JP2014160641A - Fluorescent tube case and fluorescent tube device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluorescent tube case that enables an Hf type fluorescent tube to be fitted to existing facilities and can suppress a decrease in durability while securing the same length of a light emission part as before.SOLUTION: A fluorescent tube case 1 is configured to house a fluorescent tube 2 and allow the fluorescent tube to light up in itself, and includes: a cylindrical exterior tube 4 which is translucent; an interior tube 5 which is housed therein in an upper region with a region corresponding to the fluorescent tube 2 being a lower region; a lighting circuit part 8 which is housed therein detachably; connectors 14, 15 which extend from the lighting circuit part 8 and are attachable to and detachable from terminals of the fluorescent tube 2; and cap parts 6 with terminals which can be fitted to fluorescent lamp sockets. The interior tube 5 has a partition part 5a which constitutes a cylindrical lower side face and curves in a downward concave shape to have both edges in contact with an inner surface of the exterior tube 4, and a circuit protection part 5b which is formed in a dome shape surrounding the lighting circuit part 8 and partially abuts on the inner surface of the exterior tube 4.

Description

  The present invention relates to a fluorescent tube case and a fluorescent tube device for attaching a high-frequency lighting fluorescent tube to a starter-type fluorescent lamp facility.

Currently, there are glow starter type lighting methods, rapid starter type lighting methods, and inverter type (high frequency lighting type) lighting methods for fluorescent lamps.
Conventionally, a glow starter type lighting system composed of a glow lamp and a ballast has been adopted in many cases, but at present, a rapid starter type lighting system capable of shortening the lighting time is often used.

On the other hand, the inverter-type lighting system has a demand for switching from existing glow starter type or rapid starter type fluorescent lamps because it has less flickering and can save power by improving lamp efficiency.
However, since it is necessary to newly install a lighting circuit for every fluorescent tube in order to do so, cost is high.

  Therefore, a detachable high-frequency lighting system that can be switched to an inverter-type (high-frequency lighting type) lighting system without replacing existing starter-type equipment has been considered (Patent Document 1).

FIG. 9 shows an inverter type (high frequency lighting type) fluorescent tube apparatus described in Patent Document 1. In FIG.
This fluorescent tube device includes a light-transmitting outer tube 104, a slim type (only for high-frequency lighting) fluorescent tube 102 housed in the outer tube 104 and held at both ends by holder caps 107, and its fluorescent light In order to provide compatibility, the inverter-type lighting circuit 108 for lighting the tube 102 and a terminal cover 106 having a pin-shaped terminal 106a similar to a cap pin of a normal straight tube fluorescent lamp are provided. It has almost the same shape and dimensions as a normal straight tube fluorescent tube.

The inverter type lighting circuit 108 is provided inside the terminal cover 106, and is further housed and protected in a circuit housing case 109 interposed between the outer tube 104 and the terminal cover 106.
Further, the terminal 106 a of the terminal cover 106 can be fitted to an existing fluorescent lamp socket and can receive electric power, and the electric power is supplied to the fluorescent tube 102 via the inverter type lighting circuit 108.

  In addition, in order to use the fluorescent tube apparatus as shown in FIG. 9 for existing equipment, it is necessary to separate some equipment such as existing ballasts. Easy work.

JP 2012-138249 A

  In the configuration of the fluorescent tube device of Patent Document 1 shown in FIG. 9, since the inverter type lighting circuit 108 and the fluorescent tube 102 are arranged on the same axis, it is intended to align the entire length with the existing fluorescent tube in order to maintain compatibility. Then, it is necessary to shorten the fluorescent tube 102 by an amount corresponding to the inverter type lighting circuit 108, and accordingly, an end portion corresponding to the inverter type lighting circuit 108 of the fluorescent tube device looks dark. If an attempt is made to shorten the inverter-type lighting circuit 108 in order to improve it, the inverter-type lighting circuit 108 becomes too dense, leading to a decrease in durability due to thermal degradation and causing a failure.

  The present invention has been made in view of the above, and an object of the present invention is to attach a high-frequency lighting type fluorescent tube to a starter-type fluorescent lamp facility, and the length of the light emitting portion is the same as that of an existing fluorescent tube. An object of the present invention is to provide a fluorescent tube case that can prevent a decrease in durability while ensuring the thickness.

In order to achieve the above object, the present invention provides, as described in claim 1,
It is a fluorescent tube case that houses a straight tube type high-frequency lighting dedicated fluorescent tube and lights it inside itself,
An outer tube formed of a material having a cylindrical shape and capable of accommodating the fluorescent tube;
A tubular inner tube that is housed in the upper region on the opposite side when the region corresponding to the fluorescent tube is located inside the outer tube;
A lighting circuit unit detachably accommodated in the interior pipe;
A connector extending from the lighting circuit portion and detachably connectable to a terminal of the fluorescent tube;
A pair of cap parts attached to both ends of the outer tube and having terminals that can be fitted to external fluorescent lamp sockets,
The inner pipe is
A partition wall portion that constitutes the lower side surface of the cylindrical shape and is curved downwardly concavely so as to cover the fluorescent tube in a shade shape, and both edges thereof abut against the inner surface of the outer tube,
A circuit protection part that is formed in a dome shape so as to surround the lighting circuit part, and at least a part of which is in contact with the inner surface of the outer tube;
A fluorescent tube case is provided.

  According to a second aspect of the present invention, a part of the circuit protection part of the inner tube abuts on the inner surface of the outer tube, and a shaft is provided between the remaining part of the circuit protection unit and the inner surface of the outer tube. The fluorescent tube case according to claim 1, wherein a gap communicating in the direction is formed.

  According to a third aspect of the present invention, there is provided the fluorescent tube case according to the first or second aspect, wherein the outer tube is made of plastic.

  According to a fourth aspect of the present invention, there is provided a fluorescent tube device comprising a fluorescent tube case according to any one of the first to third aspects and a straight tube type high-frequency lighting dedicated fluorescent tube mounted thereon. .

  Further, as described in claim 5, the fluorescent tube is provided with a light reflection film having a high light reflectance in a predetermined opening angle range on the inner surface on the upper side with respect to the tube center. A fluorescent tube device as described is provided.

  According to a sixth aspect of the present invention, the light reflecting film of the fluorescent tube is provided on the inner surface on the upper side with respect to the tube center in an opening angle range of about 80 degrees or less on the left and right. The fluorescent tube device described in 1. is provided.

  In the present invention, the region corresponding to the fluorescent tube is on the bottom and the opposite side is on the top. Needless to say, these are for convenience of explanation and do not specify an absolute direction. .

  Since the fluorescent tube case of the present invention can be turned on simply by connecting the lighting circuit portion and the fluorescent tube inside and attaching to the existing fluorescent lamp socket, an inverter type lighting circuit is used for the existing starter type equipment. A high-frequency lighting type fluorescent tube can be used.

  In addition, the fluorescent tube case of the present invention divides the interior of the outer tube into upper and lower regions and houses the lighting circuit portion on the upper side and the fluorescent tube on the lower side, so that a sufficient installation space for both can be secured. it can. Therefore, the length of the fluorescent tube can be set to be almost the same as the fluorescent tube of the existing equipment so as not to cause a shortage of light quantity at the end portion, and the lighting circuit portion is designed to be relaxed so as to generate heat of the circuit. Can be suppressed.

  In addition, the fluorescent tube case of the present invention has an interior tube inside the exterior tube, and the interior tube is firmly attached so that the dome-shaped circuit protection portion and both edges of the lower side face the inner surface of the exterior tube. Since it is fixed, it has a double tube structure of an outer tube and an inner tube as a whole. Therefore, it is difficult to bend even for long-term use.

  Furthermore, in the fluorescent tube case of the present invention, the fluorescent tube storage region and the lighting circuit unit storage region are divided into upper and lower parts, and the fluorescent tube and the lighting circuit unit are separately detachably disposed in the outer tube. Therefore, it is possible to easily check the deterioration state of the circuit that has passed the service life, replace it, and replace the fluorescent tube that has reached the end of its life.

  In addition, since the fluorescent tube case described in claim 2 is provided with a gap between the circuit protection portion and the inner surface of the outer tube, the frictional resistance when the inner tube is loaded into the outer tube is reduced. Therefore, the work of loading the inner tube into the outer tube at the time of manufacture can be efficiently performed with a light force. In addition, since the heat insulating space is formed by the gap between the circuit protection portion and the inner surface of the outer tube, the influence of heat generated from the lighting circuit portion does not easily reach the outer tube, and deterioration of the outer tube is suppressed.

  Further, when the outer tube is formed of plastic as described in claim 3, even if the fluorescent tube case is dropped due to a disaster or the like, there is no risk that the glass tube is broken and the fragments are scattered. Moreover, since the ultraviolet rays emitted from the fluorescent tube are also absorbed and reduced by the plastic, adverse effects due to the emission of the ultraviolet rays hardly occur.

  Further, in the case where the light reflecting film is provided on the upper inner surface of the fluorescent tube in a predetermined opening angle range as described in claim 5, ultraviolet rays directed toward the vicinity of the center of the partition wall portion of the interior tube inside the fluorescent tube, In other words, the ultraviolet light that was spent on unnecessary light emission that is not useful for indoor lighting hits the light reflecting film and bounces back to the opposite side to generate light, so that the substantial illuminance on the indoor side of the fluorescent tube can be improved. it can.

  In addition, as described in claim 6, the light reflecting film exhibits an excellent effect when provided on the inner surface on the upper side with respect to the center of the tube in an opening angle range of about 80 degrees or less. In other words, when the opening angle is about 80 degrees peaked and gradually reduced from there, the amount of light reflected to the lower side of the fluorescent tube naturally decreases, but the amount of light is larger than that of a general fluorescent tube. It is self-explanatory. On the other hand, when the opening angle is larger than about 80 degrees, although the illuminance on the lower side of the fluorescent tube increases in numerical value, the partition wall portion looks dark to the naked eye, and the user feels that it is dark overall. Because.

It is a perspective view of the fluorescent tube apparatus which shows the state which removed the cap part from the exterior tube. It is a disassembled perspective view of the fluorescent tube apparatus which shows the exterior tube of FIG. It is a wiring diagram of a fluorescent tube device. (A), (b) is a perspective view of the cap part of a fluorescent tube case. It is a perspective view which shows the inner side of the cap part of a fluorescent tube case. It is a partially expanded perspective view of the interior tube of the fluorescent tube case. It is a side view of the state which removed the cap part of the fluorescent tube case. It is a vertical side view of the fluorescent tube case which shows another form. It is a disassembled perspective view of the conventional fluorescent tube apparatus which made some exterior tubes into a cross section.

[Embodiment 1]
Embodiment 1 of the present invention will be described below with reference to the drawings.
The fluorescent tube case 1 has an outer shape similar to that of a straight tube fluorescent tube. Cap portions 6 are detachably attached to both ends of an outer tube 4 formed in a substantially cylindrical shape via cap receiving portions 7. Two pin terminals 6 a are provided on the end surface of the cap portion 6.

  Inside the outer tube 4, a cylindrical inner tube 5 extending in the longitudinal direction is provided. The inner space of the outer tube 4 is divided into two regions by the inner tube 5. Of these two regions, the fluorescent tube 2 is housed in the fluorescent tube housing chamber 4a located at the bottom in FIG. 7, and on the circuit housing chamber 4b side (the space inside the interior tube 5) located on the opposite side. Accommodates an inverter type lighting circuit section 8 for controlling lighting of the fluorescent tube 2. The outer tube 4 uses a light-transmitting member at least in a cylindrical portion, and can transmit light emitted from the fluorescent tube 2. Here, having translucency means a state in which light can be widely transmitted. Light having a wavelength other than the visible light band may be transmitted. Accordingly, it includes a transparent material having a very high transmittance, and a material such as milky white plastic that can transmit light but cannot be seen through. In the present embodiment, the outer tube 4 is made of a transparent acrylic material or a transparent polycarbonate material.

  The lighting circuit unit 8 includes a rectifying circuit and a smoothing circuit that convert an alternating current of an alternating current power source into a direct current, and an inverter circuit that converts the direct current into a high frequency alternating current, and a high frequency lighting type (Hf type) fluorescent tube. 2 can be lit. Input cables 10 and 11 connected to the pin terminal 6a of the cap section 6 are connected to the input stage of the lighting circuit section 8 to which the voltage of the AC power supply is input, and a voltage is applied to the fluorescent tube 2 at the output stage. Output cables 12 and 13 are connected.

  FIG. 2 shows a three-dimensional exploded view of the fluorescent tube case 1. For convenience of explanation, the outer tube 4 is shown in a state where the front half is broken. As shown in FIG. 2, the fluorescent tube 2 is accommodated in the fluorescent tube accommodating chamber 4 a of the outer tube 4. And the lighting circuit part 8 is accommodated in the circuit accommodating chamber 4b side, and the output connector 14 of the output cable 12 and the output connector 15 of the output cable 13 are connected to the cap pins 2a and 2b of the fluorescent tube 2, respectively. Yes. Since these output connectors 14 and 15 are formed so as to be detachable with respect to the cap pins 2a and 2b, replacement of the fluorescent tube 2 or the lighting circuit portion 8 is easy.

  That is, since the other can be exchanged without interfering with each other while the other is accommodated in the outer tube 4, the lighting circuit portion 8 is accommodated even in the replacement work of the fluorescent tube 2 that needs to be replaced due to its life. The state can be maintained, and as a result, the circuit component and the cable can be prevented from being damaged. In addition, unlike the conventional ballast arranged on the ceiling or the like as in the conventional configuration, the lighting circuit unit 8 can be easily detached from the fluorescent lamp socket together with the fluorescent tube device, so that the state of deterioration over time can be reduced. It can be easily confirmed visually.

  The cap part 6 is attached to both ends (the cap receiving part 7) of the outer tube 4 accommodating the fluorescent tube 2 and the lighting circuit part 8 connected to each other.

  In this way, a fluorescent tube device in which the high-frequency lighting type fluorescent tube 2 is mounted on the fluorescent tube case 1 integrally holding the lighting circuit unit 8 for lighting the fluorescent tube 2 is an existing starter-type fluorescent tube. Instead, it is attached to a fluorescent lamp device. In addition, since the ballast etc. with which the existing fluorescent lamp apparatus is equipped become unnecessary, it is necessary to remove the circuit connected to this, but it can be processed by a simple operation of simply cutting the wiring. Next, the change of the wiring of the existing fluorescent lamp device will be described with reference to FIG.

  FIG. 3 is a block diagram showing a wiring state in which the fluorescent tube case 1 of the present invention is installed. Here, a rapid starter type lighting circuit is shown as an example of an existing fluorescent lamp device. In FIG. 3, a portion surrounded by a two-dot chain line (a portion excluding the fluorescent tube 2) is the fluorescent tube case 1 according to the first embodiment.

  A portion indicated by a dotted line in FIG. 3 is a portion to be separated when the fluorescent tube case 1 is installed. Specifically, it is necessary to remove the ballast 103, the wiring between the ballast 103 and the power source 101, and the wiring A between the ballast 103 and the fluorescent lamp socket 105. Instead of this, the power source 101 and the fluorescent lamp socket 105 are directly connected by the wiring B indicated by a one-dot chain line. As described above, according to the configuration of the present embodiment, it is possible to use the high-frequency lighting fluorescent tube 2 at low cost by using existing equipment. In FIG. 3, a rapid starter type conventional configuration is shown as an example. Similarly, in a glow starter type fluorescent lamp device, a ballast and a lighting tube are connected from the circuit so that an alternating current is directly connected to the fluorescent lamp socket 105. Just remove it.

  In this way, in contrast to the glow starter type fluorescent lamp apparatus and the rapid starter type fluorescent lamp apparatus that have been widely used in the past, the fluorescent light having the high-frequency lighting type (inverter type) fluorescent tube 2 having excellent lamp efficiency as a light source. Since it can be easily replaced with a tube device, it is possible to change to a configuration that reduces power consumption at low cost.

Next, the cap part 6 is demonstrated using FIG. 4 (a), (b), and FIG. 4A and 4B are perspective views of the outer side of the cap portion 6. As can be seen from FIG. 4A, the cap portion 6 according to the present embodiment is formed with a chamfered tapered portion 6c. A plurality of, for example, slit-shaped through holes 6b are formed in the tapered portion 6c side by side in the circumferential direction of the end surface on which the pin terminal 6a is provided.
In addition, the cap portion 6 may be formed with a stepped shaft-shaped step portion 6d having an end having a small diameter as shown in FIG. 4B instead of the taper portion 6c. A through-hole 6b is formed in 6d (a surface intersecting the axial direction (not shown, but this surface may have a taper like the tapered portion 6c) or a circumferential surface or both surfaces in the axial direction). Has been.

  Generally, since a filament is provided at the end of the fluorescent tube 2, the temperature near the end rises during use. Therefore, when the fluorescent tube 2 is used in a sealed space, the internal air expands due to a temperature rise. Therefore, in the fluorescent tube case 1 according to the present embodiment, by forming a plurality of through-holes 6b in the cap portion 6, the internal pressure is maintained at atmospheric pressure, and thus the cap portion 6 is dropped or increased due to an increase in internal pressure. It is configured to prevent rupture.

  In addition, since the through hole 6b is formed at a position close to the end of the fluorescent tube 2 as described above, the heat generated from the fluorescent tube 2 is easily dissipated to the outside. Thereby, since the temperature rise in the outer tube | pipe 4 can be suppressed, it becomes possible to suppress the thermal deterioration of the lighting circuit part 8 and to aim at the improvement of durability.

  On the other hand, a part of the end face of the cap portion 6 is in close contact with the fluorescent lamp socket 105 in a state where the fluorescent tube apparatus is attached to the existing fluorescent lamp apparatus. Therefore, when the through hole 6b is provided in the end surface of the cap portion 6, there is a possibility that a part of the through hole 6b is blocked by the fluorescent lamp socket 105. However, the through hole 6b of the first embodiment has a chamfered tapered portion 6c or a stepped portion. Since it is provided in the part 6d, a gap for ventilation is formed between the fluorescent lamp socket 105 in the state of use. Therefore, the temperature rise in the outer tube 4 can be suppressed more effectively.

  Further, as shown in FIGS. 4 (a) and 4 (b), the above-described through hole 6b is formed in a slit shape, so that the passage of air is allowed, but the entry of dust, insects and the like is prevented. be able to. For this reason, it is possible to prevent the foreign matter from adhering to the lighting circuit portion 8 which causes a heat burn.

  The heat dissipation effect and the foreign matter intrusion prevention effect as described above can be appropriately selected by using the cap portion 6 having a different thickness of the taper portion 6c. For example, when used in a place where oil smoke or oil vapor is likely to be generated, such as in a kitchen, if the thickness of the taper portion 6c is designed to be at least twice the slit interval of the through holes 6b, Since the probability that oil can adhere to the inner wall of the hole 6b is improved, it is possible to suppress the oil from adhering to the lighting circuit portion 8 inside.

  FIG. 5 is a perspective view of the inside of the cap portion 6 as viewed. As can be seen from FIG. 5, the input cable 11 that supplies power to the lighting circuit portion 8 (see FIG. 1 or 2) is pinned via a short-circuit plate 6 d that short-circuits the pin terminal 6 a on the back side of the cap portion 6. It is connected to the terminal 6a. Thereby, even if it is a case where wiring change is performed and the wiring A is cut | disconnected, it can receive electric power reliably irrespective of an insertion direction.

  Next, the interior pipe 5 will be described with reference to FIGS. As shown in FIGS. 6 and 7, the interior tube 5 according to the present embodiment includes a partition wall portion 5a (inner wall) curved in a downwardly concave shape in FIG. 7 to cover the fluorescent tube 2 in a shade shape, and FIG. A circuit protection portion 5b (circuit protection wall) formed in a dome shape so as to surround the lighting circuit portion 8 described above is integrally formed into a cylindrical shape. In FIG. 7, the circuit protection portion 5 b is formed by an arcuate portion 5 b 1 at the center upper portion that contacts the inner surface of the outer tube 4, and conversely, a concave recess portion 5 b 2 that does not extend along the inner surface of the outer tube 4.

  Both edge portions of the partition wall portion 5a have return edges 5c formed so as to be bent inwardly. Since the return edge 5c is formed in this way, the film-like reflecting plate 16 shown by a dotted line in FIG. 6 can be inserted in the longitudinal direction along the return edge 5c, and can be easily installed without causing twisting. can do.

  Then, the arrangement | positioning in the cap receiving part 7 of such an interior pipe 5 is demonstrated using FIG. FIG. 7 shows a side view of the fluorescent tube case 1 with the cap portion 6 removed.

  As can be seen from FIG. 7, an inner tube guide groove 7d extending in the longitudinal direction is formed on the inner wall of the cap receiving portion 7 so that the return edge 5c of the inner tube 5 can be engaged. The inner pipe 5 can be easily inserted into the outer pipe 4 (see FIG. 1) so that the outer side of the return edge 5c is brought into sliding contact along the inner pipe guide groove 7d.

  In addition, two inner convex portions 7 b (projecting portions) extending in an arc shape along the peripheral wall are formed on the inner wall of the cap receiving portion 7. Both indented portions 5b2 of the inner pipe 5 are gently fitted into the inner convex portion 7b. In this state, the inner tube 5 can maintain a predetermined distance from the outer tube 4 (see FIG. 1) by the recess 5b2 of the circuit protection unit 5b. Since the heat insulation layer by air can be formed by the space | interval between the inner tube | pipe 5 and the outer tube | pipe 4, the influence which the heat | fever generated from the lighting circuit part 8 has on the outer tube | pipe 4 can be reduced. In the present embodiment, the outer tube 4 is formed of an acrylic material or a polycarbonate material. However, by forming the above-described heat insulating layer, it is possible to prevent deformation and alteration due to heat.

  Further, a fluorescent tube holding portion 7 c extends from the inner wall toward the side surface of the fluorescent tube 2 on the fluorescent tube housing chamber 4 a side of the cap receiving portion 7. Thus, since the fluorescent tube 2 is held so as to sandwich the side surface, the posture is stabilized in the outer tube 4.

  Further, the fluorescent tube holding portion 7c is provided with a stopper 7a. The stopper 7a restricts the movement of the fluorescent tube 2 in the longitudinal direction. Thereby, the backlash of the fluorescent tube 2 in the longitudinal direction is prevented, and the output connectors 14 and 15 can be easily attached to and detached from the cap pins 2a and 2b.

[Embodiment 2]
FIG. 8 is a longitudinal sectional side view showing the fluorescent tube device of the second embodiment. In FIG. 8, elements having the same or the same functions as those in the first embodiment are denoted by the same reference numerals.
The second embodiment is different from the first embodiment mainly in the configuration of the fluorescent tube 2 attached to the fluorescent tube case 1.

  That is, the fluorescent tube 2 of Embodiment 1 is a general tube in which a fluorescent material (not shown) is applied to the inner surface of the glass tube 2b, but the fluorescent tube 2 of Embodiment 2 is shown in FIG. As described above, a light reflection film 2c made of, for example, titanium oxide having a high light reflectance in the range of a predetermined opening angle α is provided on the inner surface on the upper side with respect to the tube center O.

  As described above, when the light reflecting film 2c is provided on the upper inner surface of the fluorescent tube 2 in the range of the predetermined opening angle α, the partition wall portion of the inner tube 5 out of the ultraviolet rays generated inside the fluorescent tube 2 Since the ultraviolet rays toward the center of 5a, that is, the ultraviolet rays used for useless light emission that is not useful for indoor illumination, strike the light reflecting film 2c and bounce off to the opposite side to generate light, the indoor side of the fluorescent tube 2 The substantial illuminance is improved.

The opening angle α of the second embodiment is set to about 80 degrees, and according to an experiment, the illuminance at a location 1 m away from the fluorescent tube 2 is improved by 4 to 5% in actual measurement compared to the first embodiment. did. In addition, when the fluorescent tube device in the lit state was confirmed with the naked eye, the overall appearance was good with a bright impression.
On the other hand, when the fluorescent tube 2 having the opening angle α set to about 120 degrees was prepared and mounted, the measured value slightly exceeded the illuminance of the second embodiment, but the partition wall 5a appeared dark to the naked eye and was experienced physically. I got the impression that the amount of light decreased.

  In addition, in Embodiment 1, the inner pipe guide groove 7d extending in the longitudinal direction is provided on the inner wall of the cap receiving portion 7, and the return edge 5c of the inner pipe 5 is engaged with the inner pipe guide groove 7d. In the second embodiment, instead of the configuration in which the inner tube guide groove 7 is provided in the cap receiving portion 7, guide ridges 4c and 4c extending in the longitudinal direction are formed on the inner surface of the outer tube 4 as shown in FIG. The return edge 5c of the inner pipe 5 hits the guide protrusion 4c and is positioned.

  In the first embodiment, the inner convex portion 7b that fits gently into the concave portion 5b2 of the interior pipe 5 is formed on the inner wall of the cap receiving portion 7. However, in the second embodiment, the inner convex portion 7b is not provided and the concave portion 5b2 is provided. A gap formed by the portion 5b2 is continuous in the axial direction so as to communicate with the through hole 6b of the cap portion 6.

  As mentioned above, although this invention was demonstrated about Embodiment 1, 2, of course, this invention is not limited to the said embodiment. For example, in the above-described embodiment, the output connectors 14 and 15 of the output cables 12 and 13 are also configured by two in accordance with the type in which the base pins 2a and 2b of the fluorescent tube 2 are each configured by two. Although an example has been shown, if the base on the fluorescent tube 2 side is of a single type, the output connector may be configured by one. In addition, the output connector in the case of the two configurations may be formed integrally, or may be a clamp-type connector.

  Moreover, in the said embodiment, although the stopper 7a of the cap receiving part 7 showed as an example the structure provided with two places with respect to the one cap receiving part 7, it may be one place. In addition, if one of the two cap receiving portions 7 is provided, movement in at least one direction is restricted, so that the fluorescent tube 2 is stable and the attachment / detachment work of the output connectors 14 and 15 is facilitated. .

DESCRIPTION OF SYMBOLS 1 ... Fluorescent tube case 2 ... Fluorescent tube 2c ... Light reflection film 4 ... Outer tube 4a ... Fluorescent tube storage chamber 4b ... Circuit storage chamber 5 ... Interior tube 5a ... Bulkhead part 5b ... Circuit protection part 6 ... Cap part 8 ... Lighting circuit Portions 14, 15 ... Output connector 105 ... Fluorescent lamp socket O ... Tube center α ... Opening angle

Claims (6)

It is a fluorescent tube case that houses a straight tube type high-frequency lighting dedicated fluorescent tube and lights it inside itself,
An outer tube formed of a material having a cylindrical shape and capable of accommodating the fluorescent tube;
A tubular inner tube that is housed in the upper region on the opposite side when the region corresponding to the fluorescent tube is located inside the outer tube;
A lighting circuit unit detachably accommodated in the interior pipe;
A connector extending from the lighting circuit portion and detachably connectable to a terminal of the fluorescent tube;
A pair of cap parts attached to both ends of the outer tube and having terminals that can be fitted to external fluorescent lamp sockets,
The inner pipe is
A partition wall portion that constitutes the lower side surface of the cylindrical shape and is curved downwardly concavely so as to cover the fluorescent tube in a shade shape, and both edges thereof abut against the inner surface of the outer tube,
A circuit protection part that is formed in a dome shape so as to surround the lighting circuit part, and at least a part of which is in contact with the inner surface of the outer tube;
A fluorescent tube case characterized by comprising:   A part of the circuit protection portion of the inner pipe abuts on the inner surface of the outer tube, and a gap communicating in the axial direction is formed between the remaining portion of the circuit protection portion and the inner surface of the outer tube. The fluorescent tube case according to claim 1.   The fluorescent tube case according to claim 1 or 2, wherein the outer tube is made of plastic.   A fluorescent tube apparatus comprising a fluorescent tube case according to any one of claims 1 to 3 and a straight tube type high-frequency lighting dedicated fluorescent tube mounted thereon.   5. The fluorescent tube device according to claim 4, wherein the fluorescent tube is provided with a light reflecting film having a high light reflectance in a predetermined opening angle range on an inner surface on an upper side with respect to a tube center.   6. The fluorescent tube apparatus according to claim 5, wherein the light reflecting film of the fluorescent tube is provided on the inner surface on the upper side with respect to the tube center in an opening angle range of about 80 degrees or less.

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