JPH05159742A - Shielding tool for fluorescent tube of illuminator - Google Patents

Abstract

PURPOSE: To provide an improvement device of fluorescent lamp, which inhibit the undesired emissive matter from a fluorescent tube. CONSTITUTION: An improvement device of a fluorescent lamp is connected to the earth potential, is installed throughout the whole length of a fluorescent tube 12 between the operating electrodes, and comprises a conductive radio frequency shielding body 26 which is installed at least around the fluorescent tube 12 of a directional part where the light is applied toward an area where the light is applied from the fluorescent lamp, and through which the light can be transmitted. The improvement device comprises a pair of X-ray shielding bodies 28 which cover the corresponding electrodes 24, at least around the fluorescent tube 12 in the direction where the light is applied toward an area which is irradiated by the fluorescent lamp. These shielding bodies can be used inside or outside the fluorescent tube. Further they can be used for a protective synthetic resin tube covering the fluorescent tube. The ratio frequency shielding body 26 is formed of the conductive network material, or a transparent conductive particles such as tin indium oxide. Thereby the various effects can be expected by using the fluorescent tube which radiates the frequency near the natural sunlight, or various kinds of fluorescent tubes, shielding the electrode of the fluorescent tube to prevent the radiation of X-ray, further shielding the fluorescent lamp to prevent the radiation of the radio frequency, or combining these.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp device, and more particularly, to a fluorescent lamp which is held by a fluorescent lamp holder and has an operating electrode at an end, a length (cylindrical portion) and a substantially annular cross section. It is connected to the earth potential and is provided over the entire length of the fluorescent tube between both electrodes, and is provided around the fluorescent tube at least in the direction in which the light is irradiated toward the area irradiated by the fluorescent lamp. A pair of X-rays that are provided so as to cover each electrode corresponding to the periphery of the fluorescent tube in the direction in which light is emitted toward the area irradiated by the conductive radio frequency shield and at least the fluorescent lamp that can pass through. It relates to an improved device for suppressing undesired radiation consisting of shields.

[0002]

2. Description of the Related Art U.S. Pat. No. 3,767,957, third
John in 885150 and 4091441
N. Ott discloses a fluorescent lamp that combines full spectrum light with a shield to prevent unwanted frequency radiation.
This fluorescent lamp is hereinafter referred to as a radiation shielded full spectrum lamp or RS
It is called FS light. According to the tests conducted since its introduction, this R
SFS lamps have proven to have physiological and psychological effects not found in conventional lighting fixtures. Conventional luminaires such as incandescent and fluorescent lamps lack certain useful wavelengths and contain harmful wavelengths. Conventional ones, especially fluorescent lamps, do not contain all the wavelengths contained in natural sunlight, but rather radio frequency and X-ray radiation. This radiation shielded full spectrum lamp combines different types of fluorescent tubes to provide a synthetic light that is closest to natural sunlight. At the same time, it also provides a shield against unwanted radio frequency and X-ray radiation. It is these technical contents that are disclosed in the Ott patent above. As shown in FIG. 1, a radiation shielded full spectrum lighting fixture 10 driven by a ballast 14 comprises a fluorescent tube 12 including a visible spectrum tube and a near UV tube. When the lighting fixture 10 is installed on the ceiling by a normal use method, the reflector 16 reflects the light from the fluorescent tube 12 toward the floor. The fin of the reflector 16 through which the light of the fluorescent tube 12 passes is hard finned.
A grid 18 is arranged. The grid 18 holds a screen 20. Lattice 18 and screen 20
Is also grounded as shown. Thus, the grid 18 and screen 20 conduct to the ground any RF energy that passes with the light emitted from the fluorescent tube 12. As shown in FIG. 2, each fluorescent tube 12 has a short wavelength radiation shield 2 at each end so as to cover the vicinity of the electrode 24.
2 are deployed. The shield 22 is preferably made of lead so that it is effective for short wavelength radiation such as X-rays.

[0003]

The RSFS lamp manufactured and sold based on the disclosure of the above-mentioned Ott patent is a unique fluorescent lamp device including all of those patented elements. So from a standard fluorescent light to RSFS in one building
Conversion to light requires removal of all existing fluorescent lights and installation of new RSFS lights. Needless to say, this is very costly and hinders the spread of RSFS lamps. Personalized R for use near a personal computer or monitor to prevent harm caused by them
SFS lights are also extremely expensive, and only a few are benefiting from them.

Therefore, the present invention has been made to solve the above problems, and its purpose is to modify a standard fluorescent lamp so that most of the effects of the RSFS lamp device can be obtained from a standard fluorescent lamp. And to provide a remodeling device. Another object of the present invention is to provide a shielding device that prevents most of the X-ray and short wavelength radiation emitted by standard fluorescent lamps.

Another object of the present invention is the large amount of radio frequency and X-ray radiation emitted by a standard fluorescent tube that can be reattached from a broken fluorescent tube to another when the fluorescent tube is broken. An object of the present invention is to provide a shielding device that prevents a portion. Still another object of the present invention is to provide a modification method and a modification device using a standard fluorescent lamp so that most of the effects of the RSFS lamp device can be obtained from the standard fluorescent lamp. is there.

Still another object of the present invention is to provide a fluorescent tube with a special shield to a standard fluorescent lamp fixture so that most of the effects of the RSFS lamp system can be obtained from a standard fluorescent lamp. It is to provide a modification method and a modification device to be used.

[0007]

Means for Solving the Problems and Actions That is, the present invention, which has been made to achieve the above-mentioned object, has a working electrode at an end,
In a fluorescent lamp having a fluorescent tube having a predetermined length and a substantially annular cross section and held by a fluorescent lamp holder, the fluorescent lamp is connected to the ground potential, and is arranged over the entire length of the fluorescent tube between the working electrodes,
In addition, at least a conductive radio frequency shield, which is provided around the fluorescent tube in the direction of light irradiation toward the light irradiation area and is capable of passing light, is irradiated with the light toward at least the light irradiation area. The gist is an improved device that is provided to cover the respective electrode portions corresponding to the periphery of the fluorescent tube in the direction, and that suppresses an undesired radiation product that is composed of a pair of X-ray shields.

In one of the embodiments of the present application, a pair of X-ray shields are attached to the upper plate of the fluorescent lamp lighting device, and have a mounting portion for electrically connecting to the fluorescent lamp lighting device. It consists of a V-shaped bracket. The light-permeable, electrically conductive radio frequency shield comprises a metal screen carried by and electrically connected to the J-brackets provided at both ends. The J-shaped bracket can also be made of tern steel.

In yet another embodiment, a light permeable, conductive radio frequency shield is disposed on the outer surface of a protective synthetic resin tube mounted on the fluorescent tube. The light permeable, conductive radio frequency shield may be a metallic screen or particles of transparent, conductive metal oxide such as indium tin oxide. The indium tin oxide particles may be disposed on a transparent substrate that is adhered to a protective synthetic resin tube.

The light-permeable, electrically conductive radio frequency shield may consist of a metal screen mated with an X-ray shield mounted as a separate component. In yet another embodiment, a light permeable, electrically conductive radio frequency shield is disposed on the inner surface of a protective synthetic resin tube mounted on the fluorescent tube and is transparent and electrically conductive, such as indium tin oxide. Made of metal oxide particles.

The light-transmitting conductive radio frequency shield is a transparent conductive metal oxide disposed on the outer surface of the fluorescent tube or on a transparent substrate mounted on the outer surface of the fluorescent tube. May be composed of particles. Finally, the light-permeable, electrically conductive radio frequency shield may consist of particles of transparent, electrically conductive metal oxide disposed on the inner surface of the fluorescent tube and below the fluorescent phosphor. In that case, the fluorescent tube includes an external electrical connection that is connected to the conductive metal oxide.

[0012]

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT As one of ordinary skill in the art will readily appreciate, the RSFS light fixture 10 of FIGS. 1 and 2 contains many of the components of a standard lighting system. Visible and near-UV fluorescent tubes, ballasts, fluorescent tube sockets, connecting wires, and reflectors are substantially standard. Many commercially available fluorescent light fixtures have a mounting groove around the reflector for holding a synthetic resin diffusion panel or a lattice that covers the fluorescent tubes and sockets that are unaesthetic. Therefore,
For "custom-made" RSFS light fixtures, a lead shield is attached to the standard visible and near-ultraviolet fluorescent tube electrodes for full spectrum light emission, instead of a synthetic resin diffusion panel or grid. Further, the grid or screen of the present invention is used, and the ground wire from the grid and the screen is connected to the ground potential of the connecting electric wiring. In recent commercial RSFS light fixtures, the grids and screens of these patents have been replaced by grounded "grids" consisting of conductors silk screened directly inside a synthetic resin diffuser panel.

The most basic method of the invention is the prior art "custom made" RSFS of FIGS.
Most of the advantages of the light lighting fixture 10 can be achieved as shown in FIGS. A standard fluorescent tube 12 is inserted over its entire length in a tubular radio frequency shielding sleeve 26. Further, the radio frequency shielding sleeve 26 may be directly attached to the outer surface of the fluorescent tube 12. Radio frequency shielding sleeve 2
When 6 is an independent screen-shaped material, its end can be fixed by winding a strip of lead foil 28 on the position where the electrode 24 is located. Thus, a desired shield for short wavelengths such as X-rays emitted from the electrode 24 can be obtained. Even when the radio frequency shielding sleeve 26 is directly attached to the outer surface of the fluorescent tube 12, the lead foil 28 for the X-ray shield is wrapped around the radio frequency shielding sleeve 26 at the position where the electrode 24 is present. Is not fixed. In either case, the ground wire 30 is the lead foil 28 for the X-ray shield.
Either (if in electrical contact with the sleeve 26) or connected to the sleeve 26. Since lead oxidizes fairly quickly, the ground wire 30 must be directly connected to the sleeve 26 unless the sleeve 26 is a solderable material or the X-ray shield lead foil 28 is soldered to the sleeve 26. Is preferred. The sleeve 26 is an independent member that is detachably arranged in the fluorescent tube 12, and may be made of any conductive material such as carbon-containing thread. However, a copper screen with a simple structure is effective and can be soldered, and is suitable for practical applications. From this point of view, the sleeve 26 may be a screen made of rolled copper plate having an overlapping portion in the longitudinal direction. If it is desired to use a Chinese Finger Puzzle-style intrinsic sleeve as the radio frequency shielding sleeve 26, the diameter of which decreases when the ends are pulled, the use of a tube of carbon-containing thread is preferred. This may be a tube made of a synthetic resin material or carbon fiber itself containing carbon to the extent that it becomes electrically conductive with respect to radio frequency energy. In such an example X
To form the lead foil 28 for the wire shield at both ends of the sleeve 26, both ends of the carbon-containing tube are immersed in molten lead,
A deformable collar may be formed at both ends thereof. The sleeve 26 thus formed is attached to the fluorescent tube 12, and when both ends thereof are pulled and stuck to the fluorescent tube 12 without a gap, the end portion made of the lead foil 28 for the X-ray shield is squeezed and wrinkles near the electrode 24. Can be made. One of ordinary skill in the art will be able to devise numerous examples of using the sleeve 26 within the scope of the present invention. This point will be described in more detail later.

The sleeve 26 and the lead foil 28 for the X-ray shield are fixed to the fluorescent tube 12 so that they cannot be removed.
It is possible to sell it as an S fluorescent tube, but when the old fluorescent tube is cut off, it can be detached and attached to the fluorescent tube 12 so that it can be reattached to a new one, or
It is preferable that the standard fluorescent tube 12 is provided as a low-cost accessory, and can be discarded at the same time when the fluorescent tube 12 is cut off.
By doing so, it is possible to reduce the cost with a large facility having a large number of fluorescent lamps, and promote the switching from the standard fluorescent lamp to the RSFS lamp. Two ways to do this are shown in Figure 5.
6 and 7 and 8 respectively.
In the embodiment of FIGS. 5 and 6, the sleeve 26 is a stand-alone type and covers the entire circumference of the fluorescent lamp 12. A strip-shaped lead foil 28 for X-ray shield is mounted around the sleeve 26 at both ends of the fluorescent tube 12 and held in place by removable fixing bands 32. The fixing band 32 may be a rubber band or, if desired, a removable fastener such as a velcro sold under the trade name of Velcro. Although radiation is sometimes reflected by the reflector 16, it is not the preferred embodiment, but in the embodiment of FIGS. 7 and 8, the sleeve 26 is a stand-alone type and the lower portion 180 around the fluorescent lamp 12 is provided.
It covers ゜. A strip of lead foil 28 for the X-ray shield is mounted around the bottom 180 ° of the sleeve 26 at both ends of the fluorescent tube 12 and held in place by removable fixing bands 32.

As will be apparent to those skilled in the art, the above described apparatus of the present invention can be used in standard fluorescent lamps to minimize R cost and labor.
Normal room lights can be modified to take advantage of SFS lights. To get the visible spectrum emission,
The fluorescent tube used for the modification is not a normal room fluorescent tube, but requires a combination of visible spectrum and near-ultraviolet tubes. An ordinary fluorescent lamp device installed on an indoor ceiling uses four fluorescent tubes. Use three visible spectrum tubes and one near-ultraviolet tube in one fluorescent lamp device, or use two adjacent tubes.
In the case of using a single fluorescent lamp device, the visible spectrum and the near-ultraviolet radiation are suitably combined by using seven visible-spectrum tubes and one near-ultraviolet ray tube. You can get almost all of the effects. Although it may not be possible to obtain exactly the same effect as the custom-made RSFS optical lighting device of the prior art (may be obtained in practice), the cost of completely replacing the lighting device is great. It seems that 80% or 90% of the effect of the RSFS lamp is better than not using the device of the invention.

Referring now to FIGS. 9-14, another embodiment of the invention closest to the elements included in the basic RSAF lamp disclosed in the above patent is to a standard visible spectrum and UV fluorescent tube 12. It will be described including the installation process. RSFS
If it is determined that all of these elements are necessary to maximize the effect of the lamp, it is desirable to adopt this embodiment. We do not think there is a need to adopt all these elements. That is, the finned grid of the additional element is not particularly necessary, and this embodiment will be disclosed only in the case where it is determined that there is a need. As in the previous embodiment shown in FIGS. 5 and 6, a radio frequency shielding sleeve 26 is fitted over the entire length of the fluorescent tube 12. A complete tube may be used as in the previous embodiment, or a tube (or a partial tube) formed by rolling the screen of the shielding material. It may also be a suitable member as described below. Finned
A shield tube 34 is fitted over the entire length of the radio frequency shield sleeve 26. The finned shield tube 34 is shown in FIG.
The radio frequency shielding function of the rigid finned grating 18 of the prior art lighting device 10 of FIG. Shielded fin tube 3
4 may be a true tube or a tube (or a partial tube) formed by rolling a sheet of shielding material. Instead of separately attaching to the fluorescent tube 12, the sleeve 26 and the finned shielding tube 34 may be integrally formed and attached to the fluorescent tube 12 in combination. The radio frequency shield sleeve 26 and the finned shield tube 34 are preferably of the Chinese finger puzzle type construction described above so that they can be securely attached to the entire circumference of the fluorescent tube 12. A flexible and easily bendable carbon-containing synthetic resin material may be punched like a synthetic resin protective sleeve used for shipping fruits to obtain desired properties of the finned shield tube 34. it can. The finned shield tube 34 thus formed has a cross section in the longitudinal direction as shown in FIG. 12, in which a plurality of fins 36 radially extend outward from the surface of the fluorescent tube 12 and are emitted in a tangential direction. Shields radiation. The strip-shaped lead foil 28 for the X-ray shield is the fluorescent tube 1.
It is fitted around the sleeve 26 and the finned shield tube 34 at both ends of 2 and is held in place by removable fixing bands 32. As shown in FIG. 14, a ground wire 30 is electrically connected to the radio frequency shielding sleeve 26 and the finned shielding tube 34.

Prior to a description of the preferred construction and materials for the radio frequency shield sleeve 26, a strip of X-ray shield lead foil 28 is held in place, as shown in FIGS. The band 32 'may be a spring biased clamp commonly used to connect a rubber or synthetic hose to a tube or the like. When the knob 38 is pinched as shown by an arrow in FIG. 16, the diameter of the band 32 ′ is expanded so that it can be positioned around the lead foil 28 for the X-ray shield. When the pair of knobs 38 are released, the urging force of the material of the band 32 'is firmly held around the lead foil 28 for the X-ray shield.
Tighten 2 '. The ground wire 30 may be connected to one of the knobs 38. Also, one or two bands 32 'are bonded to the rolled X-ray shield lead foil 28 to form the X-ray shield lead foil 2
8 and band 32 'may be attached and detached at the same time.

As described above, the purpose of determining the implementation method of the present invention is to reduce the cost and labor required for modifying the standard fluorescent tube and the lighting device to obtain the effect of the RSFS lamp. This reduction can encourage the use of RSFS lights and provide the benefits to as many people as possible. If the effects of RSFS lights become legal, it would be in the interest of everyone to develop a device that is easy to comply with the law. Considering these goals, a preferred embodiment of the present invention will be described in detail below with reference to FIGS.

As is well known to those skilled in the art, in many commercial facilities fluorescent lamp lighting devices are simply suspended from the ceiling without enclosures or diffuse panels made of synthetic resin in particular. In such a facility, a transparent safety tube 40 made of synthetic resin is usually attached to the fluorescent tube 12 as shown in FIG. Even if the fluorescent tube 12 is broken, the tube 40 holds most of the glass and the fluorescent tube for safety. The advantages of the invention can be combined with the advantages of the safety tube 40 in a simple and inexpensive way. Radio frequency shielding sleeve 2
6 can be formed on the inner surface of the safety tube 40 as in FIG. Alternatively, it may be formed on the outer surface of the safety tube 40 as shown in FIG. Since the safety tube 40 incorporating the present invention can be easily moved and installed between the plurality of fluorescent tubes 12, the lead foil 28 for the X-ray shield is removed and reused by the method described above.
May be attached to the outer surface of the safety tube 40 or glued to the outer periphery of the safety tube 40 near the electrode 24. The ground wire 30 may be connected using a so-called "pop rivet", or may be a conductive adhesive tape which is a product of 3M Co., Ltd., which is a suitable material described below.

In the above invention, which is the subject of RSFS lights,
As the radio frequency shielding screen 20, an aluminum screen of 64 mesh is disclosed from an experimental example. As mentioned above, commercial RSFS lamps have a grid of conductors silk screened on a synthetic resin diffuser panel as the radio frequency shielding screen 20. The spacing of the silk screened conductors of this grid is about 3/8 inch. As is common in the field of electromagnetic interference (hereinafter EMI) shielding, EMI shielding nets are usually tightly woven copper screens. One problem with using RSFS lamps is that they allow the entire spectrum of wavelengths of light to pass through the RF shielding screen 20, while shielding all harmful RF radiation. However, using conventional technology, it is impossible to achieve these two goals at the same time,
There is no choice but to sacrifice either. If an EMI shielding screen is employed as the radio frequency shielding sleeve 26, it will not pass radio frequency radiation, but will also prevent the passage of light of most wavelengths. Although no actual experiment has been conducted, it is doubtful how much radio frequency energy can be shielded when the conventional 3/8 inch square grid is used as the radio frequency shield sleeve 26.

Indium tin oxide (hereinafter referred to as ITO) is a conductive metal oxide and can be applied to the surface or substrate by sputtering or vapor deposition as is well known. Besides IT
O is transparent. For example, it is often practiced to adhere a polyester substrate coated with ITO to a window in order to transmit visible light and reflect heat-generating light. Infrared and UV blocking materials are included in the polyester substrate, and ITO can be applied to a non-shielding substrate such as polycarbonate to form a conductive surface that transmits all spectrum light. ITO is also a low cost material suitable for the purposes of the present invention, which can be applied to the substrate at a low cost per area. ITO
Is a suitable material for the radio frequency shielding sleeve 26. Figure 1
8, the ITO 42 may be applied directly to the inner surface 44 of the synthetic resin safety tube 40. Figure 1
9, the radio frequency shielding sleeve 26
May be made of ITO 42 applied directly to the outer surface 46 of the synthetic resin safety tube 40, or may be made of ITO 42 applied to a transparent elastic substrate 48 adhered to the outer surface 46 of the synthetic resin safety tube 40. Good. In another method shown in FIG. 20, the radio frequency shielding sleeve 26
Is an ITO 4 coated directly on the outer surface 50 of the fluorescent tube 12.
ITO composed of two or coated on a transparent elastic substrate 48
42, whose substrate 48 is the outer surface 5 of the fluorescent tube 12.
It may be configured to adhere to 0. The transparent elastic substrate 48 adhered to the outer surface 50 of the fluorescent tube 12 is coated with ITO4.
The method of applying 2 is possible at low cost and is particularly suitable in various facilities where the safety tube 40 is unnecessary or not suitable. A resilient adhesive bondable radio frequency shield sleeve 26 is available for modification of the standard fluorescent lamp 12. Due to the low manufacturing and selling prices, the elastic adhesive bondable radio frequency shielding sleeve 26 can also be discarded together when the standard fluorescent lamp 12 to which it is adhered burns out.
As mentioned above, using the conductive adhesive tape, the ground wire 30
Is connected to a metal pad (not shown), and the pad is further connected to the ITO radio frequency shielding sleeve 26 so that the ITO
The radio frequency shielding sleeve 26 can be electrically connected to the ground wire 30.

As is apparent from the above description, the free end of the ground wire 30 is electrically connected to ground at a desired point in a standard fluorescent lamp device equipped with a fluorescent tube 12 modified according to an embodiment of the present invention. It is possible. Generally, the edge (ground) wire of the three-wire type electric device is connected to the case of the fluorescent lamp device. Thus, sheet metal screws or mechanical tapping screws can be used to punch or drill the fluorescent light device to connect the ground wire 30. As shown in FIG. 21, in the present embodiment, the fluorescent device may be provided with a third electrical connection portion. In this case, the radio frequency shielding sleeve 26 is composed of ITO 42 directly coated on the lower surface of the fluorescent phosphor 54 on the inner surface 52 of the fluorescent tube 12. When the fluorescent tube 12 is installed in the fluorescent device, the ITO 42 is electrically connected to the third electrical connection pin 56 that is connected to the above-described third electrical connection portion of the fluorescent device. This latter embodiment, of course, has to be included in the manufacturing process of the fluorescent tube 12 and also requires a different dedicated connection socket for the fluorescent lamp device. However, if almost all new fluorescent lamps are to be used as RSFS lamps in the future, this embodiment would be the most suitable. In such a case, the lead X-ray shield may also be arranged inside the fluorescent tube 12 so as to cover the electrode 24.

Yet another embodiment is shown in FIGS. In this embodiment, the radio frequency and X-ray shield is not installed on the fluorescent tube 12, but is attached to the lighting device 10 as both the radio frequency and X-ray shield 58. The radio frequency and X-ray shield 58 is a radio frequency shield screen 20 '.
It is composed of a pair of J-shaped X-ray shields 60 which also serve as brackets and are connected by. Preferably, the J-shaped X-ray shield 60 that also serves as a bracket is made of lead-plated tern steel, and the radio frequency shielding screen 20 'is made of copper soldered to the J-shaped X-ray shield that also serves as a bracket 60 at both ends. It is a screen, and its copper screen 20 'provides electrical contact between these three members. Bracket combined J
The character-shaped X-ray shield 60 is sized so that it can be mounted around the end of the fluorescent tube 12 without a gap, and is attached to the upper plate 64 of the standard lighting device 10 via the mounting portion 62. The J-shaped X-ray shield 60 that also serves as a bracket is attached to the upper plate 64 by a mechanical tapping screw or a thin plate screw 66 via a mounting portion 62. Since the lighting device 10 is often connected to the ground wire of a three-wire system, the radio frequency and X-ray shield 58 is conveniently connected to ground potential.
Thus, the radio frequency and X-ray shield 58 of FIGS. 22-24 performs several functions when used with a standard fluorescent lamp lighting device and a fluorescent tube. The dual-purpose shield 58 prevents the fluorescent tube 12 from falling if it accidentally comes out of the socket, prevents the fluorescent tube from being damaged, and prevents the glass from falling when it is damaged.
Shields the electrodes to prevent unwanted X-ray radiation and also fluorescent tube 1
2 to shield unwanted radio frequency radiation.

[0024]

As is clear from the above description,
Full spectrum lamps for radiation shielding are most effective,
By incorporating the individual elements of the present invention, it is possible to improve fluorescent lamps without those elements. Use a fluorescent tube or a multi-type fluorescent tube that emits a frequency close to natural sunlight, shield the electrodes of the fluorescent tube to prevent X-ray radiation, shield the fluorescent tube to prevent radio frequency radiation, or combine them. Various effects can be expected.

[Brief description of drawings]

FIG. 1 is a partially cutaway end view of a fluorescent lamp lighting device showing the elements of a prior art radiation shielded full spectrum lamp.

FIG. 2 is a partially cutaway side view of one end of a fluorescent tube showing a short wavelength radiation shield disposed around the electrodes of the radiation shielded full spectrum lamp of FIG.

FIG. 3 of a fluorescent tube fitted with an additional device showing the basic construction of the invention, which makes it possible to obtain almost all the effects of a radiation shielded full spectrum lamp using a standard fluorescent tube and a lighting device. It is a partial cutaway side view.

FIG. 4 is a cutaway side view showing in more detail the apparatus of FIG. 3 according to one embodiment with a shielding screen attached to the outer surface of the fluorescent tube.

FIG. 5 shows the device of FIG. 4 in a first embodiment with the additional device removed when the fluorescent tube is broken and a mounting band added for mounting on a new fluorescent tube.

6 is a cross-sectional view taken along line VI-VI in FIG.

FIG. 7 shows the device of FIG. 4 in a second embodiment with the additional device removed when the fluorescent tube is cut off and a mounting band added to attach to a new fluorescent tube.

8 is a cross-sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a partially cutaway side view showing one end of a fluorescent tube around which a radio frequency shielding screen is provided.

10 is a cross-sectional view of the device of FIG.

FIG. 11 shows the fluorescent tube of FIG. 9 with a finned shield tube added around the radio frequency shield screen.

FIG. 12 is an abbreviated cross-sectional view of a finned shield tube.

13 is a cross-sectional view of the device of FIG.

FIG. 14 is a completed assembly diagram of the present embodiment.

FIG. 15 is a side view of an end portion of a fluorescent tube in which a mounting band is a spring-biased force clamp.

16 is an end view of the device of FIG.

FIG. 17 is a partially omitted cutaway side view of a fluorescent tube provided with the radio frequency shielding screen of the present invention which forms a part of a synthetic resin safety tube disposed around the fluorescent tube.

FIG. 18 is a partially enlarged cutaway side view of one end of the fluorescent tube when the radio frequency shielding screen of the present invention forming a part of the safety tube made of synthetic resin arranged around the fluorescent tube is attached to the inside of the tube.

FIG. 19 is a partially enlarged cutaway side view of one end of the fluorescent tube when the radio frequency shielding screen of the present invention forming a part of the synthetic resin safety tube disposed around the fluorescent tube is attached to the outside of the tube.

FIG. 20 is a partially enlarged cutaway side view of one end of the fluorescent tube when the radio frequency shielding screen of the present invention is directly attached to the outside of the tube.

FIG. 21 is a partially enlarged cutaway side view of one end of a fluorescent tube when the radio frequency shielding screen of the present invention is directly attached to the inside of the tube under the fluorescent material.

FIG. 22 is a cutaway side view of the fluorescent tube with the radio frequency and X-ray shielding screen of the present invention attached to a fluorescent lamp lighting device to cover the fluorescent tube and hold it in place. is there.

FIG. 23 is a side view of the radio frequency and X-ray shielding screen of FIG. 22.

FIG. 24 is an end view of the radio frequency and X-ray shielding screen of FIG. 22.

[Explanation of symbols]

 10 RSFS Light Lighting Equipment 12 Fluorescent Tube 24 Electrode 26 Radio Frequency Shielding Sleeve 28 Lead Foil

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Donald A. Streck USA 93023 Ojai Country Drive, California 832 (72) Inventor Kenneth P.E. Seeda United States California 93101 Santa Barbara Suddi. West Alleraga Street 622

Claims (4)

[Claims] 1. A fluorescent lamp having a working electrode at an end thereof, a fluorescent tube having a predetermined length and a substantially annular cross section, and being held by a fluorescent lamp lighting device, the fluorescent lamp being connected to a ground potential, and between the working electrodes. A conductive radio-frequency shield capable of passing light, which is arranged over the entire length of the fluorescent tube and is provided at least around the fluorescent tube in a portion where light is irradiated toward a light irradiation area. An improved fluorescent lamp apparatus for suppressing unwanted radiation. 2. A fluorescent lamp having a working electrode at an end thereof, a fluorescent tube having a predetermined length and a substantially annular cross section, and being held by a fluorescent lamp lighting device, the fluorescent lamp being connected to a ground potential, and between the working electrodes. A light-transmitting conductive material that is disposed over the entire length of the fluorescent tube and is provided at least around the fluorescent tube in a portion of the direction in which light is emitted toward the area illuminated by the fluorescent lamp. A radio frequency shield and a pair of X-ray shields provided to cover each of the electrodes corresponding to at least the periphery of the fluorescent tube in the direction of light emitted toward the area illuminated by the fluorescent lamp. An improved fluorescent lamp suppressing apparatus which suppresses an undesired radiation. 3. A shield device for use in a fluorescent tube having an actuation electrode at an end, a predetermined length and a substantially annular cross section, for suppressing unwanted emission from the fluorescent tube, the device being connected to ground potential. , Disposed over the entire length of the fluorescent tube between the electrodes, and provided at least around the fluorescent tube in the irradiation direction portion toward the area irradiated by the fluorescent tube, through which light can pass. It is composed of a conductive radio frequency shield and a pair of X-ray shields provided so as to cover each of the electrodes corresponding to at least the periphery of the fluorescent tube in the irradiation direction toward the area irradiated by the fluorescent tube. A shielding device characterized by the above. 4. A tube made of a transparent material having a predetermined length, a pair of closed ends and a substantially annular cross section, a pair of working electrodes provided at each of the closed ends, and a pair of working electrodes. Between the fluorescent phosphor provided on the inner surface of the tube between and to the earth potential, arranged over the entire length of the tube between the working electrodes and towards the area illuminated by the light A conductive radio-frequency shield, which is provided at least around the tube in the irradiation direction and allows light to pass through, and which corresponds to at least the periphery of the tube in the irradiation direction toward the area illuminated by the tube. A radiation-shielding fluorescent tube comprising a pair of X-ray shields provided so as to cover each of the working electrodes.