JPH09330613A - Fluorescent lamp unit, reader, oa apparatus, back light unit, indicator, and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat up by supporting a fluorescent lamp strongly to shock, and facilitating the close contact of a heater with the fluorescent lamp. SOLUTION: A fluorescent lamp 1 is accommodated in a trough-shaped unit support 2, and a lamp support 3 consisting of translucent or light reflective synthetic resin is arranged between the fluorescent lamp 1 and the unit support 2, along the main part at least in the longitudinal direction of the fluorescent lamp 1. Furthermore, if necessary, a heater is put between the fluorescent lamp 1 and the unit support 2, and the fluorescent lamp 1 is fixed to the unit support by a fixing means. The fluorescent lamp 1 becomes resistant to shock because at least the main part is supported by the unit support 2 through the lamp support 3. The lamp support 3 is made translucent, and the inner face of the support member is made light-reflective. Or, making the lamp support 3 light- reflective will make the lamp support 3 work as a reflector.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp unit, a reading device using the same, an OA equipment, a backlight unit, a display device and a lighting device.

[0002]

2. Description of the Related Art A small cold cathode fluorescent lamp is used for reading and a liquid crystal backlight. In this case, it is general that a fluorescent lamp is housed in a reflector to form a fluorescent lamp unit, and more light is condensed and used in a desired direction.

FIG. 13 is an enlarged sectional view showing an example of a fluorescent lamp unit used in a conventional backlight device.

FIG. 14 is a front view of the same.

In these drawings, 31 is a small cold cathode fluorescent lamp conceptually shown, 32 is a gutter-shaped elongated reflector, and both ends of the fluorescent lamp 31 are reflected by silicone resin members 33, 33. The fluorescent lamp 31 is housed and fixed in the body 32 while keeping the tube axis of the fluorescent lamp 31 parallel to the longitudinal direction. Although not shown, as another configuration, as disclosed in, for example, JP-A-5-307177, rubber caps are attached to both ends of the fluorescent lamp, and the rubber caps are fixed to the reflector by an appropriate means such as a binding band. Some do.

Further, a heater may be provided outside the fluorescent lamp in order to improve the rising of the luminous flux at low temperatures. In order to attach the heater to the fluorescent lamp, in many cases, the fluorescent lamp and the heater are surrounded by a heat-shrink tube, and the tube is shrunk to bring the heater into close contact with the fluorescent lamp.

[0007]

Since the conventional fluorescent lamp unit has a structure in which both ends of the fluorescent lamp are supported and fixed in the reflector, the fluorescent lamp unit is dropped when some stress is applied during its assembly or during use. There is a drawback that the fluorescent lamp easily breaks due to impacts such as.

Further, the heat-shrinkable tube used for closely attaching the heater to the fluorescent lamp has a problem that the effective light amount of the fluorescent lamp unit is obviously reduced because its light transmittance is not necessarily high. In addition, the heat-shrinkable tube may be deteriorated by ultraviolet rays or short-wavelength visible light emitted from the fluorescent lamp, and the light transmittance and / or the mechanical strength may be significantly reduced.

An object of the present invention is to provide a fluorescent lamp unit that strongly supports a fluorescent lamp against impact, a reading device, an office automation equipment, a backlight unit, a display device and a lighting device using the fluorescent lamp unit.

Another object of the present invention is to further improve the heat up by facilitating the close contact of the heater with the fluorescent lamp, the reader using the same, the OA equipment,
It is to provide a backlight unit, a display device, and a lighting device.

[0011]

A fluorescent lamp unit according to the present invention comprises a fluorescent lamp; a trough-shaped unit support member for accommodating at least a main part of the fluorescent lamp therein; A lamp support made of a translucent or light-reflecting synthetic resin for supporting the fluorescent lamp by interposing the fluorescent lamp and the unit support along the main part; fixing means for fixing the fluorescent lamp to the unit support It is characterized by having and;

In claim 1 and the following claims,
The definitions and technical meanings of terms are as follows.

The fluorescent lamp is preferably a cold cathode type, but a hot cathode type is also acceptable if necessary. This fluorescent lamp has a well-known structure, but a transparent glass bulb, a pair of electrodes sealed at both ends of the glass bulb, a phosphor layer formed on the inner surface side of the glass bulb, and mercury enclosed in the glass bulb. And a discharge medium containing a rare gas such as argon gas Ar. In addition, a protective film containing alumina Al ₂ O ₃ or the like as a main component may be formed between the glass bulb and the phosphor layer, if necessary. The low temperature characteristics may be improved by using xenon Xe gas as a rare gas to cause ultraviolet emission by xenon gas discharge and ultraviolet emission by low-pressure mercury vapor. further,
As the rare gas, neon Ne, krypton Kr alone, or a mixed gas of argon and neon, or argon, neon and helium can be used. The fluorescent lamp may be of a so-called aperture type having a light extraction opening, or may be of a non-aperture type that emits light in the entire circumferential direction.

When a fluorescent lamp is used for reading a backlight unit or a facsimile, a fluorescent lamp having a tube inner diameter of 1 to 10 mm is generally used. In the present invention, the above-mentioned tube diameter is also used. However, the inner diameter of the tube is not limited to the above range, because the effect of the present invention is exhibited in other applications. The tube length is arbitrary depending on the device used, but for example, when reading an A4 size document for reading, it can be selected to be 270 mm in order to secure a light emission length of 220 mm.

Further, the fluorescent lamp is not limited to a straight tube type, but may be bent into any desired shape such as a ring shape, an L shape, a U shape, a W shape, an H shape or a saddle shape.

Further, other constructions of the fluorescent lamp will be described below.

The bulb is allowed to be made of soda lime glass, borosilicate glass, quartz glass, translucent ceramics, or the like.

Any desired phosphor may be used. For example, a rare earth phosphate phosphor (LaPO ₄ : C) may be used.
For example, a monochromatic phosphor such as e ₃ ⁺ , Tb ₃ ⁺ ) or a phosphor containing the same can be used.

Next, the gutter-shaped unit support will be described. The unit support may or may not serve to house at least a major portion of the fluorescent lamp therein and to support the unit when the fluorescent lamp unit is incorporated into a device. Further, it is preferable that the inner surface is reflective, but a material having no reflective property is also allowed. When the inner surface of the unit support is to be reflective, the inner surface shape can be a paraboloidal surface, a spherical surface, or the like that facilitates light collection. Further, the gutter-like shape is not expressed in the sense that the shape is limited, and it is sufficient that the gutter-like shape has a function of housing at least a main part of the fluorescent lamp.

Further, the unit support is not limited to a particular material, and may be a metal, a synthetic resin molded body or a film body. For example, it can be composed of a synthetic resin film and a highly reflective coating formed on the inner surface thereof, for example, a vapor deposition film of silver or aluminum.

Next, the lamp support will be described. The lamp support has only to support the fluorescent lamp by being interposed between the fluorescent lamp and the unit support along at least the main part in the longitudinal direction of the fluorescent lamp, and is not necessarily integral with the fluorescent lamp or the unit support or both. It does not need to be integrated, but may be integrated. The integration means that the lamp support is formed by casting a synthetic resin together with the fluorescent lamp and the unit support, or the fluorescent lamp and / or the unit support is separately prepared and adhered by an adhesive. It means that it is integrally configured by things.

The light-transmitting property of the molded synthetic resin means that it is a synthetic resin having transparency or light diffusion property. Similarly, the light reflectivity can be realized by a transparent synthetic resin or the like in which a fine metal powder having a white or high reflectivity is mixed. Silicon can be used as the light-transmitting and light-reflecting synthetic resin, but the present invention is not limited thereto.

Next, the fixing means will be described. This fixing means may be any means as long as it can fix the fluorescent lamp to the unit support. Therefore, the fixing means does not have to be a separate body from the lamp support, and the lamp support can also serve as the fixing means. For example, if it is integrated with the fluorescent lamp, the lamp support and the support member, the synthetic resin support member can also serve as the fixing means.

Thus, in the present invention, since at least the main part of the fluorescent lamp is supported by the lamp support, the fluorescent lamp is hard to break even when it is impacted during assembly or handling. Further, since the lamp support is translucent or light reflective, the light emitted from the fluorescent lamp is transmitted through the lamp support to the unit support when the synthetic resin support is translucent. Incident. Therefore, if the inner surface of the unit support is made reflective, light is reflected by the inner surface of the unit support and is guided forward. When the lamp support is light-reflecting, the light from the fluorescent lamp is reflected by the surface of the lamp support and is guided forward.

According to the fluorescent lamp unit of the invention of claim 2,
A fluorescent lamp; a trough-shaped unit support member for accommodating at least a longitudinal main part of the fluorescent lamp; a fluorescent lamp interposed between the fluorescent lamp and a support member along at least a longitudinal main part of the fluorescent lamp A lamp support made of a translucent or light-reflecting synthetic resin supporting the lamp; a fluorescent lamp and a heater sandwiched between the lamp supports; and means for fixing the fluorescent lamp to the unit support. It is characterized by having;

In the present invention, the heater need only have at least a portion interposed between the fluorescent lamp and the lamp support, and can have any structure or shape such as a ribbon shape.

According to the present invention, in addition to the effect of the first aspect, it becomes easy to support the heater so as to be in close contact with the outer surface of the fluorescent lamp, and thus the heat-up time of the fluorescent lamp is shortened.

Further, if the heater is covered with the lamp support, the heat of the heater efficiently acts on the temperature rise of the fluorescent lamp, so that heat-up is further promoted.

According to the fluorescent lamp unit of the invention of claim 3,
The fluorescent lamp unit according to claim 1 or 2,
The unit support is characterized in that at least the inner surface is formed to be light reflective.

In the present invention, since the unit support also functions as a reflector of the fluorescent lamp, the effective light amount can be increased.

According to the fluorescent lamp unit of the invention of claim 4,
In the fluorescent lamp unit according to any one of claims 1 to 3, the support member is characterized in that at least the inner surfaces of both edge portions are formed to be light reflective.

When the opening diameters on both edges of the support member are reduced, the reflection on both edges of the support member becomes relatively important. Therefore, it is effective to make the fluorescent lamp unit effective only by making this portion light reflective. The amount of light can be increased.

According to the fluorescent lamp unit of the invention of claim 5,
In the fluorescent lamp unit according to any one of claims 1 to 4, the lamp support is formed by casting a synthetic resin between the unit support and the fluorescent lamp.

The fluorescent lamp is floated and supported inside the unit support, both ends of the unit support are covered, and a synthetic resin in a liquid state is cast between the fluorescent lamp and the unit support. The fluorescent lamp unit of the present invention can be obtained by solidifying the synthetic resin.
The fluorescent lamp may be completely embedded, or a part of the fluorescent lamp, for example, about half may be exposed.

In the case of casting, the lamp support may cover the fluorescent lamp up to about half the tube diameter. Then, even if the unit support is relatively close to the fluorescent lamp, both edge portions of the unit support facing the front half of the fluorescent lamp contribute to light reflection, so that a sufficient light condensing action is exhibited.

On the contrary, when the lamp support covers the fluorescent lamp up to about ⅔ or more, it is possible to effectively prevent the light output of the fluorescent lamp from being changed by the influence of the rapid change of the outside temperature and the wind. There is an action. In this case, if the lamp support is made light-reflecting, the light emitted from the fluorescent lamp toward the lamp support is reflected by the lamp support and is emitted from the exposed portion, so that the fluorescent lamp has an aperture shape. To increase the light output.

When a heater is used, it may be temporarily fixed to the fluorescent lamp or the lamp support in advance,
The heater may be attached while pressing it against the fluorescent lamp or the lamp support.

According to the fluorescent lamp unit of the invention of claim 6,
The fluorescent lamp unit according to any one of claims 1 to 5, wherein the lamp support is preformed and fitted between the unit support and the fluorescent lamp.

In the present invention, the fluorescent lamp unit can be obtained by sequentially stacking the unit support, the lamp support and the fluorescent lamp.

According to the fluorescent lamp unit of the invention of claim 7,
In the fluorescent lamp unit according to any one of claims 1 to 6, the lamp support is made of a transparent synthetic resin.

In the present invention, since the lamp support is made of transparent synthetic resin, the inner surface of the unit support has a reflector shape, and a film of a high reflectance material is formed on the inner surface to form a reflector. In this case, the lamp support does not interfere with the reflection of the inner surface of the unit support, so that the effective light amount is increased and the fluorescent lamp is protected from shock and stress.

According to an eighth aspect of the present invention, in the fluorescent lamp unit according to any one of the first to seventh aspects, the fixing means is formed by casting synthetic resin on both ends of the fluorescent lamp. Is characterized by.

In the present invention, the lamp support may be separately prepared in advance, or may be formed by casting together with the unit support. In any case, since both ends of the fluorescent lamp are formed by casting synthetic resin, the structure is simple and the work is easy. An oxime-based silicone resin can be used as the synthetic resin.

According to a ninth aspect of the present invention, there is provided a reading device including: a reading device main body; and the fluorescent lamp unit according to any one of claims 1 to 8, which is housed in the reading device main body and used as a reading light source. It is characterized by

According to the present invention, it is possible to obtain a reading device having the operation according to any one of the first to eighth aspects of the invention. The reading device can be used for various OA devices described later.

The OA equipment according to the invention of claim 10 is provided in an OA equipment body; and at a required position of the OA equipment body.
And a reading device as described above;

The OA equipment includes a copying machine, a scanner,
Applicable to facsimiles.

A backlight unit according to an eleventh aspect of the present invention includes the fluorescent lamp unit according to any one of the first to eighth aspects; arranged so that light emitted from the fluorescent lamp unit is introduced from the side and led out from the front. Installed light guide means; and light control means for controlling light emitted from the front surface of the light guide means;
It is characterized by having.

The backlight unit of the present invention can be used, for example, in various display devices and lighting devices described later.

The display device according to the invention of claim 12 is the display device according to claim 1.
The backlight unit according to item 1; and a display body illuminated from the back surface by the backlight unit.

The display device of the present invention can be used as a display device such as a liquid crystal display device and various guide display devices. For example, liquid crystal backlights and measuring instruments.

The illumination device of the invention of claim 13 is the same as that of claim 1.
It is characterized in that it is configured to illuminate with light emission from the backlight unit described in 1.

INDUSTRIAL APPLICABILITY The present invention can be applied to a lighting device for general lighting such as a guide light, a display light or a lighting stand.

[0054]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an enlarged sectional view showing a first embodiment of the lamp unit of the present invention. FIG. 2 is a front view of the same.

In each drawing, reference numeral 1 denotes a cold cathode fluorescent lamp, which has a well-known structure.

Reference numeral 2 is a gutter-shaped unit support, which is formed by forming a thin aluminum plate into a gutter shape, and has a length for accommodating substantially the entire length of the fluorescent lamp inside. Semicircle part 2
It has a shape composed of a and a pair of edge portions 2b, 2b extending from both ends thereof in parallel with each other. Further, the inner surface of the unit support body 2 is polished to be highly reflective. If necessary, a silver vapor deposition film can be formed on the inner surface.

A lamp support 3 is in close contact with the fluorescent lamp 1 and the unit support 2 along substantially the entire length thereof. The fluorescent lamp 1 has a semicircular portion 2a due to the lamp support
It is held in a concentric relationship with. The lamp support 3 is filled with liquid transparent silicone so as to cover about ⅔ of the entire circumference of the fluorescent lamp 1, and cured to serve also as a fixing means between the fluorescent lamp 1 and the unit support 2. ing.

Thus, in the present embodiment, the fluorescent lamp 1 is supported by the lamp support 3 within the unit support 2 over the entire length thereof, so that the mechanical strength is increased and the fluorescent lamp 1 is resistant to stress and impact. Become stronger. Also,
Since about 2/3 of the entire circumference of the fluorescent lamp 1 is covered by the lamp support 3, fluctuations in the light output due to changes in the vapor pressure of the fluorescent lamp 1 due to rapid changes in the outside temperature and the effects of wind are avoided. Can be prevented. Further, the lamp support 3
Is transparent, it does not adversely affect the light reflecting action of the unit support 2. Furthermore, the unit can be manufactured by one-time synthetic resin potting.

FIG. 3 is an enlarged sectional view showing a second embodiment of the present invention.

FIG. 4 is a front view of the same.

In each figure, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals, and the parts different from the first embodiment will be mainly described here.

The unit support 2 has the edge portions 2b and 2b.
b is longer than in the first embodiment, and the fluorescent lamp 1 has a semicircular portion 2
It is displaced somewhat from the center of b. As a result, the light condensing action at the semicircular portion 2a is strengthened.

The lamp support 3 is formed in advance and covers approximately half of the entire circumference of the fluorescent lamp 1. Therefore, the front half of the fluorescent lamp 1 is exposed. The lamp support 3 is adhered to the inner surface of the unit support 2. The fluorescent lamp 1 is also adhered to the lamp support 3.

When the edge portion 2b of the unit support 2 is separated from the diameter of the fluorescent lamp 1 by a small distance, in other words, when the opening diameter of the unit support 2 is formed small, the semicircular portion 2a. Since the ratio of the reflected light from the fluorescent lamp 1 to the front is relatively reduced, the edge portion 2
The reflection effect of b becomes important. However, the light emitted from the front half of the fluorescent lamp 1 is reflected by the edge portion 2b and guided to the front, so that the effective light output can be sufficiently maintained. The unit support 2 is made of a polyester synthetic resin film as a base material and a silver vapor deposition film deposited on the inner surface thereof.

A ribbon-shaped heater 4 is provided on the back surface of the fluorescent lamp 1. The heater 4 is temporarily fixed to the fluorescent lamp 1 with an adhesive or the like in advance and then fixed at both ends of the fluorescent lamp 1 by fixing means 5 such as a silicone adhesive so as to be closely attached to the concave portion of the lamp support 3. Reference numeral 6 is a thermistor arranged near one end of the tube. The thermistor 6 is used to detect the temperature of the fluorescent lamp 1 and control the heater 4.

FIG. 5 is an enlarged sectional view showing a third embodiment of the fluorescent lamp unit of the present invention.

In the figure, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals, and the parts different from the first embodiment will be mainly described here.

The unit support 2 has an angular shape at the portion facing the rear half of the fluorescent lamp 1. Also,
A light reflection film 7 is formed on the inner surface of both edge portions 2b, 2b facing the front half of the fluorescent lamp 1, but no light reflection film is formed on the portion facing the rear half.

The lamp support 3 is made of a light-reflecting synthetic resin such as white silicone and is formed by potting so as to embed the rear half of the fluorescent lamp 1.

Thus, in this embodiment, the light emitted from the rear half of the fluorescent lamp 1 is reflected by the lamp support 3 and returns to the fluorescent lamp 1 to pass through the fluorescent lamp 1 and be led out forward. Further, the light emitted from the front half is reflected by the edge portion 2b or is directly led to the front side, so that the effective light output of the fluorescent lamp unit can be increased.

FIG. 6 is a sectional view showing the fourth embodiment of the present invention.

FIG. 7 is an exploded perspective view of the same.

This embodiment is similar in structure to the first embodiment shown in FIGS. 1 and 2, and therefore, the same parts are designated by the same reference numerals and the description thereof will be omitted.

[0075] Fluorescent lamp 1, the inner tube diameter 4.1 mm, phosphate phosphor of the rare earth on the inner surface of the glass bulb 1a tube length ^{_{280mm (LaPO 4: Ce 3 +}} , Tb 3 +) form a phosphor layer 1b made of Then, cold cathodes 1c made of nickel sleeves are sealed at both ends of the glass bulb 1a, and several torr of argon gas and mercury are sealed in the glass bulb 1a.

The unit support 2 is formed by bending an aluminum plate and depositing silver on the inner surface of the aluminum plate to form a reflecting surface 2c.

The lamp support 3 has a recess having a depth for accommodating about half of the fluorescent lamp 1, and is formed by molding a transparent silicone resin in advance.

A heater 4 is closely attached to the rear surface of the fluorescent lamp 1 which is located inside the unit support 2.

The heater 4 is formed by forming a thin stainless plate in a zigzag shape, laminating synthetic resin sheets on both sides, and disposing terminals 4a at both ends.

Then, the lamp support 3 is fitted in the unit support 2, the heater 4 is overlapped, and the fluorescent lamp 1 is fitted in the recess of the lamp support 3 to put the three members into a compressed state. By maintaining and casting the oxime-based silicone resin 5 on both ends of the fluorescent lamp 1, the three members are fixed.

Then, the heater 4 is fixed by the oxime type silicone resin 5 to the fixed fluorescent lamp 1 and the lamp support 3.
It is fixed in close contact with and. By using a resin having a relatively good thermal conductivity such as an oxime-based silicone resin as the fixing means 5, it becomes easy to form the coldest part at both ends of the fluorescent lamp 1, and the mercury is provided in the main light emitting part in the middle part. It is possible to reduce the occurrence of accumulation.

FIG. 8 is a conceptual diagram showing an embodiment of the reading apparatus of the present invention.

In the figure, 8 is a fluorescent lamp unit,
The above-described embodiments are applicable. Reference numeral 9 denotes a light receiving means, which is illuminated by the fluorescent lamp unit 8 at a close range and receives the light reflected by the document surface to generate a read signal. The optical axis of the fluorescent lamp unit 8 is tilted so that the light reflected on the document surface is directed to the light receiving means 9. 10 is a signal processing device,
The read signal is processed. Reference numeral 11 denotes a document placement surface, which is made of transparent glass, for example. Reference numeral 12 is a box for accommodating the above components. Other components except the fluorescent lamp unit 8 constitute the reading device main body 13.

Thus, in the present embodiment, the fluorescent lamp unit 8 is in close contact with the entire main part of the fluorescent lamp by the lamp support as described above, so that the fluorescent lamp is assembled or used. The reading device is less likely to be broken by an inner shock, and therefore has improved mechanical strength. Moreover, since the effective light output of the fluorescent lamp unit can be increased, the reader can be easily designed.

FIG. 9 is a conceptual diagram showing an embodiment of the OA equipment of the present invention.

In the figure, reference numeral 14 is a reading device. Fifteen
Is a toner image forming means, which forms an electrostatic latent image based on the output signal of the reading device, and adheres toner to form a toner image. A transfer device 16 transfers a toner image onto a fixing medium such as paper. A fixing device 17 heats and fixes the toner image. Reference numeral 18 denotes an OA device main body that includes the above-described constituent elements other than the reading device 14 and other auxiliary constituent elements. The OA device of this embodiment is a copying machine.

FIG. 10 is a sectional view showing an embodiment of the backlight unit and the display device of the present invention.

In the figure, 19 is a backlight unit, and 20 is a display device.

The backlight unit 19 includes a light guide 19a made of acrylic resin, a fluorescent lamp unit 8 arranged on the side of the light guide 19a, a reflection plate 19b arranged on the back side of the light guide 19a, and a light guide. The body 19a is composed of a light control means such as a diffusing plate 19d, a light collecting plate 19e, and a case 19f for accommodating the above-mentioned components.

A pair of edge portions 2 of the fluorescent lamp unit 8
b and 2b are attached with the side portion of the light guide 19a sandwiched therebetween.

The display device 20 is a backlight unit 19.
The display 21 is disposed on the light emitting surface of the display 21, for example, a liquid crystal display.

Even in the present embodiment, since the fluorescent lamp is supported by the lamp support, it is mechanically strong and the assembling property of the backlight unit and the display device is improved, and the effective light output can be increased. .

FIG. 11 is a front view of the lighting device of the present invention.

In the figure, reference numeral 22 denotes a main body of the illuminating device, which supports or incorporates the backlight unit 19 including the light guide 19a. A frame portion 23 covers the periphery of the three surfaces of the light guide 19a. A mark for the purpose of guiding or displaying can be attached to the front surface of the light guide 19a.

The illumination device of this embodiment is configured to be illuminated by the light from the backlight.

[0096]

EXAMPLES Next, examples of the fluorescent lamp unit of the present invention will be shown.

Fluorescent lamp: tube diameter 4.1 mm, tube length 256 mm, cold cathode type discharge medium; mercury, Ar 40% and Ne 60% 60 torr phosphor; LaPO4: Ce, Te (manufactured by Nichia Corporation), light emission Color 544 nm Heater: Ribbon-shaped stainless steel heater (rated 14 V, 6.8 W) Fluorescent lamp unit: Structure shown in FIGS. 2 and 3 Support member: Silver reflection film (manufactured by Mitsui Toatsu Chemicals, Inc.), reflectance 94 %, Opening diameter 8 mm Synthetic resin support; Transparent silicone (manufactured by Toshiba Silicone Co., Ltd.), Transparency 94% Lighting device: Transistor inverter, Oscillation frequency 20 KHz Test method: Room temperature (25 °), 4 hours in windless environment After leaving, the illuminance at each position in front of the fluorescent lamp unit is measured after the lighting is stabilized at the rated lamp current of 7 mA. For comparison, measure the fluorescent lamp alone under the same conditions.

Measuring instrument used: illuminance meter; MINOLTA T-1M oscilloscope; YEW DL-1540 constant humidity and constant temperature chamber; TABAI PL-2GP measurement result: shown in FIG. In the figure, the horizontal axis represents the distance (mm), and the vertical axis represents the illuminance (10 3 lx). In the figure, A is the illuminance characteristic curve of the fluorescent lamp unit, and B is the illuminance characteristic curve of the fluorescent lamp alone. That is, the fluorescent lamp unit of the present invention showed an illuminance of 21,900 lx at a distance of 10 mm. This value was more than twice that of the fluorescent lamp alone.

[0099]

According to each of the first to eighth aspects of the invention, it is possible to provide a fluorescent lamp unit in which the fluorescent lamp is strongly supported against impact.

According to the second aspect of the invention, it is possible to provide a fluorescent lamp unit in which the heater is easily brought into close contact with the fluorescent lamp and the heat-up is improved.

According to the invention of claim 3, since the inner surface of the unit support is light-reflecting, the unit support is used as a reflector to provide a fluorescent lamp unit having an increased effective light output. You can In this case, if the lamp support is translucent, there is no problem because it does not hinder the progress of light.

According to the invention of claim 4, as the opening diameter of the unit support becomes smaller, the light reflection at the both edge portions relatively contributes. Therefore, by making at least the edge portion light reflective. According to the invention of claim 5, it is possible to provide a fluorescent lamp unit having an increased effective light output. In addition, the lamp support is formed by casting a synthetic resin between the unit support and the fluorescent lamp. Therefore, it is possible to provide the fluorescent lamp unit in which the three members are fixed.

According to the sixth aspect of the present invention, since the lamp supporting body in which the lamp supporting body is formed in advance is used, it is possible to provide the fluorescent lamp unit which can be easily assembled.

According to the invention of claim 7, since the lamp support is made of a transparent synthetic resin, the light reflecting action is hindered when a part or all of the inner surface of the unit support is used as a reflector. It is possible to provide a fluorescent lamp unit that does not.

According to the invention of claim 8, since the fixing means is constructed by casting synthetic resin on both ends of the fluorescent lamp, it is possible to provide a fluorescent lamp unit which can be easily fixed.

According to the ninth aspect of the invention, it is possible to provide a reading device that achieves the effects of the first to eighth aspects of the invention.

According to the invention of claim 10, it is possible to provide an OA device having the effects of the invention of claims 1 to 8.

According to the eleventh aspect of the present invention, it is possible to provide a backlight having the effects of the first to eighth aspects of the invention.

According to the twelfth aspect of the present invention, it is possible to provide a display device having the effects of the first to eighth aspects of the invention.

According to the thirteenth aspect of the present invention, it is possible to provide an illuminating device having the effects of the first to eighth aspects of the invention.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view showing a first embodiment of a fluorescent lamp unit of the present invention.

FIG. 2 is also a front view

FIG. 3 is an enlarged sectional view showing a second embodiment of the fluorescent lamp unit of the present invention.

[Figure 4] Similarly, a front view

FIG. 5 is an enlarged sectional view showing a third embodiment of the fluorescent lamp unit of the present invention.

FIG. 6 is an enlarged sectional view showing a fourth embodiment of the fluorescent lamp unit of the present invention.

FIG. 7 is an exploded perspective view of the same.

FIG. 8 is a conceptual diagram showing an embodiment of a reading device of the present invention.

FIG. 9 is a conceptual diagram showing an embodiment of an OA device of the present invention.

FIG. 10 is a sectional view showing an embodiment of a backlight unit and a display device of the present invention.

FIG. 11 is a front view showing an embodiment of a lighting device of the present invention.

FIG. 12 is a graph showing the test results of the examples.

FIG. 13 is an enlarged cross-sectional view showing an example of a fluorescent lamp unit used in a conventional backlight device.

FIG. 14 is a front view of the same.

[Explanation of symbols]

 1 ... Fluorescent lamp 2 ... Unit support 3 ... Lamp support

Claims (13)

[Claims] 1. A fluorescent lamp; a trough-shaped unit support member for accommodating at least a longitudinal main portion of the fluorescent lamp; a fluorescent lamp and a unit support along at least a longitudinal main portion of the fluorescent lamp. A lamp support body made of a translucent or light-reflecting synthetic resin for supporting the fluorescent lamp interposed therebetween; a fixing means for fixing the fluorescent lamp to the unit support body; Fluorescent lamp unit. 2. A fluorescent lamp; a trough-shaped unit support member for accommodating at least a longitudinal main portion of the fluorescent lamp; a fluorescent lamp and a unit support member along at least a longitudinal main portion of the fluorescent lamp. A lamp support made of a translucent or light-reflecting synthetic resin interposed between to support the fluorescent lamp; a fluorescent lamp and a heater sandwiched between the lamp supports; the fluorescent lamp as a unit support A fluorescent lamp unit comprising: fixing means for fixing. 3. The fluorescent lamp unit according to claim 1, wherein at least the inner surface of the unit support is formed to be light reflective. 4. The fluorescent lamp unit according to claim 1, wherein at least the inner surfaces of both edge portions in the longitudinal direction of the unit support are formed to be light reflective. 5. The fluorescent lamp according to claim 1, wherein the lamp support is formed by casting a synthetic resin between the unit support and the fluorescent lamp. unit. 6. The fluorescent lamp unit according to claim 1, wherein the lamp support is preformed and fitted between the unit support and the fluorescent lamp. 7. The fluorescent lamp unit according to claim 1, wherein the lamp support is made of a transparent synthetic resin. 8. The fluorescent lamp unit according to claim 1, wherein the fixing means is formed by casting synthetic resin on both ends of the fluorescent lamp. 9. A reading device comprising: a reading device main body; and a fluorescent lamp unit according to claim 1, which is housed in the reading device main body and used as a reading light source. apparatus. 10. An OA device, comprising: an OA device main body; and a reading device according to claim 9 disposed at a required position of the OA device main body. 11. A fluorescent lamp unit according to any one of claims 1 to 8; a light guide means arranged so that light emitted from the fluorescent lamp unit is introduced from a side and led out from a front surface; And a light control means for controlling light emitted from the front surface of the means. 12. A display device comprising: the backlight unit according to claim 11; and a display body illuminated from the back surface by the backlight unit. 13. An illumination device configured to illuminate with the light emitted from the backlight unit according to claim 11.