JP2001283779A - Black light bulb-shaped fluorescent lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a black light bulb-shaped fluorescent lamp that enables to improve the yield ratio of heat process for a fluorescent lamp. SOLUTION: The black light bulb-shaped fluorescent lamp 1 is provided with a fluorescent la 10 formed on an inner face thereof for emitting near ultraviolet rays, a fluorescent lamp 2 having flexure shaped bulbs 7 that enables to transmit visible light and near ultraviolet rays, a globe 6 incorporated with the fluorescent lamp 2 to constitute so as to transmit near ultraviolet rays output by the fluorescent lamp 2 and shield visible light.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a black light bulb-type fluorescent lamp.

[0002]

2. Description of the Related Art In recent years, compact fluorescent lamps using a black light fluorescent lamp have been used for decoration and jewelry identification. This black-light bulb-type fluorescent lamp emits a fluorescent material by irradiating the fluorescent material in a low-illuminance atmosphere with ultraviolet rays, for example. Such a black light bulb-type fluorescent lamp is disclosed, for example, in Japanese Patent Application Laid-Open No. H11-283570.
FIG. 4 is a partially cutaway front view showing the compact fluorescent lamp.

[0003] A bulb-type fluorescent lamp 30 shown in FIG. 4 has an H-shaped fluorescent lamp 31 for emitting ultraviolet light, a partition plate 32 to which the fluorescent lamp 31 is attached, and a base 33 at one end. It comprises a cover 34 having a partition plate 32 attached to the end, and a lighting circuit 35 housed in the cover 34.

FIG. 5 is a schematic view schematically showing a fluorescent lamp 31 of the compact fluorescent lamp 30 shown in FIG. As shown in FIG. 5, the fluorescent lamp 31 transmits a UV light and blocks a visible light, a fluorescent film 37 attached to an inner surface of the glass valve 36 to emit the UV light, It has a discharge medium 38 containing mercury sealed in the glass bulb 36 and a filament electrode 39 for generating a discharge in the glass bulb 36. The phosphor film 37 has a wavelength of 30 due to emission of mercury emission line.
The glass bulb 36 emits light with an emission peak in a wavelength range of 0 to 400 nm.
This is a filter glass bulb (a bulb made of BLB glass) that transmits near-ultraviolet rays but does not transmit visible light in the wavelength region of nm. Then, when the lighting circuit 35 is supplied with power through the base 33, the bulb-type fluorescent lamp 30
1 lights up and emits ultraviolet light.

[0005]

The glass bulb 36 of the fluorescent lamp 31 is bent into a U-shape or an H-shape, heat-treated to connect the glass bulbs 36, or to seal the filament electrode 39. Further, since the glass bulb 36 of the BLB glass bulb blocks visible light, it becomes so-called black glass and has good heat absorption. As a result, in the heating process of the glass bulb 36, there is a problem that the glass bulb 36 is easily broken or sagged, and the yield is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a black light bulb-type fluorescent lamp capable of improving the yield of heating processing of the fluorescent lamp.

[0007]

According to a first aspect of the present invention, there is provided a black-light bulb-type fluorescent lamp comprising: a bent bulb that transmits visible light and near-ultraviolet rays; and a near-ultraviolet ray formed on the inner surface of the bent bulb. A fluorescent lamp having a phosphor layer that emits light, a pair of electrodes sealed at both ends, and a discharge medium containing mercury and a rare gas sealed therein; a fluorescent lamp at one end and a fluorescent lamp at the other end A substrate mounting the lamp;
A lighting circuit housed in the base and electrically connected to the base and the fluorescent lamp to light the fluorescent lamp; and near-ultraviolet light attached to the other end of the base so as to include the fluorescent lamp and output from the fluorescent lamp And a globe configured to transmit visible light and block visible light.

The bent valve heats a straight tubular valve,
In addition to those that are softened and bent, valves that are formed in a so-called bridge shape or a mold shape in which tubular valves are connected to each other at their ends to communicate with each other are also included.

The glove itself is made of a material that transmits near ultraviolet rays (ultraviolet rays in a wavelength range of 300 to 400 nm) and blocks visible light, or transmits near ultraviolet rays to the inner or outer surface of the glove. Any of those having a filter film that blocks visible light may be used.

According to the present invention, the yield of fluorescent lamps is improved because BLB glass, which is difficult to heat, is not used for the bent bulb. As a result, the productivity of the black light bulb-type fluorescent lamp increases. In addition, the visible light and near-ultraviolet light transmitted through the bent bulb are configured so that the globe transmits near-ultraviolet light and blocks visible light, so that the bulb-type fluorescent lamp functions as a black light.

The invention of a black light bulb type fluorescent lamp according to a second aspect of the present invention provides a bent bulb that transmits visible light and near-ultraviolet rays, and a phosphor layer that emits near-ultraviolet rays formed on the inner surface of the bent bulb. A fluorescent lamp in which a pair of electrodes are sealed at both ends and a discharge medium containing mercury and a rare gas is sealed inside; a fluorescent lamp having a base at one end and a fluorescent lamp attached at the other end A substrate that is housed in the substrate;
A lighting circuit electrically connected to the base and the fluorescent lamp for lighting the fluorescent lamp; formed on the outer surface of the bent bulb so as to transmit near-ultraviolet light output from the fluorescent lamp and block visible light. And a filter membrane.

According to the present invention, the yield of fluorescent lamps is improved because BLB glass, which is difficult to heat, is not used for the bent bulb. As a result, the productivity of the black light bulb-type fluorescent lamp increases. In addition, among visible light and near ultraviolet light transmitted through the bent valve, near ultraviolet light is transmitted by the filter film and visible light is blocked,
The bulb-type fluorescent lamp acts as a black light.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention. FIG. 1 is a partially cutaway front view of a blattrite bulb-type fluorescent lamp, and FIG. It is explanatory drawing of a manufacturing process.

In FIG. 1, a bratlight bulb-type fluorescent lamp 1 includes a fluorescent lamp 2, a base 4 having a base 3 at one end, a lighting circuit 5 housed in the base 4, and a globe 6 containing the fluorescent lamp 2. It is constituted by such as.

In the fluorescent lamp 2, three bent bulbs 7,..., 7 bent in a U-shape are connected by joints 8,. The bent bulbs 7,..., For example, use an LM glass tube (soda lime glass tube) or a barium silicate glass (lead-free glass) tube that transmits visible light and near ultraviolet light, and emits near ultraviolet light on the inner surface. A phosphor layer 10 is formed. As the phosphor layer 10, for example, europium-activated alkaline earth metal borate (SrB ₄ O ₇ : E)
u ⁺² ) or cerium-activated yttrium phosphate (YPO ₄ :
Ce) and the like, and can emit near-ultraviolet light having an emission peak in a wavelength region around 350 nm. A pair of filament electrodes 11, 11 (shown in FIG. 2) are sealed at both ends of the connected bent-type bulbs 7,..., And a discharge medium 12 such as mercury and a rare gas such as argon gas as a rare gas. Is enclosed. Phosphor layer 10
Can emit near-ultraviolet light by mercury emission line radiation (254 nm).

The filament electrodes 11, 1 of the fluorescent lamp 2
One end is supported by a partition plate 13. And
The partition plate 13 is provided with a thermosetting adhesive 14,
14. That is, the fluorescent lamp 2 is attached to the other end of the base 4. The base 4 is made of a heat-resistant polybutylene terephthalate (PBT) resin.

A lighting circuit 5 is housed in the base 4. The lighting circuit 5 is a circuit board 1 made of PBT resin.
A well-known circuit in which electronic components such as a transistor 16, an electrolytic capacitor 17, and a film capacitor 18 are mounted on 5, 5 is provided. The circuit boards 15 are supported by the partition plate 13 and mounted in the base 4. The lighting circuit 5 is electrically connected to the base 3 and the filament electrodes 11 of the fluorescent lamp 2, and when supplied with power through the base 3, outputs high-frequency power to light the fluorescent lamp 2.

The other end of the base 4 has a fluorescent lamp 2
The glove 6 is attached so as to include That is, the globe 6 is fixed together with the partition plate 13 by the thermosetting adhesives 14, 14. And the globe 6 is made of LM glass (soda lime glass)
A filter film 19 that transmits near-ultraviolet light output from the fluorescent lamp 2 and blocks visible light is formed on the inner surface. The filter film 19 is, for example, a cobalt-based black powder.

Next, with reference to FIG. 2, a description will be given of a manufacturing process of the bratlight bulb-type fluorescent lamp 1. FIG. The same parts as those in FIG. 1 and the parts corresponding to the same parts are denoted by the same reference numerals.

First, as shown in FIG. 2A, the glass bulbs 7a, 7b, 7c, the thin tubes 20, 20, 20, and the filament electrode 11, which are bent in a U-shape and have the phosphor film 10 formed on the inner surface, are formed. Formed bead mount 2
1, 21 are prepared.

Next, as shown in FIG. 2B, bead mounts 21 are provided in both ends of the two glass bulbs 7a and 7c.
And the thin tube 20 are individually arranged, and both ends are heated. When the glass softens and melts, the glass is pressed by a pincher to form sealing portions 2A and 2B. Further, the thin tube 20 is disposed on one of the remaining one glass bulb 7b, and the sealing portion 2B is formed in the same manner as described above. Further, the other end is provided with a sealing portion 2C without disposing a mount or a thin tube.

Immediately after the formation of the sealing portions 2A, 2B and 2C, the glass portions near the sealing portions 2B and 2C are locally heated and blown from the narrow tube 20 to blow the heated and melted glass. , And 2D are formed in the openings.

Next, as shown in FIG. 2 (c), the projections 2D, 2D of the glass bulbs 7a, 7b are abutted and heated, and the two are fused and air-tightly connected to form a joint portion 8. Further, the other protrusion 2D of the glass bulb 7b and the protrusion 2D of the glass bulb 7c are abutted and heated,
The two are fused and airtightly connected to form the joint 8.

Next, as shown in FIG. 2 (d), the connecting portion consisting of the joints 8, 8 between the glass bulbs 7a, 7b, 7c is heated and softened, so that the connection between the glass bulbs 7a, 7b, 7c is reduced. Is formed in an annular shape. Of the integrated glass bulbs 7a, 7b, 7c, for example, the glass bulb 7b
The granular mercury is accommodated in the small tube 20, and the protruding tip of the small tube 20 is sealed as short as possible. Then, the remaining one or two thin tubes 20 that are open are connected to the exhaust head of the exhaust machine, and the communicating glass valves 7a, 7
After evacuating the inside of b and 7c and performing gas cleaning and the like, argon gas or the like as a predetermined rare gas is sealed at a predetermined pressure,
The fluorescent lamp 2 is obtained by sealing the thin tube 20 connected to the exhaust head.

As shown in FIG. 2 (e), the fluorescent lamp 2 has a glass bulb 7a, 7b, 7c joined to a disc-shaped partition plate 13 made of PET resin via a thermosetting adhesive 14. It is supported. A circuit board 15 forming the lighting circuit 5 is attached to the partition plate 13.
Furthermore, the base 4 having the base 3 and the globe 6 are covered, and the bratlight bulb-type fluorescent lamp 1 is completed.

As described above, the glass bulbs 7a, 7b, 7c on which the phosphor film 10 is formed are subjected to many heating processes. That is, when the bead mount 21 and the thin tube 20 are provided at both ends of the glass bulbs 7a and 7c, and when the projections 2D are formed on the glass bulbs 7a, 7b and 7c, the joints 8 are formed by abutting the projections 2D. It is time to form the glass bulbs 7a, 7b, 7c in an annular shape.

The conventional glass bulbs 7a, 7b, 7c are:
The black glass, which blocks visible light, has good heat absorption, and is easily cracked or sagged in the above-mentioned heating process, thereby lowering the yield of the fluorescent lamp 2. However, LM glass (soda lime glass) that transmits near ultraviolet light and visible light
When the glass bulbs 7a, 7b, 7c are made of glass or barium silicate glass (lead-free glass), the glass bulbs 7a, 7b, 7c have low heat absorption, and are not easily cracked or sagged in the heating process. Yield improved.

Next, the operation of the first embodiment will be described.

When the lighting circuit 5 is supplied with power through the base 3, the lighting circuit 5 outputs a high-frequency voltage, and the fluorescent lamp 2
Is applied between the filament electrodes 11, 11. Then
A discharge is formed in the discharge path 9 between the filament electrodes 11, 11, and the mercury constituting the discharge medium 12 evaporates. Visible light and near-ultraviolet light are emitted from the phosphor film 10 by the mercury emission line, and the visible light and near-ultraviolet light are emitted from the bent bulbs 7,. And glove 6
And filter membrane 19 formed on the inner surface of globe 6
Cuts off visible light and transmits near ultraviolet light. Thus, the compact fluorescent lamp 1 functions as a black light.

As described above, the bent valves 7,.
Transmits visible light and near-ultraviolet light, so that heat absorption during heat processing is low, breakage and sagging are reduced, and the yield of the fluorescent lamp 2 is improved. In addition, since the globe 6 is configured to transmit near-ultraviolet rays and block visible light, the bulb-type fluorescent lamp 1 can function as a black light.

In the above embodiment, the glove 6
A filter film 19 for blocking visible light and transmitting near ultraviolet light is formed on the inner surface of the glove 6.
May be formed on the outer surface (outer surface). Also, without forming the filter film 19, the globe 6 blocks visible light and transmits near ultraviolet light, for example, Si-Pb containing cobalt or the like.
-Na-K glass or Ba-Na glass.

Next, a second embodiment of the present invention will be described.

FIG. 3 is a partially cutaway front view of a flat light bulb-type fluorescent lamp according to a second embodiment of the present invention. The same parts as those in FIG. 1 and the parts corresponding to the same parts are denoted by the same reference numerals, and description thereof will be omitted.

3 is a bulb-type fluorescent lamp in which the fluorescent lamp 2 is exposed. Near-ultraviolet light is transmitted through the outer surfaces of the bent bulbs 7,. The filter film 19 of a cobalt-based powder material to be cut off is applied and formed. The bent bulbs 7,..., 7 are made of LM glass (soda lime glass) and transmit near ultraviolet rays and block visible light.

When the fluorescent lamp 2 is turned on, the fluorescent film 10
Visible light and near-ultraviolet light emitted from the bent bulb 7,
, 7 are transmitted. The filter film 19 formed on the outer surface of the bent bulbs 7,..., 7 blocks visible light and transmits near ultraviolet rays. That is, near-ultraviolet light output from the fluorescent lamp 2 is radiated outward.

Since the bent bulbs 7,..., 7 transmit visible light and near-ultraviolet light, the heat absorption in the heating process is low, breakage and sagging are reduced, and the yield of the fluorescent lamp 2 is improved. As a result, the productivity of the black light bulb-type fluorescent lamp 20 increases. In addition, the bent valve 7,
, 7, near-ultraviolet light is transmitted by the filter film 19 to block visible light, so that the bulb-type fluorescent lamp 20 can function as a black light.

[0038]

According to the first aspect of the present invention, since the BLB glass, which is difficult to heat-process, is not used for the bent bulb, the yield of the fluorescent lamp and the black light bulb-type fluorescent lamp is improved, and the globe emits near ultraviolet rays. The light bulb shaped fluorescent lamp can act as a black light because it is configured to transmit and block visible light.

According to the second aspect of the present invention, since the BLB glass which is difficult to heat is not used for the bent bulb, the yield of the fluorescent lamp and the black light bulb type fluorescent lamp is improved, and the visible light transmitted through the bent bulb is improved. Of the light and near-ultraviolet light, the near-ultraviolet light is transmitted by the filter film applied to the outer surface of the bent bulb and the visible light is blocked, so that the bulb-type fluorescent lamp can function as a black light.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a black light bulb-type fluorescent lamp showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of one manufacturing process of the bratlight bulb-type fluorescent lamp.

FIG. 3 is a partially cutaway front view of a black light bulb-type fluorescent lamp showing a second embodiment of the present invention.

FIG. 4 is a cutaway front view of a conventional black light bulb-type fluorescent lamp.

FIG. 5 is a schematic view schematically illustrating the fluorescent lamp of FIG. 4;

[Explanation of symbols]

 1,20: black light bulb-type fluorescent lamp 2: fluorescent lamp 4: base 5: lighting circuit 6: globe 19: filter film

Claims (2)

[Claims] 1. A bent valve that transmits visible light and near-ultraviolet light, a phosphor layer that emits near-ultraviolet light formed on the inner surface of the bent valve, and a pair of electrodes are sealed at both ends, and the inside thereof is enclosed. A fluorescent lamp in which a discharge medium containing mercury and a rare gas is sealed; a base having a base at one end and a fluorescent lamp attached to the other end; a base and the fluorescent lamp housed in the base; A lighting circuit electrically connected to turn on the fluorescent lamp; mounted on the other end side of the base so as to include the fluorescent lamp, so as to transmit near-ultraviolet light output from the fluorescent lamp and block visible light. A black light bulb-type fluorescent lamp comprising: 2. A bent bulb that transmits visible light and near-ultraviolet light, a phosphor layer that emits near-ultraviolet light formed on the inner surface of the bent bulb, and a pair of electrodes are sealed at both ends, and inside the bulb. A fluorescent lamp in which a discharge medium containing mercury and a rare gas is sealed; a base having a base at one end and a fluorescent lamp attached to the other end; a base and the fluorescent lamp housed in the base; A lighting circuit electrically connected to turn on the fluorescent lamp; and a filter film formed on the outer surface of the bent bulb so as to transmit near-ultraviolet light output from the fluorescent lamp and block visible light. A black-light bulb-type fluorescent lamp, comprising: