Light source device

Abstract

To provide a light source device capable of easily replacing a mounting substrate without damaging the surrounding mounting substrate.SOLUTION: A light source device includes an attachment plate including an attachment surface, a plurality of mounting boards detachably attached to the attachment surface and having a plurality of light emitting elements, a plurality of pins protruding from the attachment surface with a dimension larger than a height dimension of the mounting board and capable of positioning the mounting board, and a plurality of through-hole portions provided in the mounting board and through which the plurality of pins pass.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a light source device capable of irradiating a target with light. [Background technology]

[0002] For example, a lighting device used as a backlight for a liquid crystal device is known (see, for example, Patent Document 1). In this device, a light source unit is configured in which a positioning component is mounted together with an LED, thereby improving ease of replacement. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-156004 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] Incidentally, some light source devices used for industrial purposes have multiple mounting boards, each with a large number of light-emitting elements mounted thereon. In such light source devices, if a malfunction occurs in a mounting board, it is necessary to replace it. However, since the mounting boards are closely spaced with minimal gaps between them, there is a risk that the mounting boards surrounding the mounting board to be replaced may be damaged during the replacement work.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a light source device in which the mounting board can be easily replaced without damaging the surrounding mounting board. [Means for solving the problem]

[0006] The above problems are solved by the present invention. That is, the light source device of the present invention (1) comprises: a mounting plate including a mounting surface; a plurality of mounting substrates each having a plurality of light emitting elements, each of which is detachably attached to the attachment surface; a plurality of pins that protrude from the attachment surface with a dimension greater than the height dimension of the mounting board and that can position the mounting board; a plurality of through-holes provided in the mounting substrate and through which the plurality of pins are passed; Equipped with.

[0007] The light source device of the present invention (2) is the light source device according to (1), The dimension of the pins protruding from the mounting surface is at least twice the height of the mounting board.

[0008] The light source device of the present invention (3) is the light source device according to (2), a fixing member for fixing the mounting board to the attachment plate; The dimension by which the pins protrude from the mounting surface is smaller than the dimension by which the fixing member protrudes from the mounting surface.

[0009] The light source device of the present invention (4) is the light source device according to any one of (1) to (3), at least one of the plurality of through-hole portions is an elongated hole that is elongated in a second direction perpendicular to a first direction in which the plurality of mounting boards are arranged on the attachment surface, At least one of the plurality of through-hole portions is a hole having a shape complementary to that of the pin.

[0010] The light source device of the present invention (5) is the light source device according to (4), the plurality of mounting substrates include a first mounting substrate and a second mounting substrate arranged in a pair in the second direction; the plurality of through-hole portions are provided at a first position of the first mounting substrate close to the second mounting substrate, and at a second position located on the opposite side of the first mounting substrate with the plurality of light-emitting elements sandwiched therebetween as viewed from the first position, the slot is provided at the second position, A hole having a shape complementary to the pin is provided at the first location.

[0011] The light source device of the present invention (6) is the light source device according to any one of (1) to (3), Each of the plurality of pins has a hemispherical portion at an end opposite to the mounting surface.

[0012] The light source device of the present invention (7) is the light source device according to any one of (1) to (3), Each of the plurality of pins has a tapered portion at an end opposite to the mounting surface, the diameter of which decreases with increasing distance from the mounting surface.

[0013] The light source device of the present invention (8) is the light source device according to any one of (1) to (3), The gap between two adjacent mounting substrates is equal to or smaller than the height of the mounting substrates.

[0014] The light source device of the present invention (9) is the light source device according to any one of (1) to (3), Each of the plurality of pins is cylindrical.

[0015] The light source device of the present invention (10) is the light source device according to any one of (1) to (3), Each of the plurality of pins is prismatic.

[0016] Further, the light source device of the present invention (11) is the light source device according to any one of (1) to (3), some of the pins are cylindrical; Another portion of the plurality of pins is prismatic.

[0017] Furthermore, the light source device of the present invention (12) a mounting plate including a mounting surface; a plurality of mounting substrates each having a plurality of light-emitting elements and each being detachably attached to the attachment surface with a gap dimension between them equal to or smaller than the height dimension of the mounting substrates; a plurality of protrusions that protrude from the attachment surface by a dimension greater than a height dimension of the mounting board and that are capable of positioning the mounting board; a plurality of notches provided in the mounting substrate and through which the plurality of protrusions are passed; Equipped with.

[0018] The light source device of the present invention (13) is the light source device according to (12), The protrusion and the notch are provided on both sides of the mounting substrate sandwiching the plurality of light emitting elements in a second direction perpendicular to a first direction in which the plurality of mounting substrates are arranged.

[0019] The light source device of the present invention (14) is the light source device according to (13), The protrusion and the notch are provided at diagonal positions on the mounting substrate. [Effects of the Invention]

[0020] According to the present invention, it is possible to provide a light source device in which the mounting board can be easily replaced without damaging the surrounding mounting board. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing a light source device according to a first embodiment. [Figure 2] FIG. 2 is a plan view showing the light source device shown in FIG. [Figure 3] 2 is a cross-sectional view of the light source device shown in FIG. 1 taken along the vertical direction. [Figure 4] 2 is a plan view showing an attachment plate and a mounting board of the light source device shown in FIG. [Figure 5] 5 is a front view showing the attachment plate and the mounting board shown in FIG. 4. [Figure 6] 6 is a front view showing a state in which one mounting board is suspended in the air in the attachment plate and mounting boards shown in FIG. 5. FIG. [Figure 7] 6 is a front view showing the mounting plate and mounting board shown in FIG. 5 in a state where the mounting board is being attached. FIG. [Figure 8]8 is an enlarged front view of the attachment plate and the mounting board shown in FIG. 7. [Figure 9] 6 is a front view showing the mounting plate and mounting board shown in FIG. 5 in a state where the mounting board is being attached. FIG. [Figure 10] 10 is a front view showing the attachment plate and the mounting board shown in FIG. 9 from the front direction. [Figure 11] FIG. 10 is a front view showing a state in which the mounting board is being attached to the attachment plate and mounting board of a modified example of the light source device of the first embodiment. [Figure 12] FIG. 10 is a front view showing a state in which the mounting board is being mounted on the attachment plate and mounting board of the reference example. [Figure 13] FIG. 10 is a plan view showing an attachment plate and a mounting substrate of a light source device according to a second embodiment. [Figure 14] 14 is a front view showing the mounting plate shown in FIG. 13 from the front direction. FIG. [Figure 15] FIG. 10 is a plan view showing an attachment plate and a mounting substrate of a light source device according to a third embodiment. [Figure 16] 16 is a front view showing the mounting plate shown in FIG. 15 from the front direction. FIG. [Figure 17] FIG. 10 is a plan view showing an attachment plate and a mounting substrate of a light source device according to a fourth embodiment. [Figure 18] 18 is a front view showing the mounting plate shown in FIG. 17 from the front direction. [Figure 19] FIG. 10 is a plan view showing an attachment plate and a mounting substrate of a light source device according to a fifth embodiment. [Figure 20] 20 is a front view showing the attachment plate and the mounting board shown in FIG. 19 from the front direction. FIG. [Figure 21] FIG. 13 is a plan view showing an attachment plate and a mounting substrate of a light source device according to a sixth embodiment. [Figure 22] 22 is a front view showing the attachment plate and the mounting board shown in FIG. 21 from the front direction. FIG. [Figure 23] FIG. 13 is a plan view showing an attachment plate and a mounting substrate of a light source device according to a seventh embodiment. [Figure 24] 24 is a side view showing the mounting plate shown in FIG. 23 from the side direction. FIG. [Figure 25]24 is a plan view showing a state in which the mounting board is removed from the attachment plate shown in FIG. 23. FIG. [Figure 26] FIG. 24 is a plan view showing the mounting board shown in FIG. 23 alone. [Figure 27] FIG. 13 is a plan view showing an attachment plate and a mounting substrate of a light source device according to an eighth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an embodiment of a light source device of the present invention will be described with reference to the drawings. The light source device of the present invention is used as a UV light source for curing a UV-curable resin or the like applied to an object, for example. [First embodiment]

[0023] A light source device 11 of a first embodiment will be described with reference to FIGS. 1 to 9. As shown in FIGS. 1 to 3, the light source device 11 includes a housing 12 having a rectangular box shape when viewed from above, a rectangular opening 13 provided on the top surface of the housing 12, and a cover member 14 that covers the opening 13. The housing 12 is made of, for example, a general resin material. The opening 13 allows a plurality of mounting substrates 16 (light-emitting elements 17) attached to an attachment plate 15 (described later) to be exposed to the outside of the housing 12. The cover member 14 is made of a light-transmitting material, such as glass or resin, and has a flat plate shape. The cover member 14 is attached to the housing 12 so as to cover the opening 13.

[0024] As shown in Figures 3 and 4, the light source device 11 includes a mounting plate 15, a power supply / control circuit board 21 that is detachably attached to the mounting plate 15 via studs 18 or the like, a connector 22 electrically connected to the power supply / control circuit board 21, a plurality of mounting boards 16 that are detachably attached to a mounting surface 23 that is one side of the mounting plate 15, a plurality of pins 24 that are provided on the mounting surface 23 and that can position the plurality of mounting boards 16 with respect to the mounting plate 15, and a fixing member 25 for detachably fixing the plurality of mounting boards 16 to the mounting plate 15.

[0025] The mounting plate 15 is fixed by fitting it into ribs 26 or the like that protrude inward from the housing 12. The mounting plate 15 is configured as a so-called heat sink. More specifically, the mounting plate 15 is configured as a water-cooled heat sink. The mounting plate 15 is made of a metal material with good thermal conductivity, such as copper or aluminum alloy. The inside of the mounting plate 15 is hollow, allowing cooling water to circulate inside.

[0026] The light source device 11 has a first pipe 27 connected to the mounting plate 15 for supplying cooling water, and a second pipe 28 connected to the mounting plate 15 for discharging cooling water. The first pipe 27 and the second pipe 28 are connected to a cooling water supply unit (not shown) outside the housing 12, and are configured to receive a supply of low-temperature cooling water from the cooling water supply unit so that cooling water circulates within the mounting plate at all times when the light source device 11 is powered on. The configuration of the mounting plate 15 is not limited to this, and it may, of course, be an air-cooled heat sink.

[0027] The power supply and control circuit board 21 is connected to a power supply unit (not shown) outside the housing 12 via a connector 22. The power supply and control circuit board 21 is also connected to a power switch (not shown) outside the housing 12 via a connector 22. The power supply and control circuit board 21 is electrically connected to each of the multiple mounting boards 16 via wiring. The power supply and control circuit board 21 has a power circuit that controls the power supply to the light emitting elements 17. The power supply and control circuit board 21 supplies power to the multiple mounting boards 16 (the light emitting elements 17 included in the mounting boards 16) and can control the on / off of the multiple mounting boards 16 (the light emitting elements 17 included in the mounting boards 16).

[0028] As shown in FIG. 4, the mounting substrates 16 are arranged side by side on the mounting plate 15 in a first direction D1 that is along the longitudinal direction of the mounting plate 15. Each mounting substrate 16 includes a substrate 31 formed in the shape of a rectangular plate, a plurality of light-emitting elements 17 mounted in a lattice pattern on the substrate 31, and wiring 32 (see FIG. 8) for supplying power to the light-emitting elements 17. The plurality of light-emitting elements 17 are provided across the entire width of the substrate 31 in the first direction D1. The plurality of light-emitting elements 17 are collectively provided in the center of the substrate 31 in a second direction D2 that is perpendicular to the first direction D1. Each of the plurality of light-emitting elements 17 has a rectangular, flat chip shape when viewed from above. The substrate 31 is formed, for example, from a printed wiring board or the like whose base material is a general glass epoxy resin. The material forming the substrate 31 is not limited to glass epoxy resin. The substrate 31 may be a resin substrate (paper phenolic substrate, paper epoxy substrate, composite substrate epoxy resin substrate, glass composite substrate, glass polyimide substrate, BT substrate, Teflon (registered trademark) substrate, PPO substrate) based on phenolic resin, polyimide resin, fluororesin, etc., or a ceramic substrate based on alumina, etc., an LTCC substrate based on glass ceramic, a metal-based substrate based on aluminum, etc., or other rigid substrate.

[0029] Each of the plurality of light-emitting elements 17 is configured as a general UV LED capable of emitting UV light. The dimension of the gap between adjacent mounting substrates 16 is configured to be, for example, the same dimension as the thickness dimension of the mounting substrate 16. The dimension of the gap is configured to be, for example, 1.0 to 1.5 mm.

[0030] The substrate 31 has fixing holes 33 at its four corners for passing the fixing members 25 therethrough. The substrate 31 also has a plurality of through-holes 34 for passing the pins 24 therethrough. The plurality of through-holes 34 are provided on both sides of the substrate 31, sandwiching the plurality of light-emitting elements 17 therebetween. That is, in this embodiment, the plurality of through-holes 34 are configured as two. One of the through-holes 34 is configured as a first through-hole 34A having a perfect circle shape, for example, and the other through-hole 34 is configured as a second through-hole 34B (long hole) having an oval shape elongated in a second direction D2 perpendicular to the first direction D1. The first through-hole 34A has a shape complementary to that of the pin 24.

[0031] The thickness of the substrate 31 is, for example, about 1 mm. The thickness of the light emitting element 17 is, for example, about 0.1 mm. Therefore, the thickness of the mounting substrate 16 is, for example, about 1.1 mm.

[0032] 4 and 5, the multiple pins 24 are arranged in multiple groups 35 corresponding to the respective mounting boards 16. Each group 35 includes a pair of pins 24. A first pin 24A, which is one of the pair of pins 24, is inserted into a first through-hole 34A, and a second pin 24B, which is the other of the pair of pins 24, is inserted into a second through-hole 34B.

[0033] In this embodiment, two pins 24 are provided corresponding to the two through holes of one mounting substrate 16. Each of the multiple pins 24 protrudes from the mounting surface 23 of the mounting plate 15. The pins 24 are formed, for example, from a metal material and fixed to the mounting plate 15 by brazing or the like. The length by which the pins 24 protrude from the mounting surface 23 is, for example, greater than the height of the mounting substrate 16, more specifically, at least twice the height of the mounting substrate 16. More specifically, the length by which the pins 24 protrude from the mounting surface 23 is 2.0 to 5.0 mm.

[0034] In this embodiment, the pin 24 is formed in a cylindrical shape, and the tip of the pin 24 is chamfered.

[0035] The oval second through hole 34B can accommodate dimensional tolerances between a pair of pins 24 (first pin 24A, second pin 24B) included in group 35, dimensional tolerances between the first through hole 34A and the second through hole 34B, etc.

[0036] As shown in FIG. 6, fixing member 25 is configured, for example, with a stepped knurled screw or the like so that an operator can fasten it manually. Fixing member 25 has threaded portion 25A with a thread formed around its periphery and finger hook portion 25B located above threaded portion 25A and on which a finger can be hooked. The height dimension of finger hook portion 25B is greater than the distance that pin 24 protrudes from mounting surface 23. More specifically, the height dimension of finger hook portion 25B is configured to be 5.0 to 8.0 mm. The height dimension of finger hook portion 25B is equal to the height that fixing member 25 fastened to mounting plate 15 protrudes from mounting surface 23.

[0037] Next, a description will be given of a method for replacing (repairing) the mounting board 16 including the broken light emitting element 17 in the light source device 11 of this embodiment. The mounting board 16 is replaced manually by an operator.

[0038] The worker removes the mounting board 16 including the faulty light emitting element 17 from the mounting plate 15. At that time, the worker turns and removes the fixing member 25 with his fingers, and then removes the mounting board 16. Then, as shown in FIG. 6, the worker aligns and attaches a new mounting board 16 to a predetermined mounting position on the mounting plate 15. At this time, various wires for electrically connecting the new mounting board 16 to the power supply and control circuit board 21 are already connected to the new mounting board 16.

[0039] To attach the mounting board 16 to the attachment plate 15, the through-hole portions 34 (first through-hole 34A, second through-hole 34B) are aligned with the pair of pins 24 and inserted. At this time, it is rare for an operator to be able to install the mounting board 16 in the exact position relative to the final target position from the beginning. In most cases, as shown in Figures 7 and 8, the position of the mounting board 16 is shifted to the left or right with respect to the correct installation position, or the mounting board 16 is tilted diagonally relative to the horizontal direction. Similarly, as shown in Figures 9 and 10, the mounting board 16 may be rotated within the horizontal plane.

[0040] However, even if the mounting board 16 is misaligned in this way, in this embodiment, the length dimension of the pins 24 protruding from the attachment surface 23 is configured to be at least twice the height dimension of the mounting board 16, thereby reducing the risk that the mounting board 16 in the middle of being attached will collide with another mounting board 16 that has already been installed.

[0041] The worker first places the mounting board 16 on the pins 24, then correctly aligns the through-hole portions 34 (first through-hole 34A, second through-hole 34B) with the pair of pins 24, and inserts the mounting board 16 into the pair of pins 24. The worker fastens four fixing members 25 to the four corners of the mounting board 16 inserted into the pair of pins 24, and the replacement work of the mounting board 16 is completed.

[0042] According to this embodiment, the following can be said: The light source device 11 includes a mounting plate 15 including a mounting surface 23, a plurality of mounting substrates 16 that are detachably mounted to the mounting surface 23 and have a plurality of light-emitting elements 17, a plurality of pins 24 that protrude from the mounting surface 23 by a dimension larger than the height dimension of the mounting substrates 16 and that can position the mounting substrates 16, and a plurality of through-holes 34 that are provided in the mounting substrates 16 and through which the plurality of pins 24 pass.

[0043] According to this configuration, the pins 24 protrude from the attachment surface 23 by a dimension greater than the height dimension of the mounting board 16, and therefore when attaching the mounting board 16 to the attachment surface 23 in order to replace the mounting board 16, the mounting board 16 is first placed on the pins 24, and then the mounting board 16 is slid laterally to correctly align the through-hole portions 34 with the pins 24, thereby preventing the mounting board 16 from hitting another mounting board 16. This makes it possible to minimize the occurrence of problems when the mounting board 16 is attached, such as damaging the light-emitting elements 17 on another adjacent mounting board 16.

[0044] The dimension by which the multiple pins 24 protrude from the attachment surface 23 is at least twice the height dimension of the mounting substrate 16. This configuration can further prevent the occurrence of problems such as damage to light emitting elements 17 and the like on adjacent mounting substrates 16 when the mounting substrate 16 is attached.

[0045] A fixing member 25 for fixing the mounting board 16 to the mounting plate 15 is provided, and the dimension by which the pins 24 protrude from the mounting surface 23 is smaller than the dimension by which the fixing member 25 protrudes from the mounting surface 23.

[0046] This configuration allows the length of the pin 24 protruding from the mounting surface 23 to be within an appropriate range. This prevents the pin 24 from being too long and casting a shadow on the light emitted from the light emitting element 17.

[0047] At least one of the multiple through hole portions 34 is a long, narrow hole extending in a second direction D2 perpendicular to a first direction D1 in which the multiple mounting substrates 16 are arranged on the mounting surface 23, and at least one of the multiple through hole portions 34 is a hole having a shape complementary to that of the pin 24.

[0048] With this configuration, even if manufacturing errors occur in the positions where the through-holes 34 are formed or the positions where the pins 24 are installed, the errors can be absorbed by the elongated holes. Furthermore, because the through-holes 34 are elongated in the second direction D2 that is perpendicular to the first direction D1 in which the mounting boards 16 are lined up, it is possible to prevent the mounting boards 16 from shifting in position in the first direction D1 when the mounting boards 16 are attached, thereby preventing problems such as contact with adjacent mounting boards 16.

[0049] The gap dimension between two adjacent mounting substrates 16 is equal to or less than the height dimension of the mounting substrates 16. With this configuration, the mounting substrates 16 can be arranged at high density so as to satisfy the specifications of the light source device 11, such as the required illuminance.

[0050] Next, modified embodiments of the light source device 11 of this embodiment will be described. In the following modified embodiments and each embodiment, differences from the first embodiment will be mainly described, and descriptions of parts common to the first embodiment will be omitted. (Modification of the first embodiment)

[0051] A light source device 11 of a first modified example will be described with reference to Fig. 11. In this modified example, the length dimension of the pin 24 protruding from the mounting surface 23 is different from that of the first embodiment, but other parts are common to the first embodiment.

[0052] In this embodiment, the length of the pin 24 protruding from the mounting surface 23 is, for example, seven times or more the height of the mounting board 16. More specifically, the length of the pin 24 protruding from the mounting surface 23 is 8.0 mm.

[0053] Next, a method for replacing (repairing) the mounting substrate 16 including the broken light emitting element 17 in the light source device 11 of this modified example will be described.

[0054] The worker removes the mounting board 16 including the defective light emitting element 17 from the mounting plate 15. As shown in FIG.

[0055] To attach the mounting board 16 to the attachment plate 15, the through-hole portions 34 (first through-hole 34A, second through-hole 34B) are aligned with the pair of pins 24 and inserted. At this time, as shown in FIG. 11 , the mounting board 16 may be significantly tilted relative to the horizontal direction (15° in FIG. 11 ) or significantly misaligned relative to the horizontal direction (approximately 5 mm in FIG. 11 ). In this embodiment, even if the mounting board 16 is misaligned in this way, the length of the pins 24 protruding from the attachment surface 23 is configured to be seven times or more the height of the mounting board 16, thereby reducing the risk of the mounting board 16 colliding with another mounting board 16 that is already installed.

[0056] The worker first places the mounting board 16 on the pins 24, then correctly aligns the through-hole portions 34 (first through-hole 34A, second through-hole 34B) with the pair of pins 24, and inserts the mounting board 16 into the pair of pins 24. The worker fastens four fixing members 25 to the four corners of the mounting board 16 inserted into the pair of pins 24, and the replacement work of the mounting board 16 is completed. (Reference example)

[0057] A light source device 11 of a reference example will be described with reference to Fig. 12. In this reference example, the length dimension of the pin 24 protruding from the mounting surface 23 is different from that of the first embodiment, but other parts are common to the first embodiment.

[0058] In the reference example, the length of the pin 24 protruding from the mounting surface 23 is configured to be, for example, approximately equal to the height of the mounting board 16. More specifically, the length of the pin 24 protruding from the mounting surface 23 is configured to be 1.5 mm.

[0059] Next, a method for replacing (repairing) the mounting board 16 including the broken light emitting element 17 in the light source device 11 of this reference example will be described. In this reference example, the length dimension of the pin 24 protruding from the attachment surface 23 is insufficient, so that the mounting board 16 to be mounted may come into contact with an adjacent mounting board 16, as shown in Fig. 12, potentially damaging the light emitting element 17 of the adjacent mounting board 16. [Second embodiment]

[0060] A light source device 11 of a second embodiment will be described with reference to Figures 13 and 14. In this embodiment, the shape of the tip portions of the multiple pins 24 is different from that of the first embodiment, but other parts are common to the first embodiment.

[0061] The pins 24 are formed of, for example, a metal material and fixed to the mounting plate 15 by brazing or the like. The length of the pins 24 protruding from the mounting surface 23 is, for example, at least twice the height of the mounting board 16. More specifically, the length of the pins 24 protruding from the mounting surface 23 is 2.0 to 5.0 mm.

[0062] In this embodiment, the pin 24 is formed in a cylindrical shape. The pin 24 has a hemispherical portion 36 at its tip.

[0063] Next, a method for replacing (repairing) the mounting substrate 16 including the broken light emitting element 17 in the light source device 11 of this embodiment will be described.

[0064] The worker removes the mounting board 16 including the defective light emitting element 17 from the mounting plate 15 .

[0065] To attach the mounting board 16 to the attachment plate 15, the through-hole portions 34 (first through-hole 34A, second through-hole 34B) are aligned with the pair of pins 24 and inserted. At this time, it is often the case that the position of the mounting board 16 is shifted to the left or right with respect to the correct attachment position, or that the mounting board 16 is tilted diagonally relative to the horizontal direction. Similarly, there are also cases where the mounting board 16 is rotated within the horizontal plane.

[0066] After first placing the mounting board 16 on the pins 24, the worker correctly aligns the through-hole portions 34 (first through-hole 34A, second through-hole 34B) with the pair of pins 24, and inserts the mounting board 16 into the pair of pins 24. At this time, since the tip of the pin 24 has a hemispherical portion 36, the mounting board 16 can be easily inserted into the pins 24.

[0067] The mounting board 16 is inserted into the pair of pins 24, and the four fixing members 25 are fastened to the four corners, completing the replacement of the mounting board 16.

[0068] According to this embodiment, the following can be said: Each of the multiple pins 24 has a hemispherical portion 36 at the end opposite to the mounting surface 23. With this configuration, when a worker attaches the mounting board 16 to the mounting plate 15, the worker can easily insert the mounting board 16 into the pins 24. [Third embodiment]

[0069] A light source device 11 of a third embodiment will be described with reference to Figures 15 and 16. In this embodiment, the shape of the tip portions of the multiple pins 24 is different from that of the first embodiment, but other parts are common to the first embodiment.

[0070] The pins 24 are formed of, for example, a metal material and fixed to the mounting plate 15 by brazing or the like. The length of the pins 24 protruding from the mounting surface 23 is, for example, at least twice the height of the mounting board 16. More specifically, the length of the pins 24 protruding from the mounting surface 23 is 2.0 to 5.0 mm.

[0071] In this embodiment, the pin 24 is formed in a cylindrical shape. The pin 24 has a conical tapered portion 37 at its tip. The diameter of the tapered portion 37 decreases as it gets further away from the mounting surface 23.

[0072] Next, a method for replacing (repairing) the mounting substrate 16 including the broken light emitting element 17 in the light source device 11 of this embodiment will be described.

[0073] The worker removes the mounting board 16 including the defective light emitting element 17 from the mounting plate 15 .

[0074] To attach the mounting board 16 to the attachment plate 15, the through-hole portions 34 (first through-hole 34A, second through-hole 34B) are aligned with the pair of pins 24 and inserted. At this time, it is often the case that the position of the mounting board 16 is shifted to the left or right with respect to the correct attachment position, or that the mounting board 16 is tilted diagonally relative to the horizontal direction. Similarly, there are also cases where the mounting board 16 is rotated within the horizontal plane.

[0075] After first placing the mounting board 16 on the pins 24, the worker correctly aligns the through-hole portions 34 (first through-hole 34A, second through-hole 34B) with the pair of pins 24, and inserts the mounting board 16 into the pair of pins 24. At this time, since the tip of the pin 24 is configured with the tapered portion 37, the mounting board 16 can be easily inserted into the pins 24.

[0076] The mounting board 16 is inserted into the pair of pins 24, and the four fixing members 25 are fastened to the four corners, completing the replacement of the mounting board 16.

[0077] According to this embodiment, the following can be said: Each of the plurality of pins 24 has, at the end opposite to the mounting surface 23, a tapered portion 37 whose diameter decreases as it goes away from the mounting surface 23.

[0078] According to this configuration, when an operator attaches the mounting board 16 to the attachment plate 15, the mounting board 16 can be easily inserted into the pins 24. [Fourth embodiment]

[0079] A light source device 11 of a fourth embodiment will be described with reference to Figures 17 and 18. In this embodiment, the shape of each of the multiple pins 24 is different from that of the first embodiment, but other parts are common to the first embodiment.

[0080] The pins 24 are formed of, for example, a metal material and fixed to the mounting plate 15 by brazing or the like. The length of the pins 24 protruding from the mounting surface 23 is, for example, at least twice the height of the mounting board 16. More specifically, the length of the pins 24 protruding from the mounting surface 23 is 2.0 to 5.0 mm.

[0081] In this embodiment, the pins 24 are formed in a rectangular column shape. The tips of the pins 24 are chamfered. One side of the through-hole portion 34 of the mounting substrate 16 is configured as, for example, a rectangular first through-hole 34A, and the other side of the through-hole portion 34 is configured as, for example, a thin and oval second through-hole 34B (long hole) that is elongated in a second direction D2 perpendicular to the first direction D1. The first through-hole 34A has a shape complementary to that of the pins 24.

[0082] This embodiment also provides the same effects as the first embodiment. [Fifth embodiment]

[0083] A light source device 11 of a fifth embodiment will be described with reference to Figures 19 and 20. In this embodiment, the shape of each of the multiple pins 24 is different from that of the first embodiment, but other parts are common to the first embodiment.

[0084] As shown in Fig. 19, the first pin 24A is formed in a cylindrical shape. The second pin 24B is formed in a prismatic shape. The first pin 24A is inserted into a first through-hole 34A which is a perfect circle. The second pin 24B is inserted into a second through-hole 34B which is an oval that is elongated in the second direction D2.

[0085] This embodiment also provides the same effects as the first embodiment. [Sixth embodiment]

[0086] 21 and 22, a light source device 11 of the sixth embodiment will be described. This embodiment differs from the first embodiment in that a block-shaped protrusion 42 is provided instead of the multiple pins 24, and that a notch 41 is provided instead of the through-hole portions 34 (first through-hole 34A, second through-hole 34B) of the substrate 31, but other parts are common to the first embodiment.

[0087] The substrate 31 has fixing holes 33 at its four corners for passing the fixing members 25 therethrough. The substrate 31 also has a plurality of notches 41 for passing the protrusions 42 therethrough. The plurality of through-holes 34 are provided on both sides of the substrate 31, sandwiching the plurality of light-emitting elements 17 therebetween, in the second direction D2. That is, in this embodiment, the plurality of notches 41 are configured as two. One of the notches 41 is configured as a rectangular shape cut out from one side 43 (e.g., the side 43 on the short side) of the substrate 31 in the first direction D1. The other notch 41 is configured as a rectangular shape cut out from another side 43 (e.g., the side 43 on the short side) of the substrate 31 in the first direction D1. The other notch 41 is provided in a position opposite to one of the notches 41.

[0088] The multiple protrusions 42 have multiple groups 35 corresponding to the respective mounting boards 16. Each group 35 includes a pair of protrusions 42. A first protrusion 42A, which is one of the pair of protrusions 42, is inserted into one of the notches 41, and a second protrusion 42B, which is the other of the pair of protrusions 42, is inserted into the other of the notches 41.

[0089] In this embodiment, the plurality of protrusions 42 are configured as two protrusions corresponding to the two notches 41 of one mounting substrate 16. Each of the plurality of protrusions 42 protrudes from the mounting surface 23 of the mounting plate 15. The protrusions 42 are formed, for example, from a metal material and fixed to the mounting plate 15 by brazing or the like. The length by which the protrusions 42 protrude from the mounting surface 23 is configured to be, for example, at least twice the height of the mounting substrate 16. More specifically, the length by which the protrusions 42 protrude from the mounting surface 23 is configured to be 2.0 to 5.0 mm.

[0090] In this embodiment, the protrusion 42 is formed in the shape of a rectangular block when viewed from above. The protrusion 42 has a shape complementary to the notch 41. The tip of the protrusion 42 is chamfered.

[0091] Next, a method for replacing (repairing) the mounting substrate 16 including the broken light emitting element 17 in the light source device 11 of this embodiment will be described.

[0092] The worker removes the mounting board 16 including the defective light emitting element 17 from the mounting plate 15 .

[0093] To attach the mounting board 16 to the attachment plate 15, the multiple notches 41 (one of the notches 41, the other of the notches 41) are aligned with the pair of protrusions 42 and inserted. At this time, it is often the case that the position of the mounting board 16 is shifted to the left or right with respect to the correct attachment position, or that the mounting board 16 is tilted diagonally relative to the horizontal direction. Similarly, there are also cases where the mounting board 16 is rotated within the horizontal plane.

[0094] The worker first places the mounting board 16 on the protrusions 42, then correctly aligns the notches 41 (one of the notches 41, the other of the notches 41) with the pair of protrusions 42, and inserts the mounting board 16 into the pair of protrusions 42. At this time, these insertions can also be performed in order, for example, by inserting the first protrusion 42A into one of the notches 41 and then inserting the second protrusion 42B into the other notch 41.

[0095] The mounting board 16 is inserted into the pair of protrusions 42, and the four fixing members 25 are fastened to the four corners, completing the replacement of the mounting board 16.

[0096] According to this embodiment, the following can be said: Light source device 11 includes mounting plate 15 including mounting surface 23, a plurality of mounting substrates 16 each having a plurality of light emitting elements 17 and each being detachably mounted on mounting surface 23 with a gap therebetween equal to or less than the height of mounting substrate 16, a plurality of protrusions 42 protruding from mounting surface 23 by a dimension larger than the height of mounting substrate 16 and enabling positioning of mounting substrate 16, and a plurality of notches 41 provided in mounting substrate 16 and through which protrusions 42 pass.

[0097] According to this configuration, the protrusion 42 protrudes from the mounting surface 23 by a dimension greater than the height dimension of the mounting board 16, so that when mounting the mounting board 16 on the mounting surface 23 in order to replace the mounting board 16, the mounting board 16 is first placed on the protrusion 42, and then the mounting board 16 is slid laterally to align the cutout 41 with the protrusion 42, thereby preventing the mounting board 16 from hitting another mounting board 16. This makes it possible to minimize the occurrence of problems such as damage to light emitting elements 17 and the like on adjacent mounting boards 16 when the mounting board 16 is attached.

[0098] The protrusion 42 and the notch 41 are provided on both sides of the mounting substrate 16 sandwiching the plurality of light emitting elements 17 in a second direction D2 perpendicular to the first direction D1 in which the plurality of mounting substrates 16 are arranged.

[0099] According to this configuration, for example, after one of the protruding portions 42 is passed through one of the notches 41, the other protruding portion 42 can be passed through the other notch 41. This makes it possible to easily position the mounting substrate 16 when replacing the mounting substrate 16 without damaging the other mounting substrate 16. [Seventh embodiment]

[0100] 23 to 26, a light source device 11 according to the seventh embodiment will be described. This embodiment differs from the sixth embodiment in that the block-shaped protrusion 42 is provided at a different position on the mounting plate 15 and the notch 41 is provided at a different position on the substrate 31, but the other parts are common to the sixth embodiment.

[0101] The substrate 31 has fixing holes 33 at its four corners for passing the fixing members 25 therethrough. The substrate 31 also has a plurality of notches 41 for passing the protrusions 42 therethrough. The plurality of through-holes 34 are provided on both sides of the substrate 31, sandwiching the plurality of light-emitting elements 17 therebetween. That is, in this embodiment, the plurality of notches 41 are configured as two. One of the notches 41 is configured as a rectangular shape that is elongated in the first direction D1 from one corner of the substrate 31. The other notch 41 is configured as a rectangular shape that is elongated in the first direction D1 from another corner of the substrate 31. The other notch 41 is provided at a position diagonal to one of the notches 41.

[0102] The multiple protrusions 42 have multiple groups 35 corresponding to the respective mounting boards 16. Each group 35 includes a pair of protrusions 42. A first protrusion 42A, which is one of the pair of protrusions 42, is inserted into one of the notches 41, and a second protrusion 42B, which is the other of the pair of protrusions 42, is inserted into the other of the notches 41.

[0103] In this embodiment, the plurality of protrusions 42 are configured as two protrusions corresponding to the two notches 41 of one mounting substrate 16. Each of the plurality of protrusions 42 protrudes from the mounting surface 23 of the mounting plate 15. The protrusions 42 are formed, for example, from a metal material and fixed to the mounting plate 15 by brazing or the like. The length by which the protrusions 42 protrude from the mounting surface 23 is configured to be, for example, at least twice the height of the mounting substrate 16. More specifically, the length by which the protrusions 42 protrude from the mounting surface 23 is configured to be 2.0 to 5.0 mm.

[0104] In this embodiment, the protrusion 42 is formed in the shape of a rectangular block when viewed from above. The protrusion 42 has a shape complementary to the cutout 41. The tip of the protrusion 42 is chamfered. The second protrusion 42 is provided at a diagonal position on the mounting substrate 16 relative to the first protrusion 42.

[0105] Next, a method for replacing (repairing) the mounting substrate 16 including the broken light emitting element 17 in the light source device 11 of this embodiment will be described.

[0106] The worker removes the mounting board 16 including the defective light emitting element 17 from the mounting plate 15 .

[0107] To attach the mounting board 16 to the attachment plate 15, the multiple notches 41 (one of the notches 41, the other of the notches 41) are aligned with the pair of protrusions 42 and inserted. At this time, it is often the case that the position of the mounting board 16 is shifted to the left or right with respect to the correct attachment position, or that the mounting board 16 is tilted diagonally relative to the horizontal direction. Similarly, there are also cases where the mounting board 16 is rotated within the horizontal plane.

[0108] The worker first places the mounting board 16 on the protrusions 42, then correctly aligns the notches 41 (one of the notches 41, the other of the notches 41) with the pair of protrusions 42, and inserts the mounting board 16 into the pair of protrusions 42. At this time, these insertions can also be performed in order, for example, by inserting the first protrusion 42A into one of the notches 41 and then inserting the second protrusion 42B into the other notch 41.

[0109] The mounting board 16 is inserted into the pair of protrusions 42, and the four fixing members 25 are fastened to the four corners, completing the replacement of the mounting board 16.

[0110] According to this embodiment, the following can be said: The protrusion 42 and the notch 41 are provided at diagonal positions of the mounting substrate 16.

[0111] According to this configuration, the notch 41 and the protrusion 42 can be disposed in a dead space on the mounting substrate 16. This makes it possible to effectively utilize such a dead space and smoothly position the mounting substrate 16 without damaging other mounting substrates 16. [Eighth embodiment]

[0112] A light source device 11 according to an eighth embodiment will be described with reference to Fig. 27. This embodiment differs from the first embodiment in that the mounting board 16 attached to the mounting plate 15 is disposed differently, but other parts are common to the first embodiment.

[0113] The multiple mounting substrates 16 include a first mounting substrate 16A (first substrate 31) and a second mounting substrate 16B (second substrate 31) that are aligned in a pair in the second direction D2. The first mounting substrate 16A and the second mounting substrate 16B are each arranged side by side in the first direction D1.

[0114] Each of the first substrate 31 and the second substrate 31 has fixing holes 33 at four corners thereof for passing fixing members 25 therethrough. The substrate 31 also has a plurality of through-holes 34 for passing pins 24 therethrough. The plurality of through-holes 34 are provided on both sides of the substrate 31 with the plurality of light-emitting elements 17 sandwiched therebetween. That is, in this embodiment, the plurality of through-holes 34 is configured to be two.

[0115] In the first mounting substrate 16A, one of the through-hole portions 34 is configured as, for example, a perfect circular first through-hole 34A. The first through-hole 34A is provided at a first position 51 of the first mounting substrate 16A close to the second mounting substrate 16B. The perfect circular first through-hole 34A is an example of a hole having a shape complementary to a pin as defined in the present invention.

[0116] In the first mounting substrate 16A, the other of the through-hole portions 34 is configured as, for example, a second through-hole 34B that is elongated in a second direction D2 that is perpendicular to the first direction D1. The second through-hole 34B is provided at a second position 52 that is located on the opposite side of the first mounting substrate 16A, with the multiple light-emitting elements 17 sandwiched between them, as viewed from the first position 51. The second through-hole 34B that is oval is an example of the long hole referred to in the present invention.

[0117] In the second mounting substrate 16B, one of the through-hole portions 34 is configured as a first through-hole 34A that is, for example, a perfect circle, and is provided at a first position 51 of the second mounting substrate 16B close to the first mounting substrate 16A. In the second mounting substrate 16B, the other of the through-hole portions 34 is configured as a second through-hole 34B that is, for example, an oval that is elongated in the second direction D2. The second through-hole 34B is provided at a second position 52 that is located on the opposite side of the first position 51 with the multiple light-emitting elements 17 of the second mounting substrate 16B sandwiched therebetween.

[0118] Next, a method for replacing (repairing) the mounting substrate 16 including the broken light emitting element 17 in the light source device 11 of this embodiment will be described. The replacement of the mounting substrate 16 is performed manually by an operator. In this embodiment, the following description will be given assuming that the light emitting element 17 of the first mounting substrate 16A has broken down.

[0119] The worker removes the first mounting board 16A including the broken light emitting element 17 from the attachment plate 15. At that time, the worker turns and removes the fixing member 25 with his fingers, and then removes the first mounting board 16A. Then, the worker aligns a new first mounting board 16A and attaches it to a predetermined attachment position on the attachment plate 15.

[0120] To attach the first mounting board 16A to the attachment plate 15, the through-hole portions 34 (first through-hole 34A, second through-hole 34B) are aligned with the pair of pins 24 and then inserted. At this time, it is often the case that the position of the mounting board 16 is shifted to the left or right with respect to the correct attachment position, or that the mounting board 16 is tilted obliquely relative to the horizontal direction. There are also cases where the mounting board 16 is rotated within the horizontal plane.

[0121] However, even if the mounting board 16 is misaligned in this manner, in this embodiment, the length dimension of the pins 24 protruding from the attachment surface 23 is configured to be at least twice the height dimension of the mounting board 16, thereby reducing the risk of the mounting board 16 colliding with another already-installed mounting board 16 during installation. Furthermore, in this embodiment, the oval second through-hole 34B in the first mounting board 16A is located far from the second mounting board 16B. Therefore, for example, by aligning the circular first through-hole 34A with the first pin 24A and then aligning the oval second through-hole 34B with the second pin 24B, the first mounting board 16A to be installed can be prevented from colliding with the second mounting board 16B. The mounting board 16 replacement operation is completed by fastening four fixing members 25 to the four corners of the mounting board 16 inserted onto the pair of pins 24.

[0122] According to this embodiment, the following can be said: In the light source device 11, the multiple mounting substrates 16 include a first mounting substrate 16A and a second mounting substrate 16B that are arranged in a pair in the second direction D2, the multiple through-hole portions 34 are provided at a first position 51 of the first mounting substrate 16A that is close to the second mounting substrate 16B, and at a second position 52 that is located on the opposite side of the first mounting substrate 16A from the first position 51 with the multiple light-emitting elements 17 of the first mounting substrate 16A sandwiched therebetween, the long hole is provided at the second position 52, and the hole having a shape complementary to the pin is provided at the first position 51.

[0123] According to this configuration, a long hole can be provided on the first mounting substrate 16A at a position far from the second mounting substrate 16B. As a result, when positioning the first mounting substrate 16A, for example, the pin 24 at the first position 51 can be inserted into a hole having a shape complementary to the pin 24 to position it, and then the pin 24 can be inserted into the long hole at the second position 52 to position it, thereby reducing the risk of the first mounting substrate 16A being significantly misaligned. This makes it possible to minimize the possibility of the first mounting substrate 16A coming into contact with the second mounting substrate 16B due to misalignment and damaging the light emitting elements 17 on the second mounting substrate 16B.

[0124] The above-described embodiment can be implemented with various further substitutions and modifications, and it goes without saying that the above-described different embodiments can be appropriately combined to form a single invention. [Explanation of symbols]

[0125] 11 Light source device 15 Mounting plate 16 Mounting board 17 Light-emitting element 23 Mounting surface 24-pin 25 Fixing member D1 1st direction D2 2nd direction 34 Through-hole section 34A 1st through hole 34B 2nd through hole 36 Hemisphere 37 Tapered section 41 Notch 42 Protrusion 43 Side 51 1st position 52 2nd position

Claims

1. a mounting plate including a mounting surface; a plurality of mounting substrates each having a plurality of light emitting elements, each of which is detachably attached to the attachment surface; a plurality of pins that protrude from the attachment surface with a dimension greater than the height dimension of the mounting board and that can position the mounting board; a plurality of through-holes provided in the mounting substrate and through which the plurality of pins are passed; A light source device comprising:

2. The light source device according to claim 1 , wherein the dimension of the plurality of pins protruding from the mounting surface is at least twice as large as the height of the mounting board.

3. a fixing member for fixing the mounting board to the attachment plate; 3. The light source device according to claim 2, wherein a length by which the plurality of pins protrude from the mounting surface is smaller than a length by which the fixing member protrudes from the mounting surface.

4. at least one of the plurality of through-hole portions is an elongated hole that is elongated in a second direction perpendicular to a first direction in which the plurality of mounting substrates are arranged on the attachment surface, 4. The light source device according to claim 1, wherein at least one of the plurality of through-hole portions is a hole having a shape complementary to that of the pin.

5. the plurality of mounting substrates include a first mounting substrate and a second mounting substrate arranged in a pair in the second direction, the plurality of through-hole portions are provided at a first position of the first mounting substrate close to the second mounting substrate, and at a second position located on an opposite side of the first mounting substrate with the plurality of light-emitting elements interposed therebetween as viewed from the first position, the slot is provided at the second position, The light source device according to claim 4 , wherein a hole having a shape complementary to the pin is provided at the first position.

6. 4. The light source device according to claim 1, wherein each of the plurality of pins has a hemispherical portion at an end opposite to the mounting surface.

7. 4. The light source device according to claim 1, wherein each of the plurality of pins has a tapered portion at an end opposite to the mounting surface, the diameter of which decreases with increasing distance from the mounting surface.

8. 4. The light source device according to claim 1, wherein a gap dimension between two adjacent mounting substrates is equal to or smaller than a height dimension of the mounting substrates.

9. 4. The light source device according to claim 1, wherein each of the plurality of pins is cylindrical.

10. 4. The light source device according to claim 1, wherein each of the plurality of pins is prismatic.

11. some of the pins are cylindrical; 4. The light source device according to claim 1, wherein the other part of the plurality of pins is prismatic.

12. a mounting plate including a mounting surface; a plurality of mounting substrates each having a plurality of light-emitting elements and each being detachably attached to the attachment surface with a gap dimension between them equal to or smaller than the height dimension of the mounting substrates; a plurality of protrusions that protrude from the attachment surface by a dimension greater than a height dimension of the mounting board and that are capable of positioning the mounting board; a plurality of notches provided in the mounting substrate and through which the plurality of protrusions are passed; A light source device comprising:

13. The light source device according to claim 12 , wherein the protrusion and the notch are provided on both sides of the mounting substrate sandwiching the plurality of light-emitting elements in a second direction perpendicular to a first direction in which the plurality of mounting substrates are arranged.

14. The light source device according to claim 13 , wherein the protrusion and the notch are provided at diagonal positions on the mounting substrate.

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