JP2010176920A - Lighting device for seamless fluorescent lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device for a seamless fluorescent lamp, wherein the lamp is prevented from being broken so that high stress does not occur while and after mounting the lamp and wherein the lamp is held reliably. <P>SOLUTION: The lighting device 300 for the seamless fluorescent lamp includes two sockets 2a and 2b attached to a body 1 of the lighting device 300 for the seamless fluorescent lamp and is provided with guides 3a and 3b in which one part of a side of a mouth ring 84 of an auxiliary tube 82 can be mounted on the sockets 2a and 2b, wherein at least one socket is moved in a direction parallel to the central line of a main tube 81. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seamless fluorescent lamp, and more particularly to a lighting apparatus for a seamless fluorescent lamp of a type comprising a main pipe and a pair of auxiliary pipes provided near both ends thereof.

  FIG. 5 is a front view showing an example of the structure of a conventional socket 100 for a fluorescent lamp disclosed in, for example, Japanese Patent Laid-Open No. 9-17532. As shown in FIG. 5, the socket body 101 includes an insertion port 102 for inserting a pair of pins provided at one end of a straight tube fluorescent lamp, a vertical passage groove 103, and a rotation passage groove 104. Further, contact terminals 105 are provided on the left and right sides of the rotation passage groove 104, respectively. When the fluorescent lamp is mounted, the base pin 106 of the fluorescent lamp is sandwiched between the contact terminals 105. The fluorescent lamp socket 100 having such a configuration is a first type socket for a straight tube fluorescent lamp.

  When the fluorescent lamp is mounted, first, the pair of cap pins is set vertically, inserted into the insertion port 102 from the lower side of the socket, and then moved upward along the vertical passage groove 103. After reaching the end of the vertical passage groove 103, it is rotated by approximately 90 ° along the rotation passage groove 104 so as to be fixed while being sandwiched between the contact terminals 105.

  As a socket for a straight tube fluorescent lamp, for example, as disclosed in Japanese Patent Application Laid-Open No. 7-22133, a metal receiving surface and a conductive terminal opposed to a base of a lamp are supported by a spring. There is also a second type in which the metal receiving surface and the conductive terminal are pushed in the lamp axis direction.

  Two mainstreams are the second type socket and the first type socket that is inserted by rotating a cap pin into a groove provided on the side surface of the socket and rotated.

  FIG. 6 is a front view (FIG. 6A) and a partial plan view (FIG. 6B) of a general seamless fluorescent lamp 200. As shown in FIG. 6, in the seamless fluorescent lamp 200, auxiliary pipes 82 are connected to both ends of the main pipe 81 via joints 83. A filament (not shown) is provided inside the end of the auxiliary pipe 82 (opposite the joint 83), and a pair of bases 84 of the base 84 provided at the outer end of the auxiliary pipe 82 via lead wires. The pin 85 is electrically connected.

  Since the two auxiliary tubes 82 and the main tube 81 are bonded via the bonding portion 83, a discharge path is formed between the filament of one auxiliary tube 82 and the filament of the other auxiliary tube 82, A phosphor (not shown) in which the auxiliary tube 82 is positioned on the opposite side of the normal illumination side and ultraviolet radiation generated mainly by the discharge of the main tube 81 is applied to the main tube 81 is converted into visible light and used for illumination. The The seamless fluorescent lamp 200 has a feature that a dark portion cannot be formed at the end of the main tube 81 and a uniform light line can be formed when the seamless fluorescent lamps 200 are arranged in a straight line.

  The base 84 of the seamless fluorescent lamp 200 uses G5 as defined by JIS C7709. The axis of the base 84 substantially coincides with the central axis of the auxiliary tube 82 and a pair of adjacent bases. The plane including the pin 85 has a vertical positional relationship with the plane including the center line of the main pipe 81 and the auxiliary pipe 82. In this case, when the seamless fluorescent lamp 200 is provided on the normal ceiling, two adjacent cap pins 85 are arranged horizontally and held uniformly.

Japanese Patent Laid-Open No. 9-17532 Japanese Patent Laid-Open No. 7-22133

  When this seamless fluorescent lamp is mounted on a lighting fixture, in the first type socket, when the auxiliary pipe 82 is rotated, the main pipe 81 whose center axis is apart from the auxiliary pipe 82 must be moved greatly, and the range It is possible to constrain the design of lighting fixtures, such as the inability to install parts.

  Further, when the main pipe 81 is rotated, a large moment is generated with a small force, so that there is a possibility that a large force is applied to the base 84 and the joint 83 and the like is damaged.

  Further, in the second type socket, the force for pushing down the spring when inserted into the socket may cause the joining portion 83 to generate a shift stress in the outward direction of the axis of the main pipe 81 and may be damaged. In addition, stress continues to be applied after mounting, and the cap pin and the conductive terminal may be deformed and fixed, resulting in damage after use for a long time.

  The present invention has been made to solve the above-described problems. When the seamless fluorescent lamp is mounted on a lighting fixture using a seamless fluorescent lamp of a type composed of one main pipe and a pair of auxiliary pipes. In addition, it is possible to prevent a part of the lamp from being subjected to a large stress, to hold the seamless fluorescent lamp securely and without stress, and to reduce the range of movement of the lamp when the seamless fluorescent lamp is mounted. An object of the present invention is to provide a lighting device for a seamless fluorescent lamp with an increased degree of freedom in designing the lighting device.

A lighting device for a seamless fluorescent lamp according to the present invention includes a main tube made of a cylindrical glass tube, and an auxiliary tube provided on the side surfaces near both ends of the main tube so that the central axis thereof is substantially parallel to the auxiliary tube. Are joined so that the inside of the main pipe penetrates in the vicinity of one end, a base on the outside of the other end, a filament on the inside of the other end, and a pair of electrical connections to the base from both ends of the filament In lighting equipment for seamless fluorescent lamps using seamless fluorescent lamps with cap pins,
Provided with two sockets attached to the body of the lighting fixture for seamless fluorescent lamps, provided with a guide so that a part of the base side of the auxiliary pipe can be placed on the socket, and at least one socket is a center line of the main pipe It is designed to move in a direction substantially parallel to

  In addition, the seamless fluorescent lamp lighting device according to the present invention is such that both the cap pins do not reach the socket and both the caps can be placed on the guide in a state where the two sockets are moved closest to each other. The length of the guide and the range of movement of the socket are set so that it can be done.

A lighting device for a seamless fluorescent lamp according to the present invention includes a main tube made of a cylindrical glass tube, and an auxiliary tube provided on the side surfaces near both ends of the main tube so that the central axis thereof is substantially parallel to the auxiliary tube. Are joined so that the inside of the main pipe penetrates in the vicinity of one end, a base on the outside of the other end, a filament on the inside of the other end, and a pair of electrical connections to the base from both ends of the filament In lighting equipment for seamless fluorescent lamps using seamless fluorescent lamps with cap pins,
Provided with two sockets attached to the body of the lighting fixture for seamless fluorescent lamps, provided with a guide so that a part of the base side of the auxiliary pipe can be placed on the socket, and at least one socket is a center line of the main pipe When installing a seamless fluorescent lamp, it can be installed without applying excessive force, preventing large stress from being applied to the seamless fluorescent lamp during and after installation. The lamp can be securely held after being mounted, and the range of movement of the lamp when the seamless fluorescent lamp is mounted can be reduced to increase the degree of freedom in designing the lighting fixture.

FIG. 5 shows the first embodiment, and is a front view of a lighting device 300 for a seamless fluorescent lamp before the seamless fluorescent lamp 200 is attached. FIG. 5 shows the first embodiment, and is a front view of a lighting device 300 for a seamless fluorescent lamp after the seamless fluorescent lamp 200 is attached. FIG. 5 is a diagram showing the first embodiment, and is an enlarged perspective view of a part of a lighting apparatus 300 for a seamless fluorescent lamp before the seamless fluorescent lamp 200 is attached. FIG. 6 is a diagram showing the first embodiment, and is an enlarged perspective view of a part of a lighting fixture 400 for a seamless fluorescent lamp (modification) before the seamless fluorescent lamp 200 is attached. The front view of the socket 100 of the lighting fixture of a prior art example. FIG. 6 is a front view (FIG. 6A) and a partial plan view (FIG. 6B) of a general seamless fluorescent lamp 200 used in the first embodiment or the conventional example.

Embodiment 1 FIG.
1 to 4 show the first embodiment, FIG. 1 is a front view showing a state before the seamless fluorescent lamp 200 of the lighting apparatus 300 for a seamless fluorescent lamp is mounted, and FIG. FIG. 3 is an enlarged perspective view of a part of the seamless fluorescent lamp lighting device 300 before the seamless fluorescent lamp 200 is mounted, and FIG. 4 is a front view of the seamless fluorescent lamp 200 before the seamless fluorescent lamp 200 is mounted. It is an expansion perspective view of a part of lighting fixture 400 for seamless fluorescent lamps (modification).

  The structure of the lighting apparatus 300 for a seamless fluorescent lamp will be described with reference to FIGS. As the seamless fluorescent lamp 200, the general one shown in FIG. 6 is used. The seamless fluorescent lamp 200 may be simply referred to as a lamp.

  Sockets 2 a and 2 b are attached to socket movement grooves 4 a and 4 b provided on the side surface of the main body 1. The sockets 2a and 2b are provided with guides 3a and 3b on the lower sides of which the auxiliary pipe 82 or a base 84 provided at the end thereof can be placed.

  The socket movement grooves 4a and 4b are formed substantially parallel to the center line of the auxiliary pipe 82, and the sockets 2a and 2b assist along the socket movement grooves 4a and 4b within the range of the socket movement grooves 4a and 4b. The center line of the tube 82, that is, the center line of the main tube 81 can be moved substantially in parallel.

  Stoppers 7a and 7b are attached to the sockets 2a and 2b. The movement of the sockets 2a and 2b parallel to the center line of the auxiliary pipe 82 can be stopped by screwing the stoppers 7a and 7b by hand.

  FIG. 1 shows a state in which the sockets 2a and 2b are closest to each other within the movable range. In this state, both bases 84 of the seamless fluorescent lamp 200 are simultaneously mounted on the guides 3a and 3b, and further, the base pins 85 do not reach the sockets 2a and 2b or the receiving surface 5 (see FIG. 3). This can be seen from FIG. In order to create such a state, the lengths of the guides 3a and 3b may be made larger than the length of the cap pin 85, and the lengths of the socket moving grooves 4a and 4b may be made as short as possible.

  As shown in FIG. 2, in a state in which the seamless fluorescent lamp 200 is mounted, both the caps 84 are substantially in contact with the receiving surfaces 5 of the sockets 2a and 2b, and the cap pins 85 are pin insertion holes 6a and 6b (see FIG. 3). And is electrically connected by being sandwiched between conductive terminals (not shown) provided in the sockets 2a and 2b.

  Furthermore, it connects with the terminal of the inverter (not shown) provided in the main body 1 via the electric wire (not shown) which passes the socket 2a, 2b and the inner side of the main body 1 from the conductive terminal, and eventually from the inverter Electrical connection is made up to the filament.

  In the lamp mounting operation, first, the stoppers 7a and 7b are loosened and moved. The sockets 2a and 2b are moved to the right and left sides of the movable range, that is, the positions where the distance between the sockets 2a and 2b is minimized, and both the auxiliary pipes 82 or the caps 4 are moved to both the guides 3a and 3b. Put it on. More specifically, after the lamp is positioned on the side surface of the lighting fixture (before the surface of the seamless fluorescent lamp 200 in FIG. 1), in this example, either the left or right, for example, the end face of the left base 84 is the guide 3a. The lamp is slightly shifted to the left until it reaches the left end, and then the left cap pin 85 is passed over the guide 3a and moved to the top of the guide 3a, and then the lamp is shifted in the opposite direction, that is, to the right. The left base 84 is placed on the guide 3a. Further, the lamp is continuously shifted to the right side until the end face of the right base 84 reaches the right end of the guide 3b. Next, at the position, the right base pin 85 is passed over the guide 3b, and the guide 3b After being moved up, the lamp is shifted slightly to the left and the right base 84 is placed on the guide 3b to obtain the state shown in FIG.

  Next, the sockets 2a and 2b are moved in the direction in which the interval is increased (outside), and the base pin 85 is brought into contact with the receiving surface 5 or the pin insertion holes 6a and 6b. While maintaining the positional relationship between one socket 2a (assumed to be inserted from the right side as an example) and the base 84 (left side in FIG. 1), the other socket 2b is moved further outward while holding the auxiliary pipe 82. Go.

  The cap pin 85 is inserted into the pin insertion holes 6a and 6b, and is eventually sandwiched and fixed by the conductive terminals.

  Next, the other socket 2a (left side) is moved outward. The base pin 85 is inserted into the pin insertion holes 6a and 6b, and this end is finally fixed with the base pin 85 sandwiched between the conductive terminals. Further, the stoppers 7a and 7b are screwed by hand so that the sockets 2a and 2b do not move.

  The force applied to the lamp in the mounting operation is applied when the cap pins 85 at both ends are inserted into the sockets 2a and 2b, respectively, but at least if the auxiliary tube 82 is pressed, the joint 83 and the like have almost no stress. In addition, no great stress is applied to other parts.

  For example, in the second type socket of the conventional example, the force required for contracting the spring corresponding to the length of the base pin is larger than these, and the side for pushing the spring and the base pin are inserted. Since the side is the opposite end, it is often difficult to insert and it is pushed in with a stronger force than necessary.

  Further, in the first type, since the caps and sockets on both sides are simultaneously inserted and rotated, there is a possibility that an unnecessarily strong force may be applied without being successful. In the first embodiment, the possibility of damage caused by applying such a strong force is reduced.

  Further, even after mounting, in the second type socket of the conventional example, stress is continuously applied from both sides by the spring. On the other hand, in the first embodiment, such stress is not continuously applied, and the possibility of damage after long-time use is reduced.

  Further, in the first type shown in the conventional example, it is necessary to turn the main pipe 81 around the axis of the auxiliary pipe 82 at the time of mounting, and there is a limitation in the instrument design that no parts can be placed in the space. In the first embodiment, it is not necessary to rotate, the space required for mounting is small, and the degree of freedom in designing the lighting fixture is increased.

  In the above example shown in the first embodiment, the screw-in type stoppers 7a and 7b are attached to the sockets 2a and 2b. It is attached to prevent it from coming off.

  The stoppers 7a and 7b are not limited to this method as long as they can be reliably stopped after being mounted. For example, the socket moving grooves 4a and 4b may be provided with a step that falls downward, and may be stopped, or the main body 1 may be provided with a type that is lowered to the back of the sockets 2a and 2b. If the holding force of the cap pin 85 of the conductive terminal is sufficient, or if the friction between the socket moving grooves 4a and 4b and the sockets 2a and 2b is sufficient, it can be confirmed that the displacement does not occur for a long time. The stoppers 7a and 7b are not necessary.

  In the above example shown in the first embodiment, the lengths of the socket moving grooves 4a and 4b are adjusted so that the lamp can be easily placed when the sockets 2a and 2b are moved to the shortest. Although time is required for alignment, this length may be further increased. In the above example, when the lamp is inserted, it is necessary to move the base 84 from side to side in order to place it on the guides 3a and 3b. However, if the socket moving grooves 4a and 4b are lengthened and the sockets 2a and 2b are brought closer, After the lamp is translated from the front side of the sheet of FIG. 1 to the center axis of the socket, the socket can be moved and placed as shown in FIG. 1, eliminating the need to move left and right. In particular, there is an advantage that there is no possibility that the lamps interfere with each other when the lighting fixtures are closely arranged.

Further, in the above example shown in the first embodiment, the guide 3a, 3b has a height H such that it covers about ３ of the diameter of the auxiliary pipe 82. If the distance between the auxiliary tube 82 and the main tube 81 (in the example, 4 mm) or less is used, similarly, there is no need to move the lamp to the left and right. It can be placed on 3a, 3b. On the other hand, when the height H of the guide is increased, the auxiliary pipe is less likely to fall off the guide during the mounting operation, and the operation is easier.

  In addition, the socket moving grooves 4a and 4b are provided on the outer side surfaces on both sides of the main body 1. However, the sockets 2a and 2b may be fixed in a state in which the sockets 2a and 2b can be moved only in one direction. Good. For example, a groove may be provided on the inner side of the main body 1 or a convex band may be provided instead of the groove.

  In the first embodiment, both the sockets 2a and 2b are movable, but only one of them may be used. Although there is an advantage that it is simpler, since the required moving distance of the movable side socket is doubled, when the reinforcement is provided between the main pipe 81 and the auxiliary pipe 82, the guides 3a and 3b are connected. There is also a drawback that interference is likely to be a problem.

  When the support body 8 that supports the main pipe 81 is provided in the sockets 2a and 2b as in the modification shown in FIG. 4, the lamp mounting operation is further simplified. That is, if the main tube 81 is held by the support 8 at the same time when the auxiliary tube 82 or the base 84 is placed on the guides 3a and 3b, the lamp is less likely to be detached from the guides 3a and 3b during operation. This is particularly effective when the socket moving grooves 4a and 4b are lengthened.

  In addition, the provision of the support 8 has an advantage that it is difficult to drop when the lamp is damaged due to an accident or the like.

  In FIG. 4, the support body 8 is provided in the sockets 2a and 2b. However, the relative positional relationship between the support body 8 and the sockets 2a and 2b can be set accurately. However, even when the support body 8 is fixed to the main body 1, the positions of the main body 1 and the sockets 2a and 2b and the positions of the main body 1 and the support body 8 can be accurately set. Is obtained.

  In the first embodiment, if the variation in the relative positions of the cap pins 85 at both ends is large, there is a possibility that stress is applied when the socket pins 2a and 2b are fixed. Therefore, the metal receiving surface 5, the pin insertion holes 6a and 6b, and the conductive terminals are configured to rotate with respect to the socket body, or the pin insertion holes 6a and 6b are expanded at least in the circumferential direction. It is preferable to take measures such as increasing the range (circumferential direction) in which the conductive terminals are properly sandwiched.

  1 body, 2a socket, 2b socket, 3a guide, 3b guide, 4a socket moving groove, 4b socket moving groove, 5 metal receiving surface, 6a pin insertion hole, 6b pin insertion hole, 7a stopper, 7b stopper, 8 support, 81 main pipe, 82 auxiliary pipe, 83 joint, 84 base, 85 base pin, 100 socket, 101 socket body, 102 insertion slot, 103 vertical passage groove, 104 rotation passage groove, 105 contact terminal, 106 base pin, 200 seamless fluorescence Lamp, 300 seamless fluorescent lamp lighting fixture, 400 seamless fluorescent lamp lighting fixture.

Claims (2)

A main tube made of a cylindrical glass tube, and an auxiliary tube provided with side surfaces near both ends of the main tube so that its central axis is substantially parallel to the main tube, and the auxiliary tube Seamless fluorescence that is joined so that the inside penetrates, a base is provided outside the other end, a filament is provided inside the other end, and a pair of base pins electrically connected to the base from both ends of the filament are provided. In a lighting device for a seamless fluorescent lamp using a lamp,
Provided with two sockets attached to the main body of the seamless fluorescent lamp lighting fixture, provided with a guide that allows a part of the base side of the auxiliary tube to be placed on the socket, and at least one socket is A seamless fluorescent lamp luminaire characterized by moving in a direction substantially parallel to the center line of the main tube.   The length of the guide is such that both the base pins do not reach the socket and both the bases can rest on the guide with the two sockets moved closest to each other. 2. The seamless fluorescent lamp lighting device according to claim 1, wherein a range in which the socket moves is set.

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