TW200820311A - Apparatus for coating fluorescent layer - Google Patents

Abstract

The present invention provides an apparatus for coating a fluorescent layer. The invented apparatus includes: a storage device for storing a fluorescent liquid used for coating the inner wall of glass tubes; a saturation vapor supply device for supplying vapor to the storage device in order to apply pressure on the liquid surface of the fluorescent liquid in the storage device so as to prevent vaporization of the fluorescent liquid and ingress of external moisture or air. The invented apparatus fills the storage device with saturation vapor in order to apply pressure on the liquid surface of the fluorescent liquid stored therein so as to prevent vaporization of the fluorescent liquid and maintain the viscosity of fluorescent liquid stable, thereby increasing the quality of coating in the fluorescent tubes.

Description

200820311 IX. The invention relates to a fluorescent lamp coating device, and more particularly to a method for preventing evaporation of a fluorescent liquid by using a strip> flying pressure, thereby stably maintaining a coating firefly. A fluorescent lamp coating device for the viscosity and physical properties of a liquid liquid. [Prior Art] Generally, a fluorescent lamp is roughly classified into a CCFL: c〇id Cathode Flu〇rescent Lamp and an External Electrode Fluorescent Lamp (EEFL), the external electrode Compared with cold cathode fluorescent lamps, fluorescent lamps have advantages such as high luminous efficiency, long life, and low power consumption, and can be made into compact fluorescent lamps. Therefore, backlights for LCDs have recently been widely used. The manufacturing process of the external electrode fluorescent lamp includes a step of applying a fluorescent liquid to the inner wall of the glass tube for manufacturing the fluorescent lamp, and a step of baking the applied fluorescent liquid, 'injecting the luminescent gas into the inside of the glass tube and Mercury process; a process of sealing a glass tube in the state of illuminating gas and mercury; and a step of applying an electrode to both ends of the sealed glass tube. In particular, the glare liquid coating step is an important step for determining the luminous efficiency of the glory light. # When the camping light is activated, the electrons emit a discharge, causing electrons and mercury atoms to collide with each other to emit ultraviolet rays. In order to make the violet turn into visible light, a fluorescent liquid is applied to the inner wall of the glass tube to activate the ultraviolet light. The process of applying the fluorescent liquid comprises the steps of: coating a glare solution on the inner wall of the glass tube; and thermally drying the glare solution coated on the inner wall of the glass tube. Earth 6 200820311

Further, the coating refractory liquid used in the coating step is a liquid mixture prepared by adding a binder and a binder to a camping material and mixing it with a predetermined amount of an organic solvent. Solvent - Butyl-Acetate 〇 X

In the coating step, when the operation of applying the glare liquid is performed, the bottom of the glass tube placed in an upright state is immersed in a storage tank in which the coating fluorescent liquid is stored, and the glass tube is changed by The internal pressure is applied to cause the coating fluorescent liquid to flow into the inside of the glass tube or to be discharged outward, whereby the coating is performed. However, when the lamp tube is coated in the above manner, if the storage tank storing the glory liquid is exposed to the air towel, the evaporation of the fluorescent liquid or the moisture in the atmosphere may enter the fluorescent liquid towel due to the μ light (four) viscosity silk. keep it steady. Moreover, when manufacturing a fluorescent lamp, the operator needs to visually observe the reduction of the fluorescent liquid in the storage tank' and after the confirmation of the fluorescent liquid reduction state, the reduced fluorescent liquid needs to be supplemented by manual operation, and the manufacturing process is thereby observed. The content of the invention is complicated by the above problems. The purpose of the present invention is to provide a fluorescent enamel coating device which maintains (4) of the storage tank at a predetermined pressure or more to prevent evaporation of the liquid liquid and external The flow of air or moisture keeps the physical properties of the glory liquid stable. Another purpose of the present invention is to provide a fluorescent liquid coating of a fluorescent lamp, which uses gravity (4) to automatically supply the fluorescent liquid to the storage tank, thereby automatically replenishing the reduced fluorescent liquid. The present invention provides a fluorescent liquid coating of a fluorescent lamp 7 200820311, which comprises: a storage device for storing a saturated steam supply for coating the inner wall of a glass tube, and a liquid preparation solution And applying a m to the liquid surface of the fluorescent liquid stored in the storage device to prevent evaporation of the glare liquid and inflow of external moisture or air. The firefly of the preferred embodiment of the present invention has the following advantages. Zhiguang La's fluorescein liquid coating device

Light, night 3 p fills the storage tank with saturated steam, so as to pressurize the stored liquid level of the liquid, thus preventing the fluorescent liquid from tombing, #f1保胜#~/From the hair to make the baby fluorescent liquid The viscosity/, and palpitations can further improve the coating quality of the glass tube. Open the door:: 'In the case of maintaining a certain force inside the hall, pass the second. The guide holes and exhaust pipes of the cattle discharge saturated steam to prevent external moisture or air from flowing into the storage tank, thereby making the viscosity of the fluorescent liquid

%set. T = the first one, connecting the storage tank storing the fluorescent liquid and the other storage tank disposed above the storage t position, so that the fluorescent liquid is automatically supplied under the action of gravity, thereby automatically supplementing the reduced fluorescence liquid. [Embodiment] Hereinafter, a configuration of a fluorescent lamp coating apparatus according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the fluorescent lamp coating apparatus provided by the present invention comprises: a chamber c; a loading box 6 for carrying a glass tube G combined with the chamber c; a negative pressure generating device M1, It is connected to the chamber c, and generates a negative pressure by changing the internal pressure of the chamber C to apply a fluorescent liquid to the inner wall of the glass tube G 200820311; the drying device m2, The chambers are connected, and a dry gas is supplied into the chamber C to dry the fluorescent liquid inside the glass tube G; and a storage device for storing the light = glass

In order to supply the fluorescent liquid to the glass tube G portion when driving the negative pressure generating device M1; and a saturated steam supply device connected to the storage eating device and supplying saturated steam to the storage device, Thereby, the inside of the apparatus is maintained at a pressure of a predetermined size or more, and α prevents the viscosity of the fluorescent liquid from changing due to evaporation of the glare liquid or inflow of moisture. In the fluorescent lamp coating apparatus of the above configuration, the chamber c is formed in the hexahedron-shaped case 2 to be small, and a sealed space is formed, and a pressure difference is generated to form inside the plurality of glass tubes G. For coating the fluorescent liquid W, the case 2 is mounted above the holder 4, and the loading case 6 may be disposed below the holder 4. Further, a plurality of communication holes H1 are formed in the bottom surface of the chamber to c, and the upper end of the glass tube G is inserted into the communication hole H1 to allow the inside of the glass tube G to communicate with the chamber c. In order to apply and dry the phosphor W, the chamber c is connected to the negative pressure generating means M1 and the drying means m2. ^ As shown in FIG. 1 and FIG. 3, a first crucible and a first crucible 2 are disposed on the chamber C, and the first crucible 1 is connected to the negative pressure generating device ,1, thereby making the chamber c creates a pressure difference inside. The negative pressure generating device M1 may include a vacuum dish so that a negative pressure is generated through the first connecting pipe A1 when the vacuum pump is driven. 9 200820311 Therefore, in the case of driving the negative pressure generating device M1, a negative pressure is generated inside the chamber C, and a negative pressure is also generated inside the glass tube, so that the fluorescent liquid of the storage device flows into the inside of the glass tube G. . Further, the second crucible P2 of the chamber to C is connected to the drying device M2, so that the inside of the glass tube G coated with the fluorescent liquid can be dried.

That is, as shown in Figs. 1 and 4, the dry farm M2 preferably includes a blower. The drying device M2 is connected to the second crucible P2 via the second connecting pipe A2, so that when the blower is operated, the drying gas heated to about 150 degrees is supplied to the inside of the chamber c, so that the glass can be dried.

The inside of the glass tube G. The plurality of glass tubes G are separated from the loading box 6 and are respectively installed above and below and separated by __ (four)

The upper tray (1) and the lower tray B2, and the fixing rod B connecting the upper tray B tray B2. The upper tray B1 and the lower_B2 are respectively formed with fixing hole holders, and the plurality of glass tubes g can be inserted into the fixing holes H2 in an upright state. Wherein: the plurality of fixing holes m (four) columns are identical to the arrangement of the C:: faces: the communication holes H1, so that when the

In the case of the phase body 2, the female clothes are inserted into the communication holes H1 at the upper ends of the respective glass tubes G.疋W 11 to L or more, the glass tube is taken as an example. </ br> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; Having 10 200820311 placed on the elevator 8 on the inside of the bracket 4, the squatting and hoisting of the lifter 8 is carried out up and down, so that the lift can be used to move up and down, &lt;丄π is now β1 detachably mounted to the bottom surface of the casing 2. That is, the elevator 8 can use a plurality of gas reds L1 mounted on the bottom surface of the holder 4. The elevator 8 can be lifted and lowered by the piston rod of the cylinder, thereby driving the loading box 6 to move up and down. In addition, the storage device for storing and coating the glass glaze G rearward Li Congxuan t &gt; | & (the inner wall of the alpha liquid) includes: for storing the firefly to be sucked into the glass tube G a first storage tank 10 of light and liquid, and a second storage tank 16 connected to the first storage tank 10 and automatically supplying the fluorescent liquid to the first storage tank 10 under the force of gravity. In the storage device of the structure, the inside of the first storage tank is provided with a predetermined size space for storing the fluorescent liquid. Moreover, the bottom of the first storage tank 1 is equipped with two cylinders 2, The first storage tank 10 is raised when the cylinder L2 is driven, so that the lower ends of the glass tubes G carried on the chamber c are immersed in the coating fluorescent In the liquid w. The upper portion of the first storage tank 1 is mounted with an opening and closing member that opens or closes the action of inserting the lower end of the glass bowl G into the first storage tank. That is, the opening and closing member includes The upper opening and closing plate D1 and the lower opening and closing plate D2 disposed above and below, and the upper opening and closing plate D1 and the lower opening In the closing plate D2, the upper opening and closing plate D1 is connected to the cylinder L4. Further, the upper opening and closing plate D1 and the lower opening and closing plate D2 are respectively formed with a plurality of guide holes 14. 11 200820311 According to this, with the cylinder L4 The drive of the grandfather/tongue base, the upper open plate D1 moves in one direction, and opens and closes... When the guide holes 14 of the upper and lower opening and closing plates D1 and the lower opening and closing plate D2 are aligned, they pass through the double ##过所The opening 14 can insert the glass (four) w into the inside of the storage tank 1 , and when the upper opening and closing plate D1 and the lower opening and closing opening D2 are staggered, the first opening and closing tray storage tank 1 will be sealed. This structure opens the storage tank 10 only when the sounding liquid W is applied, so that a copper raft of the glass tubes G and the s side sill pass through the guide holes 14 into the interior of a storage tank 10. So a catty Dian

The fluorescent liquid immersion coating in the storage tank 10 is stored in a sealed state. In addition, the first storage; the upper portion of the I# sub-tank 10 is connected to the exhaust pipe τ, and the saturated steam filled into the first storage tank 10 can be discharged outward. This will be detailed later. And the second storage tank is internally formed with a second storage tank and the fluorescent liquid supply tube is connected. At this time, the first storage tank 10 is provided. 6 The clothes are located at a position south of the first storage tank 10, and the space can thus store the fluorescent liquid. 16, the lower part of which is connected with the fluorescent liquid supply pipe 1 , 〃 a side wall of the first storage tank 1 相 a storage tank 16 is installed at a higher position than the first storage prisoner *, the pass is stored in the first The fluorescent liquid in the tank 10 is reduced, and the liquid of the sacred umbrella door stored in the second storage tank 16 is supplied by gravity to the liquid storage tube T1 to the other storage tank. 1〇 is connected to the saturated steam supply device, so that the inside of the first storage tank 10 can maintain a certain pressure. The saturated steam supply device white-I includes a condition generating tank 18 and a solvent supply 12 200820311. The steam generating tank 18 is connected to the first storage tank to supply saturated steam, thereby making the first A storage tank 1 is maintained at a certain pressure, and the solvent supply tank 20 is provided with a solvent in the steam generating tank 18 to replenish the consumed solvent. In the saturated steam supply device of such a structure, the solvent supply tank 2 储存 stores a solvent therein and preferably stores an organic solvent. Moreover, the stored organic solvent is supplied into the steam generating tank 18 through the solvent supply pipe T3. The black vapor generating tank 18 has a space formed therein, so that the organic solvent supplied from the solvent supply tank 20 can be stored. Further, the steam generating tank 18 is connected to the air injection pipe 22, so that air can be injected into the inside through the pipe. At this time, the inside of the steam generating tank 18 is in a saturated vapor pressure state. That is, when the vapor evaporated from the organic solvent reaches a certain limit, the vapor is no longer in equilibrium. In this state, by injecting air into the inside of the steam generating tank 18 through the air injection pipe 22, the saturated vapor pressure of the organic solvent is made larger than the large pressure so that the organic solvent in the equilibrium state regenerates steam. The saturated steam generated by the above process is supplied into the first storage tank 10 through the steam supply pipe. Here, in order to test the pressure of the injected air passing through the air injection tube 22, a pressure gauge can be mounted on the air injection tube. The saturated steam supplied to the first storage tank 10 is filled with the first storage tank 1G # upper portion in which the fluorescent liquid is stored, and is saturated, thereby applying a certain pressure to the optical liquid. 13 i 200820311 /, , u The saturated steam prevents the evaporation of the fluorescent liquid inside the first storage tank 1 , thereby preventing the viscosity of the fluorescent liquid from changing. Further, the internal pressure of the first storage tank is maintained above a predetermined size by the supplied saturated steam, and preferably the pressure is greater than the pressure. Therefore, the saturated steam passes through the opening and closing member m and the pilot hole 14 of the lower opening and closing member D2 and the exhaust pipe after being subjected to a pressure greater than atmospheric pressure. In this case, since the moisture or air in the atmosphere can be prevented from flowing into the first storage tank through the guide holes 14 of the upper opening and closing member m and the lower opening and closing member D2, the viscosity of the fluorescent liquid can be kept stable. Here, the upper portion of the first storage tank 10 is provided with an exhaust pipe τ, so that saturated steam of the same pressure as the saturated steam supplied to the first storage tank 10 is discharged to the outside through the exhaust pipe. Therefore, the saturated steam filled in the inside of the first storage tank 10 can maintain the pressure of the pre-exhaustion, and the same amount of gas as the saturated therapeutic steam newly supplied to the first storage tank 10 is discharged through the exhaust pipe τ, thereby preventing the first Filling a storage tank 10 with a predetermined amount or more of saturated steam causes the density to be too high. Further, the steam supply pipe 2 or the phosphor supply pipe T1 is provided with a flow control valve such as a sling structure to control the supply gas or glory flow. As described above, in the process of applying the fluorescent liquid to the inner wall of the glass tube and drying it, the viscosity of the glare solution is kept stable by preventing evaporation of the fluorescent liquid and the inflow of moisture or air, thereby improving the application of the fluorescent liquid. effectiveness. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the operation of the preferred embodiment of the fluorescent lamp coating apparatus 14 200820311 of the present invention will be described in detail with reference to the accompanying drawings. As shown in Fig. 1 and Fig. 2, the coating liquid is applied to the inner wall of the six-dimensional G and the inner wall of the first storage tank. 4, the pre-quantity of the fluorescent light, that is, the gravity is applied through the fluorescent liquid supply tube τ, the second storage tank 16 (four) the optical liquid is supplied to the first storage tank 1G: / at this time, with the first storage tank 10 The connected vapor is stored in an organic solvent supplied from the solvent storage tank 20, and is stored in a state of pressure. Further, saturated steam is maintained. In this state, air is injected into the steam generating tank 4 through the air injection pipe 22, so that the saturated vapor pressure stored in the helium vapor is greater than atmospheric pressure. The organic solvent in 18 is so that the organic solvent stored in the steam generating tank 18 produces a saturated tomb and the saturated steam passes through the steam supply pipe 2 storage tank 10. The saturated steam supplied to the first storage tank 10 fills the upper space of the liquid level of the fluorescent liquid to a saturated state, thereby applying a certain pressure to the liquid surface. Therefore, the evaporation of the fluorescent liquid can suppress the evaporation of the fluorescent liquid, and the viscosity of the fluorescent liquid can be prevented from being lowered even after long-term storage. Further, the same amount of gas as the f-steam newly supplied to the first storage tank is discharged through the exhaust pipe, thereby preventing a certain amount or more of saturated steam from being filled in the first storage tank 10, resulting in an excessively high density. In this state, a plurality of glass tubes G are carried on the loading cassette 6, and the loading cassette 6 carrying the glass tube G is raised by the elevator 8, so that the upper end of the glass 15 200820311 BG passes through the communication hole 111 and the cavity of the chamber c. Room c is connected. As described above, the first storage tank 10 that is supplying saturated steam is raised by the cylinder L2, so that the lower end of the glass f G is inserted into the inside of the first storage tank through the guide holes 14 of the upper opening and closing member D1 and the lower opening and closing member D2. . At this time, external moisture or air may flow into the first storage tank 10 through the guide holes 14 of the upper closing member 〇1 and the lower opening and closing member D2 and the exhaust pipe. However, at this time, since the internal pressure of the first storage tank 10 is greater than the atmospheric pressure, the saturated steam is discharged to the outside through the pilot hole and the exhaust pipe τ of the upper opening and closing member D1 and the lower opening and closing member D2, thereby preventing moisture in the atmosphere or Air flows into the storage tank 10, so that the viscosity of the fluorescent liquid remains stable. As shown in Fig. 4, in a state where one end portion of the plurality of glass tubes G is fixed to the chamber c, a negative pressure is generated in the chamber c by driving the negative pressure generating means M1. ^ 1 〇 fluorescent liquid, under negative pressure, can be coated on the inner wall of the glass tube

Therefore, it is stored in the inside of each of the glass tubes G by the storage of the first storage tank, and the fluorescent liquid W is applied. As shown in Fig. 1, the inside of the drying unit is driven to dry. After the application of the fluorescent liquid, the hot air is supplied to the glass tube as shown in the figure M2', and the drying gas is supplied to the inside of the glass tube G through the second crucible P2 connected to the chamber t C, thereby The glass tube G is dried. &quot; Through the above process, the glare solution can be applied to the inner wall of the glass fG and enters 16 200820311. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the overall structure of a preferred embodiment of the phosphor coating apparatus of the present invention. Fig. 2 is a view showing a state in which a phosphor is applied to the inner wall of the glass tube by the phosphor coating device shown in Fig. 1. Fig. 3 is a schematic view for explaining the action of the chamber for coating a phosphor solution of the phosphor coating apparatus shown in Fig. 1. Fig. 4 is a schematic view for explaining the drying process of the phosphor coating apparatus shown in Fig. 1. [Main component symbol description] 2 Case 4 Bracket 6 Load box 10 First storage tank 14 Guide hole 16 Second storage tank 18 Steam generation tank 20 Solvent supply tank 22 Air injection pipe A1 First connection pipe A2 Second connection pipe B1 Tray B2 Lower Tray B Fixing rod 17 200820311 c Chamber D1 Upper opening and closing plate D2 Lower opening and closing plate G Glass tube HI Connecting hole H2 Fixing hole LI, L2, L4 Cylinder Ml Second connecting pipe M2 Drying device PI First P2 Second埠T1 Fluorescent liquid supply pipe T2 Steam supply pipe T3 Solvent supply pipe T Exhaust pipe w Fluorescent liquid 18

Claims (1)

200820311 X. Shenyi Patent Fan: =·-------------------------------------------------------------------------------------- a storage=supply device for supplying steam to the storage device, :&amp; applying a dust force to the liquid surface of the fluorescent liquid in the storage device, preventing evaporation of the fluorescent liquid and external moisture or air Inflow. The storage device includes a first storage tank for impregnating the glass tube, and the first storage tank, which is coated with the working solution of the Luguang Building, which is specifically described in the scope of the disclosure. The connection slot is connected in the uncovering slot, and is disposed at a position where the storage tank is in a state of being stored, thereby automatically supplying the second storage tank of the light-receiving liquid to the younger-storage tank under the action of the heavy force. 3. The fluorescent liquid coating device of the fluorescent lamp according to the second aspect of the invention, characterized in that: the younger-storage tank further includes an opening and closing member that selectively brings the glass tube into the Inside the storage tank; an exhaust pipe for discharging the steam filled in the first storage tank to the outside. Shen. The fluorescent liquid coating of the fluorescent lamp of the second aspect of the present invention is characterized in that: "the residual steam supply means includes a steam generating tank connected to the first storage tank" The supply of saturated steam causes the inner IM of the first storage tank to maintain the pre-pressure, and the granule supply tank 'is used to supply the steam to the steam generating tank to supplement the consumption of the granules; a solvent supply pipe for connecting the solvent supply tank and the steam generation tank; and a steam supply pipe for connecting the steam generation tank and the first storage tank of 19 200820311. A fluorescent liquid coating device for a fluorescent lamp, characterized in that: the steam generating tank is provided with an air injection pipe for injecting air into the inside thereof to generate saturated steam in the steam generating tank. The fluorescent liquid coating device of the fluorescent lamp of claim 5, wherein the air injection tube further comprises a force meter for monitoring the pressure of the injected air. Next page 20