JP2015201253A - fluorescent lamp - Google Patents

Abstract

An object of the present invention is to provide a fluorescent lamp that suppresses the possibility of a support member in a completed lamp falling off from a stem or mount. A phosphor layer having a glass tube, mercury sealed in the glass tube, a discharge medium containing a rare gas, and a base, and applied to an inner wall of the glass tube, and the glass tube It has a mount with a pair of electrode members provided to seal both ends, and the mount is equipped with an Hg getter and an Hg capsule to prevent the scattering of electrode member materials on the phosphor surface near the lamp electrode while the fluorescent lamp is on. In the fluorescent lamp having a supporting member for supporting the electrode and the enclosure provided in the shortest direction of the inner surface distance of the lamp, the supporting member is a strand and has a crushing portion in a portion embedded in the mount. [Selection] Figure 2

Description

  The present invention relates to a fluorescent lamp.

  Conventionally, in fluorescent lamps, as a measure for preventing thermal destruction of the flare stem at the end of its life, support for an electrode scattering substance adhesion preventing member provided to cover the lead wire sealing stem (Patent Document 1), or in the fluorescent lamp In order to prevent mercury from being scattered on the inner surface of the lamp (see Patent Document 2), or to support the mercury holder provided to enclose the prescribed mercury in the electrode member and the electrode. In order to support the enclosure provided in the shortest direction of the inner surface distance, a support member such as a Ni-plated Fe wire has been used. This support member was partially embedded in the shape of a straight line that was used as a support member when the glass was melted during stem or mount shaping, and was fixed by welding to glass.

JP 2004-127688 A Patent No.4861680

    As in the conventional case, with a support member that is in a linear shape in which the strands are arranged, the support member may fall off the stem or the mount due to vibration or the like when the completed fluorescent lamp is transported. If the support member falls off the stem or mount, the support member and the one joined to the support member on the inner surface of the lamp (electrode scattering material adhesion prevention member, mercury holder, etc.) are also dropped and applied to the inner surface of the fluorescent lamp glass. The resulting phosphor may fall off and lead to poor appearance. An object of the present invention is to provide a fluorescent lamp that suppresses the possibility of the support member in the completed lamp falling off from the stem or mount.

  In the present invention, either before or after the step of cutting a wire used as a support member to a specified length, a part of the embedded portion is processed into a shape different from the shape of the original wire, and the stem and the mount It is characterized by embedding at the time of shaping.

  ADVANTAGE OF THE INVENTION According to this invention, the fluorescent lamp which prevented the drop-off | omission from the electrode member scattering substance adhesion prevention material with respect to the vibration of a completion lamp, and the stem and mount of an enclosure can be provided.

End sectional view of the fluorescent lamp 100 Three views showing the appearance of the vicinity of the end of the support member 6 of the first embodiment Three views showing the appearance of the vicinity of the end of the support member 6 of the second embodiment Diagram showing normal products

  Details will be described below with reference to the drawings.

[First Embodiment]
A first embodiment of the present invention will be described.

  FIG. 1 is an end cross-sectional view of the fluorescent lamp 100. The fluorescent lamp 100 includes a glass tube 1, a phosphor 2, a mount 3, a support member embedded portion 3 a, an electrode scattering material adhesion preventing member 4, an electrode 11, an electrode enclosure 5, a support member 6, and mercury. Or it has a mercury compound (not shown) and a noble gas (not shown).

  The glass tube 1 is a straight tube-shaped member having openings at both ends. The phosphor 2 is provided on the inner surface of the glass tube 1. The mount 3 is a member made of glass, and is provided so as to close the openings at both ends of the glass tube 1. The mount 3 is attached to the glass tube 1 by melting. The electrode scattered material adhesion preventing member 4 is a member that prevents the material scattered from the electrode 11 from adhering to the mount 3. The electrode 11 has a filament 11a and an inner lead wire 11b. A filament 11a is provided so as to connect one end of the two inner lead wires 11b. The electrodes 11 are located at both ends of the fluorescent lamp 100 and communicate with the inside and outside of the glass tube 1 via the mount 3. At that time, the filament 11a is positioned inside the glass tube 1 and the other ends of the two inner lead wires 11b are positioned outside the glass tube. The electrode 11 is coated with an electron emitting substance. The electrode enclosure 5 covers the filament 11 a of the electrode 11. The electrode enclosure 5 is provided in order to prevent the electron-emitting substance applied to the electrode 11 from scattering to the inner surface of the fluorescent lamp 100 (the inner surface of the glass tube 1). The electrode enclosure 5 is provided in the shortest direction of the inner surface distance between the filament 11 a and the glass tube 1. The support member 6 is a member for fixing the electrode enclosure 5 to the mount 3. The support member 6 is a linear member. One end of the support member 6 is attached to the electrode enclosure 5, and the other end is attached to the support member embedded portion 3 a of the mount 3.

  FIG. 2 is a three-sided view showing the appearance of the vicinity of the end of the support member 6 of the first embodiment. In this embodiment, it has the crushing process part 6a which is a part of the state crushed compared with the strand at the other end of the supporting member 6 which consists of a strand. The crushing portion 6a is attached to the support member embedded portion 3a as follows. At the time of shape processing of the mount 3, the glass of the mount 3 is melted, the crushed portion 6 a of the support member 6 is embedded in the support member embedded portion 3 a, and the crushed portion 6 a is embedded in the support member by welding with the glass of the mount 3. Attach to part 3a. As a result, the tensile strength (N) when the support member 6 having the crushing portion 6a is pulled is larger than that of the support member that has been formed by stranding the wire. By using the support member 6 having the crushing portion 6a, it is possible to provide a fluorescent lamp that suppresses the fear that the support member in the completed lamp may fall off from the stem or mount.

  Table 1 shows the results of measuring the tensile strength (N) when the support member was pulled out after the mount was completed and pulled out from the mount. A strand having a diameter of 0.6 mm is used as the strand of the support member. The crushing process part 6a is shape | molded by pressurizing from the both sides | surfaces of a strand, and flattening the part from the other end part tip of a strand to about 1 mm using a vise. Table 1 shows the raw wire (normal product), 0.48 mm crushed (0.48 mm crushed), 0.37 mm crushed (0.37 mm crushed), 0.26 mm crushed The results of five samples each, the average, the maximum, and the minimum are shown for the four processed (crushed by 0.26 mm).

  FIG. 4 shows a normal product. The normal product is a fluorescent lamp in which glass is melted and a supporting member is embedded and bonded to the glass at the time of shape processing of the mount, but the weld to the stem glass is poor due to the bubbles 8 on the surface of the strand of the supporting member 9. .

  In actual use, there should be no problem if the tensile strength of this support is 24.5N or more against vibrations of the instrument during transportation and lighting of the lamp (to prevent the support member from falling off the stem or mount). As shown in Table 1, there are those with less than 24.5N in the case of embedding the wire (normal product) as it is, and it can be seen that the strength against pulling is weak on average. In contrast, the three types of crushed products are the results that can greatly satisfy 24.5N or more.

  Similarly, when the diameter of the strand of the support member is 0.1 to 1.0 mm, it is confirmed that the same effect can be obtained by adjusting the thickness of the crushing portion 6a to 50 to 90% of the strand. it can.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a three-sided view showing the appearance of the vicinity of the end portion of the support member 6 of the second embodiment. Hereinafter, parts different from the first embodiment will be described. The parts not described are the same as those in the first embodiment.

  In the present embodiment, the support member 7 has a concave recess 7a. Attachment of the recess processing portion 7a to the support member embedding portion 3a is the same as in the first embodiment having the crushing processing portion 6a. The tensile strength (N) when the support member 7 having the indented portion 7a is pulled is larger than that of the support member that has been formed by stranding and has a linear shape. By using the support member 7 having the recess processing portion 7a, it is possible to provide a fluorescent lamp that suppresses the risk of the support member in the completed lamp falling off from the stem or mount.

  Table 2 shows the result of measuring the tensile strength (N) when the support member 7 was pulled off from the mount 3 after the mount was completed and dropped. A strand having a diameter of 0.6 mm is used as the strand of the support member.

  In the present embodiment, the indented portion 7a is approximately 0.1 from the tip of the other end of the strand of the support member 7 in the embedded portion of the support member embedded portion 3a having a total length of 0.5 to 4.0 mm. It is provided by making a concave recess in one place while leaving a wire shape in a portion of ~ 0.6 mm. In other words, the portion of 0.1 to 0.6 mm from the tip of the support member 7 is a strand portion in which the shape of the strand is left, and the dent processing portion 7a is provided next to the strand portion 7b. In this way, leaving the strand shape at the tip of the other end of the strand, by providing a concave shape in an arbitrary portion, glass melted into the recess enters, and the effect of returning to the tip strand is obtained, Furthermore, the fear of dropping off can be suppressed.

  The concave depression is made by using a flat crushing portion processed with a super-hard metal and a flat metal that fixes the strands. Table 2 shows that the wire was processed as a wire (normal product) and was hollowed by a 0.19 mm convex crushed portion (0.19 mm convex), and the hollow was hollowed by a 0.3 mm convex crushed portion. About three of what was done (0.3 mm convex), the result of each 10 samples, the average, the maximum, and the minimum are shown.

  As described above, it can be confirmed that the product subjected to indentation has improved strength against pulling compared to the normal product. Furthermore, the effect is expected to be improved by increasing the depth of the concave portion. However, if the depth of the concave part is 50% or more of the diameter of the strand, when a pulling force is generated in the support part during lamp production, etc., the support line will be broken leaving the tip in the mount glass from the concave part. There is a risk. Therefore, it is desirable that the depth of the recessed portion in the recessed portion 7a is less than 50% of the diameter of the strand.

DESCRIPTION OF SYMBOLS 1 Glass tube 2 Phosphor 3 Mount 3a Support member embedding part 4 Electrode member scattering substance adhesion prevention member 5 Electrode enclosure 6, 7, 9 Support member 6a Crushing process part 7a Indentation process part 8 Bubble 11 from mount embedding support member Electrode 11a Filament 11b Inner lead wire 100 Fluorescent lamp

Claims (6)

A glass tube, mercury enclosed in the glass tube, a discharge medium containing a rare gas, and a base, a phosphor layer applied to the inner wall of the glass tube, and both ends of the glass tube are sealed An electrode having a mount having a pair of electrode members provided, and an electrode and a lamp having an Hg getter and an Hg capsule for preventing adhesion of substances scattered from the electrode member to the surface of the phosphor near the lamp electrode while the fluorescent lamp is lit In the fluorescent lamp having a support member for supporting the enclosure provided in the shortest direction of the inner surface distance,
The fluorescent lamp characterized in that the support member is an element wire and has a crushing portion in a portion embedded in the mount. A glass tube, mercury enclosed in the glass tube, a discharge medium containing a rare gas, and a base, a phosphor layer applied to the inner wall of the glass tube, and both ends of the glass tube are sealed An electrode having a mount having a pair of electrode members provided, and an electrode and a lamp having an Hg getter and an Hg capsule for preventing adhesion of substances scattered from the electrode member to the surface of the phosphor near the lamp electrode while the fluorescent lamp is lit In the fluorescent lamp having a support member for supporting the enclosure provided in the shortest direction of the inner surface distance,
The fluorescent lamp according to claim 1, wherein the support member is an element wire and has a recessed portion in a portion embedded in the mount. The fluorescent lamp according to claim 2,
The fluorescent lamp characterized in that the depth of the recessed portion in the recessed portion is less than 50% of the diameter of the strand. The fluorescent lamp according to claim 2,
The indented portion has a length of 0.5 to 4.00 mm in the length direction of the strand. The fluorescent lamp according to claim 2,
The indentation processing part has an expansion part of 105-150% of the diameter of a strand in the diameter direction of a strand, The fluorescent lamp characterized by the above-mentioned. The fluorescent lamp according to claim 2,
The portion of 0.1 to 0.6 mm from the tip of the support member is a wire portion that leaves the shape of the wire,
The indentation processing part is provided next to the strand part, The fluorescent lamp characterized by the above-mentioned.