JP2008218090A - Backlight device and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a clip for locking a lamp holder for holding a fluorescence tube by a surface side with a plate to be mounted from contacting with another member, and also to prevent unlocking and breakage and the like of the clip due to contact, in a backlight device. <P>SOLUTION: In the backlight device, the clip for fixation provided on a back surface of the lamp holder for detachably holding the fluorescence tube is inserted into and locked with a mounting hole bored in the plate to be mounted which includes a reflecting part on its top surface side. A protrusion for preventing the lamp holder to be inserted into and locked with the mounting hole from contacting with the clip is provided around the mounting hole in a backside of the plate to be mounted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a backlight device and a display device, and more specifically, to a clip of a lamp holder that holds a fluorescent tube of a backlight device used as a light source of the display device and is locked to a mounted plate on the rear surface side. This prevents other members from coming into contact with each other.

  Conventionally, in a backlight device using a fluorescent tube as a light source, a structure in which an intermediate portion in the length direction of the fluorescent tube is held by a lamp holder in order to compensate for the mechanical strength of the fluorescent tube that is long and thin. It has been. For example, in Japanese Patent Application Laid-Open No. 2006-156408 (Patent Document 1), as shown in FIGS. 7 and 8, a holding portion 1 b that holds a fluorescent tube 2 protrudes on the surface side of the substrate portion 1 a of the lamp holder 1. In addition, the lamp holder 1 is provided by projecting a clip 1c on the back side of the substrate portion 1a and inserting and locking the clip 1c into the mounting hole 4a of the metal plate (shield plate) 4 on which the reflecting plate 3 is laid. A backlight device 5 fixed to the metal plate 4 is disclosed. The fluorescent tube 2 is held by the holding portion 1b of the lamp holder 1 fixed to the metal plate 4, and a metal plate attachment member 6 is attached to the back side of the metal plate 4, and a unit substrate 7 is further provided on the back side. It is attached.

  However, since the clip 1c inserted and locked in the mounting hole 4a of the metal plate 4 protrudes to the back side of the metal plate 4, the transport process of the backlight device 5 and the assembly process of the display panel In such a case, there is a problem that other members such as jigs come into contact with the protruding clip 1c and the clip 1c is easily unlocked or the clip 1c is easily damaged. In particular, since the side of the space sandwiched between the metal plate 4 and the member 6 on the back side is open, there is a problem that other members can easily come into contact with the protruding clip 2c from the side.

  On the other hand, when the reflecting plate 3 laid on the metal plate 4 is replaced, it is necessary to first remove the lamp holder 1 from the metal plate 4, so that the removal work from the metal plate 4 is facilitated. For example, as shown in FIG. 9, one clip 1c-2 of two clips 1c-1 and 1c-2 is used as a blade-shaped locking piece, while the other clip 1c-1 is an L-shaped hook. May be a piece. That is, when the lamp holder 1 is attached to the metal plate 4, first, an L-shaped hook piece is inserted into the attachment hole 4a-1, the lamp holder 1 is slid in the direction of the arrow, and then the blade-like locking piece is attached. The clips 1c-1 and 1c-2 are completely locked only by being inserted and locked into the mounting hole 4a-2. On the other hand, when detaching the lamp holder 1 from the metal plate 4, first, the blade-like locking piece is pushed into the mounting hole 4a-2 while being compressed, the clip 1c-2 is unlocked, and then the lamp holder 1 is removed. The latch of the clip 1c-1 of the L-shaped hook piece can be easily removed simply by sliding in the direction opposite to the arrow.

  However, when the clip 1c-1, 1c-2 of the lamp holder 1 is structured so as to be easily removable as described above, the clip 1c can be obtained by contacting other members with the clip 1c-1, 1c-2 in the locked state. -1, 1c-2 has a problem that it becomes easier to release the lock.

  In addition, in the appearance inspection and lighting inspection after assembling the display panel to the backlight device 5, each of the assembled members is found when a malfunction such as the disengagement of the clips 1 c-1 and 1 c-2 is found. After disassembling and fixing the problem, it is necessary to reassemble it, and there is a problem that workability becomes very poor.

JP 2006-156408 A

  The present invention has been made in view of the above problems, and other members are in contact with a clip of a lamp holder that holds a fluorescent tube of a backlight device and is locked to a mounting plate made of a metal plate or the like on the rear surface side. It is an object of the present invention to prevent the clip from being disengaged or broken due to contact.

In order to solve the above-mentioned problems, the first invention is for fixing provided on the back surface of a lamp holder for detachably holding a fluorescent tube in a mounting hole formed in a mounting plate having a reflection portion on the front surface side. A backlight device in which the clip of the above is inserted and locked,
A backlight for projecting a protrusion for preventing contact with the clip of the lamp holder inserted and locked in the mounting hole around the mounting hole on the back side of the mounted plate The device is provided.

  The mounted plate is made of a metal plate having a reflecting member laid on the surface side or a metal plate (so-called shield plate) having a surface subjected to reflection treatment.

According to the said structure, the said convex part which protruded around the attachment hole by the side of the back surface of the to-be-attached board which consists of the said metal plate etc. played the role of a bank, and was inserted and latched by the attachment hole, and the back side of the to-be-attached board It is possible to prevent the other member from coming into contact with the clip of the lamp holder protruding to the side, and in particular, it is possible to effectively prevent the contact of the other member from the side. Therefore, it is possible to prevent the clip from being unlocked or the clip from being damaged due to the contact of other members. Thus, after the display panel is assembled to the backlight device, each member is disassembled to lock the clip. Since there is no need to redo, workability can be greatly improved.
Further, by providing the convex portion on the mounting plate, the convex portion can be a rib to increase the mechanical strength of the mounting plate.
In addition, it is preferable to provide the said convex part protruding around the attachment hole of the back surface side of a to-be-attached board as close as possible to the said attachment hole within the range which does not become an obstacle of the insertion locking of a clip.

It is preferable that the protruding amount of the protrusion protruding from the mounted plate is larger than the protruding amount of the clip from the mounted plate.
As described above, by making the protrusion amount of the protrusion larger than the protrusion amount of the clip from the mounting plate, the protrusion protruding around the mounting hole can protect the clip more reliably. In addition, as a protrusion amount of a convex part, about 1.0 to 1.5 times the protrusion amount from the to-be-mounted board of a clip is preferable.
The shape of the convex portion is not particularly limited as long as it can prevent the contact of other members with the clip, and examples thereof include various shapes such as a hemispherical shape and a conical shape. Moreover, you may make it the convex part shape which continued the predetermined length along the to-be-mounted board.

The lamp holder is provided with a holding portion for detachably holding the fluorescent tube on the surface of the substrate portion, and a plurality of clips are provided at intervals on the back surface of the substrate portion,
The first clip of the clips is an L-shaped hook piece, and the other clip has a shape in which a locking step portion of a pair of blade-shaped locking pieces is locked to the periphery of the mounting hole of the mounted plate. And
It is preferable that the convex part of the to-be-attached board is provided in the position facing the front-end | tip of the said hook piece latched by the back surface of the said attachment hole.

As described above, among the plurality of clips provided at intervals on the back surface of the substrate portion, the first clip is an L-shaped hook piece, so that the reflecting member laid on the mounting plate can be replaced. Therefore, it is possible to easily remove the lamp holder from the mounting plate, which is necessary.
In addition, by making the shape of the other clip into a shape in which the locking stepped portion of the pair of blade-shaped locking pieces is locked to the periphery of the mounting hole of the mounting plate, the lamp holder can be attached to the mounting plate in a stable state. Can be fixed.

As described above, when the first clip is an L-shaped hook piece and the other clip is a blade-like locking piece, first, the hook piece of the first clip is inserted into the mounting hole of the mounting plate. Then, after the hook piece is locked to the back surface of the mounting hole by sliding, the blade-like locking piece of another clip is inserted into the corresponding mounting hole and locked to the periphery of the mounting hole. it can. Therefore, when the lamp holder is locked, there is a mounting hole on the opposite side (rear end side) to the front end side of the hook piece, and the front end of the hook piece is pressed toward the rear end side. There is a risk that the hook piece can easily come out of the mounting hole and be unlocked.
Therefore, as described above, by providing the convex portion of the mounting plate at a position facing the tip of the hook piece locked to the back surface of the mounting hole, the other member comes into contact with the tip of the hook piece and the hook It is possible to prevent the piece from being pressed toward the rear end side, and to effectively prevent the hook piece from being released due to contact.

  Although the number of clips varies depending on the size of the lamp holder, it is not particularly limited. For example, the number of clips is preferably composed of two clips: the first clip and the second clip having the blade-like locking piece.

  By comprising the first clip and the second clip, the lamp holder can be fixed to the mounting plate in a stable state, and the lamp holder can be attached to the mounting plate relatively easily.

  In addition, mounting holes into which the first and second clips are inserted and locked are formed in the mounting plate with a space therebetween, and the convex portion protrudes on the opposite side of each mounting hole. It is preferable to be provided.

  As described above, by projecting the convex portion on the opposite side of each mounting hole, not only the first clip but also the contact of other members from the direction in which the second clip is easily released can be prevented. Can be prevented.

  Further, in place of the above-described configuration, the convex portion may be provided on the back surface of the mounted plate so as to surround each mounting hole, or the convex portion may be provided so as to surround a pair of mounting holes. Good.

  As described above, by projecting the protruding portions so as to surround each mounting hole or the pair of mounting holes, it is possible to prevent the clip from being contacted not only in one direction but also in various directions.

  Moreover, it is preferable that the holding | maintenance part of the said fluorescent tube consists of a semi-circular elastic piece.

  As described above, by forming the fluorescent tube holding portion from a semi-circular elastic piece, the fluorescent tube can be easily attached and detached, and the fluorescent tube can be stably held without applying a strong load to the fluorescent tube.

  The lamp holder is formed integrally with the clip portion protruding from the back surface of the substrate portion and the holding portion of the fluorescent tube protruding from the front surface. The clip portion and the fluorescent tube holding portion are front and back. It is preferable to be provided at the facing position.

  As described above, the lamp holder is integrally formed to facilitate the attachment and removal of the lamp holder, and the lamp holding the fluorescent tube by providing the clip portion and the fluorescent tube holding portion at the front and back facing positions. The holder can be fixed to the mounting plate in a horizontal state without wobbling. Thereby, it is possible to prevent the fluorescent tube from being displaced which causes uneven luminance on the display surface.

  On the other hand, the lamp holder is not integrally formed as described above, the holding portion of the fluorescent tube is provided at one end of the shaft portion, the locking portion is provided at the other end, and in the middle of the shaft portion. It is good also as a structure provided with the clip material from which the flange part protruded, the said clip material being inserted in the insertion hole drilled in the said board | substrate part, and latching and attaching the said flange part to the surface of a board | substrate part. .

  It is preferable that a spacer protrusion for supporting the rear surface of the diffusion plate disposed on the front surface side of the fluorescent tube is provided on the substrate portion on the arrangement side of the holding portion of the fluorescent tube.

As described above, by providing the spacer projection on the side of the substrate portion where the fluorescent tube holding portion is disposed, the spacing between the reflecting member and the fluorescent tube and the diffusion plate is kept constant, and uneven brightness on the display surface is prevented. be able to.
Further, in order to make the shadow of the spacer projection projected onto the diffusion plate as small as possible, the spacer projection may have a sharp acute shape in cross-sectional view, and the diffusion plate and the spacer projection may be brought into point contact. preferable.

The lamp holder is preferably formed of a transparent or white flexible resin material. As the material, for example, polycarbonate or the like can be used. By forming the lamp holder from a transparent or white resin material, it is possible to prevent uneven brightness and lower brightness on the display surface due to the shadow of the lamp holder.
The number of lamp holders arranged in the length direction of the fluorescent tube varies depending on the length and diameter of the fluorescent tube, but usually two or three lamp holders are arranged at predetermined intervals in the middle portion of the fluorescent tube in the length direction. It is preferred that

  Examples of the material of the mounting plate include a metal plate made of iron, aluminum, or the like. Further, as the reflecting member laid on the surface side of the mounted plate, for example, a reflecting sheet or a reflecting plate made of a white resin such as polycarbonate can be used, and further, instead of laying the reflecting member on the mounted plate It is also possible to perform a reflection process such as applying a white paint to the surface of the mounted plate.

  The second invention provides a display device comprising the backlight device of the first invention and a display panel.

  In the backlight device, when the clip of the lamp holder is disengaged, the fluorescent tube held by the lamp holder is also displaced, resulting in a problem such as uneven brightness on the display panel of the display device. . According to the backlight device of the first aspect of the present invention, the clip of the lamp holder is prevented from being disengaged, so that the above-described problems do not occur on the display panel in the display device, and high-quality display is achieved. Can be performed.

A liquid crystal panel can be suitably used as the display panel.
In addition to the liquid crystal panel, the present invention can be applied to a display panel that is illuminated with a backlight from the back.

As described above, according to the backlight device of the first aspect of the present invention, by projecting a convex portion around the mounting hole on the back side of the mounted plate, the convex portion serves as a bank, and the mounting hole It is possible to prevent the other member from coming into contact with the clip of the lamp holder that is inserted and locked to the rear surface of the mounted plate, and in particular, the contact of the other member from the side can be effectively prevented. Therefore, it is possible to prevent clip disengagement due to contact with other members, damage to the clip, etc., so that after the display panel is assembled to the backlight device, each member is disassembled to lock the clip. This eliminates the need to redo, so that workability can be greatly improved.
Further, by providing the convex portion on the mounting plate, the convex portion becomes a rib and the mechanical strength of the mounting plate made of a metal plate or the like can be increased.

  Further, according to the display device of the second invention provided with the backlight device of the first invention, disengagement of the clip of the lamp holder is prevented in the backlight device, and the fluorescent tube is also predetermined without being displaced. Since the position is stably held, high-quality display can be performed on the display panel of the display device without causing problems such as uneven brightness.

Embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment of the present invention.
In the backlight device 10, a lamp holder 11 is attached to a mounting plate made of a metal plate 14 having a reflection sheet 13 laid on the front surface side, and a fluorescent tube 12 arranged in parallel on the front side of the reflection sheet 13 is detachably held. is doing.

  Specifically, holding portions 11b-1 and 11b-2 made of a semi-circular elastic piece and detachably holding the fluorescent tube 12 are projected on the surface of the substrate portion 11a of the lamp holder 11 with a required interval. Has been established. A first clip 11c-1 and a second clip 11c-2 for fixing the metal plate are provided so as to protrude from the back surface of the substrate portion 11a at positions facing the holding portions 11b-1 and 11b-2, respectively. The shape of the first and second clips is such that the first clip 11c-1 is an L-shaped hook piece and the second clip 11c-2 is a blade-like locking piece.

Further, the rear surface of the diffusion plate 15 disposed on the front side of the fluorescent tube 12 is supported on the surface of the substrate portion 11a of the lamp holder 11 from the central portion sandwiched between the holding portions 11b-1 and 11b-2. A spacer projection 11d is provided. The spacer projection 11d has a sharp acute shape in cross section.
The lamp holder 11 including the substrate portion 11a, the holding portions 11b-1, 11b-2, the first clip 11c-1, the second clip 11c-2, and the spacer projection 11d is integrally formed using polycarbonate resin.
As shown in FIG. 1, a lamp holder 11 capable of simultaneously holding two fluorescent tubes 12 arranged in parallel by the holding portions 11b-1 and 11b-2 is provided at a predetermined interval in the middle portion of the fluorescent tube 12 in the longitudinal direction. The lamp holders 11 are arranged in a zigzag pattern at two locations with a gap.

  On the other hand, in order to attach the lamp holder 11 to the metal plate 14, the metal plate 14 has attachment holes 14c-1, in which the first clip 11c-1 and the second clip 11c-2 of the lamp holder 11 are inserted and locked, respectively. 14c-2 is drilled at a predetermined interval and communicated with the mounting holes 13c-1 and 13c-2 of the reflection sheet 13.

  The lamp holder 11 is fixed to the metal plate 14 by first inserting the L-shaped hook piece of the first clip 11c-1 into the mounting hole 14c-1 of the metal plate 14 and sliding the lamp holder 11 in the direction of arrow A. After the hook piece is locked to the back surface of the mounting hole 14c-1, the second clip 11c-2 is inserted into the mounting hole 14c-2, and the locking step portion 11c- of the pair of locking blade portions 11c-20 is inserted. 200 is performed in the order of engaging with the peripheral edge of the mounting hole 14c-2.

  The metal plate 14 has protrusions 14a-1 for preventing contact with clips on the opposite side of the mounting holes 14c-1 and 14c-2 around the mounting holes 14c-1 and 14c-2. 14a-2 is projected by bending. One convex part 14a-1 is provided in the position facing the front-end | tip 11c-10 of the hook piece of the 1st clip 11c-1 latched by the back surface of the attachment hole 14c-1. The shape of the convex portions 14a-1 and 14a-2 is substantially hemispherical, and the protruding amount of the convex portions 14a-1 and 14a-2 is from the metal plate 14 of the first clip 11c-1 and the second clip 11c-2. The protrusion amount is about 1.5 times larger than the protrusion amount of the clips 11c-1 and 11c-2. The convex portions 14a-1 and 14a-2 are the end portions of the substrate portion 11a of the lamp holder 11 that do not hinder the insertion and locking of the clips 11c-1 and 11c-2 into the mounting holes 14c-1 and 14c-2. Located in the vicinity.

  The metal plate 14 is made of iron, and the reflective sheet 13 laid on the metal plate 14 is made of polycarbonate.

Hereinafter, the assembly of the backlight device 10 and the liquid crystal display device 20 will be described with reference to FIG.
First, the first clip 11c-1 and the second clip 11c-2 are inserted and locked in the mounting holes 14c-1 and 14c-2 of the metal plate 14 on which the reflection sheet 13 is laid, whereby each lamp holder 11 is made of metal. After fixing the plate 14 at a predetermined position, the fluorescent tube 12 is inserted into the holding portions 11b-1 and 11b-2 of the lamp holders 11 and held.
In FIG. 4, only one lamp holder 11 and eight fluorescent tubes 12 are shown. Actually, however, 14 lamp holders 11 are arranged in a staggered manner as shown in FIG. 12 is detachably held.

Next, the diffusion plate 15 disposed on the front surface side of the fluorescent tube 12 is placed on the spacer projection 11d of each lamp holder 11, and the back plate 16 is disposed on the rear surface side of the metal plate 14, thereby the backlight device. 10 is assembled.
In the liquid crystal display device assembling process, the liquid crystal panel 21 is arranged on the front side of the backlight device 10 and assembled to form the liquid crystal display device 20.

As described above, by projecting the convex portions 14a-1 and 14a-2 around the mounting holes 14c-1 and 14c-2 on the back surface side of the metal plate 14, the convex portions 14a-1 and 14a-2 are formed. The clip of the lamp holder 11 (the first clip 11c-1 and the second clip 11c-2) that plays the role of the bank and is inserted and locked in the mounting holes 14c-1 and 14c-2 and protrudes from the back surface side of the metal plate 14 The contact of other members can be prevented, and the contact of the other members from the side can be effectively prevented. Therefore, it is possible to prevent the clips 11c-1 and 11c-2 from being disengaged and the clips 11c-1 and 11c-2 from being damaged due to the contact of other members, whereby the liquid crystal panel 21 is attached to the backlight device 10. Since it is not necessary to disassemble each member and re-engage the clips 11c-1 and 11c-2 after assembly, workability can be greatly improved.
In particular, the protruding portions 14a-1 and 14a-2 are clipped by making the protruding amounts of the protruding portions 14a-1 and 14a-2 larger than the protruding amounts of the clips 11c-1 and 11c-2 from the metal plate 14. 11c-1 and 11c-2 can be more reliably protected.
Further, by providing the convex portions 14 a-1 and 14 a-2 on the metal plate 14, the convex portions 14 a-1 and 14 a-2 can be ribs to increase the mechanical strength of the metal plate 14.

  Further, as described above, the first clip 11c-1 is an L-shaped hook piece, and the second clip 11c-2 is a blade-like locking piece, so that the lamp holder 11 can be easily detached from the metal plate 14. Therefore, the first clip 11c-1 and the second clip 11c-2 are brought into contact with each other from the opposite direction of the mounting holes 14c-1 and 14c-2. The lock is easily released. Therefore, as described above, the convex portions 14a-1 and 14a-2 are provided on the opposite side of the mounting holes 14c-1 and 14c-2, and the convex portion 14a-1 is engaged with the back surface of the mounting hole 14c-1. By making it face the tip 11c-10 of the hook piece of the first clip 11c-1 to be stopped, it is possible to effectively prevent contact of other members from the direction in which the locking of the first clip and the second clip is easily released. be able to.

  Further, as described above, in the backlight device 10, the clips 11c-1 and 11c-2 of the lamp holder 11 are prevented from being disengaged, and the fluorescent tube 12 is also stably held at a predetermined position without being displaced. High-quality display can be performed on the liquid crystal display panel 21 of the liquid crystal display device 20 without causing defects such as uneven brightness.

FIG. 5 shows a second embodiment.
In the second embodiment, convex portions 14 a-1, 14 a-2, 14 a-3, 14 a-4, and 14 a-5 are provided at positions surrounding the pair of mounting holes 14 c-1 and 14 c-2 on the back surface side of the metal plate 14. 14a-6 is the same as in the first embodiment except that the protrusions 14a-6 are provided. That is, the convex portions 14a-1, 14a-2, 14a-3, 14a-4, 14a-5, and 14a-6 are provided on the back surface side of the metal plate 14 at the position indicated by the dotted circle in FIG.

  In the second embodiment, the same effect as that of the first embodiment can be obtained. In particular, as described above, the convex portions 14a-1 and 14a-2 are located at positions surrounding the pair of mounting holes 14c-1 and 14c-2. 14a-3, 14a-4, 14a-5, and 14a-6, the contact of other members to the clips 11c-1 and 11c-2 from various directions can be prevented.

In the first and second embodiments, the integrally formed lamp holder 11 is used. However, as shown in FIG. 6, a clip member 32 is provided separately from the substrate portion 33, and the clip member 32 is provided on the substrate portion 33. Alternatively, the lamp holder 31 may be assembled with 32.
The clip member 32 has a holding portion 32b of the fluorescent tube 12 at one end of a shaft portion 32a, a locking portion 32c at the other end, and a disc-shaped flange portion 32d in the middle of the shaft portion 32a. Is protruding. On the other hand, an insertion hole 33 a for inserting the clip material 32 is formed in the substrate portion 33. The clip member 32 is inserted into the insertion hole 33 a of the substrate portion 33 from the locking portion 32 c side, and the flange portion 32 d is locked to the surface of the substrate portion 33.

It is a schematic plan view which shows the state in which the lamp holder is holding the fluorescent tube in 1st Embodiment of this invention. It is a schematic perspective view which shows the state in which the lamp holder is holding the fluorescent tube. (A) is a schematic sectional view showing a state in which one lamp holder holds a fluorescent tube, and (B) is an enlarged view of a main part showing a locking state of a blade-like locking piece. It is a schematic exploded view of a liquid crystal display device. It is a figure which shows the protrusion position of the convex part in 2nd Embodiment of this invention. The another example of a lamp holder is shown, (A) is before a clip material insertion, (B) is a schematic perspective view which shows the state after clip material insertion. It is a figure which shows a prior art example. It is a figure which shows a prior art example. It is a figure which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Backlight apparatus 11 Lamp holder 11a Board | substrate part 11b-1, 11b-2 Holding part 11c-1 1st clip 11c-10 Hook piece front-end | tip 11c-2 2nd clip 11c-20 Blade-like locking piece 11c-200 Locking Step 11d Spacer projection 12 Fluorescent tube 13 Reflective sheet 14 Metal plate 14a-1, 14a-2, 14a-3, 14a-4, 14a-5, 14a-6 Protrusion 14c-1, 14c-2 Mounting hole 15 Diffusion plate 16 Back plate 20 Liquid crystal display device 21 Liquid crystal panel

Claims (13)

This is a backlight device in which a fixing clip provided on the back surface of a lamp holder for detachably holding a fluorescent tube is inserted and locked in a mounting hole formed in a mounted plate having a reflection portion on the front surface side. And
A backlight for projecting a protrusion for preventing contact with the clip of the lamp holder inserted and locked in the mounting hole around the mounting hole on the back side of the mounted plate apparatus.   2. The backlight device according to claim 1, wherein the mounted plate is made of a metal plate in which a reflection member is laid on the front surface side or a metal plate on which the surface is subjected to reflection treatment.   3. The backlight device according to claim 1, wherein a protruding amount of the protruding portion protruding from the mounted plate is larger than a protruding amount of the clip from the mounted plate. The lamp holder is provided with a holding portion for detachably holding the fluorescent tube on the surface of the substrate portion, and a plurality of clips are provided at intervals on the back surface of the substrate portion,
The first clip of the clips is an L-shaped hook piece, and the other clip has a shape in which a locking step portion of a pair of blade-shaped locking pieces is locked to the periphery of the mounting hole of the mounted plate. And
4. The backlight according to claim 1, wherein the convex portion of the mounting plate is provided at a position facing the tip of the hook piece that is locked to the back surface of the mounting hole. 5. apparatus.   5. The backlight device according to claim 4, wherein the clip includes two clips, the first clip and a second clip having the blade-like locking piece.   The mounting holes into which the first and second clips are inserted and locked are formed at intervals in the mounting plate, and the convex portions are provided on the opposite side of the mounting holes. The backlight device according to claim 5. On the back surface of the mounted plate, the convex portion is provided so as to surround each mounting hole,
Or the backlight apparatus of any one of Claim 1 thru | or 5 with which the said convex part protrudes surrounding a pair of attachment hole.   The backlight device according to any one of claims 1 to 7, wherein the fluorescent tube holding portion is formed of a semi-circular elastic piece.   The lamp holder is formed integrally with the clip portion protruding from the back surface of the substrate portion and the holding portion of the fluorescent tube protruding from the front surface. The clip portion and the fluorescent tube holding portion are front and back. The backlight device according to claim 4, wherein the backlight device is provided at a facing position. A holding portion for the fluorescent tube is provided at one end of the shaft portion, the locking portion is provided at the other end, and a clip member with a flange portion protruding in the middle of the shaft portion is provided,
9. The clip material according to claim 4, wherein the clip member is inserted into an insertion hole formed in the substrate portion, and the flange portion is fixedly attached to a surface of the substrate portion. Backlight device.   The spacer projection for supporting the rear surface of the diffusion plate disposed on the front surface side of the fluorescent tube is provided on the substrate portion on the side where the holding portion of the fluorescent tube is disposed. The backlight device according to item 1.   A display device comprising the backlight device according to any one of claims 1 to 11 and a display panel.   The display device according to claim 12, wherein the display panel is a liquid crystal panel.

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