JP2012104271A - Fluorescent-tube holding parts and recovery method of fluorescent tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fluorescent-tube holding parts to be used for a liquid crystal display and a recovery method of fluorescent tubes from the liquid crystal display with the fluorescent holding parts mounted on the same, capable of safely and efficiently recovering the fluorescent tubes mounted on the liquid crystal display without damaging them.SOLUTION: The fluorescent-tube holding parts include: a backlight case locking part with a structure capable of locking to the backlight case; a plurality of the fluorescent-tube holding parts with the structure capable of holding a plurality of the fluorescent tubes in parallel; and narrow sections arranged between the fluorescent tube holding parts adjacent to each other. Also, the method of recovering the fluorescent tubes from the liquid crystal display with the fluorescent tube holding parts mounted on the same includes a process of separating backlight units from the liquid crystal display, and a process of separating the fluorescent tubes from the backlight units.

Description

  The present invention relates to a fluorescent tube holding component used in a liquid crystal display device and a method for recovering a fluorescent tube from a liquid crystal display device on which the fluorescent tube holding component is mounted.

  In recent years, with the improvement of income levels in Japan, air conditioners (air conditioners), television receivers (TVs), refrigerators, washing machines, microwave ovens and other home appliances, personal computers (PCs), word processors and other information devices, Office devices such as printers, fax machines, and other various furniture, stationery, toys, etc. are provided at a high penetration rate in ordinary households, and convenience in home life is being dramatically improved. As a result, the amount of discarded products such as these home appliances tends to increase year by year.

  In addition, general and industrial waste in general production and consumption activities in society has increased, and global environmental issues such as illegal dumping and landfill pressure have attracted attention. The shift from an economic system to a resource recycling economic system has become an important social issue.

  In response to the above situation, the Home Appliance Recycling Law was enforced in April 2001. Here, it is obliged to recycle 4 items of home appliances for air conditioners, TVs, refrigerators and washing machines (hereinafter abbreviated as “4 items of home appliances”). The re-commercialization rate of each product is 60% or more for air conditioners. The legal standard values for TV 55% or more, refrigerator 50% or more, and washing machine 50% or more have been established (in addition, the re-commodification rate standard was revised due to the revision of the law. The re-commercialization rate was raised to 60% for refrigerators and 65% for washing machines).

  Recycling of these four home appliances has progressed significantly compared to the beginning of the law enforcement, with the utmost efforts of the people concerned. Currently, not only metals such as iron, copper, and aluminum that are used in the four home appliances, but also plastics are being recycled. In televisions, a recycling technique has already been put into practical use, in which a cathode ray tube glass of a cathode ray tube display device is cut to remove an electron gun and a phosphor, and then recycled to the original glass for cathode ray tube as a glass cullet.

  When recycling materials such as metals, plastics, and glass contained in home appliances, first, the waste of home appliances composed of various parts and materials is dismantled by manual dismantling and collected for each part and material. Generally, after sorting for each material, a method of recycling as the original material is generally used.

  For example, in the case of a waste CRT television, (1) a post-cabinet removal process, (2) a wire harness removal process, (3) a control board removal process, (4) a front cabinet removal process, ( It is dismantled manually by a series of steps of 5) removing the electron gun, (6) separating the glass before and after the CRT (CRT glass), and (7) crushing the CRT glass. The collected parts / materials are sorted by material and are regenerated to the original material in a suitable manner. For example, cabinet plastics, wire harnesses and metals contained in control boards, CRT glass, etc. are recycled.

  By the way, in recent years, the demand for liquid crystal display devices including liquid crystal televisions and liquid crystal monitors has become more and more concerned with global environmental problems in recent years due to the characteristics of power saving, space saving, light weight and suitable for receiving digital broadcasting. Coupled with digitization, it is increasing rapidly. Here, “liquid crystal display device” refers to a product equipped with a liquid crystal display in the display section. Specifically, a liquid crystal television, an information display, a liquid crystal monitor for a desktop computer, a notebook computer, a mobile phone, an in-vehicle device. Also included are navigation monitors, portable information terminals, game monitors, pachinko machines, gaming machines such as slot machines. In particular, demand for large-screen LCD TVs with large LCD panels, LCD monitors for information displays and computers is increasing dramatically. Along with this, the amount of discarded liquid crystal display devices is expected to increase rapidly in the future, and in environmental activities such as recycling activities, demands for improving recyclability are increasing.

  Under such circumstances, the Home Appliance Recycling Law was applied to LCD TVs from April 2009. As a result, there is a demand for safe and appropriate processing of the collected material taken out from the liquid crystal television as well as compliance with a 50% re-commercialization rate of the liquid crystal television. In addition, liquid crystal monitors are used almost the same as liquid crystal televisions, and from this background, development of recycling technology for liquid crystal televisions and liquid crystal monitors is an urgent task.

  However, an appropriate dismantling method for recycling of liquid crystal display devices including liquid crystal televisions and liquid crystal monitors has not been established so far, and technology establishment has been delayed compared to cathode ray tube televisions and other household appliances and parts. Is the actual situation. Therefore, it is urgently required to establish a dismantling method for recycling in preparation for an increase in discarded liquid crystal display devices in the future.

  Here, liquid crystal display devices such as the above-described liquid crystal televisions and liquid crystal monitors are non-light emitting types that do not emit light themselves, and some use a fluorescent tube containing mercury as a light source. Mercury is a toxic substance for the human body, and it is desirable to collect and treat it safely so that it does not leak into the atmosphere due to breakage of the fluorescent tube during recycling.

  Fluorescent tubes used in liquid crystal display devices are smaller in size than typical fluorescent lamps used for lighting, etc., and the tube diameter is particularly small, about a few millimeters. It is desirable to take out the fluorescent tube. In particular, LCD TVs and LCD monitors have many models equipped with a large number of fluorescent tubes directly under the liquid crystal panel (directly under the fluorescent tube type), so extra care should be taken when removing the fluorescent tubes without breaking them. desired.

  In order to take out the fluorescent tube without breaking it from the liquid crystal display device, it is desirable that the dismantling operator does not touch the fluorescent tube directly. When an operator directly touches the fluorescent tube, stress is likely to be applied locally to the fluorescent tube, and it is difficult to standardize the operation manually, so that the fluorescent tube breaks due to the operator and human error often occurs. . Therefore, in order to take out the fluorescent tube without breaking it from the liquid crystal display device, the fluorescent tube is collected without touching it directly by the operator, and the work is standardized using equipment and jigs. Therefore, it is desirable to prevent the fluorescent tube from being broken due to the operator and human error.

  However, there is currently no disclosure of a method for collecting the fluorescent tube without touching it by the operator. The conventional method of removing the fluorescent tube is, for example, with the exposed state of the fluorescent tube as an upper surface, the operator directly touching it with the hand, or using a tool such as a rod, spatula, bar, etc. There is a method of separating the fluorescent tube from the engaging portion using the principle of leverage. However, in this method, since the operator or the tool itself directly contacts the fluorescent tube, the fluorescent tube may be damaged.

  Further, for example, in JP-A-2002-180146 (Patent Document 1), JP-A-2003-168370 (Patent Document 2), and JP-A-2006-212556 (Patent Document 3), a fluorescent tube is crushed. And a method for recovering the internal mercury is disclosed. However, Patent Documents 1 to 3 are based on the premise that the fluorescent tube is broken and processed, and a technique that does not break is not described.

  Further, for example, Japanese Patent Application Laid-Open No. 7-181484 (Patent Document 4) and Japanese Patent Application Laid-Open No. 7-261174 (Patent Document 5) disclose a mechanism for easily removing a fluorescent tube for a liquid crystal display device. However, this is a mechanism often used in small and medium-sized liquid crystal display devices, and is applicable to the so-called fluorescent tube direct type, in which a large number of fluorescent tubes are mounted directly under the liquid crystal panel used in most liquid crystal televisions. Can not.

  In the type directly under the fluorescent tube, the fluorescent tube is locked to the backlight housing via a holding part. In this type, the fluorescent tube can be separated from the backlight housing by cutting one end of the holding component with a cutting tool such as a nipper. However, since the fluorescent tube still has a holding part, when removing the holding part from the fluorescent tube, there is a possibility of damaging the fluorescent tube because the fluorescent tube is directly touched by hand. Further, when the fluorescent tube is stored in the storage container without removing the holding parts, the bulk volume increases due to the three-dimensional shape of the holding parts, so that efficient storage cannot be performed.

  As described above, regarding the removal of the fluorescent tube from the liquid crystal display device, in particular, in the removal of the fluorescent tube from the liquid crystal display device of the direct type of the fluorescent tube, a useful method in which the operator takes out the fluorescent tube without touching the fluorescent tube. Has not been disclosed so far.

JP 2002-180146 A JP 2003-168370 A JP 2006-212556 A JP-A-7-181484 JP-A-7-261174

  The present invention has been made to solve the above-described problems, and the object of the present invention is to allow safe and efficient recovery without damaging the fluorescent tube mounted on the liquid crystal display device. An object of the present invention is to provide a fluorescent tube holding component used in a liquid crystal display device and a method for recovering the fluorescent tube from a liquid crystal display device on which the fluorescent tube holding component is mounted.

  The fluorescent tube holding component of the present invention includes a backlight housing locking portion having a structure that can be locked to the backlight housing, and a plurality of fluorescent tube holding portions having a structure that can hold a plurality of fluorescent tubes in parallel. And a narrow portion provided between the fluorescent tube holding portions adjacent to each other.

  In the fluorescent tube holding part of the present invention, the narrow portion has a portion whose dimension in a direction parallel to the longitudinal direction of the fluorescent tube held in parallel by the fluorescent tube holding portion is more than 1 mm and less than 6 mm. Is preferred.

  In the fluorescent tube holding part of the present invention, it is preferable that at least two of the narrow portions are provided between the fluorescent tube holding portions adjacent to each other.

  The fluorescent tube holding component of the present invention described above is preferably mounted on at least one liquid crystal display device selected from a liquid crystal television and a liquid crystal monitor.

  The present invention is also a method for recovering a fluorescent tube from the liquid crystal display device on which the fluorescent tube holding component of the present invention described above is mounted, the step of separating the backlight unit from the liquid crystal display device, and the backlight unit. The present invention also provides a method of collecting a fluorescent tube including a step of separating the fluorescent tube.

  In the fluorescent tube recovery method of the present invention, it is preferable to cut the narrow portion of the fluorescent tube holding component. In this case, it is preferable to cut the narrow portion by using a jig having a scissors-like blade portion in which two blades are combined, and the narrowness is less than 20 mm with the interval between the blade edges of the two blades exceeding 4 mm. It is more preferable to cut the part.

  In the fluorescent tube recovery method of the present invention, it is preferable that after the narrow portion is cut, the fluorescent tube holding component is stored in the fluorescent tube storage container in a state where a part of the fluorescent tube holding part is attached to the fluorescent tube.

  In the above-described fluorescent tube recovery method of the present invention, the liquid crystal display device is preferably at least one selected from a liquid crystal television and a liquid crystal monitor.

  In order to take out the fluorescent tube without breaking it from the liquid crystal display device, it is desirable that the dismantling operator does not touch the fluorescent tube directly. According to the present invention, in the series of operations from taking out the backlight from the liquid crystal display device and taking out the fluorescent tube from the backlight, the fluorescent tube is not directly touched by hand. It becomes possible to suppress the occurrence of tube cracking.

  Moreover, in order not to damage the fluorescent tube, when the fluorescent tube is stored in the storage container without removing the fluorescent tube holding component, the fluorescent tube holding component has a three-dimensional shape, and the bulk volume increases, so that efficient storage cannot be performed. . According to the present invention, a part of the fluorescent tube holding part is accommodated in the fluorescent tube storage container while being attached to the fluorescent tube, but most of the fluorescent tube holding part is a scissor-like combination of two blades. Fluorescent tube storage efficiency is dramatically higher than when the fluorescent tube is stored in the storage container without removing the fluorescent tube holding parts described above by being cut off by a jig having a blade part (for example, a nipper). Can be improved.

  Therefore, according to the present invention, it is possible to obtain the effects of suppressing breakage of the fluorescent tube during disassembly of the liquid crystal display device and improving the efficiency of storing the fluorescent tube in the fluorescent tube storage container.

It is a figure which shows typically the fluorescent tube holding component 1 of a preferable example of this invention. It is a flowchart which shows a preferable example of the collection | recovery method of the fluorescent tube of this invention. It is a disassembled perspective view which shows the general structure of the liquid crystal television which is a typical example of the liquid crystal display device used suitably for the collection | recovery method of the fluorescent tube of this invention. It is sectional drawing which shows typically the positional relationship of the fluorescent tube T in a backlight unit, the 1st holding component (fluorescent tube holding component of this invention) 1 and 2nd holding components 34 and 35 which hold | maintain this. It is a top view which shows typically the positional relationship of the fluorescent tube T in a backlight unit, the 1st holding component (fluorescent tube holding component of this invention) 1 and the 2nd holding components 34 and 35 which hold | maintain this. It is a bottom view which shows typically the positional relationship of the fluorescent tube T in a backlight unit, the 1st holding component (fluorescent tube holding component of this invention) 1 and the 2nd holding components 34 and 35 which hold | maintain this. It is sectional drawing which shows typically the positional relationship of the fluorescent tube T in a backlight unit, the 1st holding component (fluorescent tube holding component of this invention) 1 and 2nd holding components 34 and 35 which hold | maintain this. It is a figure which shows a 1st holding | maintenance component isolation | separation process typically. It is a figure which shows typically the removal process of the 1st holding | maintenance component from the fluorescent tube in the collection | recovery method of the fluorescent tube of this invention. It is a figure which shows typically the cutting jig suitably used for the removal of the 1st holding | maintenance component from the fluorescent tube in the collection | recovery method of the fluorescent tube of this invention. It is a figure which shows an example of the storage container 41 which accommodates a fluorescent tube. It is a figure which shows the conventional fluorescent tube holding component 100 typically. This is the first holding component used in the reference example.

  FIG. 1 is a view schematically showing a fluorescent tube holding component 1 of a preferred example of the present invention. FIG. 12 is a view schematically showing a conventional fluorescent tube holding component 100 for comparison with the present invention. As apparent from a comparison between the present invention shown in FIG. 1 and the fluorescent tube holding component 1 shown in FIG. 12 and the conventional fluorescent tube holding component shown in FIG. 12, the fluorescent tube holding component 1 of the present invention is engaged with the backlight housing. And a plurality of fluorescent tube holding portions 2a and 2b having a structure capable of holding a plurality of fluorescent tubes in parallel, and a conventional fluorescent tube holding component. The feature of this embodiment is that it includes narrow portions 3a and 3b provided between the fluorescent tube holding portions 2a and 2b adjacent to each other, which is not included in 100.

  The narrow portions 3a and 3b are portions formed to be narrower and smaller than the other portions of the fluorescent tube holding component 1, and for example, in the longitudinal direction X of the fluorescent tube holding component 1 as in the example shown in FIG. With regard to (that is, the direction perpendicular to the longitudinal direction Y of the fluorescent tube T when the fluorescent tube T is held in parallel with the fluorescent tube holders 2a and 2b), the minimum width at the central portion of the narrow portions 3a and 3b In order to be A, the width is formed so as to be gradually reduced toward the central portion in a substantially symmetrical manner.

  The details of the fluorescent tube holding part of the present invention will be described later in connection with the fluorescent tube recovery method of the present invention. By cutting the fluorescent tube holding part 1 at the narrow portions 3a and 3b, the operator can Without touching the tube T, a part of the fluorescent tube holding component 1 (in the example shown in FIG. 1, the portion between the narrow portions 3a and 3b of the fluorescent tube holding component 1) can be removed.

  In addition, the fluorescent tube holding component 1 of the present invention is formed of a material that can be easily cut with a jig (for example, a nipper) having a scissor-like blade portion in which two blades are combined, such as a resin material such as plastic. It is preferred that Such narrow portions 3a and 3b can be formed into a preferable shape by, for example, producing a mold so as to form a shape like the narrow portions 3a and 3b and performing injection molding.

  In the narrow portions 3a and 3b of the fluorescent tube holding component 1 of the present invention, the minimum width A (the dimension in the direction parallel to the longitudinal direction Y of the fluorescent tube T described above) is more than 1 mm and less than 6 mm. Preferably there is. This is because when the width A is 1 mm or less, the strength of the fluorescent tube holding component 1 itself is lowered, and the holding ability of the fluorescent tube may be reduced. When the width A is 6 mm or more, cutting is performed. This is because the dimension of the width A may be larger than the distance between the blades of the jig, and it may be difficult to cut the holding component without the blade entering the cutting portion of the holding component. In consideration of the efficiency of the cutting work, the width A is more preferably more than 1 mm and not more than 4 mm.

  In the fluorescent tube holding part of the present invention, it is preferable that at least two narrow portions are provided between the fluorescent tube holding portions adjacent to each other. FIG. 1 shows an example in which two narrow portions 3a and 3b are formed between the fluorescent tube holding portions 2a and 2b. By cutting the two narrow portions 3a and 3b in this way, it becomes possible to reduce the size of the fluorescent tube holding component that remains attached to the fluorescent tube after cutting.

  Furthermore, in the fluorescent tube holding part of the present invention, it is preferable that the narrow portions 3a and 3b are formed in the vicinity of the fluorescent tube holding portions 2a and 2b adjacent to each other. Thereby, it is possible to further reduce the size of the fluorescent tube holding component that remains attached to the fluorescent tube after the narrow portions 3a and 3b are cut. Specifically, the linear distance B along the longitudinal direction X of the fluorescent tube holding component 1 between the fluorescent tube holding portion 2a and the narrow portion 3a and between the fluorescent tube holding portion 2b and the narrow portion b is: It is preferably greater than 1 mm and less than 10 mm.

  The present invention also provides a method for recovering the fluorescent tube from the liquid crystal display device on which the fluorescent tube holding component 1 of the present invention described above is mounted. Here, FIG. 2 is a flowchart showing a preferred example of the fluorescent tube recovery method of the present invention. The fluorescent tube recovery method of the present invention is a method of recovering a fluorescent tube mounted on a liquid crystal display device on which the fluorescent tube holding component 1 of the present invention is mounted, and the step of separating the backlight unit from the liquid crystal display device (Step S1) and a step of separating the fluorescent tube from the backlight unit (Step S6). According to the fluorescent tube recovery method of the present invention, in the fluorescent tube recovery operation of the liquid crystal display device, the operator performs the dismantling work without directly touching the fluorescent tube with the hand, so that the fluorescent tube breaks due to the operator or human error. As a result, it is possible to prevent risks (effects on human bodies, environmental pollution) due to mercury leakage and scattering.

  Here, FIG. 3 is an exploded perspective view showing a general structure of a liquid crystal television which is a typical example of a liquid crystal display device suitably used in the method for collecting a fluorescent tube of the present invention. Prior to the description of the fluorescent tube recovery method of the present invention, first, the general structure of a liquid crystal television that is preferably used in the fluorescent tube recovery method of the present invention will be described. A liquid crystal television is roughly divided into a liquid crystal panel unit 22 and a backlight unit 29. The backlight unit 29 is roughly composed of an optical system component 23 such as a diffusion plate, a diffusion sheet, and a light collecting sheet, a fluorescent tube T, a reflection sheet 25, and a backlight housing 26. More specifically, the backlight unit 29 has a structure in which a reflection sheet 25, a fluorescent tube T, and an optical system component 23 are incorporated in a backlight casing 26 that is box-shaped and opened on one side. Further, a substrate unit 27 is disposed on the back side of the backlight housing 26, and the front cabinet 21 and the back cabinet 28 are assembled as an outer frame. Note that a liquid crystal monitor used for an information display, a computer, or the like has the same structure as the liquid crystal television as shown in FIG. The fluorescent tube holding component of the present invention is preferably mounted on at least one liquid crystal display device selected from a liquid crystal television and a liquid crystal monitor, and the fluorescent tube recovery method of the present invention also includes such a method of the present invention. It is preferable to collect the fluorescent tube from at least one liquid crystal display device selected from a liquid crystal television and a liquid crystal monitor on which the fluorescent tube holding component is mounted.

  Hereinafter, the case of collecting the fluorescent tube mounted on the liquid crystal television shown in FIG. 3 will be described as an example, and the method for collecting the fluorescent tube of the present invention will be described with reference to FIG.

[1] Backlight Unit Separation Step As shown in FIG. 2, in the fluorescent tube recovery method of the present invention, first, a liquid crystal display device such as a liquid crystal television is connected to the liquid crystal panel unit 22 by the backlight unit separation step (step S1). And the backlight unit 29. The liquid crystal panel unit 22 and the backlight unit 29 are often fixed by screws, caulking, snap fit, or the like, and can be separated by a general tool. The front cabinet 21, the back cabinet 28, the board unit 27, and the like are removed prior to the backlight unit separation process, but these are often fixed by screws, caulking, snap fit, etc. Separation with a tool is possible.

  Moreover, about the liquid crystal panel unit 22, since the transparent conductive film containing the indium which is a rare metal is processed on the liquid crystal glass substrate, it is preferable to collect | recover and recycle this. Specifically, after removing the polarizing plate attached to the liquid crystal panel, the two liquid crystal glasses are divided, and the transparent conductive film containing indium processed on the liquid crystal glass surface is collected. Examples of the recovery method include, but are not limited to, wet processing using an acid and the like, mechanical processing such as polishing and blasting, and the like. Further, the recovered indium is increased in purity by using an adsorption / desorption method using an ion exchange resin, and recycled as a material for a transparent conductive film again. There is also a method of recycling indium at non-ferrous smelters.

  In the fluorescent tube recovery method of the present invention, the fluorescent tube is separated and recovered from the backlight unit 29 separated from the liquid crystal panel unit 22 as described above. FIG. 2 includes an optical system component extraction step (step S2), a backlight housing arrangement step (step S3), a first holding component separation step (step S4), and a second holding component separation step (step S5), a fluorescent tube separation step (step S6), a first holding component removal step (step S7) from the fluorescent tube, and a fluorescent tube recovery step (step S8), and then the backlight unit 29 to the fluorescent tube Although an example in which T is separated and recovered is shown, the method of recovering the fluorescent tube of the present invention is not limited to the procedure shown in FIG. 2, and the order is changed even if a part is omitted. In addition, other appropriate steps may be added as long as the effects of the present invention are not impaired, but it is particularly preferable that the steps shown in FIG.

[2] Optical System Component Extracting Step In the example shown in FIG. 2, next, the optical system component 23 is removed from the backlight unit 29 separated from the liquid crystal display device in the optical system component extracting step (step S2). Since the optical system component 23 is not fixed with a fastening component such as a screw, it can be easily removed.

[3] Backlight housing arrangement step Here, in the liquid crystal display device used in the method for collecting a fluorescent tube of the present invention, the backlight unit includes a backlight housing, an optical system component, and a fluorescent tube, The backlight case has a box shape with one side open, and is installed with the opening side down, and the fluorescent tube is connected to the first holding component and one side of the backlight case. It is preferable to have a structure in which the second holding parts are held in parallel and parallel at equal intervals. The fluorescent tube holding component 1 of the present invention described above is preferably used as the “first holding component”.

  4 to 7 schematically show the positional relationship between the fluorescent tube T and the first holding component (fluorescent tube holding component of the present invention) 1 and the second holding components 34 and 35 for holding the fluorescent tube T in the backlight unit. 4 is a cross-sectional view, FIG. 5 is a top view, FIG. 6 is a bottom view, and FIG. 7 is a cross-sectional view. In the backlight housing 26 after taking out the optical system component 23, the fluorescent tube T is normally held by the first housing component 1 in the backlight housing 26 as shown in FIGS. Both ends thereof are structured to be held by the backlight housing 26 by the second holding parts 34 and 35. As shown in FIG. 5, the first holding components 1 are intentionally randomly arranged to prevent light unevenness and the like, but the second holding components 34 and 35 are each a backlight housing. In many cases, they are regularly arranged in the same row and at the same pitch at both ends in the longitudinal direction of 26.

  In the subsequent backlight housing arrangement step (step S3), as described above, the backlight unit after the removal of the optical system parts is arranged so that the opening of the backlight housing faces downward. Accordingly, the first holding component separation is continued by arranging as shown in FIGS. 4 and 5 so that the opening portion of the backlight housing 26 having a box shape with one surface opened is located downward. The step (step S4), the second holding component separation step (step S5), and the fluorescent tube separation step (step S6) can be performed smoothly.

[4] First Holding Component Separation Step In the subsequent first holding component separation step (step S4), the first holding component is released from the backlight unit arranged so that the opening of the backlight housing 26 is located downward. Separate the parts. Here, FIG. 8 is a diagram schematically showing the first holding component separating step. In the first holding component separating step, as shown in FIG. 8, the first holding component 1 is separated from the backlight unit arranged so that the opening of the backlight housing 26 is located downward. In the fluorescent tube collecting method of the present invention, the end of the backlight housing locking portion 4 having a structure that can be locked with the backlight housing 26 of the first holding component (fluorescent tube holding component of the present invention) 1. It is preferable to separate the backlight unit from the backlight unit 26 by cutting the portion and removing the holding from the backlight housing 26. Examples of the means for cutting the end of the backlight housing locking portion 4 of the first holding component 1 include a general cutting tool such as a nipper and an automatic tool such as an air nipper. There is no limitation.

[5] Second Holding Component Separation Step Next, in the second holding component separation step (step S5), the second holding component is separated from the backlight unit after the first holding component is separated. The material of the second holding parts 34 and 35 is often rubber or resin, and these are not fixed with any fastening parts, for example, and can be removed from the backlight housing 26 by applying pressure from above. it can. The means for removing the second holding parts 34 and 35 is not particularly limited, and manual operation may be performed, or a general tool such as a flat-blade screwdriver may be used to add from above the second holding parts 34 and 35. You may press. Alternatively, a special jig or the like may be produced and pressed from above.

[6] Fluorescent tube separation step The first holding component (fluorescent tube holding component of the present invention) 1 after the first holding component separation step (step S4) and the second holding component separation step (step S5) described above. As a result of the separation of the second holding components 34 and 35 from the backlight housing 26, the fluorescent tube T is separated from the backlight housing 26 (step S6). Thereby, the operator or the tool itself can take out the fluorescent tube T from the backlight housing 26 without directly touching the fluorescent tube T.

[7] First Holding Component Removal Step from Fluorescent Tube Next, the first holding component (fluorescent tube holding component of the present invention) 1 is removed from the fluorescent tube T taken out from the backlight housing 26 (step) S7). Conventionally, in this process, the first holding component (conventional fluorescent tube holding component 100) having a structure as shown in FIG. By the way, the first holding part is a small part of several centimeters in size, and the worker wears a thick glove for ensuring safety during dismantling work, and the parts are so fine that they can be removed directly by hand. Work is very difficult and time consuming. Further, since the fluorescent tube T is directly touched with such a fine work, stress is easily applied to the fluorescent tube, and the fluorescent tube is often broken due to an operator or human error.

  FIGS. 9A and 9B show the first holding from the fluorescent tube when the fluorescent tube holding component 1 of the present invention collects the fluorescent tube T from the liquid crystal display device mounted as the first holding component. It is a figure which shows the removal method of components typically. As shown in FIG. 1, the fluorescent tube holding component 1 of the present invention mounted on the liquid crystal display device of the present invention includes narrow portions 3a and 3b provided between the fluorescent tube holding portions 2a and 2b adjacent to each other. . By cutting the narrow portions 3a and 3b, a part of the fluorescent tube holding component 1 (that is, the portion 11 between the narrow portions 3a and 3b) can be removed without touching the fluorescent tube T. Since the first holding part used conventionally does not have such a narrow portion, it cannot be cut with the above cutting jig. Therefore, in order to remove the first holding component from the fluorescent tube, the operator must directly remove it by hand.

  FIG. 10 is a diagram schematically showing a cutting jig suitably used for removing the first holding component from the fluorescent tube in the fluorescent tube recovery method of the present invention. For removing the first holding component 1 from the fluorescent tube T described above, a cutting tool (for example, a nipper) having a scissor-like blade portion in which two blades 36 and 37 are combined as shown in FIG. Are preferably used. Here, it is preferable that the space | interval C of the blade edge | tip of the two blades 36 and 37 of the cutting jig | tool at the time of cut | disconnecting the area | region A exceeds 4 mm and is less than 20 mm. When the blade edge interval C is 4 mm or less, the width A of the narrow portion 3 and 3b may be larger than the blade edge interval, so the blade does not enter the cutting portion of the holding component and cuts the holding component. It is because there exists a possibility that it may become difficult. In addition, when the interval between the blade edges is 20 mm or more, the interval is too wide, and it is difficult to aim at the cutting portion, and workability is not good.

  Further, as described above, in the first holding component (the fluorescent tube holding component of the present invention), the narrow portions 3a and 3b are formed in the vicinity of the fluorescent tube holding portions 2a and 2b adjacent to each other. There is an advantage that the size of the parts 12 and 13 of the first holding parts remaining attached to the fluorescent tube after cutting the narrow portions 3a and 3b can be reduced.

[8] Fluorescent tube recovery step Next, in the fluorescent tube recovery step (step S7), the fluorescent tube T (parts 12 and 13 of the first holding parts attached) separated from the backlight housing 26 is recovered. Store in. There is no particular limitation on the method of storing the fluorescent tube in the collection container. For example, a collection container 41 as schematically shown in FIG. 11 may be installed below the backlight housing, and the fluorescent tube may be directly stored in the collection container without any intervention. Moreover, you may accommodate a fluorescent tube in the collection container 41 using automatic conveyance apparatuses like a belt conveyor. In addition, if the fluorescent tube is safely separated from the backlight housing, the fluorescent tube will be extremely low in damage. Therefore, if you want to reduce costs as much as possible, the operator can store the separated fluorescent tube directly in the collection container. Also good. In addition, the collection container of a fluorescent tube can use a conventionally well-known thing, For example, a lightweight container like the product made from a plastic corrugated board can be used.

  Further, in this process, in the shape of the conventional first holding component (the conventional fluorescent tube holding component 100 shown in FIG. 12), the operator does not remove the first holding component of the fluorescent tube by directly touching with the hand. Since there is a high possibility that the fluorescent tube is damaged, there is a case in which the first holding component is not removed and the fluorescent tube is stored in the collection container with the first holding component attached to the fluorescent tube. However, when the fluorescent tube is stored in the storage container without removing the first holding component, since the holding component has a three-dimensional shape, the bulk volume increases correspondingly, and efficient storage becomes impossible.

  Even in such a case, since the fluorescent tube holding component 1 of the present invention is mounted on the liquid crystal display device as the first holding component, the first holding component can be easily cut as described above. Compared with the case where the first holding component is not removed, the storage rate of the fluorescent tube is greatly improved. Further, as described above, since the fluorescent tube can be collected and stored without the operator directly touching the fluorescent tube, the fluorescent tube is not cracked due to the operator or human error. As described above, according to the present invention, the housing ratio of the fluorescent tube is dramatically improved as compared with the case where the first holding component as in the prior art is not removed. Therefore, it is possible to construct a safe and efficient process for recovering the fluorescent tube of the liquid crystal display device without risk of mercury scattering / leakage (influence on human body, environmental pollution).

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

<Example 1>
100 fluorescent tube holding parts for the liquid crystal display device of the present invention were attached to 100 fluorescent tubes used in a 32-inch liquid crystal television. The minimum width A of the central portion of the narrow portions 3a and 3b of the fluorescent tube holding parts used this time was 3 mm (note that the narrow portions were provided at two locations for each fluorescent tube holding component). And narrow part 3a, 3b was cut | disconnected using the air nipper (Victor VA-30 blade pitch 6mm made from Hanazono tool), and fluorescent tubes were collect | recovered.

<Comparative Example 1>
100 fluorescent tube holding parts for a liquid crystal display device conventionally used as shown in FIG. 12 are attached to 100 fluorescent tubes used in a 32-inch liquid crystal television (of the fluorescent tube holding part 100). The width D in the direction perpendicular to the longitudinal direction was 8 mm). Then, the fluorescent tube holding part was directly contacted and separated from the fluorescent tube by hand to collect the fluorescent tube.

  Table 1 shows the results of examining the fluorescent tube breakage after the working of the example and comparative example 1.

  As shown in Table 1, in Comparative Example 1, four fluorescent tubes were damaged, whereas in Example 1, the fluorescent tubes were not damaged.

<Example 2>
Next, the fluorescent tube collected in Example 1 is attached to a fluorescent tube holding container as shown in FIG. 11 with a part of the fluorescent tube holding part (20 cm long × 20 cm wide × 100 cm long, plastic). Stored in cardboard).

<Comparative example 2>
Since the fluorescent tube was damaged in Comparative Example 1, the fluorescent tube of Comparative Example 1 was stored in the above-described fluorescent tube storage container with the conventional fluorescent tube holding parts attached, so that the fluorescent tube was not damaged.

<Reference Example 1>
Except for using a fluorescent tube holding component 50 provided with only one narrow portion 3 (width A: 3 mm) as shown in FIG.

  Table 2 shows the results of examining the number of fluorescent tubes stored in Example 2, Comparative Example 2, and Reference Example 1.

  As shown in Table 2, in Example 2, all 100 fluorescent tubes could be accommodated, whereas in Comparative Example 2, only 55 fluorescent tubes could be accommodated in Reference Example 1. could not.

<Experimental example 1>
Samples having a minimum width A of 1 mm, 3 mm, and 6 mm at the central portions of the narrow portions 3a and 3b of the fluorescent tube holding parts of the present invention are respectively prepared, and used in the above-described 32-inch liquid crystal television. Attached to. Then, the fluorescent tube holding component for liquid crystal display devices was cut | disconnected using the air nipper (Victor VA-50 blade pitch 8mm made from Hanazono tool), and cutting workability | operativity was evaluated. The results are shown in Table 3.

  As shown in Table 3, the fluorescent tube could be fixed without problems when the width A, which is the minimum of the central portion in the narrow portions 3a and 3b, was 3 mm and 6 mm, but the narrow portions 3a and 3b were fluorescent tubes in the 1 mm type. The 1 mm type evaluation was interrupted due to the occurrence of a problem that twisting occurred due to its own weight, and the attached fluorescent tube could not be fixed stably. In addition, the 3 mm type was cut 50 times and could be cut without any problem, but the 6 mm type was cut 50 times and failed to cut 3 times.

<Example 3>
Next, the fluorescent tube holding parts used in Experimental Example 1 are prepared with a minimum width A of 3 mm at the narrow portions 3a and 3b, and the pitch between the air nipper blades is changed to 4 mm, 10 mm, and 20 mm. The cutting workability was evaluated in the same manner as in Experimental Example 1. The results are shown in Table 4.

  As shown in Table 4, when the air nipper blade pitch is 4 mm, the cutting operation is performed 50 times, the failure is 2 times, and when the blade pitch is 10 mm, the cutting operation is performed 50 times and there is no failure. When the interval pitch was 20 mm, the cutting operation was performed 50 times and the result was 3 failures.

  It should be considered that the embodiments and experimental examples disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Fluorescent tube holding | maintenance part, 2a, 2b Fluorescent tube holding | maintenance part, 3a, 3b Narrow part, T fluorescent tube, 4 Backlight housing | casing latching | locking part, 21 Table cabinet, 22 Liquid crystal panel unit, 23 Optical system part, 25 Reflection sheet , 26 Backlight housing, 27 Substrate unit, 28 Back cabinet, 29 Backlight unit, 34, 35 Second holding part, 36, 37 Two blades of cutting jig, 41 Collection container.

Claims (10)

A backlight housing locking portion having a structure that can be locked with the backlight housing;
A plurality of fluorescent tube holders having a structure capable of holding a plurality of fluorescent tubes in parallel;
A fluorescent tube holding component comprising a narrow portion provided between adjacent fluorescent tube holding portions.   2. The fluorescent tube holder according to claim 1, wherein the narrow portion has a portion whose dimension in a direction parallel to a longitudinal direction of the fluorescent tube held in parallel by the fluorescent tube holder is more than 1 mm and less than 6 mm. parts.   The fluorescent tube holding component according to claim 1, wherein at least two of the narrow portions are provided between the fluorescent tube holding portions adjacent to each other.   The fluorescent tube holding component according to any one of claims 1 to 3, which is mounted on at least one liquid crystal display device selected from a liquid crystal television and a liquid crystal monitor. A method of recovering a fluorescent tube from a liquid crystal display device on which the fluorescent tube holding component according to claim 1 is mounted,
Separating the backlight unit from the liquid crystal display device;
Separating the fluorescent tube from the backlight unit.   The method for collecting a fluorescent tube according to claim 5, wherein the narrow portion of the fluorescent tube holding part is cut.   The method for collecting a fluorescent tube according to claim 6, wherein the narrow portion is cut using a jig having a scissors-like blade portion in which two blades are combined.   The method for collecting a fluorescent tube according to claim 7, wherein the narrow portion is cut when an interval between the blade edges of the two blades exceeds 4 mm and less than 20 mm.   The method for recovering a fluorescent tube according to any one of claims 5 to 8, wherein after the narrow portion is cut, the fluorescent tube holding component is stored in a fluorescent tube storage container in a state where a part of the fluorescent tube holding part is attached to the fluorescent tube.   The method for recovering a fluorescent tube according to claim 5, wherein the liquid crystal display device is at least one selected from a liquid crystal television and a liquid crystal monitor.