KR100794007B1 - Display device lighting unit, lamp holding member used thereto, and liquid crystal unit having display device lighting unit - Google Patents

Abstract

The lighting device for a display device of the present invention can reduce the number of parts and provide an effect of preventing assembly variation in the manufacturing process, and can further improve display quality and improve impact resistance. The authentication apparatus for a display device of this invention has a light source lamp and a lamp holding member, (1) The said lamp holding member is a form in which the several support part was integrated, (2) The said light source lamp is curved shape, such as U-shape. Wherein at least a portion of the curved portion is supported by the support portion of the lamp holding member, (3) the lamp holding member includes a support portion having means for reducing a lamp support area such as protrusions and recesses; The lamp holding member is fixed in the lighting apparatus after the light source lamp is fixed to the supporting portion of the lamp holding member, such as the configured structure and (4) at least one of the fixing portions of the lamp holding member has a two-divided structure. It is a lighting device for display devices which is a form which has any one, or a combination of these forms.

Light source lamp, lamp holding member, lighting device, optical sheet, light guide plate

Description

A liquid crystal display device having a lighting device for a display device, a lamp holding member used for the same, and a lighting device for a display device, and a liquid crystal display unit having a lighting device for a display device.

1A is a plan view schematically showing an example of a lamp holding member in which a supporting portion is integrated in a lighting device for a display device of the present invention.

Fig. 1B is a schematic cross sectional view of the lamp holding member shown in Fig. 1A.

Fig. 2 is a plan view schematically showing another example of the lamp holding member in which the supporting portion is integrated in the lighting device for display device of the present invention.

Fig. 3A is a perspective schematic view showing an example of a lamp holding member for supporting a U-shaped curved portion of a U-shaped fluorescent tube in the lighting device for a display device of the present invention.

Fig. 3B is a perspective schematic view showing an example of a lamp holding member for supporting a U-shaped curved portion of a U-shaped fluorescent tube in the lighting device for a display device of the present invention.

Fig. 3C is a plan schematic diagram illustrating a state in which deviations in the X and Y directions of the U-shaped fluorescent tube are generated in the lamp holding member of Fig. 3B.

Fig. 3D is a perspective schematic diagram illustrating a state in which the deviation of the X and Y directions of the U-shaped fluorescent tube is generated in the lamp holding member of Fig. 3B.

Fig. 3E is a cross-sectional conceptual view of the lamp holding member of Fig. 3B.

Fig. 3F is a perspective schematic view showing an example of a lamp holding member for widening the area in contact with the backlight angle of the supporting portion.

Fig. 4 is a perspective schematic view showing an example of a storage frame in the lighting device for a display device of the present invention.

Fig. 5 is a cross-sectional schematic diagram showing one example of a form in which a lamp holding member is attached and stored in a storage frame in the lighting device for display device of the present invention.

Fig. 6 is a sectional schematic view showing one example of a form in which a lamp holding member having a shape filling a space between a storage frame and a light source lamp is stored in a storage frame in the lighting device for a display device of the present invention.

Fig. 7 is a cross-sectional schematic diagram showing an example of a form in which a convex portion is penetrated and stored in a storage frame by a lamp holding member having a convex portion in the lighting device for a display device of the present invention.

Fig. 8A is a perspective schematic view showing an example of a lamp holding member provided with projections on a supporting portion.

Fig. 8B is a perspective schematic view showing an example of a lamp holding member provided with projections on a supporting portion.

Fig. 9A is an explanatory diagram showing a support range L of the upper portion of the light source lamp in the support portion of the lamp holding member.

Fig. 9B is an explanatory diagram showing the length W of the light source lamp direction in the supporting portion of the lamp holding member.

Fig. 10 is a cross sectional schematic diagram showing an essential part of an edge light type backlight structure;

Fig. 11 is an exploded perspective schematic showing the main part of the direct backlight structure.

Fig. 12 is a plan view schematically showing a direct type backlight in a state where variation occurs in the light source lamp.

Fig. 13 is a graph showing the relationship between the length of a cold cathode tube and the voltage drop;

Fig. 14A shows a lamp holding member in the case where the lamp holding member has a structure fixed in the lighting device for a display device after the light source lamp is fixed to the supporting portion of the lamp holding member in the lighting device for a display device of the present invention. Isometric schematic showing the form of a.

Fig. 14B is a perspective schematic view showing a form in which a curved portion of a light source lamp is supported by a plurality of support portions of a lamp holding member in the lighting apparatus for display device of the present invention.

Fig. 14C is a perspective schematic view showing a curved portion of a light source lamp covered and supported by a support portion of a lamp holding member in accordance with its shape in the lighting device for display device of the present invention.

Fig. 15A is a cross-sectional conceptual view showing the lamp holding member of Fig. 14A in which the lamp holding member is opened downward to insert a light source lamp into the supporting portion.

Fig. 15B is a cross-sectional conceptual view of the lamp holding member of Fig. 14A showing fixing of a lamp holding member having a light source lamp inserted into the supporting portion to a backlight angle;

Fig. 16A is a conceptual view showing a form in which the supporting portions are arranged side by side on approximately the same line in the case where the curved portion of the light source lamp is supported at two points;

Fig. 16B is a conceptual view showing a form in which the curved portion of the light source lamp is supported at three points;

Fig. 17A is a conceptual view showing a form in which one side of the curved portion of the light source lamp is covered and supported by the supporting portion of the lamp holding member in accordance with the shape thereof; In this case, almost all of one side inside the curved part is supported.

Fig. 17B is a conceptual view showing a form in which one side of the curved portion of the light source lamp is covered and supported by the support portion of the lamp holding member in accordance with the shape thereof; In this case, a part of one side inside the curve part is supported.

Fig. 18A is a side schematic view showing an example of a form in which a curved portion of a light source lamp having a curved portion is supported in an edge light type backlight provided with at least one of the light source lamp having a curved portion;

Fig. 18B is an enlarged perspective view showing the vicinity of the supporting portion (part enclosed by a dotted line in Fig. 18A) in the lamp holding member of Fig. 18A.

FIG. 18C is a front schematic view showing a cavity forming surface of the support in the lamp holding member of FIG. 18A; FIG.

Fig. 19A is a cross sectional schematic view showing an example of a fixing form of a lamp holding member in an edge light type backlight provided with at least one light source lamp having a curved portion;

19B is a perspective schematic view showing an example of a lamp holding member having protrusions on a side (opposite side of the light guide plate).

20 is a schematic diagram showing an example of a combination of a lamp holding member and a reflector (containment frame) that can be fitted.

Fig. 21 (a) is a schematic diagram showing a path of a GND harness line, and (b) is a sectional schematic diagram showing a state in which a lamp holding member is fixed in a reflector (containment frame) to which a GND harness line is attached.

<Explanation of symbols for the main parts of the drawings>

11, 22, 31, 33, 34, 35, 36, 37a, 38a, 38b, 38c, 39, 40, 41, 51, 61, 71, 81, 83, 91, 121: lamp holding member

12: straight tube fluorescent tube

21: U-shaped fluorescent tube

32: cavity part of the lamp holding member 31

33 ', 34', 35 ', 36', 37a ', 37b', 38a ', 38b', 38c ', 81', 83 ', 91'

33 ", 34", 35 ", 36", 37a ", 38a", 38b ", 38" c, 81 ", 83", 91 ": fixing

40 ": projection of the lamp holding member 31

41: storage frame

52: adhesive

82, 84: protrusion

101: light guide plate

102: rod-shaped light source

103: lamp reflector (containment frame)

104: optical sheet

105: liquid crystal panel

111: sheet metal

112: highly reflective resin

113: rod-shaped light source

114: storage frame (lamp frame)

115: diffuser plate

116: Optical Sheet

117 display element (liquid crystal panel element)

118: frame

131: GND harness wire

132: double-sided tape

The present invention relates to a lighting device for a display device, a lamp holding member and a liquid crystal display device. More specifically, a liquid crystal display comprising a lighting device for a display device, a lamp holding member and a lighting device for a display device, which are suitable for constituting a backlight of a transmissive or semi-transmissive liquid crystal display device having a transmission region in the liquid crystal display element. Relates to a device.

The illuminating device for a display apparatus is for illuminating the apparatus which has the display means by light, and is used widely in the backlight part etc. in a liquid crystal display device, for example. That is, in the liquid crystal display device, since the liquid crystal panel itself does not emit light, the illuminating device for display devices is provided as a backlight part which makes light into a liquid crystal panel normally in a transmissive or semi-transmissive liquid crystal display device. Such a liquid crystal display device is indispensable in information and video display means, and recently, for example, low power consumption, light weight, and thin shape in display panels of consumer video monitors, industrial equipment monitors, information portable terminals, and the like. High-quality products that fully utilize the characteristics of the liquid crystal display is attracting attention, and its application field is expanding.

By the way, the backlight used for a liquid crystal display device is an edge light type (side light type) and direct type (direct type) as two systems at present. In the case of the edge light type, as shown in FIG. 10, a rod-shaped light source 102 such as a cold cathode tube is disposed on the side of a transparent plate 101 called a light guide plate as a structural feature. In this case, light is incident on the light guide plate 101 from the light source, and the light is emitted from the light guide plate 101 toward the liquid crystal panel 105 by wrinkle processing, printing, prism treatment, or the like. Thereby, although thinning is possible, increasing the light source to brighten the brightness on one side will affect the thickness of the module in that state. In addition, the so-called light guide plate 101 is heavy when a large continuity such as acryl is used.

On the other hand, in the case of the direct type, as shown in Fig. 11, a plurality of rod-shaped light sources 113, such as a cold cathode tube, are provided on the back of the display element 117, such as a liquid crystal panel. In this case, although the light of the rod-shaped light source 113 is directly incident on the display element 117, the diffuser plate 115, the diffusion sheet, the condenser lens, and the light which uniformly screen the light amount from the rod-shaped light source 113 are used. The display element 117 is arranged by arranging an optical sheet 116 composed of a polarization selective reflective transmission sheet and a protective, diffusion sheet or the like. As a result, a large number of light sources 113 can be arranged, and thus the amount of light can be collected, and the light is directly incident on the display element 117, so that the loss of light is small, and the size of more than 20 types can be easily performed. On the other hand, the number of light sources 113 increases, so that the number of parts increases, and the driving circuit of the light source 113 also becomes a large one. In addition, power consumption is large, and the total amount of heat generation increases.

Such a liquid crystal display has begun to advance in small display devices, and has been developed into a market for displays of notebook personal computers (PCs) and mobile phones, and its technology has been developed. In these fields, the display size is mainstream up to about 15 types, and the edge light method has been selected from the viewpoint of commerciality as a thinning condition is required.

At present, the liquid crystal display device has reached an exponentially large size by completion of a process using a larger mother glass and the like, and can be established as a home television (20 to 50 type). Such a television is a basic performance where brightness is more important than a PC or a mobile phone. For example, a brightness specification of 500 candela (cd / m 2) or more is required for televisions, while a PC monitor typically has a specification of about 250 candela (cd / m 2). In such a background, a direct backlight is suitable for providing a large and high brightness backlight.

Regarding a lighting device for a display device that can be used in a conventional liquid crystal display device or the like, a lamp holder made of a transparent member having a flexible circular grip shape having an opening in a part thereof and having flexibility [for example, Japanese Patent Laid-Open No. 2001) -210126 (see pages 1 to 2)], a reflecting plate for condensing the light projected from the light source to the light guide plate is made of metal, and a backlight device supporting the light source (for example, Japanese Patent Laid-Open No. 10). -207406 (see pages 1 to 2)], a fluorescent lamp is housed inside the gutter-shaped unit support member, and the lamp support is made of a translucent or light reflective synthetic resin between the fluorescent lamp and the unit support member. A fluorescent lamp unit (see, for example, Japanese Patent Application Laid-Open No. 9-330613 (see pages 1 to 2)) in which a member is disposed is disclosed. The.

However, in these apparatuses, there is room for devising to appropriately respond in the liquid crystal field, which requires high quality and large size, and low cost, in order to improve the marketability. For example, it is possible to reduce the number of parts to have an advantage in manufacturing, to eliminate variations in assembling in the manufacturing process of the lighting apparatus and to eliminate variations in display quality resulting therefrom, or In order to suppress the fall of the display quality resulting from a structure and to make high quality and high commercial property, there existed room to devise in order to improve these characteristics especially in the development of a liquid crystal television.

Moreover, in order to stabilize a fluorescent lamp, the illumination device which connected the external electrode of one end and the other end side of each of several fluorescent lamps in common, and connected it to one boost lighting circuit is disclosed (for example, Japanese patent) See Publication 2003-36723 (pages 1 to 2). In this lighting apparatus, a plurality of fluorescent lamps are connected to one lighting circuit by a lamp fixture made of a conductive metal having a plurality of cross-sectional inverted U-shaped concave grooves. However, even in such a device, in order to suitably apply to a liquid crystal television or the like which requires a large size and high brightness backlight, and to provide a product having high quality display performance in the case where the fixing part of the lamp is rubber or plastic. There was room for design.

By the way, the lighting apparatus provided with the pair of support mechanism which clamps and supports a curved discharge lamp by the casing side wall part is disclosed [for example, Unexamined-Japanese-Patent No. 7-72476 (1st) Page 2). In this lighting apparatus, one place is supported in the bending part of one lamp. However, in such a device, a deviation occurs when the lamp is installed, and variations in the lamp attachment affect the display quality and reliability. In particular, in a large and high brightness lighting device, it is important to suppress fluctuations in the lamp attachment. Therefore, in the conventional lighting apparatus, there was room for the shape of the support portion to which the bent portion of the lamp was attached.

The present invention has been made in view of the above-described phenomenon, and after reducing the number of parts and having an effect of preventing assembly variation in the manufacturing process, the display device can further improve display quality and improve impact resistance. It is an object of the present invention to provide a liquid crystal display device including a lamp holding member and a lighting device for a display device.

MEANS TO SOLVE THE PROBLEM The present inventors can apply suitably to the backlight of a liquid crystal display device, for example, and the light source lamp hold | maintains several lamp | ramp while the lighting apparatus for display apparatuses which can provide a large size and high brightness backlight, for example. In the case of being individually supported by each support of the member, for example, variations in the manufacturing process, curvature of the light source lamp 113, and the like occur, as shown in FIG. 12, whereby variations in display quality are caused. It has been found that it is possible to stably provide the number of parts and to stably provide high quality by using a lamp holding member that integrates and provides a plurality of supporting portions, focusing on what occurs first.

In addition, although fluorescent lamps as conventional light source lamps are each individually in a straight line shape, attention has been paid to a light source lamp having a curved portion such as a U-shaped tube being useful for a backlight constituting a liquid crystal display device or the like. For example, in the case of using the U-shaped tube, since one U-shaped tube corresponds to two straight tubes, the number of parts of the light source unit is halved, thereby greatly reducing the number of parts. In addition, since the power consumption of the cold cathode tube generally used correlates with the voltage drop graph as shown in Fig. 13, the number of electrodes in the U-tube decreases, thereby enabling the power consumption to be extremely reduced. That is, since the cathode drop voltage is approximately determined by the work function of the metal, the reduction of the number of electrodes is effective for the reduction of power consumption. In this case, one U-shaped tube corresponds to two straight tubes, and the total length of the light source 113 is equal, but the number of electrodes decreases in half. If the light source lamp which has such a curved part is provided, and the thing which has a light-diffusion layer is used, it will be suitable for the backlight of a direct type | mold, for example, and it will become advantageous in especially large size.

In the case of using a light source lamp having such a curved portion, in order to stabilize the display quality, the support method of the light source lamp is important, and the light source lamp is directly stored by having at least a part of the curved portion supported by the support portion of the lamp holding member. It was found to avoid contact with a member such as a frame and to exert an effect such as standardization of assembly work and stabilization of display quality in the process of manufacturing such an apparatus.

Moreover, in the area supported by the support part of the lamp holding member of a light source lamp, it focused on being darker than other area | region, and if it can eliminate this, it can make high merchandise high quality. And it discovered that what was necessary is just to reduce the lamp support area in the support part of the lamp holding member in such a display apparatus lighting device. That is, the temperature distribution of a light source lamp differs in the support part site | part of a lamp holding member, and the other site | part, and it is thought that this is related to the uniformity of the brightness of a lighting device, and the lamp support area in the support part of a lamp holding member. If it decreases, the uniformity of the temperature distribution of the light source lamp is maintained and the uniformity of the brightness is improved.

In addition, as a result of examining a shape in which the variation of the assembly of the light source lamp is very small, the lamp holding member is constituted by the supporting part and the fixing part, and at least one of the fixing parts has a structure in which two parts are divided, or the light source lamp holds the lamp. When the lamp holding member is fixed in the lighting device for a display device after being fixed to the supporting part of the supporting member, the fluctuation of the lamp attachment in the vertical direction (Z-axis direction) is improved, and the curved portion of the light source lamp It has been found that when the support portion is supported by the support portion or the curved portion is covered and supported by the support portion in accordance with its shape, the variation in the lamp attachment in the longitudinal and horizontal directions (X, Y-axis directions) is improved and the display quality is improved.

Thus, in the lighting device for a display device, (1) the support of the lamp holding member is integrated, (2) the support at the curved portion of the light source lamp having the curved portion, and (3) the support of the lamp holding member. Means for reducing the holding area of the lamp holding means, (4) a means for fixing a light source lamp such as a two-split structure of the fixing part of the lamp holding member to the supporting part of the lamp holding member, and then fixing it in the lighting device for a display device; By the combination of these, the present invention has been reached in a way that can completely solve the above problems.

That is, the present invention is a lighting device for a display device having a light source lamp and a lamp holding member, wherein the lamp holding member includes a plurality of support parts, and is at least partly integrated. .

The present invention is also a lighting device for a display device having a light source lamp and a lamp holding member, wherein the light source lamp has a curved portion, and at least a portion of the curved portion is supported by the support of the lamp holding member. It is also a lighting device.

The present invention is also a lighting device for a display device having a light source lamp and a lamp holding member, wherein the lamp holding member also includes a support having a means for reducing the lamp holding area. Do.

The present invention is a lighting device for a display device having a light source lamp and a lamp holding member, wherein the lamp holding member is constituted by a supporting portion and a fixing portion, wherein at least one of the fixing portions has a structure divided into two. It is also a lighting device.

The present invention is a lighting device for a display device having a light source lamp and a lamp holding member, wherein the lamp holding member is a lighting device for a display device after the light source lamp is fixed to the support of the lamp holding member. It is also a lighting device for a display device having a structure fixed therein.

The present invention is described in detail below.

The illuminating device for display device of this invention has a light source lamp and a lamp holding member, and such illuminating device is suitable as an illuminating device for liquid crystal display devices. In this invention, it is preferable to use especially as a backlight of a direct type | mold. It is also possible to apply to an edge light type backlight. As a preferable aspect of a lamp holding member, the part (also called a support part in this specification) which supports (holds) a light source lamp, and the part used for fixing to a backlight angle, a reflector, etc. (also called a fixed part in this specification) For example). The lamp holding member is also called a lamp holder.

As said lighting apparatus, the form etc. which the light source lamp was arrange | positioned on the reflecting plate via the support part of the lamp holding member on a reflecting plate are mentioned as an example. In such a structure, one or more light source lamps are used, but it is preferable to apply this invention in the structure which uses multiple.

In addition, in the edge light type, the form etc. which the light source lamp was arrange | positioned on the 1 or 2 or more side surface of a transparent resin light guide plate through the support part of the lamp holding member are mentioned, for example.

In the lighting device of the present invention, other structural members may be included as long as they have these essential structural members.

When the illumination device is applied to a liquid crystal display device, a light source lamp Y is usually disposed on a reflecting plate, and a diffuser plate or a diffusion sheet, a condenser lens, a light polarization selective reflective transmission sheet, a protective and diffusion sheet, an electron Various optical sheets, such as a shielding sheet (conductive sheet, ITO sheet), etc. are laminated | stacked and arrange | positioned, and an illumination device is comprised and a liquid crystal display device is comprised with a liquid crystal panel.

The form of the lighting device for a display device of the present invention is (1) a lamp holding member including a plurality of supporting portions, at least partly integrated, (2) a light source lamp having a curved portion, and at least among curved portions. A part of which is supported by a support of the lamp holding member, (3) a form in which the lamp holding member comprises a support having means for reducing the lamp supporting area, and (4) a fixing portion of the lamp holding member After a light source lamp such as a two-divided structure is fixed to the support of the lamp holding member, any one of the forms having a structure fixed to the lighting device for display device or a combination thereof is used.

In the form of the above-described lighting apparatus, in the case of (1), two or more of the support portions provided separately to the plurality of lamp holding members are integrated into one lamp holding member, and the number of parts is reduced. It is possible to easily support the light source lamp at a constant interval with a constant interval between the support portions easily, and to manufacture a display device having excellent display quality at low cost. In addition, in the case of (2), the light source lamp can be effectively supported with high accuracy, and the impact resistance of the light source lamp and its arrangement can be improved. Moreover, the impact resistance of the arrangement | positioning state of a light source lamp can be improved more effectively by supporting the linear part and curved part in a light source lamp.

In these forms, for example, a form in which a plurality of straight portions of the light source lamp are supported by a lamp holding member having an integrated support portion, and in the case where the light source lamp has a curved portion, the curved portions have an integrated support portion. The form etc. which are supported by the lamp holding member are mentioned.

In the aspect of the above (3), for example, a form in which protrusions are provided on the support portion may be used so that the contact area between the light source lamp and the support portion of the lamp holding member decreases. In addition to such a form, the effect of this invention can be exhibited as long as the contact area of a light source lamp and the support part of a lamp holding member becomes small. Thereby, since the temperature distribution of a light source lamp can be made uniform, it becomes possible to improve the uniformity of the brightness of a lighting device. Moreover, it is preferable that the support part of the lamp holding member is a material with low thermal conductivity.

In the aspect of said (4), it is suitable for a lamp holding member to be comprised by the support part and the fixing part, and to have a structure by which at least one of the said fixing parts was divided into two. According to the lamp holding member of this type, it is possible to fix the light source lamp in the support portion of the lamp holding member through the fixing portion by opening and closing the fixing portion before fixing to the backlight angle, the reflector, etc. After the fixing part is fixed in the holding state, the fixing part cannot be opened and closed, so that the light source lamp can be held with sufficient holding strength.

In the aspect of the above (4), after fixing the light source lamp to the support of the lamp holding member, the lamp holding member is fixed to a backlight angle (sheet metal or the like) in the lighting apparatus for display device. The lower part (fixing part) of the supporting member has a form that can be opened and closed in the lower direction (direction of the backlight angle) and the light source lamp is fixed in the supporting part of the lamp holding member through the lower part (fixing part), and then the lower part of the lamp holding member ( For example, the fixing part is inserted into the backlight angle. In this case, when the lower part (fixing part) of the lamp holding member is formed of a material having a degree of freedom, such as Si (silicone) rubber, the lower part (fixing part) is opened downward to fix the light source lamp, and then insert it into the backlight angle. It is easy to carry out operation, and preferable.

Although the lamp attachment variation is improved by such a form, the attachment of the light source lamp in the assembling process will be described in more detail with reference to the drawings.

3A and 3B show an example of U-curve portion support shape in a light source lamp having a curved shape. However, as shown in Fig. 3A, when the partition wall is inserted into a lamp holding member formed of Si rubber or the like, the assembling step is performed. Difficult to attach Further, after fixing the lower part (fixing part) of the lamp holding member to the backlight angle in the lighting device for the display device as shown in Fig. 3B, the light source lamp is fixed to the support part of the lamp holding member, that is, the lower part of the lamp holding member. (Fixed part) is inserted into the backlight angle, and then the support portion of the lamp holding member is opened in the upper direction (opposite to the backlight angle) so that the light source lamp is fixed in the support portion. There is a risk of fluctuation in the lamp attachment position. In addition, when the material of the support part is a soft material such as Si rubber, there is a possibility that variations in the Y and Z directions may occur, which may affect the display quality and reliability of the display device. Referring to Fig. 3E, which shows a cross-sectional conceptual view of the lamp holding member of Fig. 3B, in the case of a soft material such as Si rubber, since the restraint force in the direction of the arrow is weak in the drawing, there is a concern that a fixed variation in the Z direction may occur. In particular, when applied to a liquid crystal display device, in order to provide a stable display quality of a high level conventionally, there is a possibility that variations (deviation) in the X and Y axis directions as shown in FIGS. 3C and 3D may not be sufficiently suppressed. . 3C and 3D, the position of the U-shaped fluorescent tube before the deviation occurs is indicated by a dotted line, and shifted to the position indicated by the solid line by shifting in the direction of the arrow.

In the case of a material having a smaller elastic force (degree of freedom) as compared to Si rubber such as polycarbonate, the Z-axis direction is strong, but there is a possibility that it may shift in the X- and Y-axis directions as shown in FIGS. 3C and 3D.

As one embodiment to solve the above problems, as shown in Fig. 3F, the lamp holding portion is displayed by fitting the support portion (upper portion; the gripping portion of the light source lamp) and the fixing portion (lower portion; backlight angle) of the lamp holding member. The form which makes the area which contact | connects the backlight angle of the support part (upper part) of the part fixed in an apparatus wide is mentioned as an example. That is, as a preferable aspect of the illuminating device for display apparatuses of this invention, the form whose width | variety of the bottom surface of the support part in the lamp holding member is the magnitude | size more than the width of the part which hold | maintained the light source lamp is mentioned. In addition, "above" and "less than" in this specification include the said numerical value. Thereby, it becomes possible to restrain the fixed fluctuation | variation of the lamp holding member itself, and to stably install a light source lamp in the backlight angle in a display apparatus. In this aspect, the support portion of the lamp holding member is preferably made of an elastic body (material having elastic force), and preferably made of silicon rubber (Si rubber) or the like.

Moreover, in the said form, as shown in FIG. 3F, the width X of the bottom surface of the support part in the lamp holding member is the contact length between the support part (upper part) and the fixing member (backlight angle), and the fixing part. The width (a + b + c) of the portion holding the light source lamp is expressed as the sum of the width of the (lower part) and the sum of the diameter (a) of the light source lamp and the thickness (b and c) of the support part (upper part). Is represented, the relationship X X (a + b + c) is established.

In addition, in order to obtain the shape with the least variation in assembling while considering the lamp attachment in the assembling process, (a) the structure in which the lamp holding member is constituted by the supporting portion and the fixing portion, and at least one of the fixing portions is divided into two What is necessary is just to set it as the form which has a structure in which the fixing part of the lamp holding member was fixed in the illuminating device for display apparatuses after the light source lamps, such as a shape which it has, are fixed to the support part of the lamp holding member. Thereby, the shift | offset | difference with respect to an up-down direction (Z-axis direction in FIG. 3B) is suppressed, and the fluctuation | variation of a lamp attachment is further improved and it becomes possible to provide a product of stable quality as a display apparatus. Although the light source lamp may or may not have a curved shape, it is suitable to apply to what has a curved shape. In Fig. 14A, a lamp holding member used in the above embodiment is shown. In this case, the shape of the lamp holding member is an annular shape so that the supporting portion (the portion supporting the light source lamp) is suitable for the cross-sectional shape of the light source lamp, and the fixing portion (fitting with the backlight angle to fix the lamp holding member in the display device). And a lamp holding member, together with the supporting portion (a portion for supporting the light source lamp), as shown in Fig. 15A, to secure the fixing portion (lamp holding member). After the light source lamp is inserted into the support part by opening the part to be fixed in the display device, the fixing part is fitted to fix the backlight angle as shown in FIG. 15B.

In this invention, when a light source lamp has a curved shape, it is preferable to set it as the form shown to FIG. 14B, FIG. 14C. That is, (b) the light source lamp has a curved shape, the curved portion is supported by a plurality of support portions of the lamp holding member, (c) the light source lamp has a curved shape, and the curved portion is in accordance with the shape It is preferable to set it as the form covered and supported by the support part of the lamp holding member. Thereby, the fluctuation | variation in lamp | ramp attachment in the vertical and horizontal direction (X, Y-axis direction in FIG. 3B) is improved. In addition, the curved part of a light source lamp here does not show that the cross-sectional shape of a light source lamp is curved, For example, it has a curved part in the part which looked at the light source lamp from the top like a U-shaped tube. Means that. Accordingly, the fact that the curved portion of the light source lamp is covered by the support portion of the lamp holding member in its shape means that part or all of the curved portion of the light source lamp is supported by the support portion having the curved shape, for example, U In the case of the magnetic tube, as shown in Fig. 14C, part or all of the U-curve portion of the light source lamp is covered and supported by a support having a curved shape according to the U-curve portion. The curved shape of the support portion does not have to be strictly followed by the curved shape of the light source lamp. The curved shape of the support portion with respect to the curved shape of the light source lamp may be appropriately set in consideration of ease of attachment.

In this invention, you may fix a light source lamp to the support part of a lamp holding member by combining these forms (a)-(c). In these aspects, it is preferable that at least a part of the plurality of support portions be in an integrated form. In addition, since the light source lamp is held, a temperature gradient is generated to affect the deterioration of the luminance distribution, the luminance fluctuation at low temperatures, the lifespan, and the like. It is preferable to have a means for reducing the lamp support area also for the support part which supports the curved part of the light source lamp which is often arrange | positioned besides a display area. Therefore, for example, by providing projections of the shape shown in Figs. 8A and 8B in the support portions shown in Figs. 14A, 14B, and 14C, the contact area can be reduced to improve luminance characteristics, lifespan, and the like.

In the case of the above (b), the fixing portion and the fixed number of the light source lamp are not particularly limited as long as the curved portion of the light source lamp is supported by the plurality of supporting portions, but the variation of the lamp attachment in the X and Y axis directions is effectively It is desirable to set such that it is difficult to occur. For example, with respect to the form of supporting the curved portion of the lamp at two points (both sides of the top point of the curved portion), it is preferable that the supporting portions are arranged side by side substantially on the same line as shown in Fig. 16A. Further, as shown in Fig. 16B, a form in which the curved portion of the lamp is supported at three points (a vertex of the curved portion and both sides thereof) is also preferable.

In the case of the form (c), in addition to the form shown in Fig. 14C, as shown in Fig. 17, even in the form of being supported by the supporting part along one side of the curved portion of the light source lamp, deviation in the X and Y-axis directions occurs. It is difficult to do so and it can provide a thing with small assembly variation. By increasing the shape of the oblique portion in the figure, the effect of the present invention is more fully exhibited.

In the case of the above (b) or (c), the material constituting the lamp holding member is not particularly limited, and may be a soft material such as Si rubber or a material that is stronger in strength than Si rubber such as polycarbonate.

* As said light source lamp, fluorescent tubes, such as a cold cathode fluorescent tube and a hot cathode fluorescent tube, are used suitably, for example. Moreover, as a light source lamp which has a curved part, a U-shaped tube light source lamp, an S-shaped tube light source lamp, a W-shaped tube light source lamp, etc. are mentioned, for example. By using such a light source lamp, it becomes possible to reduce the power consumption in the whole lighting device by reducing the number of parts and reducing the total number of electrodes of the light source lamp. Especially, a U-shaped tube is preferable and the effect of reduction of power consumption etc. can be acquired, preventing the fall of the manufacturing yield of a light source lamp. In the case where a U-shaped tube or the like is used, the electrode of the light source lamp can be concentrated on one side, and thus, the driving circuit can be concentrated on one side. On the other hand, when an S-shaped tube or the like is used, the electrodes of the light source lamp are arranged on both sides, which is advantageous in the uniformity of optical characteristics in the emitted light of the light source lamp.

The preferred arrangement of the light source lamp is a form in which the linear portions of the light source lamp are arranged at equal intervals in parallel from the surface of light uniformity.

It is preferable that the lamp holding member is formed of an insulating resin. Moreover, as long as it can insulate the base material which arrange | positions a light source lamp and a lamp holding member, only one part may be formed of insulating resin. As the insulating resin, an elastic material having a degree of freedom such as a rubber material and capable of absorbing an impact is suitable, and in this case, the problem caused by weak impact resistance of the light source lamp can be sufficiently solved. Moreover, it is preferable to have plasticity. In the present invention, the lamp holding member and the backlight angle may be provided as separate members, and in the case where the lamp angle is made of an insulating resin such as polycarbonate, the lamp holding member and the backlight angle may be integrally formed. good.

In addition, it is preferable that the supporting portion of the lamp holding member has a notch, that is, the supporting portion supports the light source lamp in a distorted annular gripping shape having an opening at a portion thereof. Thereby, it becomes possible to attach a light source lamp after fixing a lamp holding member. In this case, in the support portion of the lamp holding member, as shown in Fig. 9A, the support portion is supported up to the upper side of the center line of the light source lamp, that is, the support range L of the upper portion of the light source lamp of the support portion exceeds 0 mm. It is preferable. Further, as shown in Fig. 9B, it is preferable that the length W of the light source lamp direction of the support portion is 10 mm or less. These forms make it possible to reduce the loss of light and achieve effective use of light while making the supporting strength of the light source lamp sufficient.

In addition, the lamp holding member is preferably provided at at least an end of the light source lamp in order to sufficiently fix the light source lamp, and more preferably, it is also provided at a portion other than the end to appropriately support the light source lamp. The lamp holding members provided in the respective portions may be made of different shapes or materials, or may be made of the same shapes or materials.

Moreover, as a preferable aspect of the said lighting apparatus for display apparatuses, the form in which one part of a light source lamp and the lamp holding member is stored in the storage frame is mentioned as an example. As a storage frame, the form arrange | positioned at the edge part of a reflecting plate is suitable, and the edge part of a light source lamp, and the lamp holding member which supports it are stored. As a preferable form of the lamp holding member stored in the storage frame, (p) the shape which fills the space part of a part of a light source lamp and a storage frame, (q) has a projection part in the storage frame side, and stores the said projection part Examples thereof include a form fitted or penetrated to the frame, (r) a form attached to and stored in the storage frame, and a combination form of (p) to (r). In the aspect of (r), as long as the lamp holding member can be fixed, it may be attached to the base material on which the storage frame is loaded.

In addition, in these aspects, it is preferable that the lamp holding member supports curved portions such as U-shaped curved portions of a light source lamp having a curved shape such as a U-shaped tube, and is preferably made of an insulating resin.

According to these aspects, it is possible to avoid the light source lamp from directly contacting a member such as a storage frame, to effectively prevent assembly variations in the manufacturing process, and to further improve the impact resistance of the light source lamp and its arrangement.

In addition, the lamp holding member provided in the display area is preferably transparent or white in order to prevent the display quality of the display device from being lowered. In addition, it is preferable that the lamp holding member provided in the display area is transparent or white and integrated with a supporting member (reinforcing supporting member) such as a cone shape. By providing such a support member (reinforcement support member), the diffusion plate or the like can be supported from the lower side together with the storage frame or the like, and the degradation of the display quality of the display device due to the warpage of the diffusion plate or the like can be prevented. The lamp holding member integrated with the supporting member (reinforcing support member) has a sufficient effect of supporting the diffusion plate and the like while preventing the display quality of the display device from being lowered due to the shading of the supporting member (reinforcing support member). It is preferable that they are formed alternately to obtain.

In the present invention, in the case of using a C ring which does not fix the backlight angle (sheet metal) to the support of the light source lamp in the display area, in particular, sufficient fixing at the end of the lamp becomes important. Therefore, when the light source lamp is not fixed to the backlight angle in the display area, particularly when the light source lamp is supported by the C ring in the display area, both end portions or one end of the light source lamp are covered by the lamp holding member as described above. The form to support, More preferably, the form to support both ends is preferable embodiment of this invention.

The lighting device for a display device of the present invention can be applied to an edge light type backlight as described above. EMBODIMENT OF THE INVENTION Hereinafter, the form suitable for the edge light type backlight is demonstrated in detail using drawing.

When applied to an edge light type backlight, in the present invention, the lamp holding member has a cavity (support), the light source lamp has a curved shape, and the curved portion is fitted into the cavity of the lamp holding member to be supported. It is preferable to make the form. Thereby, assembling fluctuation can be made very small while taking into account the lamp attachment in the assembling process. 18A and 18B show an example in which a curved portion of a light source lamp having a curved portion is supported in an edge light type backlight provided with at least one light source lamp having a curved portion. In the embodiment shown in Figs. 18A and 18B, the cavity is not formed by forming a cavity in the shape of the lamp, and the light source is used by using a lamp holding member whose inner side is the cavity (the oblique region in Figs. 18B and 18C) as shown in Fig. 18C. It is possible to mount the lamp by sliding it in the direction of the white arrow in Fig. 18B. 18A and 18B, the cavity shape of the lamp holding member is U-shaped in accordance with the lamp shape, but the cavity shape is not particularly limited as long as it can fit and support the light source lamp. In the case where the curved portion has an inverted c shape, it may be a rectangular parallelepiped shape. As the lamp holding member, for example, a rubber holder made of Si resin or the like is suitably used.

Moreover, the form which fits and supports the curved part of such a light source lamp to the cavity of a lamp holding member can be applied not only to an edge light type backlight but also a direct type backlight.

When the illumination device for a display device of the present invention is applied to an edge light type backlight, it is preferable to have a form in which a lamp holding member having a cavity is fitted into and fixed in a storage frame. In this embodiment, as shown in Fig. 20, the outer dimension (symbol W1 in Fig. 20) of the lamp holding member becomes approximately the same as the inner mold (W2 in Fig. 20) of the reflector, and is fixed by positioning and fitting them. do. Moreover, in this form, it is preferable that the lamp holding member has a projection on the storage frame side, and the projection is held by fitting or penetrating the projection to the storage frame. In this manner, the lamp holding member is fitted into the storage frame to be fixed, and at the same time, the lamp holding member is positioned with the convex portion of the lamp holding member and the concave portion of the reflector, thereby providing a backlight with little variation with high accuracy. Fig. 19A is a cross-sectional schematic diagram showing an example of a fixing form of a lamp holding member in an edge light type backlight provided with at least one light source lamp having a curved portion. In the embodiment shown in Fig. 19A, a lamp holding member 40 having a projection (fixed portion) 40 " on the upper surface (display surface side) is used, and the projection 40 " is used as a lamp reflector (containment frame) 103 Positioning is made by penetrating into the hole part of), and assembly variation is effectively suppressed. The projection 40 "may be formed at the side surface of the lamp holding member (opposite side of the light guide plate) as shown in Fig. 19B. As a preferable embodiment of the lamp holding member stored in the storage frame, as shown in Fig. 19A, In addition to the form having a projection on the side of the storage frame of (q) and fitting or penetrating the projection to the storage frame, the shape of a shape which fills a space part of the light source lamp and the storage frame of (p) above, (r And a combination form of (p) to (r), and the like, attached to the storage frame of (), etc. In these forms, fluctuation can be suppressed by effectively positioning the lamp holding member and the light source lamp.

In addition, when a straight tube light source lamp is used, as shown in Figs. 21A and 21B, a double-sided tape for fixing the GND harness line is used, but a U-shaped light source lamp is used. If possible, it is possible to abolish the double-sided tape for fixing the GND harness wire.

The present invention is also a lamp holding member used for the lighting device for the display device. Such a lamp holding member is useful as a component that constitutes a lighting device for a display device, particularly a backlight for a transmissive or semi-transmissive liquid crystal display device having a transmissive region in the liquid crystal display element. .

This invention is also a liquid crystal display device provided with the said illumination device for display devices. Such a liquid crystal display device can exhibit the effect of reducing the number of parts, reducing power consumption, preventing assembly variation in the manufacturing process, improving impact resistance and display quality, and also effectively and simply storing a light source lamp. As a transmissive or semi-transmissive liquid crystal display device having a structure that can be used, for example, it can be effectively used for a consumer image monitor, an industrial equipment monitor, and a display panel of an information portable terminal.

Since the lighting device for a display device of the present invention has the above-described configuration, since the plurality of support parts are integrated, the distance between the support parts can be easily maintained with a reduction in the number of parts, and the light source lamp can be supported at a constant interval with high accuracy. It is possible to provide a display device having excellent display quality at low cost. In addition, by supporting the curved portion of the light source lamp by the support portion, the light source lamp can be effectively supported with high accuracy, and the impact resistance of the light source lamp and its arrangement can be improved. In addition, after the light source lamp is fixed to the support of the lamp holding member, such as at least one of the fixing parts of the lamp holding member has a two-divided structure, and so on Or if the curved portion of the light source lamp is supported by a plurality of support portions of the lamp holding member, or if the curved portion is covered and supported on the support portion of the lamp holding member according to its shape, it is easy to attach the lamp in the assembling process. In addition, the display quality can be improved by improving the variation of the lamp attachment. And since the support part of a lamp holding member has a means which reduces a lamp support area, the heat spread | diffused from a light source lamp | bulb through a lamp holding member can be reduced, and the temperature distribution of a light source lamp can be made more uniform, and a lighting apparatus It becomes possible to improve the uniformity of brightness.

EMBODIMENT OF THE INVENTION Hereinafter, although the preferable form of the illuminating device for display apparatuses of this invention is demonstrated in detail based on an Example using drawing, the illuminating device for display apparatuses of this invention is not limited only to these Examples, Example For example, the form which combined these Examples may be sufficient.

Fig. 1A is a plan view schematically showing an example of a lamp holding member in which a supporting portion is integrated in the lighting device for display device of the present invention, and Fig. 1B is a cross sectional schematic view of the lamp holding member shown in Fig. 1A. Fig. 2 is a plan view schematically showing another example of the lamp holding member in which the supporting portion is integrated in the lighting device for display device of the present invention. 3A and 3B are perspective schematic views showing an example of a lamp holding member for supporting a U-shaped curved portion of a U-shaped fluorescent tube in the lighting device for a display device of the present invention. 4 is a perspective schematic view showing an example of a storage frame in the lighting device for a display device of the present invention. Fig. 5 is a sectional schematic view showing an example of a form in which a lamp holding member is attached and stored in a storage frame in the lighting device for a display device of the present invention. Fig. 6 is a cross-sectional schematic view showing one example of a form in which a lamp holding member having a shape filling a space between a storage frame and a light source lamp is stored in a storage frame in the lighting device for a display device of the present invention. Fig. 7 is a cross-sectional schematic diagram showing one example of a form in which a convex portion is penetrated and stored in a storage frame by a lamp holding member having a convex portion in the lighting device for a display device of the present invention. 8A and 8B are perspective schematic views showing one example of a lamp holding member provided with projections.

Fig. 14 is a perspective schematic view of an embodiment in which it is difficult to cause variations in the lamp attachment position in the lighting device for a display device of the present invention. Fig. 14A is a form of the lamp holding member when the lamp holding member is fixed in the lighting device for a display device after the light source lamp is fixed to the supporting portion of the lamp holding member, and Fig. 14B shows a curved portion of the light source lamp holding the lamp. 14C shows a form in which the curved portion of the light source lamp is covered and supported by the support portion of the lamp holding member according to the shape thereof.

Moreover, as a direct type liquid crystal display device comprised by the illuminating device for display apparatuses of this invention, the high reflective resin 112 is arrange | positioned to the sheet metal 111, for example, the edge part etc. were coat | covered with the insulating resin on the upper part, for example. The U-shaped tube 21 is arranged by a containment frame (lamp frame) 114, and the diffusion plate 115, the diffusion sheet, the condenser lens, the optically polarized selective reflective transmission sheet, the protection and diffusion sheet, the electromagnetic shielding on the diffusion plate 115 Examples thereof include a liquid crystal display device having a structure in which various sheets 116 such as sheets (conductive sheets, ITO sheets), liquid crystal panel elements 117, frames 118, and the like are arranged.

(First embodiment)

As shown in Fig. 1, a white lamp holding member made of an insulating resin capable of supporting a plurality of straight tube fluorescent tubes 12 in a display area of a liquid crystal display device having a lighting device behind the liquid crystal display element. (11) was provided on the highly reflective resin 112, and by this, the linear tube fluorescent tube 12 was arrange | positioned in parallel at equal intervals, and the illumination device was comprised.

In this Example and the Example shown below, as embodiment of this invention, the shape, material, number, and position of the lamp holding member which consist of insulating resin are not limited. In addition, the liquid crystal display may include either a direct backlight or an edge light backlight having a U-shaped or even U-shaped lamp.

According to such a structure, the number of parts can be reduced by supporting by the lamp holding member in which a plurality of support portions are integrated, and the light source lamps can be arranged at regular intervals with high precision, and the display quality is excellent at low cost. Can be provided.

(2nd Example)

As shown in FIG. 2, an insulating resin of a form capable of supporting a plurality of U-shaped fluorescent tubes (U-tube light source lamps) 21 in a non-display area of a liquid crystal display having a lighting device behind the liquid crystal display element. The supporting portion of the lamp holding member 22 made up of metal was provided on the sheet metal 111, whereby the U-shaped fluorescent tube 21 was arranged in parallel at equal intervals to constitute a lighting device.

According to such a structure, the number of parts can be reduced by supporting by the lamp holding member in which a plurality of support portions are integrated, and the light source lamps can be arranged at regular intervals with high precision, and the display quality is excellent at low cost. Can be provided.

(Third Embodiment)

As shown in Fig. 3, the fluorescent tube (10) in the storing portion of the U-shaped fluorescent tube 21, which is a light source lamp in the liquid crystal display apparatus having a lighting apparatus behind the liquid crystal display element, in the storage frame 41, When storing the U-shaped curved portion of the 21 in the storage frame 41, the U-curved portion of the fluorescent tube 21 is supported by the lamp holding members 31 and 33 made of an insulating resin. The lighting apparatus was comprised by storing in the.

According to such a structure, the U-curve part of a fluorescent tube can be avoided from contacting a storage frame by storing it in the storage part of a fluorescent tube through the lamp holding member which consists of insulating resin, and it is favorable for a liquid crystal display A device can be provided.

(Example 4)

As shown in Fig. 4 and Fig. 5, the fluorescent tube 21 in the storing portion of the U-shaped fluorescent tube 21, which is a light source lamp in the liquid crystal display device according to the third embodiment, in the storage frame 41. When storing the U-shaped curved portion of the fluorescent lamp 21 in the state of supporting the U-shaped curved portion of the fluorescent tube 21 by the lamp holding member 51 made of an insulating resin, the storing frame The lighting apparatus was comprised by storing in (41).

In this Example and the Example shown below, in embodiment of this invention at the time of attaching a lamp holding member, the shape, material, number, and position of the adhesive material or adhesive material which are used are not limited, and also the object of adhesion | attachment The member to be also is not limited.

According to such a configuration, the U-curved portion of the fluorescent tube can be prevented from contacting the storage frame by storing the fluorescent tube in the storage portion of the fluorescent tube via the lamp holding member made of an insulating resin. By attaching the holding member to the storage frame, the effect of standardization of assembly work in the manufacturing process and stabilization of display quality can be obtained, and a liquid crystal display device having good impact resistance, assembly accuracy, and the like can be provided.

(Example 5)

As shown in Fig. 6, the U of the fluorescent tube 21 in the storing portion of the U-shaped fluorescent tube 21, which is a light source lamp in the liquid crystal display device according to the third embodiment, in the storage frame 41. When storing the magnetic curve portion in the storage frame 41, the lamp holding member 61 made of an insulating resin of a shape filling the space portion between the storage frame 41 and the U-shaped curve portion of the fluorescent tube 21 is fluorescent. The lighting apparatus was comprised by storing in the storage frame 41 in the state which supported the U-shaped curved part of the pipe 21.

According to such a configuration, the U-curve portion of the fluorescent tube is avoided from contacting the containment frame by being supported by a lamp holding member made of an insulating resin having a shape filling the space between the containment frame and the U-curve portion of the fluorescent tube. In addition, since the U-curve portion of the fluorescent tube is fixed, the effect of standardization of the assembling operation of the liquid crystal display device and stabilization of the display quality can be obtained, and a liquid crystal display device having good impact resistance, assembly accuracy, and the like can be provided.

(Example 6)

In the storage portion of the U-shaped fluorescent tube 21, which is a light source lamp in the liquid crystal display device according to the third embodiment, in the storage frame 41, the U-shaped curved portion of the fluorescent tube 21 is stored in the storage frame 41. The U-curve portion of the fluorescent tube 21 is formed by a lamp holding member 61 made of an insulating resin that fills the space between the containment frame 41 and the U-curve portion of the fluorescent tube 21 when stored in the. In the state of being supported, the lamp holding member was attached and stored in the storage frame to constitute a lighting device.

According to such a structure, the lamp holding member which consists of insulating resin of the shape which fills the space part of the containment frame and the U curve part of a fluorescent tube is attached, and is supported by this, and the U curve part of a fluorescent tube contacts a containment frame. Since the U-curved portion of the fluorescent tube is fixed, it is possible to obtain the effect of standardizing the assembling operation of the liquid crystal display device and stabilizing the display quality, thereby providing a liquid crystal display device having good impact resistance and assembly accuracy. can do.

(Example 7)

As shown in Fig. 7, the U-shaped portion of the fluorescent tube 21 is included in the storing portion 41 of the U-shaped fluorescent tube 21, which is a light source lamp in the liquid crystal display device according to the third embodiment, in the storage frame 41. When storing the curved portion in the storage frame 41, by the lamp holding member 71 made of an insulating resin having a convex portion and a shape that fills the space portion between the storage frame 41 and the U-shaped curved portion of the fluorescent tube 21. The lighting apparatus was constructed by penetrating and storing a convex part in the storage frame 41 which provided the through-hole so that the convex part could fit in the state which supported the U-shaped curved part of the fluorescent tube 21.

In this Example and the Example shown below, as embodiment of this invention when a lamp holding member has a convex part, the shape, number, and position of a convex part and a through hole are not limited, and a through hole is provided. The member which becomes is not limited, either.

According to such a configuration, the U-curve portion of the fluorescent tube is avoided from contacting the containment frame by being supported by a lamp holding member made of an insulating resin having a shape filling the space between the containment frame and the U-curve portion of the fluorescent tube. In addition, since the U-shaped curved portion of the fluorescent tube is fixed by penetrating the convex portion, it is possible to obtain the effect of standardizing the assembling operation of the liquid crystal display device and stabilizing the display quality, and to provide excellent impact resistance and assembly accuracy. Can be provided.

(Example 8)

In the storage section of the U-shaped fluorescent tube 21, which is a light source lamp in the liquid crystal display device according to the third embodiment, in the storage frame 41, the U-shaped curved portion of the fluorescent tube 21 is stored in the storage frame 41. Of the fluorescent tube 21 by the lamp holding member 71 made of an insulating resin having a convex portion and a shape that fills the space between the storage frame 41 and the U-shaped curved portion of the fluorescent tube 21 when being stored in the The lighting apparatus was constructed by penetrating the convex part through the storage frame 41 which provided the through-hole so that the convex part could fit in the state which supported the U-shaped curved part, and attaching and storing the lamp holding member 71.

According to such a structure, the lamp holding member which consists of insulating resin of the shape which fills the space part of the containment frame and the U curve part of a fluorescent tube is attached, and is supported by this, and the U curve part of a fluorescent tube contacts a containment frame. Since the U-shaped curved portion of the fluorescent tube is fixed even by penetrating the convex portion, the effect of standardization of assembly operation of the liquid crystal display device and stabilization of display quality can be obtained, and the impact resistance and the assembly precision are good. A liquid crystal display device can be provided.

(Example 9)

As shown in Fig. 8, a white lamp holding member 81 made of an insulating resin having a plurality of protrusions 82 and 84 in a display area of a liquid crystal display device having a lighting device behind the liquid crystal display element. 83) was provided on the reflecting plate, whereby the straight tube fluorescent tube 12 was arrange | positioned in parallel at equal intervals, and the illumination device was comprised.

According to such a structure, by supporting by the support part provided with the some process, the heat which spreads from a light source lamp through a lamp holding member can be reduced, and the temperature distribution of a light source lamp can be made more uniform, It is possible to provide a liquid crystal display device having excellent display quality by improving uniformity.

(Example 10)

The tenth embodiment is an embodiment in which the variation of the lamp attachment can be improved while the lamp attachment is easy in the assembling process.

14A is an embodiment in which the lamp holding member 36 is formed of a material having a degree of freedom, such as Si rubber, to fix the lamp to the support and then to the backlight angle. This structure improves the lamp attachment variation in the Z-axis direction.

Fig. 14B is an embodiment in which variation in the X and Y axis directions is limited by fixing by the lamp holding member 37a having a plurality of support portions. The lamp fixing portion and the fixed water are not limited as long as the effects of the present invention are exhibited. In this case, the support part 37a 'of the lamp holding member is integrated.

Fig. 14C is an embodiment of the lamp holding member 38a covering the light source lamp 21 in a curved portion.

According to the present invention, a lighting device for a display device, a lamp holding member, which can reduce the number of parts, have an effect of preventing assembly variation in a manufacturing process, and further improve display quality and improve impact resistance, and A liquid crystal display device having a lighting device for a display device can be provided.

Claims (5)

delete A lighting device for a display device having a light source lamp, a lamp holding member and a backlight angle, The lamp holding member is constituted by a holding part for holding a light source lamp, and a fixing part having a structure that can be opened and fixed to a back light angle, The lighting device for the display device has a structure in which a light source lamp is held on a support portion of a lamp holding member through a fixing portion in an open state, and then the fixing portion of the lamp holding member is fixed to a backlight angle in a closed state. Lighting device for a display device characterized in that it has a. A lamp holding member having a supporting portion and a fixing portion, a light source lamp held at the supporting portion, and a backlight angle at which the fixing portion is fixed; The support portion has an annular shape, and has a structure in which a pair of end portions face each other on the backlight angle side, The fixing portion is a pair of protrusions each extending through a backlight angle from a pair of ends of the support portion, And the lamp holding member has a structure in which a fixing part is opened when installing a light source lamp in the supporting part and the fixing part is closed when fixing the lamp holding member to the backlight angle. The lamp holding member used for the illuminating device for display apparatuses of Claim 2 or 3 characterized by the above-mentioned. A liquid crystal display device comprising the lighting device for display device according to claim 2.

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