JP2002134241A - Retainer and illumination device for aperture type fluorescent lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retainer and an illumination device of an aperture type fluorescent lamp wherein an appropriateness of aperture position and aperture angle of elevation can be judged easily and simultaneously. SOLUTION: This retainer is an insulating retainer 1 to have a fitting support part 1a to position/fit and support an end part of the aperture type fluorescent lamp 2, and notches 1b, 1c are installed in which at least one side of notched parts at both end parts of aperture width 2a of the aperture type fluorescent lamp 2 are gradually enlarged in the outward direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holder for an aperture type fluorescent lamp and a lighting device using the aperture type fluorescent lamp as a light source.

[0002]

2. Description of the Related Art For example, an aperture type fluorescent lamp is often used as an exposure light source of a copying machine, a document reading light source of a facsimile (transmission device), or a backlight light source of a liquid crystal display device. That is, a light projection region (aperture) having a constant width is left in the tube axis direction on the inner wall surface of the glass bulb, for example, a titanium oxide fine particle-based visible reflection layer and a phosphor film are sequentially laminated, and xenon is a main component. An aperture-type fluorescent lamp having a configuration in which an arc tube filled with a rare gas as described above and a pair of discharge electrodes sealed in the arc tube or a pair of external electrodes arranged facing the outer peripheral surface of the arc tube has been put to practical use.

[0003] Here, in the case of the aperture type fluorescent lamp, when a required voltage is applied between a pair of discharge electrodes, a discharge starts between the discharge electrodes, and ultraviolet rays are radiated in the arc tube, similarly to the case of a normal fluorescent lamp. I do. The emitted ultraviolet light is converted into visible light by the phosphor film on the inner wall surface of the arc tube, and functions as a fluorescent lamp light source. At this time, in the aperture type fluorescent lamp, on the inner wall surface of the glass bulb,
Visible light is projected from a light projection area (aperture) provided with a constant width in the axial direction. That is, since the visible light converted by the phosphor film passes through the glass tube wall exhibiting light transmittance without passing through the phosphor film or the like, light emission can be used more efficiently.

In the above-mentioned aperture type fluorescent lamp, the aperture formed at a constant width in the glass tube axis direction has a cross section at an angle corresponding to the aperture width of the inner peripheral surface of the glass tube with respect to the glass tube axis. It is set and varies depending on the configuration / standard of the fluorescent lamp, the use as a light source, and the like, but is generally about 60 to 90 °. An aperture type fluorescent lamp of this type is used in a form in which both ends are supported and fixed by a synthetic resin or rubber holder having a fitting support portion for fitting and supporting the ends. Here, power supply to the aperture type fluorescent lamp is performed by connection to a power supply terminal provided on the holder corresponding to the lead terminal of the discharge electrode or a power supply terminal separately provided outside the holder.

[0005]

In using an aperture-type fluorescent lamp which is more effective, basically, it is important that the positioning accuracy of the light projection area (aperture) at the time of mounting on the holder is important. Become. In other words, the effective use of the projection light depends on whether or not the holding fixture fits and supports the aperture-type fluorescent lamp in a state in which the aperture is appropriately arranged as opposed to the light irradiation area as designed. In particular, in the configuration of a planar light source in which a plurality of aperture-type fluorescent lamps are arranged in parallel, for example, a configuration of a planar backlight unit, this poses a problem that the quality of a liquid crystal display image is easily deteriorated.

However, the conventional means for positioning and fitting and supporting the aperture-type fluorescent lamp using the holder is complicated in operation and has poor positioning accuracy, which poses a problem in practical use. In other words, although a mark for positioning is set on the holder, this mark is a single point (small or fixed width slit), so that temporary positioning is possible, but visual judgment is complicated. Yes, and there is still a problem in terms of accuracy.

In this regard, when the holder is mounted with the aperture-type fluorescent lamp, the positioning mark set in advance on the holder and the aperture of the aperture-type fluorescent lamp are substantially aligned. become. In other words, the pass / fail judgment is simply made as to whether the aperture of the aperture-type fluorescent lamp is located within the allowable range, or whether the aperture elevation angle is appropriate. Therefore, it is practically difficult to dispose the aperture facing the light-irradiated area as designed, and the effective utilization of the projected light is likely to be impaired.

As a solution to the above problem, the operation of positioning and fitting the aperture type fluorescent lamp to the holder is carefully performed. However, there still remains a problem of difficulty in properly determining whether the aperture for the light irradiation area is set at a regular position by simple visual observation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended for an aperture-type fluorescent lamp capable of easily and simultaneously determining whether the aperture of the aperture-type fluorescent lamp is at a predetermined position and the aperture elevation angle is appropriate. Retainer,
It is another object of the present invention to provide a lighting device capable of effectively utilizing projection light.

[0010]

According to a first aspect of the present invention, there is provided a holder having a fitting support for positioning and fitting and supporting an end of an aperture type fluorescent lamp.
A holder for an aperture-type fluorescent lamp, characterized in that a notch that widens outward is provided so that at least one aperture width end of the aperture-type fluorescent lamp is exposed.

According to a second aspect of the present invention, in the holder for an aperture type fluorescent lamp according to the first aspect, the notch of the fitting support portion corresponds to a region where both ends of the aperture width of the aperture type fluorescent lamp are exposed. It is characterized by being provided.

According to a third aspect of the present invention, in the holder for an aperture type fluorescent lamp according to the first or second aspect, the notch starts from a tube axis of the aperture type fluorescent lamp, and is formed with respect to the aperture angle. The aperture is set by the tolerance of the aperture.

According to a fourth aspect of the present invention, an aperture type fluorescent lamp and an end of the aperture type fluorescent lamp are positioned and positioned.
A holder having a fitting support portion for fitting and supporting, and a power supply circuit for supplying power to the aperture-type fluorescent lamp fitted and supported by the insulating holder, wherein the holding device has an aperture type on the fitting support portion. A lighting device, characterized in that a notch that is widened outward is provided so that at least one aperture width end of the fluorescent lamp is exposed.

According to a fifth aspect of the present invention, in the illuminating device according to the fourth aspect, the notch provided in the holder starts from the tube axis of the aperture type fluorescent lamp and has a tolerance of the aperture with respect to the aperture angle. It is characterized by being set.

According to the first to fifth aspects of the present invention, the holder having the fitting support for positioning and fitting the end of the aperture type fluorescent lamp is made of, for example, polycarbonate resin, polycarbonate blend resin, silicone rubber, or the like. It is a molded body. Here, the fitting support portion of the holder has an outer diameter and an outer diameter of the aperture type fluorescent lamp to be mounted so as to fit and support an end of the aperture type fluorescent lamp.
It is set substantially corresponding to the shape. The aperture type fluorescent lamp is generally used as a light source of this type, and has a configuration in which a pair of discharge electrodes are arranged opposite to the outer peripheral surface of the arc tube (external electrode type), and a pair of discharge electrodes is arranged inside the arc tube. Such as a structure in which one discharge electrode is sealed in the outer peripheral surface of the arc tube and the other discharge electrode is sealed in the arc tube.
The size and shape are not limited.

According to the first to fifth aspects of the present invention, the cutout (tapered slit) provided in the fitting support portion of the holder has a cutout which is widened outward, and the aperture width of the aperture type fluorescent lamp to be fitted and supported. , And at least one location corresponding to the elevation angle. Here, since the aperture width is an angle based on the tube axis of the aperture-type fluorescent lamp, by exposing the end of the aperture width, it is possible to appropriately determine the positioning together with the elevation angle by visual inspection.
A tapered notch is provided. In other words, a notch is provided that widens outward so that the range can be visually checked with a tolerance of the aperture with respect to the aperture angle (end of the aperture width) while assuming a required elevation angle. Here, the tolerance of the aperture is about ± 10 ° with respect to the aperture angle.

According to the first to fifth aspects of the present invention, the holder is adapted to fit and support the aperture type fluorescent lamp, and if necessary, to have a power supply terminal for the fitted and supported aperture type fluorescent lamp. Can also. That is,
When the end of the aperture type fluorescent lamp is fitted and supported on the fitting support portion of the holder, a power supply terminal electrically connected to a lead terminal of the aperture type fluorescent lamp may be provided.

It is to be noted that the above-mentioned holder may be configured integrally with a pair corresponding to an aperture type fluorescent lamp, and further, as a configuration integrally including a plurality of pairs, a plurality of aperture type fluorescent lamps may be provided. It is possible to adopt a mode in which the lamps can be arranged in parallel.

In the fourth and fifth aspects of the present invention, the power supply circuit for supplying power to the aperture type fluorescent lamp is a general fluorescent lamp lighting circuit, and is adapted to the number of the aperture type fluorescent lamps, the purpose of use or the state of use. A lighting circuit can be selected.

According to the first to third aspects of the present invention, it is easy to determine whether or not the aperture of the aperture-type fluorescent lamp is exposed and positioned in the notch which is enlarged (outward) outside the fitting support portion of the holder. Can be determined. That is, since the notch is tapered and is easy to see from the viewer side, it is possible to accurately detect whether or not the aperture is exposed in the tolerance range of the aperture.

In particular, when a pair of the notches are provided, the notches are set corresponding to the elevation angle of the aperture designed in advance, so that the aperture can be positioned with high accuracy and the elevation angle can be set at the same time. . In addition, even if there is one notch, it is a notch that expands outward (outward), so that it is easy to make light incident, so that accurate visual judgment can be made. For example, if there is an error in the aperture angle or the installation elevation angle, it is inevitably removed from the notch, and the determination is easily performed accurately, so that the defect determination becomes easy.

According to the fourth and fifth aspects of the present invention, as the aperture type fluorescent lamp is mounted with the aperture positioned at a high precision and set at an elevation angle, the light emission can be efficiently used in accordance with the purpose. Become.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS.

FIG. 1 is an enlarged perspective view showing a schematic configuration of a holder according to the embodiment, and FIG. 2 is a sectional view showing an enlarged schematic configuration of the holder according to the embodiment. In this example,
This holder is designed to hold an external electrode aperture type fluorescent lamp having an outer diameter of 8 mm and an aperture angle (each end of the aperture width) of 70 ± 10 ° at an elevation angle of 35 °.
Here, the tolerance for the aperture angle is set to 10 °.

1 and 2, reference numeral 1 denotes an insulating holder having a fitting support portion 1a for positioning and fitting the end of the aperture type fluorescent lamp 2. Here, the fitting support portion 1a is adapted to fit and support the end of the aperture type fluorescent lamp 2 so as to be fitted.
The through-hole type is set substantially corresponding to the outer diameter and shape of.

Reference numerals 1b and 1c denote cutouts provided on an end face of the fitting support portion 1a of the holder 1 and having a widened cutout. The pair of cutouts 1b and 1c are fitted and supported. Aperture width 2a of aperture type fluorescent lamp 2,
And it is installed corresponding to the elevation angle. That is, the aperture width 2a forming the uncoated portion of the phosphor film 2b is an angle based on the tube axis of the non-aperture type fluorescent lamp 2 of the phosphor film 2b, and is qualified by exposing both ends of the aperture width 2a. A pair of notches 1b and 1c are provided at positions of about ± 10 ° with respect to the aperture angle (each end of the aperture width) so that the positioning with the elevation angle can be visually determined.
Is provided.

The holder 1 is a molded product obtained by using a required mold, for example, made of a polycarbonate resin, a polycarbonate-based blended resin, silicone rubber, or the like. In other words, the accuracy of dimensions and shape is high,
A molded product that can be mass-produced with good reproducibility.

Next, an example of fitting and supporting the aperture type fluorescent lamp 2 by the holder 1 will be described. A pair of holders 1 are set and arranged in advance, and the end portions of the aperture type fluorescent lamp 2 are positioned and fitted to and supported by the fitting support portions 1a of the holders 1. Here, whether or not the edge of the aperture width 2a of the fitted and supported aperture type fluorescent lamp 2 is exposed to a pair of tapered notches 1b and 1c provided in the fitting support portion 1a of the holder 1. Is visually determined.

At this time, since the notches 1b and 1c are set in correspondence with the aperture width 2a and the elevation angle of the aperture type fluorescent lamp 2 fitted and supported in consideration of the tolerance, the portions are also formed. Aperture width 2 for easy viewing
a If both end portions are exposed, it is visually determined that both the elevation angle and the elevation angle are set as designed (at a regular position). Then, when it is determined that the fitting is supported at an appropriate position and elevation angle, it is fixed with a fixing member such as a curable silicone or a hot melt.

FIG. 3 is a perspective view showing a schematic configuration when an illumination device is formed by fitting and supporting both ends of an aperture type fluorescent lamp 2 at appropriate positions and elevation angles with a pair of holders 1.
For example, when the illumination device is used as an exposure light source of a copying machine, the aperture width 2a is set at a regular position and at a regular elevation angle, so that light emission is efficiently used and the required exposure is ensured. It can be carried out.

On the other hand, when the aperture width 2a of the aperture type fluorescent lamp 2 fitted and supported is out of the standard,
The end of the aperture 2a has at least one notch 1.
Since it is not exposed to (exceeds) b and 1c, the defect can be determined at a glance. Also, the aperture width (aperture angle) 2
Even if “a” is normal, if the aperture type fluorescent lamp 2 is twisted in the tube axis direction, a failure determination is similarly made.

In the above description, the aperture angle is 70 ± 10 °
Although the description has been given of the case of the holder for fitting and supporting the outer electrode aperture type fluorescent lamp at an elevation angle of 35 °, the present invention is not limited to this, and various modifications may be made without departing from the spirit of the invention. Can be taken.

For example, if the aperture angle is 90 ±
A 10 ° external electrode aperture type fluorescent lamp is set at an elevation angle of 45 °.
Notch 1b corresponding to this,
The same operation and effect can be obtained with the configuration provided with 1c. The same applies to the case where the aperture type fluorescent lamp 2 is an internal electrode type. Further, a plurality of pairs of the holders are arranged to face each other, and the aperture type fluorescent lamps are mounted in parallel to form a planar illumination light source. Is also good.

Further, even when the holder has one tapered notch for positioning, the aperture angle range or the edge of the aperture angle can be easily formed.
And it can be surely observed.

[0035]

According to the first to third aspects of the present invention, whether or not the aperture type fluorescent lamp is properly fitted to and supported by the holder can be visually and easily and accurately determined. That is, the aperture angle of the aperture type fluorescent lamp to be fitted and supported, and the tapered notch provided in the holder corresponding to the elevation angle of the aperture are used, so that the aperture can be easily viewed, and the positioning of the aperture with high accuracy and the elevation angle can be adjusted. Settings can be made at the same time and without complicated operations.

According to the fourth and fifth aspects of the present invention, the aperture can be positioned with high accuracy, and the aperture-type fluorescent lamp can be set at the elevation angle, so that the light emission can be used efficiently according to the purpose. It becomes possible to provide a lighting device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of a holder according to an embodiment.

FIG. 2 is a cross-sectional view illustrating a schematic configuration of a holder according to the embodiment.

FIG. 3 is a perspective view showing a schematic configuration of a lighting device according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Holder 1a ... Fitting support part 1b, 1c ... Notch 2 ... Aperture type fluorescent lamp 2a ... Aperture width 2b ... Phosphor film

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ryuji Tsuchiya 1-5-2, Asahi-cho, Imabari-shi, Ehime Prefecture Harrison Toshiba Lighting Co., Ltd. No.1 Harrison Toshiba Lighting Co., Ltd. F term (reference) 3K013 AA01 BA02 EA13 5E024 BB06

Claims (5)

[Claims] 1. A holder having a fitting support portion for positioning and fitting and supporting an end of an aperture type fluorescent lamp, wherein the fitting support portion has at least one aperture width end portion of the aperture type fluorescent lamp. A holder for an aperture-type fluorescent lamp, characterized in that a notch that is widened outward is provided so that the light is exposed. 2. The aperture type fluorescent lamp according to claim 1, wherein the notch of the fitting support portion is provided corresponding to a region exposing both ends of the aperture width of the aperture type fluorescent lamp. Holder. 3. The aperture-type fluorescent lamp according to claim 1, wherein the notch is set at a starting point of the tube axis of the aperture-type fluorescent lamp and at a tolerance of the aperture with respect to the aperture angle. Holder for lamp. 4. An aperture type fluorescent lamp, a holder having a fitting support portion for positioning and fitting and supporting an end of the aperture type fluorescent lamp, and an aperture type fluorescent lamp fitted and supported by the insulating holder. And a power supply circuit for supplying power to the lamp, wherein the holder is provided with a notch that expands outward at the fitting support portion so that at least one aperture width end of the aperture type fluorescent lamp is exposed. Lighting equipment. 5. The aperture according to claim 4, wherein the notch provided in the holder is set at a starting point of the tube axis of the aperture type fluorescent lamp and at a tolerance of the aperture with respect to the aperture angle. Lighting equipment.