curvature away from the LED 11 A plurality of reflecting surface portions 14A, 14A,. The reflecting surface 14 is configured by connecting the upper end (outer end) Qa and the lower end (inner end) Qb of each reflecting surface portion 14A by a connecting surface 14B. At this time, the length from the upper end Qa to the lower end Qb of each reflective surface portion 14A (the width of the reflective surface) is defined so that the reflected light of the reflective surface portion 14A does not enter the connection surface 14B. Yes.
According to the reflecting surface 14 having this configuration, even when the light emitting surface 11A has a size, the light flux can be contained within a predetermined range. In addition, although the reflective surface 14 is constituted by a plurality of reflective surface portions 14A, the height (thickness) of the reflector 12 is increased as compared with the case where the reflective surface 14 is constituted by a single reflective surface portion 14A. The width of the body 12 can be reduced. Therefore, in the light source device 1 in which the plurality of light source units 10 are arranged side by side, the width of the light source device 1 can be reduced.
For details of the configuration in which the reflecting surface 14 includes a plurality of reflecting surface portions 14A, the technique described in Japanese Patent Application No. 2013-120682, which is the prior application of the applicant, can be used.

The reflector 12 can be formed by resin molding using an insulating material, for example, a resin material, and the reflective surface 14 is formed by applying a reflective material to the reflector 12. According to this configuration, the light source unit 10 can be reduced in weight by forming the reflector 12 using a resin or the like, and heat transfer from the support 13 to the reflector 12 can be suppressed. And thermal effects can be suppressed.
In addition, the reflector 12 includes a through hole (hole) 21 through which the conductors 17 and 17 are passed through the reflector fixing portion 12B corresponding to the conductors 17 and 17. The through hole 21 is formed over the top and bottom of the reflector 12, the conductor 17 is formed at a height (thickness) T or more of the reflector 12, and the lower end (tip) of the conductor 17 is interposed through the through hole 21. It protrudes to the rear side of the light source unit 10. According to this configuration, since the conductor 17 can be wired from the back side of the support 13 to the rear side of the light source unit 10 through the through hole 21 without taking out in the radiation direction of the light source unit 10, the light source unit by wiring The influence on the 10 radiated light can be prevented.

As shown in FIG. 4, the light source unit 10 arranges the support 13 on the front surface of the reflector 12 and fastens it with screws S <b> 1 from the front side, and also attaches the reflector 12 to which the support 13 is fixed to the substrate 2. It arrange | positions at the front and is screwed and fixed with the screw S2 from the rear side. The screws S1 and S2 are formed from a metal material having high thermal conductivity such as an aluminum alloy.
An insertion hole 22 into which the screw S1 is inserted is formed in the other pair of support body fixing portions 13D facing each other. In addition, the support 13 includes a counterbore 23 in a position corresponding to the insertion hole 22 in which the head of the screw S1 inserted into the insertion hole 22 is embedded.
In the reflector fixing portion 12 </ b> B of the reflector 12, a screw hole 24 in which a thread is cut is formed at a position corresponding to the insertion hole 22.
At the lower end of the conductor 17, a screw hole 26 with a thread cut therein is formed.
A conductive hole 25 is formed in the substrate 2 at a position corresponding to the screw hole 26.
The support 13 and the reflector 12 are integrally fixed by screwing a screw S1 inserted into the insertion hole 22 of the support 13 from the front side into the screw hole 24 of the reflector 12. The substrate 2 and the reflector 12 in which the support 13 is integrated are fixed integrally by screwing a screw S2 inserted into the conduction hole 25 of the substrate 2 from the rear side into the screw hole 26 of the conductor 17. The At this time, each conductor 17 is in surface contact with the heat dissipation pad 3 at the lower end (tip). Further, the heat dissipating pad 3 and the wiring circuit 4 are electrically and thermally connected to each other via the screw S2. The reflector 12 may be sandwiched between the substrate 2 and the support 13, and the substrate 2, the reflector 12 and the support 13 may be fastened together with a common screw from the front or rear side.

  According to these structures, since the support body 13 was formed from the metal material which has high thermal conductivity, it can be radiated from the front surface of the support body 13. Further, since the conductor 17 formed of a metal material having high thermal conductivity is provided on the back side of the support 13 and this conductor 17 is brought into contact with the heat dissipation pad 3 of the substrate 2, The heat of the LED 11 can be transferred to the heat dissipating pad 3. In addition, since the screw S2 formed from a metal material having high thermal conductivity is screwed to the conductor 17 and brought into contact with the heat dissipation pad 3 of the substrate 2, the screw 2 from the back surface of the support 13 is also used by the screw S2. The heat of the LED 11 can be transferred to the heat dissipation pad 3. Thereby, since the heat generation of the LED 11 can be radiated from both the front surface and the rear surface of the support 13, even when the output of the LED 11 is large, the heat of the LED 11 can be radiated efficiently. Since the heat dissipating pad 3 is thermally connected to the wiring circuit 4 on the back surface of the substrate 2, the heat of the heat dissipating pad 3 is dissipated from the wiring circuit 4.

In the said embodiment, although the support body 13 has been arrange | positioned in the front surface of the reflector 12 and it screwed and fixed with the screw S1 from the front side, it is not limited to this.
For example, the conductors 17 and 17 are fixed to the support 13 by brazing, soldering, press-fitting, caulking, etc., and the conductors 17 and 17 are inserted into the through holes 21 of the reflector 12, and from the rear side of the substrate 2. You may fix with screws S2. In this configuration, the plurality of screws S1 are not required, and the number of parts and the number of assembly steps can be reduced.

  As described above, according to the embodiment to which the present invention is applied, the reflector 12 having the reflective surface 14, the support 13 provided on the front surface of the reflector 12, and the LED 11 facing the reflective surface 14, The support body 13 is provided with a conductor 17 formed of a material having conductivity and thermal conductivity and electrically and thermally connected to the LED 11, and the reflector 12 has a conductor 17 extending from the support body 13. The through-hole 21 extending from the front surface to the back surface of the reflector 12 is provided. With this configuration, heat can be radiated from the support 13 to the back surface of the reflector 12 via the conductor 17, and heat can be radiated from the front and back surfaces of the light source unit 10, so that the heat dissipation of the light source unit 10 can be improved. . Moreover, since the conductor 17 which comprises the wiring of LED11 can be taken out to the back surface side of the reflector 12 through the through-hole 21, compared with the structure which pulls out the lead wire which comprises the wiring of LED11 from the side surface of a reflector, for example The wiring configuration is facilitated and the light source unit 10 can be downsized. Moreover, since the several light source unit 10 can be arrange | positioned closely, the light source device 1 can be reduced in size. Further, according to the present embodiment, since each light source unit 10 is arranged independently, even if performance degradation due to long-term use of the light source device 1 occurs in one or a plurality of light source units 10. Only the light source unit 10 whose performance has deteriorated can be replaced, and as a result, the durability of the light source device 1 can be improved.

  Further, according to the embodiment to which the present invention is applied, since the heat dissipation pad 3 is connected to the conductor 17 on the back surface side of the reflector 12, the heat of the LED 11 is transferred from the back surface of the support 13 to the heat dissipation pad 3 of the substrate 2. Heat can be transferred. Therefore, since the heat generation of the LED 11 can be efficiently radiated from both the front surface and the rear surface of the support 13, even when the output of the LED 11 is large, the heat of the LED 11 can be efficiently radiated.

  Further, according to the embodiment to which the present invention is applied, the reflector 12 is formed of an insulating material, so that the light source unit 10 can be reduced in weight, and heat transfer from the support 13 to the reflector 12 is suppressed. It is possible to suppress thermal effects.

Second Embodiment
In the first embodiment described above, the two conductors 17 are provided. However, in the second embodiment described below, for example, it is suitable when higher heat dissipation is required with higher output of the LED 11 or the like. Embodiments that can be used for the above will be described. Note that in the second embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

  In the second embodiment, as shown in FIG. 7, in the light source unit 110, the conductors 17 are provided on the back surfaces of the four support fixing portions 13 </ b> D of the support 13, and a total of four conductors 17 to 17 are provided. Is provided. According to this configuration, the heat of the LED 11 can be transferred from the four conductors 17 to the heat radiating pad 3, so that the heat of the LED 11 can be radiated more efficiently. The number and position of the conductors 17 are not limited and can be changed as appropriate.

<Third Embodiment>
In the first embodiment and the second embodiment described above, the arm portion 13C of the support 13 is provided in the opposite support fixing portion 13D, and the two arm portions 13C are arranged on the same straight line. In the third embodiment, as shown in FIG. 8, the light source unit 210 includes arm portions 13C in two adjacent support fixing portions 13D, and one arm portion 13C is provided with respect to the other arm portions 13C. Are arranged at a predetermined angle. Note that in the third embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

<Fourth embodiment>
In the first embodiment and the second embodiment described above, two arm portions 13C of the support 13 are provided. In the fourth embodiment, as shown in FIG. Three arm portions 13C are provided. The three arm portions 13C are provided radially at equal intervals. Note that in the fourth embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

<Fifth Embodiment>
In the first embodiment and the second embodiment described above, two arm parts 13C of the support 13 are provided. In the fifth embodiment, as shown in FIG. Four arm portions 13C are provided. Note that in the fifth embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.
Thus, the number and positions of the arm portions 13C of the support 13 are not limited and can be changed as appropriate.

<Sixth Embodiment>
In the above first to fifth embodiments, the outer shape of the support 13 is formed in a substantially square shape, so that four support fixing portions 13D are provided at the corners. However, in the sixth embodiment, FIG. 11 and FIG. 12, a substantially semicircular support fixing portion 513D is provided outside the support frame 13A. Specifically, the support body 513 of the light source unit 510 includes a support frame 13A, a mounting portion 13B, four arm portions 13C, and 4 extending in a substantially semicircular shape in the radial direction outside the support frame 13A. Two support fixing portions 513D, which are integrally formed by, for example, die-cutting a plate material made of a metal material having high thermal conductivity such as an aluminum alloy. The reflector 512 is formed in substantially the same shape as the outer shape of the support 513 in plan view. Note that in the sixth embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

<Seventh embodiment>
In the first embodiment described above, heat is dissipated from the wiring circuit 4 on the back surface of the substrate 2. However, in the seventh embodiment described below, for example, higher heat dissipation is required as the output of the LED 11 increases. An embodiment that can be suitably used in the case of the above will be described. Note that in the seventh embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.
In the seventh embodiment, the light source device 601 includes a heat sink 30 on the back surface of the substrate 2 as shown in FIG. The heat sink 30 is formed of a metal material having high thermal conductivity such as an aluminum alloy, and is configured by providing a plurality of radiating fins 32 on a radiating plate 31. The heat radiating fins 32 are formed integrally with the heat radiating plate 31 over the vertical direction of the heat radiating plate 31 (the short direction in the present embodiment), and extend substantially parallel to each other. The heat sink 30 is fixed to the back surface of the substrate 2 via the heat transfer sheet 40. According to this configuration, the heat of the wiring circuit 4 can be efficiently transferred to the heat sink 30 and radiated through the heat radiation fins 32. The thickness of the heat radiating plate 31 and the thickness and height (length in the front-rear direction) of the heat radiating fins 32 can be arbitrarily formed based on the use of the light source device 601 and the required heat capacity.
Instead of or in addition to the heat sink 30 and the heat transfer sheet 40, the light source device 601 may be configured to include a blower path on the back surface of the substrate 2 by providing a blower (not shown).

<Eighth Embodiment>
In the first embodiment described above, the plurality of light source units 10 are provided on the substrate 2. However, in the eighth embodiment, as shown in FIG. 14, the light source device 701 includes one light source unit 10 on the substrate 702. It has. The substrate 702 is formed of a plate material made of a metal material having high thermal conductivity such as an aluminum alloy, and constitutes a heat radiating portion. The substrate 702 includes an insertion hole 725 into which the screw S2 is inserted at a position corresponding to the insertion hole 26. Note that in the eighth embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

<Ninth Embodiment>
In the first embodiment, the through hole 21 through which the conductor 17 is passed is formed in the reflector 12. However, in the ninth embodiment, as shown in FIG. 15, the reflector 812 of the light source device 801 is And a groove 821 through which the conductor 17 passes. The groove 821 is formed over the reflector 812 and is open to the side. Also with this configuration, the conductor 17 can be wired from the back side of the support 13 to the rear side of the light source unit 10 through the through-hole 21 without taking out in the radiation direction of the light source unit 10. Can be prevented from affecting the emitted light. Further, since the conductor 17 is arranged in the groove 821 that opens to the side, the heat transferred to the conductor 17 is also radiated from the side of the conductor 17, so that the heat dissipation of the light source unit 10 is further improved. be able to. Note that in the ninth embodiment, identical symbols are assigned to configurations similar to those in the first embodiment and descriptions thereof are omitted.

The first to ninth embodiments described above show only one aspect of the present invention, and it is needless to say that modifications and applications can be arbitrarily made within the scope of the present invention.
In the above embodiment, there is a slight gap between the supports 13 and 513 of the light source unit 10. For example, an adhesive or a caulking material having excellent thermal conductivity is provided in the gap between the supports 13 and 513. It may be filled and thermally coupled, or a bar made of a heat conductive material may be bridged between the supports 13 and 513. In this configuration, since there is no gap between the supports 13 and 513 and the supports 13 and 513 are thermally coupled, heat is diffused, the temperature between the supports 13 and 513 is equalized, and as a result The lifetime of the LEDs provided on the bodies 13 and 513 is made substantially uniform, and the lifetime of the light source device 10 is improved.

Moreover, in the above-mentioned embodiment, although the reflector 12 was formed using insulating materials, such as a resin material, it is not limited to this, You may form the reflector 12 with a metal material, for example.
In the above-described embodiment, the reflector 12 and the support 13 are fixed to the substrate 2 with screws S1 and S2. However, the method for fixing the reflector 12 and the support 13 is not limited to this, and for example, an adhesive or the like. Other fixtures may be used.

<Tenth Embodiment>
16 and 17 show a tenth embodiment.
The light source device 100 according to this embodiment is different from the light source device 1 according to the first embodiment shown in FIG. In FIG. 16, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.
In this embodiment, as in the first embodiment, a total of twelve reflectors 12, 12,... In three rows and four rows are arranged on the substrate 2. In the first embodiment, the support 13 is disposed on each of the reflectors 12, 12,..., But in this embodiment, a single sheet having a size that covers all the 12 reflectors 12, 12,. A large support 130 is attached to the reflectors 12, 12... By a plurality of screws S1.

The large support 130 is formed with support portions 120, 120,... Facing the reflectors 12, 12,..., Respectively, so that the support portions 120, 120 and the reflectors 12, 12,. Composed. As in the first embodiment, the LEDs 11 are arranged on the support portions 120, 120. A pair of concave portions 121, 121,... Are formed on the support portions 120, 120, and convex portions (not shown) that fit into the concave portions 121, 121,. The convex portions are fitted into the pair of concave portions 121, 121..., The large support 130 is positioned, and the relative positions of the LEDs 11 and the reflectors 12 are secured. As shown in FIG. 17, the support portions 120, 120... Are provided with conductors 17, 17 arranged diagonally on the back sides 120 b, 120 b... As in the first embodiment shown in FIG. . As in the first embodiment shown in FIG. 4, the conductors 17, 17 pass through the through holes 21 formed in the reflector 12 and are screwed to the reflector 12 together with the substrate 2 by screws S <b> 2. .
The large support 130 is integrally formed by, for example, die-molding a plate made of a metal material having a high thermal conductivity such as an aluminum alloy in the support portions 120, 120... And the recesses 121, 121. ing.

Next, temperature measurement results will be described.
In the first embodiment described above, when the light source device 1 is used, the temperature of the supports 13, 13... A to D is the highest at about 51.degree. C. to 56.degree. The temperature of the H supports 13, 13... Is as high as about 49 ° C. to 52 ° C., the temperature of the I through J supports 13, 13 is as high as about 47 ° C. to 52 ° C. , 13 was approximately 45 ° C to 48 ° C. In addition, the board | substrate 2 part was about 38 to 44 degreeC.
The occurrence of this phenomenon is because the supports 13, 13,... Are individually attached to the reflectors 12, 12,.
On the other hand, in the tenth embodiment, one large support body 130 having a size covering all of the twelve reflectors 12, 12... Is attached to the reflectors 12, 12. Therefore, heat diffused throughout the large support 130, and a substantially uniform temperature distribution was observed. That is, it was about 47 degreeC-52 degreeC as the large sized support body 130 whole. In addition, the board | substrate 2 part was about 38 to 44 degreeC similarly to 1st Embodiment.
As described above, according to the tenth embodiment, the temperature of the large support 130 can be kept substantially uniform. As a result, the lifetime of the LEDs provided on the large support 130 can be made substantially uniform, and the lifetime of the light source device 100 can be improved.

As mentioned above, although this invention was demonstrated based on 10th Embodiment, since it illustrates only the one aspect | mode of this invention to the last, arbitrarily change and application are possible in the range which does not deviate from the meaning of this invention. is there.
For example, in the present embodiment, the large support 130 is configured to cover a total of twelve reflectors 12, 12... Arranged in three rows and four rows arranged on the substrate 2. The structure which covers the reflectors 12, 12 ... arranged in a line may be sufficient, and the structure which covers the reflectors 12, 12 ... arranged in a line horizontally may be sufficient.

<Eleventh embodiment>
18 and 19 show an eleventh embodiment.
The light source device 100 according to the eleventh embodiment has a different configuration in the reflectors 12, 12... And the support 13 as compared with the first embodiment. In FIG. 18, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. In particular, in the eleventh embodiment, a total of 12 reflectors are formed by one block-shaped reflector 140. As shown in FIG. 19, this block-shaped reflector 140 has a total of 12 recesses in 3 rows and 4 rows, and reflective surfaces 151, 151... Are formed in the respective recesses. . That is, the block-shaped reflector 140 includes a plurality of reflector portions (corresponding to recesses) 150, 150..., And reflective surfaces 151, 151. Yes.

As shown in FIG. 19, the block-shaped reflector is formed with a total of twelve reflector portions 150, 150... In three rows and four rows. In each reflector 150, 150..., Reflection surfaces 151, 151..., Screw holes 152, 152... Through which the screw S1 shown in FIG. Holes 153, 153... Are provided. As shown in FIG. 18, a single large support body 130 is disposed on the surface of the block-shaped reflector 140.
A pair of recesses 121, 121... Is formed in the support portions 120, 120... Of the large support 130, and a protrusion 122 that fits into the recesses 121, 121. The large support 130 is positioned by fitting the convex portion 122 into the pair of concave portions 121, 121..., And the relative positions of the LEDs 11 and the reflector portions 150, 150.
In addition, the large support 130 is brought into contact with conductors 17 and 17 formed in the same manner as in the configuration of FIG. 17, and the conductors 17 and 17 are through holes 153 and 153 formed in the block reflector 140. .., And screwed to the block-shaped reflector 140 together with the substrate 2.

  Also in the eleventh embodiment, as in the tenth embodiment, the temperature of the large support 130 can be kept substantially uniform. As a result, the lifetime of the LEDs provided on the large support 130 can be made substantially uniform, and the lifetime of the light source device 100 can be improved.

As mentioned above, although this invention was demonstrated based on 11th Embodiment, since it illustrates only the one aspect | mode of this invention to the last, arbitrarily change and application are possible in the range which does not deviate from the meaning of this invention. is there.
For example, in the present embodiment, the block-shaped reflector 140 is configured as one block, but the number may be plural, such as using two or three block-type reflectors.
Further, for example, in the present embodiment, the large support body 130 is configured to cover the block-type reflector 140 including a total of twelve reflector portions 150, 150... In three rows and four rows. However, it may be configured to cover the block-shaped reflectors including the reflector portions 150, 150... Vertically arranged in a row, or to cover the block-shaped reflectors including the reflector portions 150, 150. It may be a configuration.

<Twelfth embodiment>
FIG. 20 shows a twelfth embodiment. In FIG. 20, the same parts as those in FIGS. 16 and 17 are denoted by the same reference numerals, and the description thereof is omitted.
In the light source device 100 of the twelfth embodiment, the conductors 17 and 17 (see FIG. 17) are brazed, soldered, press-fitted, and caulked to the support portions 120, 120,. As in the first embodiment shown in FIG. 4, the conductors 17 and 17 are inserted into the through holes 21 of the reflector 12 and fixed with screws S <b> 2 from the rear side of the substrate 2. .
Therefore, in the twelfth embodiment, the plurality of screws S1 can be omitted and the number of parts can be reduced as compared with the configuration of FIG.

<13th Embodiment>
21 and 22 show a thirteenth embodiment. 21 and 22, the same parts as those in FIG. 18 are denoted by the same reference numerals, and the description thereof is omitted. 21, unlike FIG. 18, the conductors 17, 17 (see FIG. 17) are fixed to the support portions 120, 120... Of the large support 230 by brazing, soldering, press fitting, caulking, or the like. Similarly to the first embodiment shown in FIG. 4, the conductors 17 and 17 are inserted into the through holes 21 of the reflector 12 and fixed by screws S2 from the rear side of the substrate 2.
Therefore, in the thirteenth embodiment, the plurality of screws S1 can be omitted and the number of parts can be reduced as compared with the configuration of FIG.
In the thirteenth embodiment, as shown in FIG. 22, a single large support body 230 that constitutes the light source device 100 is formed to be bent in a U-shaped cross section, and the pair of bent portions 231 each serve as a heat transfer portion. It is composed. The light source device 100 includes a box-shaped housing 232 with an open top and the large support body 230 corresponding to the lid, and a pair of heat transfer portions 231 are formed on the inner wall (wall surface) of the box-shaped housing 232. It is in close contact and fixed with screws S3. In the thirteenth embodiment, the heat of the LED 11 is transferred to the inner wall of the box-shaped housing 232 through the bent portion 231 of the large support 230, so that the heat dissipation effect is enhanced.

Note that each of the above-described embodiments is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
For example, in the above-described embodiment, the conductor 17 is formed in a rod-like body. However, the shape of the conductor 17 is not particularly limited as long as it is a configuration that can electrically and thermally connect the LED 11. Instead, for example, a plate shape may be used.

  The light source unit and the light source device of the present invention can be applied to an arbitrary lighting device such as a security camera, an image processing system such as an N system, an area lighting device, and a stage lighting device. For example, when applied to a stage lighting apparatus, a plurality of light source units having LEDs of different emission colors may be arranged on a substrate.

1, 100, 601, 701, 801 Light source device 2, 702 Substrate (heat dissipation part)
3 Heat radiation pad 4 Wiring circuit 10, 110, 210, 310, 410.510 Light source unit 11 LED (light emitting element)
12,812 Reflector 13,513 Support body 130 Large support body 14 Reflecting surface 17 Conductor (wiring)
21 Through hole (hole)
821 Groove

Claims (5)

A reflector having a reflective surface;
A support provided on the front surface of the reflector, and a light-emitting element facing the reflective surface ;
With
A light source unit comprising: a support made of a heat conductive material; and a conductor formed on the support made of a material having conductivity and heat conductivity to electrically and thermally connect the light emitting element. Multiple
The reflector passing the conductor extending from the support, has a hole or groove extending on the back from the front of the reflector,
Provided on the back surface of the reflector, comprising a substrate with a heat dissipation pad on the front surface and a wiring circuit on the rear surface,
A plurality of the light source units are disposed on the substrate;
The support, the reflector, and the substrate are fixed by screwing a screw having high thermal conductivity from the rear side of the substrate to the conductor.
A light source device characterized by that. The light source device according to claim 1, wherein the reflector is made of an insulating material. A plurality of reflectors having a reflective surface;
One large support body provided on the front surface of the plurality of reflectors, the light emitting element being disposed opposite to each reflecting surface of the plurality of reflectors;
With
The large support is formed of a heat conductive material, and the large support is formed of a material having conductivity and heat conductivity, and electrically and thermally connects the light emitting element. Comprising a light source unit comprising
The plurality of reflectors have holes or grooves extending from the front surface to the back surface of the reflector through which the conductor extending from the large support is passed.
Provided on the back surface of the plurality of reflectors, comprising a substrate having a heat dissipation pad on the front surface and a wiring circuit on the rear surface,
The one large support body, the plurality of reflectors, and the substrate are fixed by screwing a screw having high thermal conductivity into the conductor from the rear side of the substrate.
A light source device characterized by that. A block-shaped reflector having a plurality of recesses and having a reflecting surface in each recess;
One large support provided on the front surface of the block-shaped reflector and having a light-emitting element disposed opposite to each reflecting surface of the block-shaped reflector;
With
The large support is formed of a heat conductive material, and the large support is formed of a material having conductivity and heat conductivity, and electrically and thermally connects the light emitting element. Comprising a light source unit comprising
The block-shaped reflector has a hole or groove extending from the front surface to the back surface of the block-shaped reflector, through which the conductor extending from the large support body passes.
Provided on the back side of the block-shaped reflector, comprising a substrate with a heat dissipation pad on the front side and a wiring circuit on the back side,
The one large support, the block-shaped reflector, and the substrate are fixed by screwing a screw having high thermal conductivity into the conductor from the rear side of the substrate.
A light source device characterized by that.   5. The light source unit and the substrate are arranged in a housing, a bent portion is formed on the large support, and the bent portion is closely attached to a wall surface of the housing. The light source device according to claim 1.

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