JP2008218345A - Light source device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device capable of enhancing productivity of a lid plate, of obviating the need of an existing board support plate, and of reducing the cost of a relatively large light source device. <P>SOLUTION: This light source device has the lid plates 3 closing an open part of a frame part 2; the lid plate 3 of a chassis B with a plurality of lamps arranged side by side in its inside is composed of first to third plate bodies 31, 32 and 33 arranged in parallel to one another in a direction along the surface of the lid plate 3, and connection members 34, 34 connecting the plate bodies 31, 32 and 31, 33 adjacent to each other; a board module C is composed by attaching a plurality of boards 5, 6 and 7 to the single plate body 31a; and thereby a special board support plate is eliminated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a light source device used as a light source of a display device such as a liquid crystal display device.

  In a display device such as a television, a light source device is disposed on the rear side of a display unit having an image display surface for displaying an image on the front side.

  The light source device includes, for example, a plurality of lamps having electrodes at both ends, a frame portion that forms a rectangular parallelepiped, and a cover plate that closes an open portion of the frame portion, and a chassis in which the lamps are juxtaposed, And an electrical component such as an inverter circuit board attached to the rear side of the cover plate of the chassis (see, for example, Patent Document 1). The lid plate has a rectangular shape corresponding to the frame portion, and is formed of a single plate body such as an aluminum plate or an iron plate, and the peripheral portion of the lid plate is coupled to the frame portion.

  FIG. 5 is a cross-sectional view showing the configuration of a conventional display device having a light source device, FIG. 6 is an exploded perspective view showing the configuration of the conventional light source device, and FIG. 7 is an exploded perspective view showing the configuration of the substrate module of the conventional light source device. It is. The thin display device includes a light source device 202 that irradiates light to the display unit 201 on the rear side of the display unit 201 having the panel 200 on the front side. The chassis 203 of the light source device 202 includes a frame portion 203a that forms a rectangular parallelepiped, and a lid plate 203b that has a peripheral portion coupled to the frame portion 203a and closes the rear end of the frame portion 203a. An inverter circuit board for driving 204, a control circuit board for driving and controlling the panel 200, and a terminal board 205 on which a plurality of terminals to which conductive wires such as cables are connected / disconnected to / from external devices are mounted A processing circuit board 206 for processing an image displayed on the panel 200 and a voltage circuit board 207 for supplying a voltage to the processing circuit board 206 are attached to the lid plate 203b.

The inverter circuit board and the control circuit board are directly attached to the cover plate 203b of the chassis 203, and the terminal board 205, the processing circuit board 206, and the voltage circuit board 207 are mounted side by side on the board support plate 208 made of a single plate, A substrate module 209 is configured. This board module 209 is checked on whether or not electronic components mounted on a board such as the processing circuit board 206 operate normally, and then is mounted on the assembly line of the display device by a carriage line different from the carriage line of the light source device 202. And is attached to the cover plate 203b of the chassis 203 of the light source device 202.
JP 2002-6755 A

  By the way, a thin display device such as a liquid crystal television has a large panel year by year, and the light source device and the substrate module are formed in a large size as the panel size increases.

  However, the cover plate of the chassis of the light source device is formed of a single metal plate such as an aluminum plate or an iron plate, and since this cover plate is formed by a mold, it is used for a relatively large display device. In the light source device to be manufactured, a very large mold for forming the cover plate is required, which increases the cost related to the production efficiency of the cover plate and the cover plate production equipment. The cost and the cost of the light source device will increase, and an improvement measure has been demanded. In addition, when a defect has occurred in a part of the cover plate, it has been difficult to repair the defective portion, and it has been necessary to replace the entire cover plate.

  In addition, since the board support plate of the board module, which becomes larger with the chassis as the panel becomes larger, is formed of a single metal plate, a large mold is required, and the production efficiency and production of the board module are required. Expenses related to the facilities are increased, and the manufacturing cost of the board module and, consequently, the cost of the light source device are increased, and an improvement measure has been demanded.

  In addition, since the substrate module is conveyed on the assembly line of the display device by a conveyance line different from the conveyance line of the light source device, an assembly process of the substrate module is added on the assembly line of the display device, so that the relatively large size. Assembling work of the board module is difficult and improvement measures have been demanded.

  The present invention has been made in view of such circumstances, and a main object thereof is to provide a chassis comprising a plurality of juxtaposed chassis divisions and connecting means for connecting the chassis divisions. A light source device that can improve the productivity of the chassis by attaching a substrate to one of the two, can eliminate the need for an existing substrate support plate, and can reduce the cost of a relatively large light source device There is to do.

  Another object of the present invention is to make the chassis cover plate a structure in which a plurality of plate bodies are juxtaposed in a direction along the surface of the cover plate, and by attaching a substrate to one of the plate bodies, the productivity of the cover plate is achieved. It is an object of the present invention to provide a light source device that can increase the cost of the light source device and can reduce the cost of a relatively large light source device.

  Another object is to provide a light source device that can further reduce the cost of the chassis and increase the rigidity of the chassis by attaching a connecting member that connects to another adjacent plate to one plate. There is to do.

  Another object of the present invention is to reduce the amount of thermal expansion of the cover plate while reducing the weight of the cover plate by making the linear expansion coefficients of the two plates different from each other. An object of the present invention is to provide a light source device that can be hardly generated.

  A light source device according to the present invention includes a chassis in which a plurality of lamps are juxtaposed inside and a substrate attached to the outside of the chassis, wherein the chassis includes a plurality of juxtaposed chassis bodies, And a connecting means for connecting the chassis divisions, wherein the board is attached to one of the chassis divisions.

  In the present invention, since the chassis is formed by a plurality of juxtaposed chassis divisions, the chassis can be molded with a relatively small mold with high productivity, and the cost of the chassis can be reduced. In addition, since one chassis division and substrate constitute a substrate module and an existing substrate support plate is unnecessary, the cost of the light source device can be reduced in combination with the reduction of the cost of the chassis. Further, the operation check inspection of the board can be performed in a relatively small state where the board is attached to one chassis division, and the operation check inspection can be facilitated. Further, even if a defect occurs in a part of the chassis, the chassis can be obtained by replacing only the segment where the defect has occurred, and the yield can be increased.

  The light source device according to the present invention includes a frame portion and a cover plate that closes the open portion of the frame portion, and includes a chassis in which a plurality of lamps are juxtaposed and a substrate attached to the outside of the chassis. In the light source device provided, the cover plate is formed by juxtaposing a plurality of plates in a direction along a surface of the cover plate, and the substrate is attached to one of the plates.

  In this invention, since the cover plate is formed by a plurality of juxtaposed plates, the plate of the cover plate can be molded with a relatively small mold with high productivity. The cost, and hence the chassis cost, can be reduced. In addition, since a single plate body and substrate constitute a substrate module and an existing substrate support plate is unnecessary, the cost of the light source device can be reduced in combination with the reduction in the cost of the chassis. Further, the operation check inspection of the substrate can be performed in a relatively small state where the substrate is attached to one plate body, and the operation check inspection can be facilitated. Moreover, even if a defect occurs in a part of the cover plate, the cover plate can be obtained by replacing only the plate in which the defect has occurred, and the yield can be increased.

  Moreover, the light source device according to the present invention is characterized in that the one plate is attached with a connecting member to be connected to another adjacent plate.

  In this invention, since one plate body, the substrate and the connecting member constitute the substrate module, the connection workability of the plate body can be improved, and the cost of the chassis can be further reduced. The rigidity of the chassis can be increased.

  Further, the light source device according to the present invention is characterized in that the one plate has a coefficient of linear expansion different from that of another adjacent plate.

  In the present invention, the lid plate can be formed of an aluminum plate that has a large linear expansion coefficient but is lightweight, and an iron plate that has a low linear expansion coefficient and high rigidity. In addition, the rigidity of the lid plate can be increased and the thermal expansion amount of the lid plate can be reduced, and the lid plate can be hardly deformed by thermal expansion.

  As described above in detail, according to the present invention, the chassis can be molded with a relatively small mold with high productivity, and the existing substrate support plate is unnecessary, and the cost of the light source device can be reduced. . In addition, the operation check inspection of the board can be performed in a relatively small state where the board is attached to one chassis division, and the operation check inspection can be facilitated. Further, even if a failure occurs in a part of the chassis, the chassis can be obtained by replacing the chassis division in which the failure has occurred, and the yield can be increased.

  Further, according to the present invention, the plate of the cover plate can be molded with a relatively small mold with good productivity, and the existing substrate support plate is unnecessary, and the cost of the light source device can be reduced. . Moreover, the operation check inspection of the substrate can be performed in a relatively small state where the substrate is attached to one plate body, and the operation check inspection can be facilitated. Moreover, even if a defect occurs in a part of the cover plate, the cover plate can be obtained by replacing the plate in which the defect has occurred, and the yield can be increased.

  In addition, according to the present invention, it is possible to improve the connection workability of a plurality of plate bodies, further reduce the cost of the chassis, and increase the rigidity of the chassis.

  Further, according to the present invention, since the linear expansion coefficient of the plate body is made different, the lid plate can be made lighter while increasing the rigidity of the cover plate and the amount of thermal expansion of the cover plate can be reduced. It is possible to make it difficult for the lid plate to bend and deform.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
Embodiment 1
FIG. 1 is a cross-sectional view showing the configuration of a light source device according to the present invention incorporated in a display device, FIG. 2 is an exploded perspective view showing the configuration of the light source device according to the present invention, and FIG. 3 shows the light source device according to the present invention. It is a disassembled perspective view which shows the structure of a board | substrate module.

  The illustrated light source device is mounted on the rear side of the display unit 1 in the thin display device A having the display surface 1a on the front side and including the display unit 1 having a substantially rectangular parallelepiped shape. A chassis-shaped chassis B having a front side opened, a plurality of lamps 4 that are straight tube-shaped and spaced apart from each other in the chassis B, and an inverter circuit that drives the lamps 4 A terminal board 5 on which a plurality of terminals to which conductive wires such as cables are connected / disconnected between the board, a control circuit board for driving and controlling the display unit 1 and external devices are mounted; A processing circuit board 6 for processing an image to be displayed and a voltage circuit board 7 for supplying a voltage to the processing circuit board 6 are provided.

  The chassis B includes a frame portion 2 having a rectangular parallelepiped shape, and a cover plate 3 having a peripheral edge portion coupled to the frame portion 2 and closing the rear end of the frame portion 2. The cover plate 3 is formed by connecting first to third plate bodies 31, 32, 33 arranged along the surface of the cover plate 3 in the longitudinal direction of the lamp 4, and is substantially rectangular corresponding to the frame portion 2. Is formed. The first to third plate bodies 31, 32, 33 are made of aluminum plates, and the terminals facing each other are made uneven 31a, 32a, 33a, and the uneven portions 31a, 32a and the uneven portions 31a, 33a are engaged with each other. Has been.

  The first plate 31 is formed into a substantially rectangular shape having irregularities 31a and 31a at both ends, and the second and third plate bodies 32 and 33 are formed into a substantially rectangular shape having irregularities 32a and 33a at one end. It becomes. A plurality of screw cylinders 31b, 32b, and 33b project from the concave and convex portions 31a, 32a, and 33a of the first to third plate bodies 31, 32, and 33, and the first to third plate bodies 31 are provided. , 32, 33 are provided with a plurality of mounting holes in the terminal portion corresponding to the frame portion 2.

  On one surface (outer surface) of the first plate 31, a plurality of screw cylinders 31 c for supporting the terminal substrate 5, the processing circuit substrate 6, and the voltage circuit substrate 7 are projected, and the second and third plates A plurality of screw cylinders 32 c and 33 c for supporting the inverter circuit board connected to the lamp 4 are provided on the other surface (outer surface) of the other end of the bodies 32 and 33. The screw cylinders 31b, 32b, 33b, 31c, 32c, and 33c have screw holes and flanges, and the insertion holes through which the screw cylinders 31b, 32b, 33b, 31c, 32c, and 33c are inserted are first to third. The plate bodies 31, 32, and 33 are established. The hole of the insertion hole corresponding to the flange is recessed, and the flange is inserted into the recess.

  The terminal board 5, the processing circuit board 6 and the voltage circuit board 7 are provided with through holes corresponding to the screw cylinders 31c of the first plate 31, and male screws inserted into the respective through holes are screw cylinders 31c. The board module C is constituted by the first plate 31 by supporting the screw cylinder 31c at the tip of the screw cylinder 31c. The inverter circuit board is provided with through holes corresponding to the screw cylinders 32c and 33c of the second and third plate bodies 32 and 33, and male screws inserted into the respective through holes are connected to the screw cylinders 32c and 33c. The screw cylinders 32c and 33c are respectively supported at the tips by tightening the screw holes.

  The first to third plate bodies 31, 32, 33 are connected to each other by two connecting members 34, 34 with a slight separation in the juxtaposition direction (longitudinal direction of the cover plate 3). , 32 and a small gap is provided between the first and third plate bodies 31, 33.

  The connecting member 34 also serves as a concealing member for concealing the gap. The connecting member 34 is formed of a strip-shaped plate having a columnar shape such as an iron plate having a plurality of concave and convex strips, and is formed to a length corresponding to the width of the lid plate 3. A plurality of through holes corresponding to the screw cylinders 31b, 32b, and 33b are formed on both sides in the width direction, and the male screws inserted through the respective through holes are fastened to the screw holes of the screw cylinders 31b, 32b, and 33b. Thus, the first plate 31 is attached to both end portions.

  In the chassis B of the light source device configured as described above, the second and third plate bodies 32 and 33 are attached to the frame portion by male screws, and the first plate body 31 constituting the substrate module C is the frame portion. 2 and the other connecting members 34 and 34 attached to the first plate 31 are attached to the second and third plates 32 and 33 by male screws. Constructed in a box shape.

  At this time, the substrate module C is formed by attaching the terminal board 5, the processing circuit board 6 and the voltage circuit board 7 to one first plate body 31 constituting the cover plate 3, and the first plate body 31 is Since it also serves as a substrate support plate, the substrate module C can be assembled on a line different from the assembly line in which the light source device is assembled, and the operation test of the substrate module can be performed in the state of the substrate module C. .

  Further, the lid plate 3 includes a first plate body 31 made of an aluminum plate and second and third plate bodies 32 and 33 made of an aluminum plate connected by connecting members 34 and 34. 3 can be reduced in weight, and the rigidity of the cover plate 3 can be increased. Even with a relatively large light source device, the chassis B can be reduced in weight, and the rigidity of the chassis B can be increased. Moreover, since the clearance gap is provided between the 1st-3rd board bodies 31,32,33 connected by the connection member 34, the unevenness | corrugation 31a of the 1st-3rd board bodies 31,32,33 is provided. , 32a, and 33a are thermally expanded with respect to the screw cylinders 31b, 32b, and 33b, and this thermal expansion can be absorbed by the gap, and the deformation of the lid plate 3 due to the thermal expansion can be hardly generated.

  Incidentally, the amount of thermal expansion in the longitudinal direction of the cover plate 3 formed by connecting the first to third plate bodies 31, 32, 33 by the connecting member 34 and the cover plate made of one aluminum plate, When measured at an initial temperature of 20 ° C., an analysis temperature of 40 ° C., and a temperature difference of 20 ° C., the thermal expansion of the cover plate 3 formed by connecting the first to third plate bodies 31, 32, 33 was 0.687 mm. On the other hand, the thermal expansion amount of the cover plate 3 made of one aluminum plate was 0.701 mm, and the thermal expansion amount could be reduced.

Embodiment 2
FIG. 4 is an exploded perspective view showing another configuration of the chassis of the light source device according to the present invention. In this light source device, instead of the configuration in which the cover plate 3 of the chassis B having the frame portion 2 and the cover plate 3 is formed by a plurality of plate bodies 31, 32, 33 as in the first embodiment, the chassis D It itself is formed by the first to third chassis bodies 8, 9, and 10, and the terminal board 5, the processing circuit board 6 and the voltage circuit board 7 are attached to the first chassis body 8, and the first to third chassis parts are attached. The chassis divisions 8, 9, and 10 are connected by two connecting members 34 and 34.

  The chassis D has a substantially rectangular shape, and is formed from two edges of the first to third plate portions 81, 91, 101 juxtaposed in the longitudinal direction of the lamp 4 and the first plate portion 81 arranged in the center. The first chassis divided body 8 having two bent pieces 82 bent to the inner side, and the three bent from the three edges of the second and third plate portions 91 and 101 arranged on both sides to the inner side. The second and third chassis segments 9 and 10 having the bent pieces 92 and 102, and the first and second chassis segments 8, 8, and 10 so that the bent pieces 82, 92 and 102 form a frame shape. The chassis divisions 8 and 9 and the first and third chassis divisions 8 and 10 are connected to each other.

  The first to third chassis divisions 8, 9, and 10 are made of an integrally formed aluminum plate, and the ends of the plate portions 81, 91, and 101 that face each other are formed as irregularities 83, 93, and 103. , 93 and projections and depressions 83, 103 are configured to mesh with each other. A plurality of pin holes are formed in the uneven portions 83, 93, and 103 of the first to third chassis divisions 8, 9, and 10.

  A plurality of screw cylinders 84 for supporting the terminal board 5, the processing circuit board 6, and the voltage circuit board 7 protrude from the plate portion 81 of the first chassis body 8, and are provided at the tips of the screw cylinders 84. The terminal board 5, the processing circuit board 6 and the voltage circuit board 7 are supported, and the board module E is constituted by the first chassis division 8.

  The first to third chassis segments 8, 9, and 10 are slightly separated in the juxtaposition direction (longitudinal direction of the chassis D), and the plate portions 81, 91, and 101 are coupled by the two coupling members 34 and 34. A slight gap is provided between the opposing terminals of the first and second chassis segments 8 and 9 and between the opposing terminals of the first and third chassis segments 8 and 10.

  The connecting member 34 also serves as a concealing member for concealing the gap, and is composed of a strip-like plate having a columnar shape such as an iron plate having a plurality of irregularities, and is formed to a length corresponding to the width of the chassis D. In addition, a plurality of pin holes corresponding to the pin holes are formed on both sides in the width direction, and the pin holes of the first to third plate portions 81, 91, 101 from the pin holes of the connecting members 34, 34. The first to third chassis segments 8, 9, and 10 are connected to each other by inserting non-aluminum pins.

Since the chassis D of the light source device configured as described above is connected to the first chassis segment 8 made of an aluminum plate and the second and third chassis segments 9 and 10 made of an aluminum plate. Even in the case of a relatively large light source device, the chassis D can be reduced in weight and the rigidity of the chassis D can be increased. Moreover, since the clearance gap is provided between the 1st-3rd chassis divisions 8, 9, 10 connected by the connection member 34 and a pin, the 1st-3rd chassis divisions 8, 9, The ten irregularities 83, 93, and 103 are thermally expanded with respect to the pins, and this thermal expansion can be absorbed by the gap, so that it is difficult for the chassis D to bend and deform due to thermal expansion.
Other configurations and operations are the same as those of the first embodiment shown in FIGS.

  The lid plate 3 of the embodiment described above has a configuration in which the first to third plate bodies 31, 32, and 33 made of aluminum are juxtaposed, but in addition, a plurality of different linear expansion coefficients. It is good also as a structure formed by connecting the plate bodies. For example, the first plate 31 may be made of an iron plate having a linear expansion coefficient of 1.2 × 10 −5, and the second and third plate bodies 32 and 33 may be made of aluminum having a linear expansion coefficient of 2.3 × 10 −5. The at least one of the third plate bodies 31, 32, 33 may be made of aluminum, and in this case as well, the lid plate 3 can be made lighter than the iron plate lid plate, and the rigidity of the lid plate 3 is increased. The chassis B can be made light even with a relatively large light source device. Further, since the lid plate 3 is formed by connecting plate bodies 31, 32, and 33 having different linear expansion coefficients, the thermal expansion amount of the lid plate 3 can be reduced by a plate body having a small linear expansion coefficient, and the lid plate 3 due to thermal expansion. It is possible to prevent the occurrence of flexural deformation. The first to third plate bodies 31, 32, 33 may be metal plates such as iron plates. The cover plate 3 configured in this way is connected by a connecting member 34 in the same manner as the cover plate 3 shown in the figure.

  Moreover, although the chassis D of the embodiment described above is configured by juxtaposing the first to third chassis divisions 8, 9, and 10 made of aluminum, a plurality of chassis having different linear expansion coefficients are also provided. It is good also as a structure formed by connecting the split bodies 8, 9, and 10. For example, the first chassis segment 8 may be made of an iron plate having a linear expansion coefficient of 1.2 × 10 −5, and the second and third chassis segments 9 and 10 may be made of aluminum having a linear expansion coefficient of 2.3 × 10 −5, It is sufficient that at least one of the first to third chassis divisions 8, 9, and 10 is made of aluminum. In this case as well, the weight can be reduced as compared to the chassis made of iron plate, and the rigidity can be increased. Even for a large light source device, the chassis D can be lightened. Further, since the chassis D is formed by connecting the chassis divisions 8, 9, and 10 having different linear expansion coefficients, the chassis divisions 8, 9, and 10 having a low linear expansion coefficient can reduce the thermal expansion amount of the chassis D, It is possible to make it difficult for the chassis D to bend and deform due to expansion. The first to third chassis divisions 8, 9, and 10 may be metal plates such as iron plates. The chassis configured in this manner is connected by a connecting member 34 in the same manner as the chassis shown in the figure.

  In the embodiment described above, the lid plate 3 is formed by connecting the first to third plate bodies 31, 32, and 33 by the connecting member 34, but the connecting member 34 is eliminated, It is good also as a structure which attaches the 1st-3rd board 31, 32, 33 to the frame part 2, and it is good also as a 1st and 3rd board between the 1st and 2nd board 31 and 32 which adjoins. Between the bodies 31 and 33, it is good also as a structure which arrange | positions the reinforcing member which attaches the both ends to a frame part and blocks | prevents bending of each plate body 31,32,33.

  Moreover, although it was set as the structure provided with the cover plate 3 which connects the 3 plate bodies 31,32,33 in embodiment described above, the cover plate 3 has two plate bodies or 4 or more sheets. It is good also as a structure formed by connecting plate bodies. Moreover, although the terminal with which plate body 31,32,33 opposes mutually was made into unevenness 31a, 32a, 33a, it is good also as a linear terminal, without making unevenness 31a, 32a, 33a.

  Moreover, although the cover plate 3 is configured to have a gap between the terminals where the plate bodies 31, 32, and 33 are opposed to each other, the lid plate 3 may be configured such that there is no gap and the terminals facing each other are in contact with each other.

  In the embodiment described above, the chassis D is formed by connecting the three chassis divisions 8, 9, and 10. In addition, the chassis D has two chassis divisions 9, 10 or four or more. The chassis divisions (chassis divisions 9 and 10 and two or more chassis divisions 8) may be connected. Moreover, although the terminal where the chassis divisions 8, 9, and 10 are opposed to each other is the uneven parts 83, 93, and 103, it may be a linear terminal without using the uneven parts 83, 93, and 103.

  In addition, the chassis D is configured to have a gap between the terminals where the chassis divisions 8, 9, and 10 are opposed to each other. However, the chassis D may be configured such that there is no gap and the terminals facing each other are in contact with each other.

  The chassis D formed by juxtaposing a plurality of chassis divisions 8, 9, and 10 connects the plate portions 81, 91, and 101 of the adjacent chassis divisions 8, 9, and 10 with a connecting member, and is a bent piece 82. , 92 and 102 may be connected to each other by other connecting members.

  As a means for connecting the first to third plate bodies 31, 32, 33, the screw cylinders 31b, 32b, 33b are projected from the first to third plate bodies 31, 32, 33, but in addition, the screw cylinder 31b. , 32b, 33b are removed, and the first to third plate bodies 31, 32, 33 are provided with protrusions that are formed into a substantially L-shape by cutting and raising and have screw holes. The circuit board 6 and the voltage circuit board 7 may be supported, and the terminal board 5, the processing circuit board 6, and the voltage circuit board 7 may be attached by male screws that are fastened to the screw holes of the protrusions.

It is sectional drawing which shows the structure of the light source device which concerns on this invention incorporated in the display apparatus. It is a disassembled perspective view which shows the structure of the light source device which concerns on this invention. It is a disassembled perspective view which shows the structure of the board | substrate module of the light source device which concerns on this invention. It is a disassembled perspective view which shows the other structure of the chassis of the light source device which concerns on this invention. It is sectional drawing which shows the structure of the conventional display apparatus provided with a light source device. It is a disassembled perspective view which shows the structure of the conventional light source device. It is a disassembled perspective view which shows the structure of the board | substrate module of the conventional light source device.

Explanation of symbols

B, D Chassis 2 Frame portion 3 Cover plate 31 First plate body 32 Second plate body 33 Third plate body 31a, 32a, 33a Concavity and convexity 34 Connection member (connection means)
4 lamp 5 terminal board (board)
6 processing circuit board (substrate)
7 Voltage circuit board (board)
8 First chassis division 9 Second chassis division 10 Third chassis division

Claims (4)

  In a light source device comprising a chassis in which a plurality of lamps are juxtaposed inside and a substrate attached to the outside of the chassis, the chassis includes a plurality of juxtaposed chassis segments and the chassis segments coupled to each other. A light source device comprising: a connecting means; and the substrate is attached to one of the chassis divisions.   In a light source device having a frame and a cover plate that closes an open portion of the frame, and a chassis in which a plurality of lamps are juxtaposed, and a substrate attached to the outside of the chassis, the cover plate includes: A light source device comprising a plurality of plates arranged in parallel in a direction along the surface of the lid plate, and the substrate attached to one of the plates.   The light source device according to claim 2, wherein the one plate is attached with a connecting member that is connected to another adjacent plate.   The light source device according to claim 2, wherein the one plate body has a linear expansion coefficient different from that of another adjacent plate body.

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