JP2001015071A - Fluorescent lamp insulating cylinder at low temperature, fluorescent lamp fixture using the same and method for lighting fluorescent lamp tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance illuminance efficiency in temperature characteristics of a fluorescent lamp and to resolve deficiencies such as start failure of the fluorescent lamp at a low temperature and reduce illuminance, etc. SOLUTION: This long fluorescent lamp insulating cylinder 5 contains a UV absorber substantially transmit visible lights having a wavelength longer than 430 nm to a light source for generating lights including ultraviolet rays. A heating element layer is formed on the half peripheral surface part of the inner wall surface part of the insulating cylinder 5. A fixed cap formed with an opening for inserting a fluorescent tube is mounted in the opening of the fluorescent lamp insulating cylinder 5 and a movable cap formed with an opening for inserting the fluorescent tube and slidable in the longitudinal direction of the fluorescent lamp insulting cylinder 5 is mounted in the other opening. A temperature sensor 13 is disposed close to the outer side surface of the fluorescent lamp insulating cylinder 5. A sensor 12 detects the temperature of the outer side surface of the fluorescent lamp insulating cylinder 5 exposed to a cold air and a voltage is supplied for a ballast of a fluorescent lamp.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device such as a fluorescent lamp used in a low-temperature room such as a freezer, a freezer room, or a cold region or in a low-temperature environment.
The present invention relates to a fluorescent lamp insulated tube within a low temperature for eliminating performance degradation and problems of a fluorescent lamp, a fluorescent lamp fixture used therein, and a lighting method thereof.

[0002]

2. Description of the Related Art A conventional general fluorescent lamp is mounted on a ceiling or the like, has a built-in ballast, and has a case body having a terminal receiving portion for holding a fluorescent tube, and a light source for efficiently illuminating the light of the fluorescent tube. And the like.

[0003] Generally, the lighting of a fluorescent lamp is easily affected by the ambient temperature. Therefore, when the ambient temperature decreases, mercury filled in the fluorescent tube condenses and the vapor pressure of mercury decreases.
As the amount of mercury vapor is reduced, radiation cannot be emitted, and the illuminance decreases and the luminous flux decreases. Particularly, in the case of fluorescent lamps provided in low-temperature rooms or low-temperature environments such as freezers and freezer rooms, the normal temperature at which the fluorescent lamps are turned on is good because mercury diffuses when the temperature inside the fluorescent tube is about 18 ° C. Radiation state. However, the room temperature of a freezer or freezer room is-
In the state of 20 ° C., the mercury vapor pressure in the fluorescent tube does not increase, the illuminance decreases, the luminous flux decreases, flickering occurs, and the mercury adhesion causes blackening at the tube end,
Problems such as shortening of the tube life become even more remarkable.

Conventionally, there has been a fluorescent lamp apparatus as shown in FIG. 10 for solving such a problem.
This fluorescent lamp fixture A has a main body part B containing a ballast and the like.
Is provided with a reflection plate C. Terminal receiving portions E of the fluorescent tube D are formed at both ends of the main body portion B.
The fluorescent tube D can be attached to the. Then, an umbrella-shaped heater panel F is mounted on the reflector C near the rear side of the fluorescent tube D, and the fluorescent tube D is lit after being heated by the heater panel F.

As shown in FIG. 11, an arc-shaped cover body G made of polycarbonate is provided between both open ends of the reflector B.
In some cases, the outer peripheral portion of the fluorescent tube D is covered by mounting the fluorescent tube D to protect the fluorescent tube D from cold air and impact.

In order to solve the above-mentioned problems, the applicant has developed a fluorescent lamp heating apparatus used in a low-temperature room as shown in FIG.
126579). According to the present invention, the conductive heating element H is formed in a linear shape or a tape shape, and the conductive heating element H is formed into a fluorescent tube D.
And a metal electrode is provided at an end of the conductive heating element H, and a voltage is applied to the conductive heating element H to generate heat so that the entire fluorescent tube D is heated. It was made.

[0007]

However, in the above prior art, since the reflector C is exposed to the outside and is always in contact with cold air, dust or the like adheres to the reflector C over a long period of use. The reflection efficiency deteriorated. Also,
Even if the fluorescent tube D is heated by mounting the heater panel F, the fluorescent tube side irradiated by the heater panel F is warmed, but the opposite side of the fluorescent tube D, that is, the front side is always exposed to cold air. Therefore, the internal temperature of the fluorescent tube D does not rise sufficiently, the vapor pressure of mercury does not rise, and it becomes difficult to light up, and there is a problem that the illuminance is reduced or flicker occurs. .

Further, in the case where the conductive heating element H is fixed to the glass surface of the fluorescent tube D to keep the temperature of the fluorescent tube D high, it is necessary to replace the heating element every time the fluorescent tube D is replaced. However, there is a problem that the cost is high and the cost is high.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the illuminance efficiency due to the temperature characteristics of a fluorescent lamp in a low-temperature environment, and to eliminate problems such as non-lighting of the fluorescent lamp and low illuminance at low temperatures.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to solve various problems of a conventional fluorescent lamp apparatus and has the following structure. According to a first aspect of the present invention, a fluorescent lamp insulated tube is formed into a long cylindrical shape into which a fluorescent tube is inserted, and a wavelength longer than 430 nm is applied to a light source that generates light including ultraviolet rays. In a low temperature range, a heating element layer is formed on a semicircular portion in the longitudinal direction of the inner wall portion of the fluorescent lamp heat insulating tube, which is formed of a polycarbonate material containing an ultraviolet absorber through which visible light is substantially transmitted. It is a fluorescent lamp insulation tube.

According to the present invention, the fluorescent lamp is formed by a cylindrical heat insulating tube made of polycarbonate which covers the entire fluorescent tube, and is formed so as to contain an ultraviolet absorber which transmits visible light. As an ultraviolet absorber, mixing Iupilon (manufactured by Mitsubishi Engineering-Plastics Corporation) with a polycarbonate material is suitable from the viewpoint of transmittance of visible light and absorptivity of ultraviolet rays and the like. For this reason, since the fluorescent lamp protection tube has a good light transmittance and a good absorption spectrum of ultraviolet and infrared rays with respect to light generated from the light source, visible light is substantially transmitted, but the fluorescent lamp is Thus, it is possible to prevent discoloration of the object such as furniture or equipment illuminated, and to prevent the occurrence of cracks and the like on the cylinder surface even at a low temperature, since it is made of a polycarbonate material.

This heating element layer is a mixture of spherical graphite particles and a synthetic resin, and the surface thereof is covered with an insulating material.
This configuration prevents leakage current and oxidation. By specifying the mixing ratio of the spherical graphite particles and the synthetic resin, when the temperature of the fluorescent tube becomes 10 ° C. or less, the electric resistance decreases,
The current easily flows, and when the temperature rises to 20 ° C. or more, the electric resistance sharply increases. That is, when the vapor pressure of mercury in the fluorescent tube reaches a suitable temperature, the heat generation of the planar heating element layer is weakened, and when the temperature in the fluorescent tube is lowered, the heat generation of the planar heating element layer is increased. .

According to a second aspect of the present invention, a heating element layer formed on a semicircular surface in the longitudinal direction of the inner wall surface of the fluorescent lamp heat insulating cylinder is formed by laminating a heat insulating material, a heating element and a reflector. The fluorescent lamp warm cylinder in a low temperature according to claim 1, wherein:

The present invention is characterized in that the heating element layer of the first invention is formed in a laminated state of a three-layer structure of a heat insulating material, a heating element and a reflector. In other words, a heat insulating material such as urethane material is formed on the fluorescent lamp heat insulating tube side to increase the heat insulating power, and the inner heating element layer is formed on a planar heating element which is a special heater. A reflector for heightening is formed. The reflection plate is formed by laminating an aluminum plate and a transparent resin. By bending the aluminum reflector, interference fringes are formed on the aluminum plate surface and the reflection efficiency is reduced. However, by sticking a transparent resin film to the aluminum plate, the reflection efficiency can be prevented from lowering. At the same time, the heat generation efficiency of the heating element layer is improved.

As described above, the entire fluorescent lamp insulated tube has a four-layer structure, so that the internal temperature of the fluorescent lamp insulated tube is 18 ° C. even in a low temperature environment (−20 ° C.). . The luminous efficiency of the fluorescent lamp becomes maximum when the ambient temperature is about 20 ° C. in relation to the vapor pressure of mercury.

[0016] A third invention to be patented is a case body having a ballast and the like built therein and having a terminal receiving portion for holding a fluorescent tube, and a reflector for efficiently illuminating the light of the fluorescent tube. Is attached to the light source, which is formed into a long cylindrical shape having an opening and into which a fluorescent tube is inserted, and which emits light containing ultraviolet light at 430n.
a fluorescent lamp protection tube made of a polycarbonate material containing an ultraviolet absorbent that substantially transmits visible light having a wavelength longer than m, and heat generation in a laminated state on a longitudinal half-circumferential surface portion of the inner wall portion of the fluorescent lamp heat insulating tube. A body cap is formed, and a fixing cap having an insertion opening for the fluorescent tube and an insertion opening for the fluorescent tube are provided at the opening of the fluorescent lamp insulated tube, and the sliding cap is provided in the longitudinal direction of the fluorescent lamp insulated tube. A movable cap is attached to each of the movable caps, and a temperature sensor is provided on the case body in the vicinity of the outer surface of the fluorescent lamp insulated tube, and the temperature of the outer surface of the fluorescent lamp insulated tube exposed to the outside air by the sensor is provided. And a voltage is supplied to the ballast of the case body to provide a fluorescent lamp fixture using a fluorescent lamp warm cylinder in a low temperature range.

According to the present invention, a fluorescent lamp apparatus is constituted by using the fluorescent lamp heat-retaining tube in the low temperature of the first and second inventions, and is particularly suitable as a fluorescent lamp apparatus used in a low-temperature room. Things. In this fluorescent lamp device, a planar heating element that generates heat in itself is used instead of the conventional electric heater, and an environmental temperature necessary for lighting the fluorescent lamp is secured. Further, as a characteristic of the heating element, the electric resistance decreases with an increase in the amount of heat generated by itself, so that the power consumption decreases with time and reaches a saturation point. As a result, power consumption is reduced while maintaining the environmental temperature required for lighting.

Further, since a fixed cap is attached to one side of the fluorescent lamp protective tube having an opening, and a slidable movable cap is attached to the other side, it is easy to insert a straight tube type fluorescent tube, and , It is hard to come off. In addition, when the fluorescent tube is inserted and attached to the terminal receiving portion of the fluorescent lamp main body, the ends of both caps of the fluorescent lamp protecting tube abut against both terminal receiving portions of the fluorescent lamp main body, respectively. The inside is in a closed state, so that no cool air enters the heat retaining cylinder, and the heat generation efficiency is also good.

Since the case body is provided with a temperature sensor close to the outer surface of the fluorescent lamp heat insulating tube,
The temperature of the outer surface of the fluorescent lamp insulation tube is detected, and a voltage is supplied to the ballast of the fluorescent lamp to light the lamp. This is when the ambient temperature is -20
In a freezer at a temperature of, for example, the fluorescent lamp warming tube is heated by a heating element layer, the temperature is sensed and detected by a temperature sensor, and a voltage is supplied to a fluorescent lamp ballast to provide an outer portion of the warming tube. When the temperature reaches 0 ° C., the temperature inside the heat retaining cylinder becomes 18 ° C.

That is, when the temperature inside the heat retaining cylinder is a constant 18
The temperature of the heater of the heating element layer is adjusted to be in ° C. This planar heating element layer has the property of increasing resistance when it reaches the set temperature, making it difficult for current to flow.By using this characteristic, input switching was performed with a thermostat using a normal nichrome wire etc. The power saving effect is much different from the case.

According to a fourth aspect of the present invention, a temperature sensor is provided in the case body of a fluorescent lamp fixture near the outer surface of a fluorescent lamp heat-insulating cylinder, and the temperature sensor is used to protect the low-temperature outside air. Detects the temperature of the outer surface of the fluorescent tube that is exposed, and supplies voltage to the ballast of the case body when the temperature of the outer surface reaches 0 ° C to turn on the fluorescent lamp. This is a method for lighting a fluorescent lamp appliance using a fluorescent lamp heat retaining tube in a low temperature range. For this reason, the power saving effect becomes remarkable as compared with the conventional case where the input of the heating element is switched by using a thermostat.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fluorescent lamp insulated tube at a low temperature according to the present invention and a fluorescent lamp fixture using the same. FIG. 1 is a perspective view of a fluorescent lamp insulated tube in a low temperature according to the first invention and the second invention, FIG. 2 is an explanatory view of a principle of operation of a fluorescent lamp device at a low temperature, and FIG. FIG. 4 is a cross-sectional view for explaining the operation of a fluorescent lamp fixture having a fluorescent lamp insulated tube in a low temperature according to the third invention, and FIG. 5 is a cross-sectional view of the fluorescent lamp insulated tube. FIG. 6 is a longitudinal sectional view showing a state in which the fluorescent lamp is inserted and attached to a fluorescent lamp, and FIG. 6 is a longitudinal sectional view of a movable cap of the fluorescent lamp warm cylinder.

In FIG. 1, reference numeral 1 denotes a case body of a fluorescent lamp fixture in which a ballast and the like are built.
Is provided with a reflector 2 for efficiently irradiating light from a light source. The terminal receiving portions 3a and 3b of the fluorescent tube 4 are formed to extend from both ends of the case body 1. Further, a straight tube type fluorescent tube 4 is attached between the terminal receiving portions 3a and 3b so as to be surrounded by the reflection plate 2.

Reference numeral 5 denotes a long fluorescent lamp insulating tube which is inserted between the terminal receiving portions 3a and 3b by inserting the fluorescent tube 4 of a straight tube type. The fluorescent lamp insulating tube 5 covers the entire fluorescent tube 4. It is formed using a cylindrical heat-insulating cylinder made of polycarbonate as described above, and contains an ultraviolet absorber that transmits visible light. Iupilon (Mitsubishi Engineering Plastics)
It is also suitable to use visible light transmittance and ultraviolet light absorption.

Since the fluorescent lamp warming tube 5 contains an ultraviolet absorber, the amount of ultraviolet light having a wavelength of 300 nm to 400 nm leaking from the fluorescent lamp warming tube 5 to the outside is reduced, and the light generated from the light source is reduced. 7 and 8, the absorption spectra of ultraviolet rays and infrared rays are good while the light transmittance is good.
And visible light is substantially transmitted, but prevents discoloration of objects such as furniture and equipment illuminated by the fluorescent tube 4 and suppresses the cause of insect collection by flying insects. Can be. In addition, the length and diameter of the fluorescent lamp warming tube 5 are of course formed so as to match the size of the fluorescent tube 4.

On the inner wall surface portion 5a of the fluorescent lamp heat insulating cylinder 5,
A heating element layer 6 is formed on a semi-peripheral surface portion on the rear surface side (irradiation surface side) in the longitudinal direction, and a heat insulating material 7 made of urethane material or the like so as to contact with the innermost wall surface portion 5a, which is the outermost surface, to increase the heat insulating power. And a heating element 8 is formed inside the heating element 8. The heating element 8 is formed as a planar heating element which is a special heater, and a reflection plate 9 is formed on the innermost side facing the fluorescent tube 4. Have been.

The heating element 8 is formed as a planar heating element. The heating element 8 is formed by mixing spherical graphite particles and a synthetic resin, and covering the surface with an insulating material to prevent leakage current and oxidation. Have been. By specifying the mixing ratio of the spherical graphite particles and the synthetic resin, when the temperature in the fluorescent tube 4 becomes 10 ° C. or less, the electric resistance decreases, the current easily flows, and the temperature becomes 20 ° C. or more. As the resistance increases, the electric resistance rapidly increases. That is, when the vapor pressure of mercury in the fluorescent tube 4 reaches a suitable temperature, the calorific value of the heating element layer 6 decreases, and when the temperature in the fluorescent tube 4 decreases, the calorific value of the planar heating element layer 6 increases. It has the characteristic.

The reflection plate 9 is formed by laminating an aluminum plate and a transparent resin. By bending the aluminum reflector, interference fringes are formed on the aluminum plate surface and the reflection efficiency of the reflector 9 is reduced. However, a reduction in the reflection efficiency is prevented by attaching a transparent resin film to the aluminum plate. And the thermal efficiency of the planar heating element 8 is improved.

As described above, both ends of the fluorescent lamp insulating tube 5 are open, but a fixed cap 10 having an opening 10a for the fluorescent tube 4 is attached to one end. At the other end, an insertion opening 11a for the fluorescent tube 4 is formed, and a movable cap 11 slidable in the longitudinal direction of the fluorescent lamp protection tube 5 is attached.

When the fluorescent tube 4 is inserted through the insertion opening of the fluorescent lamp heat insulating tube 5, the movable cap 11 slides in the longitudinal direction, so that the fluorescent tube 4 can be easily inserted. Then, the inserted fluorescent lamp protection tube 5 is connected to the terminal receiving portions 3a, 3a of the case main body 1.
3b, the fixing cap 10 of the fluorescent lamp insulation tube 5
And the other movable cap 11 is slid, and the two terminal receiving portions 3a, 3b of the case body 1 are respectively moved.
In close contact. As a result, the inside of the heat insulation of the fluorescent lamp is closed, and no cool air enters the heat insulation tube 5, and the heat generation efficiency is improved. In addition, at the end of the heat retaining cylinder 5, a cord lead-out hole 5d for an electrode of the heating element layer 6 is formed.

The case body 1 is provided with a temperature sensor 8 close to the outer surface of the fluorescent lamp heat insulating cylinder 5. This temperature sensor 12 detects the temperature of the outer surface of the fluorescent lamp warm cylinder 5 that is exposed to cool air within a low temperature. This is because, when the ambient temperature in the low temperature is -20 ° C. and the fluorescent lamp heat retaining tube 5 is heated by the heating element layer 6, the temperature is sensed and detected by the temperature sensor 8, and the temperature is detected by the ballast of the case body 1. This is because when the voltage is supplied and the outside surface of the fluorescent lamp heat retaining tube 5 reaches 0 ° C., the temperature inside the fluorescent lamp heat retaining tube 5 becomes 18 ° C. That is, when the temperature inside the fluorescent lamp heat insulating tube 5 is a constant 1
The heater temperature of the heating element layer 6 is adjusted to 8 ° C. This planar heating element layer 6 has the characteristic of increasing the resistance when it reaches the set temperature as described above, and has the characteristic of making it difficult to flow current. By utilizing this characteristic, it is possible to use a conventional nichrome wire or the like as in the past. Therefore, the power saving effect is much different from the case where the input is switched by the thermostat.

Regarding the power saving effect, the power consumption, the current and the illuminance are compared between the case where the fluorescent lamp according to the present invention is used and the case where the low temperature fluorescent lamp using the conventional electric heater is used. As shown in the graph of FIG. 9, the power consumption can be reduced by 15 to 20%, and the current consumption is 2%.
It can be reduced by 0-30% and the illuminance can be increased by 20-30%. In addition, it can be used in combination with a conventional general fluorescent lighting device, so that it is inexpensive. In particular, conventional low-temperature fluorescent lamps use an electric heater to maintain the lighting environment temperature, so they consume a large amount of power. In addition, they are less expensive than general fluorescent lamps, so they are expensive. However, it can be improved by the fluorescent lamp apparatus of the present invention.

[0033]

According to a first aspect of the present invention, a fluorescent lamp heat-insulating cylinder is molded into a long cylindrical shape into which a fluorescent tube is inserted, and a light source for generating light containing ultraviolet rays is 430n.
It is formed of a polycarbonate material containing an ultraviolet absorbent that allows visible light having a wavelength longer than m to substantially pass therethrough, and a heating element layer is formed on a half-circumferential surface in the longitudinal direction of the inner wall surface of the fluorescent lamp heat insulating tube. It is a fluorescent lamp insulation tube in a low temperature range.

For this reason, the fluorescent lamp heat insulating tube has a good light transmittance and a good absorption spectrum of ultraviolet and infrared rays with respect to the light generated from the light source, so that visible light is substantially transmitted. Can be prevented from being discolored on objects such as furniture and equipment illuminated by the fluorescent lamp. Further, the heating element layer has a characteristic that when the vapor pressure of mercury in the fluorescent tube reaches a suitable temperature, the heat generation of the heating element layer becomes weak, and when the temperature in the fluorescent tube becomes low, the heat generation of the heating element layer becomes strong. In addition, the lighting environment of the fluorescent lamp that covers the entirety of the fluorescent lamp warm cylinder used in the low-temperature room can be favorably maintained.

In the second invention to be patented, a heating element layer formed on a semicircular surface in the longitudinal direction on the inner wall surface of the fluorescent lamp heat insulating cylinder is formed by laminating a heat insulating material, a heating element and a reflector. Since the fluorescent lamp insulated tube according to claim 1 is characterized in that, when the vapor pressure of mercury in the fluorescent tube reaches a suitable temperature, the heat generating layer weakens the heat generated by the heat generating layer, so that the heat generating layer in the fluorescent tube is weakened. It has the characteristic that the heat generated by the heating element layer increases when the temperature decreases, and the reflection efficiency can be increased by the reflection plate inside the heating element layer to prevent a decrease in the reflection efficiency. Heat generation efficiency of the layer is also good

By forming the half-peripheral surface of the inner wall surface of the fluorescent lamp heat-insulating tube into a four-layer structure in this way, it can be used at low temperatures (-20 ° C.).
In such an environment, the interior temperature of the fluorescent lamp heat retaining tube is designed to be 18 ° C. The luminous efficiency of the fluorescent lamp becomes maximum when the ambient temperature is about 20 ° C. in relation to the vapor pressure of mercury.

A third invention to be patented is a case body having a ballast and the like built therein and having a terminal receiving portion for holding a fluorescent tube, and a reflector for efficiently illuminating the light of the fluorescent tube. Is attached to a fluorescent lamp device, which has an opening, is formed into a long cylindrical shape into which a fluorescent tube is inserted, and has a wavelength of 430n with respect to a light source that generates light including ultraviolet rays.
a fluorescent lamp heat-insulating cylinder formed of a polycarbonate material containing an ultraviolet absorber through which visible light having a wavelength longer than m is substantially transmitted, and heat generation in a laminated state on a half-peripheral surface portion of the inner wall surface of the fluorescent lamp heat-insulating cylinder in the longitudinal direction. A body cap is formed, and a fixing cap having an insertion opening for the fluorescent tube and an insertion opening for the fluorescent tube are provided at the opening of the fluorescent lamp insulated tube, and the sliding cap is provided in the longitudinal direction of the fluorescent lamp insulated tube. A movable cap is attached to each of the movable caps, and a temperature sensor is provided on the case main body in proximity to the outer surface of the fluorescent lamp insulated tube, and the temperature of the outer surface of the fluorescent lamp insulated tube exposed to outside air by the sensor is provided. And a voltage is supplied to the ballast of the case body to provide a fluorescent lamp fixture using a fluorescent lamp warm cylinder in a low temperature range.

The present invention is particularly suitable as a fluorescent lamp apparatus used in a low-temperature room. Instead of a conventional electric heater, a planar heating element layer which generates heat is used, and an environment necessary for lighting the fluorescent lamp is used. The temperature is secured. In addition, as a characteristic of the heating element, the electric resistance decreases with an increase in the amount of heat generated by the element itself, and the power consumption decreases with time and reaches a saturation point. This leads to a reduction in electric power, and the inside of the fluorescent lamp heat insulating cylinder is closed, so that cool air does not enter the heat insulating cylinder and the heat generation efficiency is good.

According to a fourth aspect of the present invention, a temperature sensor is provided in the case body of a fluorescent lamp fixture near the outer surface of a fluorescent lamp heat insulating tube, and the temperature sensor is used to protect the low-temperature outside air. Since the temperature of the outer surface of the exposed fluorescent lamp insulation tube was detected, and when the temperature of the outer surface reached 0 ° C, voltage was supplied to the ballast of the case body to turn on the fluorescent lamp, As compared with the conventional case where the input of the heating element is switched using a thermostat, there is a difference in the power saving effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fluorescent lamp protection tube in a low temperature range according to a first invention and a second invention.

FIG. 2 is an explanatory view of the principle that a fluorescent lamp device operates at a low temperature. FIG. 6 is a longitudinal sectional view of the movable cap of the fluorescent lamp heat insulating tube, and is an explanatory view of the principle that the fluorescent lamp device according to the present invention operates at the outside air temperature.

FIG. 3 is a circuit configuration diagram of the fluorescent lamp device according to the present invention.

FIG. 4 is a cross-sectional view for explaining the operation of the fluorescent lamp fixture to which the fluorescent lamp warm cylinder is attached at a low temperature according to the third invention.

FIG. 5 is a partially cut-away longitudinal sectional view showing a state in which a fluorescent tube is inserted into the fluorescent lamp heat retaining tube and mounted on the fluorescent lamp.

FIG. 6 is a vertical sectional view of a movable cap of the fluorescent lamp heat insulating cylinder.

FIG. 7 is a graph showing an ultraviolet absorption spectrum of a fluorescent lamp warm cylinder.

FIG. 8 is a graph showing an infrared absorption spectrum of a fluorescent lamp warm cylinder.

FIG. 9 is a graph comparing power consumption, current, and illuminance in a case where the fluorescent lamp apparatus according to the present invention is used and in a case where a low-temperature fluorescent lamp apparatus using a conventional electric heater is used.

FIG. 10 is a cross-sectional view showing a conventional fluorescent lamp device.

FIG. 11 is a cross-sectional view showing another conventional fluorescent lamp device.

FIG. 12 is a circuit diagram showing another conventional fluorescent lamp heating device, which is a rapid start type lighting circuit configuration diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 2 Reflector 4 Fluorescent tube 5 Fluorescent lamp insulation tube 6 Heating element layer 7 Heat insulating material 8 Heating element 9 Reflector 10 Fixed cap 11 Movable cap 12 Temperature sensor

Claims (4)

[Claims] 1. A fluorescent lamp insulation tube is formed into a long cylindrical shape into which a fluorescent tube is inserted, and a visible light having a wavelength longer than 430 nm is substantially transmitted to a light source generating light including ultraviolet rays. A fluorescent lamp heat insulating tube at a low temperature, characterized in that a heating element layer is formed on a half-peripheral surface portion of the inner wall surface of the fluorescent lamp heat insulating tube in the longitudinal direction. 2. The heating element layer formed on a half-peripheral surface in the longitudinal direction of the inner wall surface of the fluorescent lamp heat insulating cylinder is formed by laminating a heat insulating material, a heating element, and a reflector. Fluorescent tube at low temperatures. 3. A fluorescent lamp apparatus including a ballast and the like, a case body having a terminal receiving portion for holding a fluorescent tube, and a reflector for efficiently illuminating the light of the fluorescent tube. With respect to a light source that has an opening and is formed into a long cylindrical shape into which a fluorescent tube is inserted and generates light including ultraviolet light,
a fluorescent lamp insulation tube formed of a polycarbonate material containing an ultraviolet absorber that substantially transmits visible light having a wavelength longer than nm, and heat generation in a stacked state on a half-peripheral surface in the longitudinal direction of the inner wall surface of the fluorescent lamp insulation tube. Forming a body layer, in the opening of the fluorescent lamp insulation tube, with a fixed cap having a fluorescent tube insertion opening, and having a fluorescent tube insertion opening,
A movable cap that is slidable in the longitudinal direction of the fluorescent lamp insulation tube is attached to each, and a temperature sensor is provided on the case body in proximity to the outer surface of the fluorescent lamp insulation tube, and the sensor is exposed to the outside air by the sensor. A fluorescent lamp fixture using a fluorescent lamp heat-insulating tube in a low temperature, wherein a temperature of an outer surface of the fluorescent lamp heat-insulating tube is detected to supply a voltage to a ballast of a case body. 4. A fluorescent lamp fixture case body is provided with a temperature sensor in the vicinity of the outer surface of the fluorescent lamp heat insulating cylinder, and the temperature sensor is provided outside the fluorescent lamp heat insulating cylinder exposed to low-temperature outside air. Detecting the temperature of the side surface, and when the temperature of the outer surface reaches 0 ° C., supplying a voltage to the ballast of the case body to turn on the fluorescent lamp, characterized in that the fluorescent lamp is kept at a low temperature. Lighting method for fluorescent lighting fixtures using tubes.