JP4397881B2 - Fluorescent tube holder, fluorescent tube holding mechanism, liquid crystal display device - Google Patents

Description

  The present invention relates to a fluorescent tube holder that holds a fluorescent tube attached to a predetermined substrate, a fluorescent tube holding mechanism that includes the fluorescent tube holder, and a liquid crystal display device that includes the fluorescent tube holding mechanism. It is.

In general, in a liquid crystal display device, a fluorescent tube is used as a backlight (back illumination means) of a liquid crystal display unit (liquid crystal panel). The fluorescent tube is normally held by a fluorescent tube holder (also referred to as a fluorescent tube holder or a lamp clip) attached to a predetermined base material such as a metal casing disposed on the back side of the liquid crystal display unit. .
Here, as a conventional attachment mechanism with respect to the base material of the fluorescent tube holder, there is, for example, a push type, a screw-in type, or a rotary type attachment mechanism.
A push-type mounting mechanism is a fluorescent tube holder that has a protrusion with an elastically deformed retaining part (for example, a conical retaining part) formed at the tip, and the tip of the projecting part is formed on the substrate. This is a mechanism in which the fluorescent tube holder is held on the base material by the retaining portion by being pressed through the through-hole.
In addition, the screw-in type attachment mechanism is provided with a protrusion formed with a thread on the fluorescent tube holder, and the protrusion is screwed into a screw hole formed in the base material, thereby allowing the fluorescent tube holder to be based. It is a mechanism attached to the material.
In addition, as shown in, for example, Patent Document 1, the rotary attachment mechanism is provided with a protruding portion formed at the tip of an eccentric-shaped retaining portion such as an elliptical plate on the fluorescent tube holder. This is a mechanism in which the fluorescent tube holder is held on the base material by the retaining portion by rotating the fluorescent tube holder after the portion is inserted into the hole on the base material side having a shape substantially along the outer edge.

FIG. 5 is a simplified fluorescent tube holder Z showing the fluorescent tube fixing device (fluorescent tube holder) shown in Patent Document 1 mainly for explaining the attachment mechanism (rotary attachment mechanism) to the base material. Is expressed.
As shown in FIG. 5, the conventional fluorescent tube holder Z is provided with a holding portion 11 ′ for holding a fluorescent tube 80 by sandwiching the fluorescent tube 80 with a base 60 ′ in a predetermined main body portion 10 ′, and a main body. A protrusion 50 is provided on the lower surface of the portion 10 ′. Then, after the retaining portion 51 is inserted through the insertion hole 61 ′ formed in the base material 60 ′ in a shape substantially along the outer edge (substantially oval), by rotating the fluorescent tube holder Z, The fluorescent tube holder Z is held on the base material 60 ′ by the stopper 51 being engaged with the base material 60 ′.
Here, in the liquid crystal display device, in order to efficiently and uniformly irradiate the back surface of the liquid crystal display unit with light from the fluorescent tube 80, as shown in FIG. 5, the fluorescent tube holder Z and the base material 60 ' A reflection sheet 70 ′ (usually a white sheet) that reflects the light from the fluorescent tube is disposed therebetween. In this case, an insertion hole 71 ′ having substantially the same shape as the insertion hole 61 ′ of the base material 60 ′ is also formed in the reflection sheet 70 ′. In this case, the distance d between the lower surface of the main body portion 10 ′ and the retaining portion 51 is set to substantially match the thickness of the base material 60 ′ and the reflection sheet 70 ′.
Japanese Utility Model Publication No. 4-3475

However, since the reflection sheet 70 'is formed of a relatively soft material such as a thin film made of paper or plastic, the attachment mechanism of the fluorescent tube holder is a rotary attachment mechanism as shown in FIG. In this case, there is a problem in that the lower surface of the main body 10 'is rubbed against the reflection sheet 70' and easily damaged. The same applies to a screw-in type fluorescent tube holder.
In contrast, the push-type fluorescent tube holder described above does not rotate at the time of attachment, so there is no problem of easily damaging the reflection sheet. However, when removing this from the substrate, the retaining part is pressed with pliers or the like. Alternatively, there is a problem in that it is necessary to crush and it becomes difficult to replace and recycle parts.
Accordingly, the present invention has been made in view of the above circumstances, and its object is to easily attach and detach a fluorescent tube holder without damaging the substrate-side surface (reflective sheet or the like) as an attachment destination. It is another object of the present invention to provide a fluorescent tube holding mechanism and a liquid crystal display device including the same.

In order to achieve the above object, the present invention provides a fluorescent tube holder which is attached to a predetermined substrate and holds a fluorescent tube, a fluorescent tube holding mechanism using the same, or a liquid crystal display using such a fluorescent tube holding mechanism. It is configured as a liquid crystal display device configured to hold a fluorescent tube that performs backlighting of the part, and the fluorescent tube holder is formed on one surface (hereinafter referred to as the upper surface) on the fluorescent tube holder Threaded to project into the main body and the other surface (the surface opposite to the one surface, hereinafter referred to as the lower surface) and to be screwed into the screw hole formed in the base material. And a locking mechanism (fluorescent tube) that locks each of the plurality of protruding portions formed on the base material when the screw protruding portion is screwed into the screw hole of the base material. And a locking part provided on the holder). . In this case, the base material is formed on a screw hole into which the screw protrusion is screwed and on both sides sandwiching the screw hole, and the fluorescent tube is held when the screw protrusion is attached to the screw hole. There are provided a plurality of protrusions that are locked by a fitting side insertion hole or the like.
Thus, when the fluorescent tube holder is attached (screwed) to the base material, at least until the protrusion on the base material side is locked by the locking mechanism (the fitting hole of the main body portion). When the lower surface of the main body and the protrusion on the substrate side come into contact with each other, that is, the protrusion on the substrate serves as a spacer, the lower surface of the main body becomes the surface on the substrate side (for example, It is possible to prevent contact with the reflective sheet disposed on the surface of the substrate. Therefore, the fluorescent tube holder can be easily attached and detached without damaging the substrate-side surface (reflection sheet or the like).
Accordingly, a through-hole is formed in each of the protrusion of the base and the screw protrusion of the fluorescent tube holder between the base and the main body of the fluorescent tube holder, and the light of the fluorescent tube It is particularly suitable when a reflective sheet that reflects the light is disposed. The same applies to the case where a reflective layer corresponding to a reflective sheet is directly formed on the surface of the substrate.
Furthermore, according to the above configuration, the fluorescent tube holder in a state where the protrusion on the base material side is locked by the locking mechanism (the locking portion or the like of the fluorescent tube holder) (hereinafter referred to as a fixed state). Is fixed to the base material, it is possible to prevent loosening (fixing) to the screw hole due to vibration or the like.

The locking portion is, for example, formed on both sides of the other surface of the main body portion sandwiching the screw projection portion, and the screw projection portion is screwed into the screw hole of the base material. In some cases, a plurality of insertion holes into which the plurality of protrusions formed on the base material are inserted are considered.
Moreover, it is suitable if the depth of the said insertion hole of a fluorescent tube holder is formed below the height of the projection part of the said base material inserted in this.
That is, by appropriately setting (designing) the difference between the height of the protrusion of the base material and the depth of the insertion hole, between the lower surface of the main body portion and the surface on the base material side in the fixed state It is possible to set (design) the contact pressure appropriately or provide a gap between them.

Further, from the edge of the lower surface of the main body to the portion of the lower surface of the main body that is slid by the protrusion of the base when the screw protrusion is screwed into the screw hole of the base. It is more preferable that the groove guides the protrusion of the base material toward the locking portion and has a guide groove shallower than the height of the protrusion of the base material.
As a result, even if there is some play (play) between the screw protrusion and the screw hole of the base material, the base protrusion is guided to the locking portion of the main body to hold the fluorescent tube. The tool is properly positioned. The guide groove is formed so as to be shallower than the height of the protruding portion of the base material in order to prevent the lower surface of the main body portion and the surface of the base material from rubbing before the fixed state. It is.
In this case, if the guide groove is formed from the edge of the lower surface of the main body portion to a position in the vicinity of the locking portion, the operator can screw the fluorescent tube holder into the substrate side. In addition, immediately after the protruding portion of the base material comes into contact with the lower surface of the main body portion, the protruding portion of the base material is relatively large with respect to the locking portion including the insertion hole or the like. It is locked (inserted) through a step. As a result, it becomes clear to the operator that the protruding portion of the base material is “clicked” into the locking portion (inserted hole or the like), and where should the screwing be stopped and positioned? Can be easily grasped. As a result, the fluorescent tube held by the fluorescent tube holder is fixed in the correct orientation.
Further, if the guide groove is formed so as to gradually become shallower from the edge of the lower surface of the main body portion toward the side closer to the locking portion, the screwing operation of the fluorescent tube holder can be smoothly performed. Become.
Note that the guide groove is not necessarily provided as a configuration that can smoothly screw the fluorescent tube holder. For example, the screw protrusion on the lower surface of the main body is screwed into the screw hole of the base material. In the region including the portion that is slid by the protrusion of the base material when combined, the thickness of the main body is thinner on the edge side of the lower surface of the main body member than on the side closer to the locking portion A configuration in which a tapered portion is formed is also conceivable. This configuration is particularly suitable when the play (play) between the screw protrusion and the screw hole of the base material does not cause much problem.

According to the present invention, when the fluorescent tube holder is attached (screwed) to the base material, at least the base-side protrusion is locked by the predetermined locking mechanism or the locking portion of the main body. Up to this point, the base-side protrusion functions as a spacer between the lower surface of the main body and the surface of the base, so that the lower surface of the main body becomes the surface of the base (for example, It is possible to prevent contact with the reflection sheet disposed on the surface. Therefore, the fluorescent tube holder can be easily attached and detached without damaging the substrate-side surface (reflection sheet or the like).
In addition, since the fluorescent tube holder is fixed to the base member in a state of being locked by the locking portion or a predetermined locking mechanism, it is possible to prevent loosening (fixing) to the screw hole due to vibration or the like. it can.
Further, if the depth of the insertion hole constituting the engaging part of the fluorescent tube holder is formed to be equal to or lower than the height of the protruding part of the base material to be inserted therein, the lower surface of the main body part It is possible to appropriately set (design) the contact pressure between the substrate and the surface on the substrate side, or to provide a gap between them.
In addition, if the guide groove is formed on the lower surface of the main body, the projection of the base material is guided to the engaging portion of the main body and the fluorescent tube holder is appropriately positioned. is there. In particular, if the guide groove is formed from the edge of the lower surface of the main body portion to a position near the locking portion, the protrusion of the base material is locked to the locking portion (see above). A feeling of “clicking” becomes clear to the operator when fitting into the fitting hole, and it is preferable that the screwing can be easily stopped and positioned.
Further, the guide groove is formed so as to gradually become shallower from the edge of the lower surface of the main body portion toward the side closer to the locking portion, or the tapered portion is formed on the lower surface of the main body portion. If it is made, the screwing operation of the fluorescent tube holder is smooth and suitable.

Embodiments of the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention.
FIG. 1 is a diagram showing the shape of the fluorescent tube holder X according to the embodiment of the present invention, FIG. 2 is a cross-sectional view showing a mechanism for attaching the fluorescent tube holder X to the base material, and FIG. 4 is a schematic front view of a backlight unit Y that illuminates the back surface of the liquid crystal display unit, FIG. 4 is a diagram showing an example of a locking mechanism in a fluorescent tube holding mechanism according to an embodiment of the present invention, and FIG. 5 is a conventional fluorescent tube holder It is a figure showing Z.

As shown in FIG. 3, a fluorescent tube holder X according to an embodiment of the present invention is a fluorescent tube serving as a light source in a backlight unit Y that performs backlighting of a liquid crystal display unit (not shown) provided in a liquid crystal display device. The fluorescent tube 80 is held in a state of being attached to a base material 60 (for example, a metal housing) disposed on the back side of the liquid crystal display unit.
In addition, a reflection sheet 70 that reflects light from the fluorescent tube 80 is disposed on the surface of the base material 60 (the surface on the side where the fluorescent tube 80 is held) so as to be sandwiched between the fluorescent tube holder X and the substrate 60. The The reflective sheet 70 has a uniform white surface (surface facing the liquid crystal display unit), for example.

Next, the structure (shape) of the fluorescent tube holder X and the attachment mechanism for the base material 60 will be described with reference to FIGS. 1 and 2. In FIG. 1, the front, upper surface, lower surface, and side surfaces of the fluorescent tube holder X are shown, but the front, upper surface,... X does not mean the orientation in a state where X is attached to the liquid crystal display device. Specifically, the “upper surface” here is a surface facing the back surface of the liquid crystal display unit (liquid crystal panel) when the fluorescent tube holder X is attached to the liquid crystal display device, and the “lower surface” is the opposite. Means a face. Further, the “front surface” referred to here is a surface in the axial direction (longitudinal direction) of the fluorescent tube 80 held by the fluorescent tube holder X, and the “side surface” is a surface in a direction perpendicular to the axial direction.
The fluorescent tube holder X is an integrally molded product made entirely of plastic, resin, or the like, and has the same color as the surface of the reflective sheet 70 (usually normal) so as not to cause distribution (unevenness) in the intensity of irradiation light on the liquid crystal display unit. Is white).
As shown in FIG. 1, the fluorescent tube holder X has a plate-like main body 10 in which a fluorescent tube holding portion 20 is formed on one surface (hereinafter referred to as an upper surface for convenience).
Furthermore, an upper surface side protruding portion 30 that protrudes higher than the holding portion 20 is provided on the upper surface of the plate-like main body portion 10. The upper surface side protruding portion 30 secures a holding space for the fluorescent tube 80 held by the holding portion 20 so that the fluorescent tube 80 and the liquid crystal panel disposed on the upper surface side of the plate-like main body portion 10 do not interfere with each other. It plays the role of a spacer. Each of the holding portions 20 is formed in a substantially horseshoe shape (which can be said to be substantially U-shaped) when viewed from the front direction (the axial direction of the fluorescent tube 80 to be held). Three support portions 21 that support the peripheral surface of the fluorescent tube 80 are formed at three locations that are slightly smaller than the range of the outer edge (outer periphery). When the fluorescent tube 80 is pressed inside the holding unit 20, the holding unit 20 is elastically deformed and spreads, and the fluorescent tube 80 is fitted inside the holding unit 20. When the fluorescent tube 80 is fitted, the three support portions 21 come into contact with the peripheral surface of the fluorescent tube 80 due to the elasticity of the holding portion 20, and the fluorescent tube 80 is supported at three points for each holding portion 20 by the support portion 21. The

On the other hand, on the other surface of the plate-shaped main body 10 (the surface opposite to the one surface, hereinafter referred to as the lower surface for convenience), a screw hole 61 (see FIG. A protrusion 40 (hereinafter referred to as a screw protrusion 40) having a screw thread 41 to be screwed into (described later) is provided. In addition, the description of the screw thread 41 is abbreviate | omitted in the bottom view in FIG.
Further, a plurality of protrusions formed on the base 60 when the screw protrusions 40 are screwed into the screw holes 61 of the base 60 on both sides of the lower surface of the plate-like main body 10 sandwiching the screw protrusions 40. A plurality of locking holes 11 (an example of a locking portion and a fitting hole) for locking the projection 63 are formed by inserting each of the portions 63 (see FIG. 2, which will be described later).
In the example shown in FIG. 1, the locking holes 11 are provided one by one (two in total) at substantially symmetrical positions on both sides of the screw projection 40.

On the other hand, as shown in FIG. 2, a screw hole 61 in which a thread 62 a to be screwed with the screw projection 40 of the fluorescent tube holder X is formed in the base 60. Furthermore, when the screw protrusions 40 of the fluorescent tube holder X are screwed into the screw holes 61 on both sides sandwiching the screw hole 61, they are fitted into the locking holes 11 of the fluorescent tube holder X. A plurality of protrusions 63 to be locked are provided.
In the example shown in FIG. 2, the protrusions 63 are arranged one at a substantially symmetrical position on the both sides of the screw hole 61 so as to correspond to the locking hole 11 on the fluorescent tube holder X side (total 2). One) is provided.
Further, the reflection sheet 70 that is disposed between the base material 60 and the plate-like main body portion 10 of the fluorescent tube holder X and reflects the light from the fluorescent tube 80 is provided with a through hole 72 of the protrusion 63 of the base material 60, And the through-hole 71 of the screw projection part 40 of the fluorescent tube holder X is formed.
Further, as shown in FIG. 2, the depth d1 of the locking hole 11 on the fluorescent tube holder X side is formed to be equal to or lower than the height d2 of the protruding portion 63 of the base member 60 fitted and locked thereto ( d1 ≦ d2). The depth d1 of the locking hole 11 on the fluorescent tube holder X side is substantially equal to the length obtained by subtracting the thickness of the reflective sheet 70 from the height d2 of the protrusion 63 of the base member 60 fitted therein. Or a depth less than that.
Further, as shown in FIG. 1, when the screw protrusion 40 is screwed (screwed) into the screw hole 61 of the base member 60 on the lower surface of the plate-like main body 10 of the fluorescent tube holder X, The base material 60 is directed from the edge of the lower surface of the plate-like main body 10 toward the locking hole 11 on the portion of the base material 60 slid by the protrusion 63 (the portion where the tip of the protrusion 63 abuts and rubs). Guide grooves 12a and 12b for guiding the protrusions 63 (hereinafter referred to as the guide grooves 12 when collectively referred to) are formed. The depth of the guide groove 12 is shallower than the height d2 of the protrusion 63 of the substrate 60.

Here, the one guide groove 12a is formed when the screw protrusion 40 is screwed into the screw hole 61 of the base 60 (in the example of FIG. 1, when rotated clockwise toward the base 60). It is a groove formed in a portion that is slid by the protrusion 63 of the base material 60 before it is fitted into the locking hole 11 and locked. Hereinafter, the guide groove 12a is referred to as a front guide groove 12a.
When the screw projection 40 is screwed into the screw hole 61 of the base material 60, the other guide groove 12b is inserted after the projection 63 of the base material 60 is inserted into the locking hole 11 and then is further disengaged. And a groove formed in a portion slid by the protrusion 63. Hereinafter, the guide groove 12b is referred to as a rear guide groove 12b.
Further, as shown in the bottom view of FIG. 1, the guide groove 12 is formed from the edge of the lower surface of the plate-like main body portion 10 to a position near the locking hole 11, and directly into the locking hole 11. It is not connected to.
Further, as shown in the side view of FIG. 1, the guide groove 12 is formed so as to gradually become shallower from the edge side of the lower surface of the plate-like main body portion 10 toward the side close to the locking hole 11. In the present embodiment, the depth of the guide groove 12 is shallower than the depth of the locking hole 11.
Further, the upper surface side protruding portion 30 is formed along the axial direction of the screw protruding portion 40, and further, the upper surface protruding portion 30 is picked up so that the operation of screwing the screw protruding portion 40 into the screw hole 61 of the substrate 60 can be easily performed. It is formed in a shape extending in one direction as viewed from the direction (axial direction of the screw projection 40) (in the example shown in FIG. 1, it is substantially elliptical as viewed from the upper surface direction). That is, the upper surface side protruding portion 30 functions as a spacer and also functions as a handle portion when the fluorescent tube holder X is screwed into the base material 60.

Next, the operation and effect of the fluorescent tube holder X and the base material 60 to which the fluorescent tube holder X is mounted have the configuration shown in FIGS. 1 and 2 will be described.
Since the protrusion 63 is provided on the surface of the base member 60 and the locking hole 11 shallower than the height is provided on the lower surface of the fluorescent tube holder X, the fluorescent tube holder X is screwed into the base member 60. Until the protrusion 63 on the base material 60 side is fitted into the locking hole 11 of the plate-like main body 10 and locked when being attached (screwed), the bottom surface of the plate-like main body 10 and The protrusions 63 on the base material 60 side come into contact with each other, and the protrusions 63 serve as spacers. The lower surface of the plate-like main body 10 is the surface on the base material 60 side (here, the surface of the base material 60). It is possible to avoid contact with the reflection sheet 70). Therefore, the fluorescent tube holder X can be easily attached and detached without damaging the reflection sheet 70 on the base material 60 side.
Furthermore, finally, the fluorescent tube holder X is fixed to the base material 60 in a state (fixed state) in which the protrusion 63 on the base material 60 side is fitted in the locking hole 11 of the fluorescent tube holder X. It is possible to prevent the screwing (fixing) between the screw projection 40 and the screw hole 63 from being loosened due to vibration or the like.

Further, by appropriately setting (designing) the difference (d2−d1) between the height d2 of the protrusion of the base material and the depth d1 of the locking hole 11 of the fluorescent tube holder X, in the fixed state, It is possible to appropriately set (design) the contact pressure between the lower surface of the plate-shaped main body 10 and the surface of the reflection sheet 70 (surface on the base material 60 side), or to provide a gap therebetween. Become.
Further, since the guide groove 12 is formed in the portion of the lower surface of the plate-like main body 10 that is slid by the protrusion 63 of the base material 60, the gap between the screw protrusion 40 and the screw hole 61 of the base material 60 is formed. Even if there is some play (play), the projection 63 of the base member 60 is guided to the locking hole 11 of the plate-like main body 10 and the fluorescent tube holder X is appropriately positioned. The guide groove 12 is formed to be shallower than the height of the protrusion 63 of the base member 60 by the thickness of the reflective sheet 70, so that the lower surface of the plate-like main body 10 and the reflective sheet 70 are brought into the fixed state. It is possible to prevent the surface from rubbing.

Further, as described above, the guide groove 12 is formed from the edge of the lower surface of the plate-shaped main body 10 to a position near the locking hole 11 and is not directly connected to the locking hole 11. For this reason, when the operator screwed the fluorescent tube holder X toward the base material 60 side, the protruding portion 63 of the base material 60 and the lower surface of the plate-like main body portion 10 (the surface in the vicinity of the locking hole 11) Immediately after the contact between the protrusion 63 and the locking hole 11, the protrusion 63 is inserted through a relatively large step. As a result, the sensation that the protrusion 63 is “clicked” into the locking hole 11 becomes clear to the operator, and it is possible to easily grasp where the screwing should be stopped and positioned. As a result, the fluorescent tube 80 held by the fluorescent tube holder X is fixed in the correct orientation. Further, since the guide groove 12 is formed so as to gradually become shallower from the edge side of the lower surface of the plate-like main body 10 toward the side closer to the locking hole 11, the screwing operation of the fluorescent tube holder X is smooth. It becomes.
Further, as the guide groove 12, in addition to the front guide groove 12 a, the rear guide groove 12 b is also formed, so that the screw protrusion 40 is screwed into the screw hole 61 of the base material 60 and the base material 60. After the protrusion 63 is fitted into the locking hole 11, when the fitting is further disengaged and goes too far (when it goes beyond the fixed state), the operation of returning to the fixed state becomes smooth. Thus, the operator can quickly screw in the fluorescent tube holder X without fear of screwing in excessively than in the fixed state. The work of slowly returning to the original by the minute becomes possible. As a result, the mounting time of the fluorescent tube holder X can be shortened as compared with the case where the fluorescent tube holder X is slowly screwed in because of fear of screwing in too far from the fixed state.
In consideration of the secure screwing (fixing) between the screw projection 40 and the screw hole 61 and the workability of the screwing operation, the screw thread 41 of the screw projection 40 and the screw to be screwed therewith are considered. It is desirable that the mountain 62a is formed so as to be screwed (becomes the fixed state) by a rotation of about two rotations (approximately 360 °) from a minute angle.

By the way, it is not always necessary to provide the guide groove 12 as a configuration capable of smoothly screwing the fluorescent tube holder X.
For example, if the play (play) between the screw projection 40 and the screw hole 61 of the base material 60 does not matter so much, the screw projection 40 is formed on the bottom surface of the plate-like main body 10. In a certain region including a portion that is slid by the protruding portion of the base material when screwed into the screw hole 61 of the 60, the edge of the lower surface of the plate-like member 10 is more than the side closer to the locking hole 11 A configuration in which a tapered portion (inclined surface) where the thickness of the plate-like main body portion 10 is thin is also conceivable.
In the above-described embodiment, as an example of a locking mechanism that locks each of the protrusions 63 of the base member 60 when the screw protrusions 40 are screwed into the screw holes 61 of the base member 60, the fluorescent tube holder Although the structure in which the locking hole 11 for fitting the protrusion 63 of the base material 60 into X is shown, the present invention is not limited to this.
FIG. 4 is a diagram (plan view) illustrating an example of a locking mechanism in the fluorescent tube holding mechanism according to the embodiment of the present invention. Note that the fluorescent tube holder X ′ shown in FIG. 4 has a configuration in which the insertion hole 11 is removed from the fluorescent tube holder X, for example.
As the locking mechanism, for example, as shown in FIG. 4, when the fluorescent tube holder X ′ is screwed to the base material 60 and reaches a predetermined fixing position, the protrusion 63 of the base material 60 is A mechanism that is locked by the edge 10a of the plate-like main body 10 in the fluorescent tube holder X ′ is also conceivable.

  The present invention can be used for a fluorescent tube holder.

The figure showing the shape of the fluorescent tube holder X which concerns on embodiment of this invention. Sectional drawing showing the attachment mechanism with respect to the base material of the fluorescent tube holder X. FIG. The schematic front view of the backlight part Y which illuminates the back surface of the liquid crystal display part in a liquid crystal display device. The figure showing an example of the latching mechanism in the fluorescent tube holding mechanism which concerns on the Example of this invention. The figure showing the conventional fluorescent tube holder Z. FIG.

Explanation of symbols

X, X '... fluorescent tube holder 10 ... plate body 11 ... locking hole 12 ... guide groove 20 ... holding part 21 ... support part 30 ... upper surface side protrusion 40 ... screw protrusion 41, 62a ... screw thread 60 ... Substrate 61 ... Screw hole 62 ... Screw tapping part 70 ... Reflection sheets 71, 72 ... Through hole 80 ... Fluorescent tube

Claims (10)

A fluorescent tube holder that is attached to a predetermined substrate and holds a fluorescent tube,
A main body having a fluorescent tube holder formed on one surface;
A screw projection portion formed with a thread projecting on the other surface opposite to the one surface of the main body portion and screwed into a screw hole formed in the base material;
A locking portion for locking each of the plurality of protrusions formed on the base material when the screw protrusion is screwed into the screw hole of the base material;
A fluorescent tube holder characterized by comprising:   The locking portion is formed on each of both sides of the other surface of the main body portion sandwiching the screw projection portion, and the screw projection portion is formed on the base material when screwed into the screw hole of the base material. The fluorescent tube holder according to claim 1, comprising a plurality of insertion holes into which the plurality of protrusions are inserted.   The fluorescent tube holder according to claim 2, wherein a depth of the insertion hole is formed to be equal to or less than a height of a protruding portion of the base material to be inserted therein.   An edge of the other surface of the main body portion is formed on a portion of the other surface of the main body portion that is slid by the protrusion portion of the base material when the screw protrusion portion is screwed into the screw hole of the base material. The guide groove which is a groove | channel which guides the projection part of the said base material from a part toward the said latching | locking part, and is shallower than the height of the projection part of the said base material is formed in any one of Claims 1-3. Fluorescent tube holder.   The fluorescent tube holder according to claim 4, wherein the guide groove is formed from an edge portion of the other surface of the main body portion to a position near the locking portion.   The fluorescent tube holder according to claim 4, wherein the guide groove is formed so as to gradually become shallower from an edge side of the other surface of the main body portion toward a side closer to the locking portion. Ingredients. A fluorescent tube holding mechanism having a fluorescent tube holder for holding a fluorescent tube, and a predetermined substrate to which the fluorescent tube holder is attached,
The base material is provided with a plurality of protrusions formed on both sides of the screw hole and the screw hole,
The fluorescent tube holder is provided with a main body portion having a fluorescent tube holding portion formed on one surface thereof, and is protruded from the other surface of the main body portion opposite to the one surface, and is screwed into a screw hole of the base material. A screw projection with a thread to be joined is provided,
A fluorescent tube holder comprising a locking mechanism that locks each of the plurality of protrusions formed on the base material when the screw protrusion is screwed into the screw hole of the base material. mechanism.   When the locking mechanism is formed on each side of the other surface of the main body with the screw protrusion interposed therebetween, and the screw protrusion is screwed into the screw hole of the base, each protrusion of the base The fluorescent tube holding mechanism according to claim 7, wherein the fluorescent tube holding mechanism is configured by a plurality of insertion holes to be inserted.   Between the base material and the main body portion of the fluorescent tube holder, a through hole is formed in each of the protrusion portion of the base material and the screw protrusion portion of the fluorescent tube holder to reflect the light of the fluorescent tube. The fluorescent tube holding mechanism according to claim 8, wherein a reflective sheet is disposed.   A liquid crystal display device comprising the fluorescent tube holding mechanism according to claim 9, which holds a fluorescent tube that performs backlighting of the liquid crystal display unit.

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