JP2004288610A - Lamp heater formed by weaving carbon thread - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the lamp heater using a carbon thread as a planar heat source which is formed by weaving carbon threads as warp and woof, applying ceramic coating on it, cutting into a prescribed length and width, fixing both ends of it by fixing terminals and connecting it to a lead wire, and by making it usable by easily adjusting the number of the carbon thread and the bundle thereof. <P>SOLUTION: The lamp heater comprises a carbon body of a certain length of which width in a warp 12 direction is smaller than the inner diameter of the lamp, a ceramic layer which provides a binding force by coating the surface of the carbon body, and a fixing terminal 20 pressing and fixing the both ends of the coated carbon body and conducted to the lead wire 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a carbon yarn lamp heater, and more specifically, after weaving a carbon yarn as a weft and a warp, applying a heat-resistant ceramic coat to the surface thereof and binding the same, thereby pressing both ends of the carbon body. It is woven from carbon yarn that is fixed with a fixing terminal for fixing, the fixed terminal fixes one end of the heat-resistant intermediate terminal, and the other end of the heat-resistant intermediate terminal is spot-welded to the connecting piece that connects the lead wire. Lamp heater.

  Generally, a lamp is also called a light bulb. A lamp for a heater that utilizes light generated by applying a current to a filament installed inside a vacuum tube and heating the filament to a high temperature, or using heat generated when necessary. It can also be used as Such a lamp has, for example, a structure in which a filament is installed inside in a vacuum state, and connection terminals for the filament are installed at both ends of a glass tube. When a tungsten filament is installed along the axis of the glass tube, iodine gas is sealed in the tube and a current is applied to the filament (power is applied). Tungsten atoms generated from the filament combine with iodine on the tube wall. A so-called iodine cycle, which returns to the filament as tungsten iodide and returns to the filament and further decomposes the tungsten into the filament, makes it possible to produce a highly efficient lamp that can be used for a long time.

  However, such a type of lamp has a problem that the filament is easily damaged due to weakness of the external impact due to external impact, and has a problem that its durability is weak due to deformation due to heating. is there.

  On the other hand, the carbon yarn used for the sheet heating element or the like uses carbon fiber bundles having a fine diameter as one group. For example, when the carbon yarn is composed of 26,400 carbon fibers, a length of 1 m and a diameter of 0.3 mm have a resistance of about 60Ω. Therefore, a desired output (W) is designed based on this, and a sheet heating element or the like is manufactured. In this case, the resistance value is determined by a resistance formula R = ρ (1 / S) (where R represents resistance, ρ represents resistivity, l represents length, and S represents unit area, respectively). However, these are used as a heat source of the sheet heating element, and are designed to radiate a temperature of about 50 to 70 ° C. If the temperature exceeds that, there is a danger of fire and air oxidation. As a result, the durability is significantly reduced.

  On the other hand, a heater incorporating such a carbon thread as a heat source in a vacuum tube has been developed. This is to provide a desired output by setting the resistance value with a bundle of carbon yarns, but the technology of fixing the carbon yarns to the terminals and the technology of bundling the carbon yarns are incomplete. Therefore, industrialization is accompanied by difficulties. As an example of such a technique, a carbon-based heating element disclosed in Patent Document 1 is known. As shown in FIG. A carbon heating element 1 and a cap-type electrode unit 2 are built in a vacuum sealed container 3, and the cap-type electrode unit 2 is connected to a lead wire 4 so that power is applied. It has become. The carbon-based heating element 1 has a fixed form in which a carbon bundle 5 is formed by bundling a plurality of bundles of carbon threads 6 with carbon fibers 7 as shown in FIG.

  FIG. 3 is an exemplary view configured to provide a bundle of carbon yarns 6 necessary in this case. The carbon bundle body 5 has a configuration in which a fixed bundle of carbon yarns 6 is wound with carbon yarns 7, respectively, and the three bundles wound with the carbon yarns 7 are bundled together with carbon yarns 7 'to be integrated.

  That is, at both ends of the carbon-based heating element 1 composed of a unitary carbon bundle 5 as shown in FIG. 2 or a plurality of carbon bundles 5 in which three carbon bundles as shown in FIG. Then, the cap-shaped electrode portions 2 are connected to each other, and formed so as to cover the vacuum sealed container 3.

However, such a method is used for forming a desired carbon yarn 6 from a desired number of bundles to a desired resistance value and outputting a desired output W. There are problems such as the inconvenience of bundling and the necessity of impregnating the liquid resin as necessary so that the bundled carbon yarns 7 are not unraveled.
JP 2000-123960 A

  The present invention is intended to solve such a problem, and an object of the present invention is to use a carbon yarn used as a sheet heating element as a heat source, woven the carbon yarn as a warp and a weft, and then coat the carbon yarn with a certain length. Lamp heater woven from carbon yarn, which cuts to both width and width and fixes both ends with fixed terminals, connects to the lead wire, easily adjusts the convergence of carbon yarn and the number of carbon yarns Is to provide.

  Another object of the present invention is to make it possible to adopt various widths and lengths of carbon yarns in a method of weaving carbon yarns, so that heaters of various capacities can be conveniently manufactured.

  Still another object of the present invention is to provide conduction to a lead wire through a heat-resistant fixed terminal and a lead-type heat-resistant intermediate terminal at both ends of a carbon body woven with carbon yarn, so that an external lead wire can be formed. An object of the present invention is to provide a lamp heater in which heat transfer is reduced and durability of a product using the heater is improved.

  Still another object of the present invention is to fabricate a carbon yarn woven fabric from a carbon yarn, using a ceramic coated yarn as a heat source and installing tension springs at both ends thereof to keep the carbon yarn woven fabric in an expanded state. It is to provide a lamp heater.

  Still another object of the present invention is to attach a gas purifying getter to a fixing terminal for fixing a carbon body to make the inside of a vacuum glass tube (closed container) constant, thereby providing excellent light transmission and extending the life. Thus, there is provided a lamp heater woven from carbon yarn.

  For this reason, the present invention provides a desired resistance value by cutting a carbon body coated with ceramic and woven as a weft and a warp into a predetermined length and width, and fixing both ends of the carbon body with heat-resistant fixing terminals. After that, a lamp heater woven from carbon thread is provided so that the heat transfer to the external lead wire is reduced by being connected to the connecting piece for fixing the lead wire using the heat-resistant intermediate terminal. I do.

  The present invention also provides a lamp heater woven from carbon yarn, wherein one of the intermediate terminals is formed of a conductive tension spring so as to maintain a spread state without wrinkling of the carbon body.

  Further, according to the present invention, a gas purifying getter is attached to a fixing terminal for fixing a carbon body, thereby making it possible to extend the life by gas purifying.

  That is, the present invention relates to a lamp heater in which a carbon body is incorporated as a heating element in a closed container, and this carbon body is electrically connected to an external lead wire via a connecting piece and is supplied with power by the external lead wire. A fixed length carbon body made of a carbon yarn fabric whose width in the warp direction is smaller than the inner diameter of the lamp, a ceramic layer that coats the surface of the carbon body to provide binding force, and fixes both ends of the coated carbon body The present invention also provides a lamp heater woven from carbon yarn, comprising: a lead terminal and a fixed terminal that conducts.

  Further, the present invention relates to a lamp heater in which a carbon body is incorporated as a heating element in a closed container, and the carbon body is electrically connected to an external lead wire via a connecting piece and power is supplied by the external lead wire. , A carbon body of a certain length made of a carbon yarn fabric whose width in the warp direction is smaller than the inner diameter of the lamp, a ceramic layer that coats the surface of the carbon body to provide a binding force, and conducts both ends of the coated carbon body. A fixed terminal that presses and fixes as much as possible, a conductive tension spring that is connected between the connection piece that fixes the external lead wire and the fixed terminal, and provides a tensile force to one end of the carbon body, and another external lead wire. A lamp heater woven from carbon thread, comprising a heat-resistant intermediate terminal connected between the connecting piece to be fixed and the fixed terminal and conductively supporting the other end of the carbon body. To provide.

  The carbon body is preferably made of a carbon woven fabric in which a bundle of a certain number of warps is woven with a weft at a certain distance.

  The fixing terminal includes a receiving plate that supports the end of the carbon body from the bottom, a lid plate that presses and fixes the end of the carbon body placed on the receiving plate, and a lid that is extended from both ends of the receiving plate and bent. And a pressing plate that functions to press and fix both ends of the plate.

  In the center of the bent portion of the cover plate, a terminal piece groove obtained by cutting a part of the cover plate is provided, and the receiving plate corresponds to the terminal piece groove and is projected horizontally with respect to the receiving plate. A configuration in which a terminal piece that facilitates coupling with a terminal is provided integrally can be exemplified.

  The fixing terminal includes a receiving plate that supports the end of the carbon body from the bottom, a lid plate that presses and fixes the end of the carbon body placed on the receiving plate, and an end extending from one end of the lid plate and the receiving plate. And a bent piece that functions to press and fix both ends.

  It is preferable that a pressing recess and a pressing projection for increasing a binding force are provided on the receiving plate and the lid plate so as to face each other.

  The fixed terminal for fixing both ends of the carbon body is made of heat-resistant nickel, one end of the short intermediate terminal is welded, and the other end of the intermediate terminal is connected to a flat terminal portion forming both ends of the sealed container. It can be configured to be fixed to the provided connecting piece.

  The intermediate terminal may be made of a heat-resistant molybdenum conductive wire.

  The tension spring may be made of a conductive material such as tungsten.

  Both ends of the carbon body may be covered with a short-folded lid carbon body and pressed and fixed by fixed terminals.

  A getter assembly is integrally welded to the fixed terminal, the getter assembly is a getter body as a powder fired body containing zirconium as a main component, and a housing container containing the getter body and having a getter hole having a smaller diameter than the getter body, A getter handle extending from the storage container and welded to the receiving plate.

  The present invention uses a carbon yarn used as a planar heating element as a heat source, cuts a carbon-coated yarn as a weft and a warp, and then cuts a ceramic-coated one into a fixed length and width, and fixes the cut ends with fixed terminals. In addition, since the present invention is connected to the lead wire, it is possible to easily adjust the convergence of the carbon yarn and the number of the carbon yarns to provide a lamp heater having various output models.

  In addition, the present invention provides a carbon body by weaving carbon yarn, so that the width and length of the carbon body can be variously adopted, and heaters having various structures can be manufactured.

  In addition, the present invention is configured such that both ends of a carbon body woven with carbon yarn are electrically connected to a lead wire through a heat-resistant fixed terminal and a lead-type heat-resistant intermediate terminal, so that an external lead wire can be formed. The durability of the product using the heater is improved by reducing the heat transfer.

  Further, according to the present invention, since the surface of the carbon yarn is coated with the ceramic, the surface becomes smooth, and the binding force is increased, so that the durability of the carbon fiber carbon body can be improved.

  Further, according to the present invention, a tension spring having a tensile force is installed at one end of the carbon body, and the carbon body is supported in a state of having a tensile force in the lamp. A lamp heater can be provided.

  Further, according to the present invention, since the gas purifying getter assembly is coupled to the fixing terminal for fixing the carbon body, when the carbon body generates heat, a reduction in the degree of vacuum caused by gas generated by the burning of foreign matter attached to the carbon body is prevented. Prevention by the purifying action of the getter assembly ensures that a clean vacuum is maintained at all times to extend the life of the lamp heater.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 4 is a schematic configuration diagram of the carbon body of the present invention, FIG. 5 is a main portion configuration diagram of the present invention, and FIG. 6 is an enlarged cross-sectional view taken along line AA of FIG.

  As shown in the figure, a carbon body is built in a vacuum glass tube (closed vessel) 3 as a heating element, and the carbon body is electrically connected to an external lead wire 4 via a connecting piece 4-1 and a power supply is provided by the external lead wire 4. In a heating lamp (lamp heater) for an electric stove that is supplied, the carbon yarn 6 is woven as a weft 11 and a warp 12, but a carbon of a fixed length woven so that the width in the warp direction is smaller than the inner diameter of the lamp. The body 10 includes a ceramic layer 30 that coats the surface of the carbon body 10 to provide a binding force, and a fixed terminal 20 that fixes both ends of the coated carbon body 10 and conducts with the lead wire 4. Further, in the present embodiment, a heat-resistant intermediate terminal 29 that is connected between the connection piece 4-1 for fixing the external lead wire 4 and the fixed terminal 20 and that supports the other end of the carbon body 10 so as to be conductive is included. An example is shown.

  The carbon body is formed by weaving a bundle of a certain number of warp yarns 12 at a certain distance L1 with each bundle of the weft yarns 11 at the location. The intermediate terminal 29 is composed of a heat-resistant molybdenum conductive wire.

  Reference numeral 3 denotes a vacuum glass tube as a closed container. Reference numeral 3-1 denotes a flat terminal portion for sealing both ends of the vacuum glass tube 3 and fixing the intermediate terminal 29.

  The intermediate terminal 29 and the connecting piece 4-1 are preferably made of molybdenum. It is preferable to use molybdenum in the present invention that has a melting point of 2610 ° C. and is used for a contact or a heat-resistant component of an electric circuit.

The carbon body 10 is preferably coated with a ceramic layer 30 for smoothing the surface and increasing the binding force. The ceramic layer 30 used in the present invention is formed by diluting a ceramic powder into a glaze, applying it to the surface of the carbon body 10 and then firing it to form the ceramic layer 30. Can be. As a material of the ceramic layer used in the present invention, mention may be made of ceramic _{(Al 2 O-- 3 + ZrO 2} + Y 2 O 3).

  The carbon body is used by cutting a woven fabric composed of carbon yarns 6 into a predetermined size, and is woven so that a bundle composed of a certain number of warp yarns 12 is repeatedly arranged at a fixed distance L1 as shown in FIG. It is preferable to use a resistor that does not significantly affect the resistance.

  FIG. 7 is an exploded perspective view showing a main part of the present invention, and FIGS. 8A to 8C are views showing a connected state of the main part of the present invention. As shown, the fixed terminal 20 includes a receiving plate 22 that supports the end of the carbon body 10 from the bottom, a cover plate 21 that presses and fixes the end of the carbon body 10 placed on the receiving plate 22, and a receiving plate 22. And pressing plates 23 and 24 for pressing and fixing both ends of the bent lid plate 21.

  As shown in FIGS. 7 and 8 (a) to 8 (c), the receiving plate 22 and the lid plate 21 are respectively opposed to a pressing concave portion 26 and a pressing projection 25 for increasing the binding force. It is provided as follows.

  FIG. 8B is a perspective view illustrating another example of the present invention, and FIG. 8C is a cross-sectional view taken along line BB of FIG. 8B. As shown, a terminal piece groove 21-1 obtained by cutting a part of the cover plate 21 is provided at the center of the bent portion of the cover plate 21, and the terminal piece groove 21- is formed in the receiving plate 22. 1, a terminal piece 22-1 is provided integrally with the receiving plate 22 so as to protrude horizontally with respect to the receiving plate 22 to facilitate connection with the terminal.

  Both ends of the carbon body 10 are configured to be covered with a cover carbon body 15 bent short, and fixed by pressing with a fixing terminal 20.

  A getter assembly 50 is integrally welded to the fixed terminal 20. The getter assembly 50 includes a getter body 52 as a powder fired body containing zirconium as a main component, a housing container 54 that houses the getter body 52, and has a getter hole 53 having a smaller diameter than the getter body 52, and extends from the housing container 54. And a getter handle 51 welded to the receiving plate 22. As the substance constituting the getter assembly 50, a zirconium powder fired body is used. In particular, materials disclosed in U.S. Pat. No. 3,203,901 and PTC International Publication WO2002 / 27058 are used. Examples of the product include, but are not limited to, a model name St101 (a model manufactured by Saes getters, manufactured using a Zr-Al alloy body of 84 wt% Zr and 16 wt% Al).

  FIG. 9 is a perspective view showing another embodiment of the fixed terminal of the present invention. As shown in FIG. 9, the fixed terminal 20 includes a receiving plate 22 that supports the end of the carbon body 10 from the bottom, a lid plate 21 that presses and fixes the end of the carbon body 10 placed on the receiving plate 22, The plate 21 includes bent pieces 27 and 28 extending from one end of the receiving plate 22 and functioning to press and fix both ends. The fixed terminal 20 is preferably made of a nickel thin plate having a purity of 99% or more, because nickel has heat resistance, low cost, and good bending property.

  The resistance value of a carbon body made of a carbon yarn fabric is inversely proportional to the number of carbon yarns. For example, when the resistance value is 240 Ω / m when the number of carbon yarns is 6,600, the resistance is about 120 Ω / m for 13200 threads and about 60 Ω / m for 26400 threads.

  The carbon fiber carbon body of the present invention is used as a carbon fiber lamp heater for an electric stove by installing what was used as a sheet heating element or the like in a vacuum glass tube (vacuum sealed container) so as to withstand high heat. It was made possible. As shown in FIG. 10, such a carbon yarn has a difference in resistance value depending on the number thereof and a principle that the resistance value increases when the length is increased, and the resistance value decreases when the number of bundles of carbon yarns increases. The required output (W) can be designed using the above.

  That is, if the resistance is, for example, 60Ω and the power is 220 V, the output P is 806 Watt according to Equation 1. Therefore, when the length is shortened or the width (the number of carbon yarns) is adjusted based on such output power, various lamps having the same output can be manufactured by adjusting the length of the glass tube of the lamp. . Since it was confirmed that heat was actually generated at 700 to 900 ° C., conditions sufficient for use as a heater were satisfied. This is because the inside of the vacuum glass tube 3 is vacuum and oxidation is fundamentally blocked, and a desired output can be provided by adjusting the resistance value according to the length or the number of carbon yarns. Is determined.

  Still another feature of the present invention resides in a configuration using the intermediate terminal 29. This is because the fixed terminals 20 are provided at both ends of the carbon body 10, and the fixed terminals maintain the binding force of the carbon body 10, thereby reducing heat generation due to poor contact between the carbon body 10 and the intermediate terminal 29. Since the heat generated from the contact portion with the terminal is reduced and the end portion of the carbon body 10 is fixed only by pressing the lid plate 21, the productivity can be improved because a separate processing step is not required.

  In the present invention, the intermediate terminal 29 and the lead wire 4 are interconnected via a connection piece 4-1 having a fixed size. The heat-resistant intermediate terminal 29 and the connecting piece 4-1 are preferably made of molybdenum, and the lead wire is preferably made of tungsten. This is because molybdenum has a melting point of 2600 ° C. and tungsten has a melting point of 3387 ° C. That is, the melting point of tungsten is higher than the melting point of molybdenum.

  In the production of the present invention, the carbon yarn 6 constituting the carbon body 10 is woven into the weft 11 and the warp 12, and a ceramic material is applied and cured so that the ceramic layer 30 can be formed as shown in FIG. As shown in FIG. 4, the width and length are set so as to have the above-mentioned resistance value, and cutting is performed. Then, the fixed terminals 20 are fixed to both ends of the cut carbon body 10 in a manner as shown in FIGS. 7 to 9, and then the intermediate terminals 29 are welded. At this time, a connecting piece 4-1 to which the lead wire 4 is connected in advance is fixed to one end of the intermediate terminal 29 by spot welding.

  The pre-manufactured product is mounted in a circular pipe having both ends opened (a vacuum suction pipe is provided at an intermediate portion of the length of the pipe), and both ends are heated at 1800 to 2000 ° C. and pressed. As shown in FIG. 5, both ends form a flat terminal portion 3-1 in close contact, and the center is formed so as to keep the space as it is. In particular, since the present invention employs a method using the heat-resistant intermediate terminal 29, when cooling and vacuuming after crimping to form the flat terminal portion 3-1 even if the space area of the lead wire 4 is large, Since the thin connecting piece 4-1 is interposed, the adhesiveness is improved, and it functions so as to maintain the characteristic of being shielded from the outside air when a vacuum is applied.

  The reason for using the heat-resistant intermediate terminal 29 is that when the end of the glass tube is heated to form the flat terminal portion 3-1, the carbon body 10 exposed to oxygen is directly oxidized and heated. This is to prevent that. That is, heat to be heated is temporarily applied to the intermediate terminal 29 (since it is made of molybdenum having a melting point of 2600 ° C. and has a heat resistance even when the glass tube is heated to 1800 to 2000 ° C.), heat is directly applied to the carbon body 10. The transmission is prevented, and the carbon body 10 is prevented from being damaged during the production, thereby increasing the production yield. Of course, when the forming of the flat terminal portion 3-1 is completed, the internal air is sucked through an auxiliary pipe for vacuum formation (not shown) to create a vacuum, which is cut and sealed to complete the vacuum glass tube 3. I do.

  FIG. 10 is a diagram showing another embodiment of the present invention. As shown in FIG. 10, a carbon body such as a bundle of carbon fibers is built in a vacuum glass tube (closed container) 3 as a heating element, and the carbon body is electrically connected to an external lead wire 4 via a connecting piece 4-1. In a heating lamp (lamp heater) for an electric stove in which power is supplied by the external lead wire 4, the carbon yarn 6 is woven as the weft 11 and the warp 12, but the width in the warp direction is smaller than the inner diameter of the lamp. A woven carbon body 10, a ceramic layer 30 that coats the surface of the carbon body 10 to provide a binding force, a fixing terminal 20 that fixes both ends of the coated carbon body 10, and a connection that fixes the external lead wire 4. A conductive tension spring 40 that is connected between the piece 4-1 and the fixed terminal 20 and provides a tensile force to one end of the carbon body 10, and a connection piece 4 that fixes another external lead wire 4. 1 and is connected between the fixed terminal 20 comprises a heat-resistant intermediate terminals 29 which supports the other end of the carbon body 10 so as to be conductive. A getter assembly 50 is fixed to at least one fixing terminal 20 by welding.

  Since the present invention maintains the basic configuration shown in FIGS. 4 to 10, the description of the operation and the principle of each configuration is omitted, and only the differences will be described. The conductive tension spring 40 is formed of a tungsten spring capable of applying a tensile force to the conductive member to provide a tensile force so that both ends are fixed between the connecting piece 4-1 and the fixed terminal 20. Constitute. In this case, the tension spring 40 is preferably provided only at one end of the carbon body 10, because it is expensive to fix the carbon body 10 in a state of having a tensile force at the time of installation. That is, in a state where the fixed terminal 20, the tension spring 40, the connection piece 4-1 and the lead wire 4 at the end of at least one place of the carbon body 10 are interconnected by welding or the like, the glass tube 3 which is not yet in a vacuum state. After the flat terminal portion 3-1 is heated and pressed and fixed, the inside of the glass tube is evacuated to complete the manufacture of the lamp heater. In the present invention, since the tension spring 40 is provided at one end of the carbon body 10, a tensile force is generated from the inside, and the carbon body 10 has a constant shape without being wrinkled or twisted. Provides characteristics and enables the production of standardized lamps.

  Further, in the present invention, since the getter assembly 50 is fixed to the fixed terminal 29 by welding or the like, when power is applied through the lead wire 4, the carbon body 10 is heated and generates heat. Even if the degree of vacuum is reduced due to the generation of foreign matter gas due to such combustion, the effect of providing a gas purifying function and maintaining the clean state and extending the life of the lamp is provided on the characteristics of the zirconium fired body, It is possible to prevent economical loss due to breakage or damage of the lamp at home or industrial sites where it is used.

  The present invention is not limited by the above-described embodiments and drawings. It will be apparent to those having ordinary skill in the art that various substitutions, modifications, and changes can be made without departing from the spirit of the present invention.

It is sectional drawing of a general carbon-based heating element. It is a principal part perspective view of the carbon body used for FIG. FIG. 3 is a perspective view of a state where three carbon bundles of FIG. 2 are bound. It is a schematic sectional view of a carbon object which constitutes the present invention. It is principal part sectional drawing of the lamp heater of this invention. FIG. 5 is an enlarged sectional view taken along line AA of FIG. 4 according to the present invention. It is a principal part disassembled perspective view of this invention. (A) is a perspective view showing a main part of the present invention, (b) is a perspective view showing another example of the present invention, and (c) is a view taken along a line BB in FIG. It is sectional drawing along. It is a principal part connection perspective view which shows the other example of this invention. It is principal part sectional drawing which shows another Example of this invention.

Explanation of reference numerals

REFERENCE SIGNS LIST 4 lead wire 4-1 connecting piece 6 carbon thread 10 carbon body 11 weft 12 warp 20 fixing terminal 21 cover plate 21-1 terminal piece groove 22 receiving plate 22-1 terminal pieces 23, 24 pressing plate 25 pressing protrusion 26 pressing recess 27 , 28 Folded Piece 29 Intermediate Terminal 30 Ceramic Layer 40 Tension Spring 50 Getter Assembly 51 Getter Handle 52 Getter Body 53 Getter Hole 54 Container

Claims (11)

A carbon body is built in the closed container (3) as a heating element, and this carbon body is electrically connected to the external lead wire (4) via the connecting piece (4-1) and power is supplied by the external lead wire (4). In the lamp heater
A carbon body (10) having a fixed length made of a carbon yarn fabric having a width in the warp direction smaller than the inner diameter of the lamp;
A ceramic layer (30) for coating the surface of the carbon body (10) to provide a binding force;
A lamp heater woven from carbon thread, comprising: a fixed terminal (20) for fixing both ends of a coated carbon body (10) and conducting to a lead wire (4). A carbon body is built in the closed container (3) as a heating element, and this carbon body is electrically connected to the external lead wire (4) via the connecting piece (4-1) and power is supplied by the external lead wire (4). In the lamp heater
A carbon body (10) having a fixed length made of a carbon yarn fabric having a width in the warp direction smaller than the inner diameter of the lamp;
A ceramic layer (30) for coating the surface of the carbon body (10) to provide a binding force;
A fixing terminal (20) for pressing and fixing both ends of the coated carbon body (10) conductively;
A conductive tension spring (40) connected between the connection piece (4-1) for fixing the external lead wire (4) and the fixing terminal (20) and providing a tension force to one end of the carbon body (10). When,
A heat-resistant intermediate terminal that is connected between a connection piece (4-1) for fixing another external lead wire (4) and the fixed terminal (20) and supports the other end of the carbon body (10) in a conductive manner. (29) A lamp heater woven from carbon yarn, characterized by comprising:   The carbon body according to claim 1, wherein the carbon body is made of a carbon woven fabric in which a bundle of a certain number of warps (12) is woven with a weft (11) at a certain distance (L1). Lamp heater woven from yarn.   The fixing terminal (20) includes a receiving plate (22) that supports the end of the carbon body (10) from the bottom, and a lid that presses and fixes the end of the carbon body (10) placed on the receiving plate (22). It comprises a plate (21) and pressing plates (23, 24) extending from both ends of the receiving plate (22) and functioning to press and fix both ends of the folded lid plate (21). A lamp heater woven from the carbon yarn according to claim 1. At the center of the bent portion of the cover plate (21), a terminal piece groove (21-1) obtained by cutting a part of the cover plate (21) is provided.
The receiving plate (22) has a terminal piece (22-1) corresponding to the terminal piece groove (21-1) and projected horizontally with respect to the receiving plate (22) to facilitate connection with a terminal. 5. The lamp heater woven from carbon yarn according to claim 4, wherein the lamp heater is provided integrally.   The fixing terminal (20) includes a receiving plate (22) that supports the end of the carbon body (10) from the bottom, and a lid that presses and fixes the end of the carbon body (10) placed on the receiving plate (22). And a bent piece (27, 28) extending from one end of the cover plate (21) and the receiving plate (22) and functioning to press and fix both ends. A lamp heater woven from the carbon yarn according to claim 1.   The receiving plate (22) and the lid plate (21) are provided with a pressing recess (26) and a pressing protrusion (25) for increasing the binding force, respectively, so as to face each other. A lamp heater woven from the carbon yarn according to claim 4.   A fixed terminal (20) for fixing both ends of the carbon body (10) is made of heat-resistant nickel, a short intermediate terminal (29) has one end weldable, and the other end has both ends of the sealed container (3). The lamp heater woven from carbon yarn according to claim 1, wherein the lamp heater is fixed to a connecting piece (4-1) provided on the flat terminal portion (3-1).   3. A lamp heater as claimed in claim 2, wherein said conductive tension spring (40) is made of a heat-resistant conductor, tungsten.   3. The carbon yarn according to claim 1, wherein both ends of the carbon body (10) are covered with a short-folded lid carbon body (15), and are fixed by pressing with a fixing terminal (20). 4. Woven lamp heater. A getter assembly (50) is integrally welded to the fixed terminal (20),
The getter assembly (50) contains a getter body (52) as a powder fired body containing zirconium as a main component, and a housing containing the getter body (52) and having a getter hole (53) smaller in diameter than the getter body (52). 3. A woven carbon yarn as claimed in claim 1 or 2, comprising a container (54) and a getter handle (51) extending from the container (54) and welded to the receiving plate. Lamp heater.

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