JPH0473877A - Lamp socket - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a single-cap type fluorescent lamp in which locking protrusions are provided on both sides of a cap portion having a terminal pin. Regarding the lamp socket to which the lamp is attached.

(Prior Art) Conventional lamp sockets for mounting single-cap fluorescent lamps, which have locking protrusions on both sides of the cap, simply connect the terminal pins of the fluorescent lamp to the front of the lamp mounting surface of the socket body. A lamp socket that is simply inserted into a terminal pin insertion hole opened on the lamp mounting surface, or as described in Japanese Utility Model Application No. 57-82091,
Insert the terminal pin of the fluorescent lamp into the terminal pin insertion hole from the front of the lamp mounting surface of the socket body, and the locking protrusions on the base of the fluorescent lamp will be biased by the leaf springs, and the fluorescent lamp will slide away from the socket body. A lampholder with a structure that holds the socket so that it does not fall, or
As described in Publication No. 1, insert the terminal pin of the fluorescent lamp into the terminal pin insertion hole from the front of the lamp mounting surface of the socket body, and lock it by rotating the base part around the axis of the fluorescent lamp. Lamp sockets and the like are known that have a structure in which a protrusion is engaged with and held in a socket body.

However, with the lamp sockets of the conventional structure described above, when pulling out the terminal pin of the fluorescent lamp from the terminal pin insertion hole, the glass bulb of the fluorescent lamp hits the inner surface of the lighting fixture to which the lamp socket is installed. However, there are problems in that the glass bulb may be damaged.

Therefore, in order to prevent damage to the glass bulb when pulling out the fluorescent lamp from the lamp socket, we developed
As described in Publication No. 01479, the socket body is provided so as to be rotatable from the position of the socket body when the fluorescent lamp is lit, and when the fluorescent lamp is attached, the lamp mounting surface of the socket body is provided so that the lamp socket is attached. There is a lamp socket in which the lamp is turned on by pointing it at the irradiation aperture of the lighting fixture, attaching the fluorescent lamp to the lamp mounting surface, and then rotating the socket body back to its original position and fixing it. It is being Also, JP-A-1-16168
As described in Publication No. 6, a support wall for a fluorescent lamp is provided on the side of a socket body having a lamp mounting surface, and the fluorescent lamp is guided by the support wall from an angle of the lamp mounting surface and attached to the socket body. There is a known lamp socket in which the locking protrusions of the fluorescent lamp are locked to the connecting parts provided at both ends of the support wall to prevent the fluorescent lamp from falling out of the socket body. It is being

(Problem to be Solved by the Invention) However, for example, in the lamp socket having the structure described in the above-mentioned Japanese Utility Model Application Publication No. 63-101479, the structure of the lamp socket is complicated because the socket main body is rotatably provided. Along with this, there is a problem in that the number of parts constituting the lamp socket is large and the lamp socket itself becomes large.

Furthermore, in the lamp socket having the structure described in the above-mentioned Japanese Patent Application Laid-Open No. 1-161686, the connecting portion of the support wall provided on the side of the socket body prevents the base of the fluorescent lamp from detaching from the socket body. However, this joint alone cannot support the entire fluorescent lamp. Therefore, in order to support the entire fluorescent lamp, a lamp holder 33 that supports the glass bulb 32 of the fluorescent lamp 31 is attached to the lighting fixture together with this lamp socket 34, as shown in FIG. However, due to deformation caused by heat generated in the fluorescent lamp 31 when the lamp holder 33 is turned on, the lamp holder 33 cannot horizontally support the glass bulb 32 of the fluorescent lamp 31, and the fluorescent lamp 31 comes out from the lamp socket 34. There are problems such as it may fall.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a lamp socket in which the socket body does not have a rotating part, and in which the entire fluorescent lamp can be supported by the lamp socket alone.

[Structure of the invention]

(Means for Solving the Problems) A lamp socket according to claim 1 of the present invention is a lamp socket for mounting a single-cap type fluorescent lamp having locking protrusions on both sides of a cap portion having a terminal pin. , the socket body has a lamp mounting surface in which a terminal pin insertion hole with a conductive piece disposed therein for connecting the terminal pin of the fluorescent lamp is opened, and the base of the fluorescent lamp is mounted on both sides of this lamp mounting surface. A support portion is formed to horizontally support a locking protrusion protruding from the portion, and the locking portion is attached to the support portion along the direction in which the terminal pin of the fluorescent lamp is inserted into the terminal pin insertion hole. A guide portion is formed to guide the protrusion.

In the lamp socket according to claim 2 of the present invention, the socket body has a regulation that restricts movement of the locking protrusion of the fluorescent lamp in the direction of pulling out the terminal pin of the fluorescent lamp from the terminal pin insertion hole. It has a section.

In the lamp socket according to claim 3 of the present invention, first grooves are formed on both side surfaces of the socket main body, the first grooves being inclined obliquely from below and having upper edges serving as the regulating portions, and a second tube, which communicates with the cut groove of the fluorescent lamp, extends toward the lamp mounting surface in the direction in which the terminal pin of the fluorescent lamp is inserted into the terminal pin insertion hole, and whose upper edge serves as the guide portion and whose lower edge serves as the support portion. The kerf grooves are formed.

(Function) In the lamp socket according to claim 1 of the present invention, the guide portion of the socket body allows the terminal pin of the fluorescent lamp to be inserted into the terminal pin insertion hole opened in the lamp mounting surface of the socket body. , the locking protrusions on both sides of the base of this fluorescent lamp are guided by the support part of the socket body,
The support part supports the locking protrusion in a horizontal state, and the terminal pin of the fluorescent lamp is inserted into the terminal pin insertion hole opened in the lamp mounting surface, and the terminal pin of the fluorescent lamp is inserted into the terminal pin insertion hole. are respectively connected to conductive pieces arranged in the .

Further, since this lamp socket supports the locking protrusion of the fluorescent lamp in a horizontal state by the support part, the entire fluorescent lamp can be supported by this lamp socket alone. Furthermore, since this lamp socket has no rotating parts, the number of assembly parts is small and it can be assembled compactly.

In the lamp socket according to claim 2 of the present invention, when the terminal pin of the fluorescent lamp is pulled out from the terminal pin insertion hole in the direction of the terminal pin insertion hole, the locking protrusion of the fluorescent lamp is engaged with the regulating portion of the socket body. This locking prevents the glass bulb of the fluorescent lamp from colliding with the inner surface of the lighting fixture to which this lamp socket is attached and causing damage.

In the lamp socket according to claim 3 of the present invention, the locking protrusion of the fluorescent lamp is slid toward the lamp mounting surface along the first grooves formed on both sides of the socket body, and then , the locking protrusion is guided and slid toward the lamp mounting surface along the guide portion consisting of the upper edge of the second kerf, and the second kerf on both sides of the lamp mounting surface The locking protrusions are supported in a horizontal state by the support portions formed by the lower edges of the fluorescent lamps, and the fluorescent lamps are mounted thereon. Further, when the fluorescent lamp is pulled out from the socket body in the direction in which the terminal pin of the fluorescent lamp is pulled out from the terminal pin insertion hole of the socket body, the restriction portion consisting of the upper edge of the first cut groove is used to lock the fluorescent lamp. The protrusions are respectively locked to prevent contact between the lighting fixture to which the socket body is attached and the glass bulb of the fluorescent lamp, thereby preventing damage to the glass bulb of the fluorescent lamp.

(Embodiment) An embodiment of the lamp socket of the present invention is shown in FIGS. 1 to 11.
This will be explained based on the diagram.

In FIG. 1, 1 is a cap part 3 attached to one end of a glass bulb 2.
This is a so-called single-cap type fluorescent lamp, and four terminal pins 4 are planted in the bottom of the cap 3.
Locking protrusions 5 are provided on both sides of the base portion 3 in a protruding manner. The end surface of the locking protrusion 5 on the pull-out direction side is formed into an inclined surface Ss, 5b, which is inclined in the insertion connection direction from the approximate center in the height direction toward the upper and lower edges, respectively.

Reference numeral 6 denotes a socket body, and the socket body 6 is formed with a lamp mounting surface 7 that faces the bottom of the base 3 of the fluorescent lamp 1. On this lamp mounting surface 7, there is a fluorescent lamp 1.
Terminal pin insertion holes 8 are formed at positions facing the terminal pins 4, and inside the terminal pin insertion holes 8,
A conductive piece 9 having the shape shown in FIGS. 3 and 4, for example, is provided to connect with the terminal pin 4 inserted into the terminal pin insertion hole 8 and to supply power to the fluorescent lamp 1.

Furthermore, supporting side surfaces 1G are formed integrally with the socket body 6 to protrude from both sides of the front surface of the socket body 6, with an interval slightly wider than the lateral length of the base portion 3 of the fluorescent lamp 1. First locking protrusions 5 are inserted into the supporting side surface 10 and are respectively slanted diagonally upward from below and protrude from both sides of the base 3 of the fluorescent lamp 1 toward the lamp mounting surface 7. A kerf 11 is formed to open at the front edge, and further communicates with the inner end side of the first kerf 11, and the terminal pin 4 of the fluorescent lamp 1 is inserted into the terminal pin insertion hole 8. A second kerf 12 is formed in the direction up to the lamp mounting surface 7. Note that both the first kerf 11 and the second kerf 12 allow the locking protrusion 5 of the fluorescent lamp 1 to move between the first kerf 11 and the second kerf 12. In particular, the second kerf 12 has a width of
The locking protrusion 5 is formed to be slightly wider than the width of the fluorescent lamp 1 in the axial direction.

The upper edge of this first cut groove 11 restricts the movement of the locking protrusion 5 of the fluorescent lamp 1 when the terminal pin 4 of the fluorescent lamp 1 is completely pulled out from the terminal pin insertion hole 8. This is the regulation section I3. Further, the lower end edge of the second groove 12 serves as a support portion 14 that horizontally supports the locking protrusion 5 of the fluorescent lamp 1 with the base portion 3 mounted on the lamp mounting surface 7 from below. . Furthermore, the second kerf 1
The upper edge of 2 is provided with a guide portion 15 that guides the locking protrusion 5 of the fluorescent lamp 1 to the support portion I4 along the direction in which the terminal pin 4 of the fluorescent lamp 1 is inserted into the terminal pin insertion hole 8.
It becomes.

Further, the upper surface 16 between the supporting side surfaces 10 of the socket main body 6 is
This serves as a mounting surface for attaching the socket body 6 to the instrument body by inserting screws (not shown) into the screw insertion holes 17.

In this way, the lamp socket 18 is constituted by the socket main body 6 described above.

Next, the operation of this embodiment will be explained.

First, a method for attaching and detaching the fluorescent lamp 1 to the lamp socket 18 attached to the lighting fixture 19 will be explained.

When attaching the fluorescent lamp 1 to this lamp socket 18,
As shown in FIG. 5 and 6rgJ, the locking protrusions 5 of the base 3 of the fluorescent lamp 1 are inserted along the first grooves 11, respectively. Next, when inserting the locking protrusion 5 along the second cut groove 12, the terminal pin 4 is inserted into the terminal pin insertion hole 8 in the axial direction of the fluorescent lamp 1 as shown in FIG. 8, and the locking protrusion 5 is guided by the guide part 15 and attached to the support part 14 as shown in FIG.
guided by. At the same time, the terminal pin 4 is inserted into the terminal pin insertion hole 8 of the lamp mounting surface 7, and this terminal pin 4 is inserted into the terminal pin insertion hole 8 of the lamp mounting surface 7.
Once connected to the conductive pieces 9, the installation of the fluorescent lamp 1 into the lamp socket 18 is completed.

When the fluorescent lamp 1 is attached to the lamp socket 18, the support portion 14 supports the locking projections 5 of the fluorescent lamp 1 from below in a horizontal state.
When the total length of the glass bulb 2 is short, this lamp socket 18 can support the entire fluorescent lamp 1. Therefore, only when the glass bulb 2 of the fluorescent lamp 1 is long, a lamp holder that supports the glass bulb 2 auxiliary may be attached to the main body of the device. Furthermore, even when the lamp holder is attached, the fluorescent lamp 1 is mainly supported by the lamp socket 18, so the lamp holder becomes unable to support the glass bulb 2 due to deformation caused by long-term use of the lamp holder. Even if fluorescent lamp 1
will not fall out of the lamp socket 18.

Furthermore, since the lamp socket 18 has no rotating parts, the number of component parts can be reduced, and the shape of the lamp socket 18 can be reduced (
can.

Next, when removing the fluorescent lamp 1 from the lamp socket 18, as shown in FIG. Since the locking protrusion 5 is locked to the restriction portion 13 and prevented from moving, the fluorescent lamp 1 is secured to the lamp mounting surface 7.
It stops at a position where a predetermined distance is maintained.

Next, as shown in FIG. 10, the other end of the glass bulb 2 of the fluorescent lamp 1 is directed downward, and the locking protrusion 5 is moved downward along the first groove 11. 11, remove the fluorescent lamp 1 from the pump socket 18.

In this way, when the fluorescent lamp 1 is pulled out from the lamp socket 18, the locking protrusion 5 is locked to the restriction part 13 and the fluorescent lamp 1 does not come into contact with the inner surface of the lighting fixture 19, so that the glass of the fluorescent lamp 1 Damage to the valve 2 can be prevented.

Further, since the horizontal movement distance of the fluorescent lamp 1 when the fluorescent lamp 1 is removed from the lamp socket 18 is limited by the regulating portion 13, the fluorescent lamp 1 of the lighting fixture 19 to which the lamp socket 18 is attached is limited. The length in the axial direction can also be shortened to the sum of the total length of the fluorescent lamp 1 and the moving distance of the locking protrusion 5.

Next, a second embodiment will be described based on FIGS. 12 to 18.

In this embodiment, as shown in FIG.
a, and further communicates with this first kerf 113,
A second groove 121 whose lower edge extends in the direction in which the terminal pin 4 is inserted into the terminal pin insertion hole 8 and reaches the lamp mounting surface 7.
form. The first kerf 11g has a width that allows the locking protrusion 5 to move between the first kerfs 111, and the second kerf 121 has a width that is equal to the width of the second kerf 121. It is formed much wider than the width of the groove 111.

Note that the other configurations are the same as those of the previous embodiment.

Next, the operation of this embodiment will be explained.

First, when attaching the fluorescent lamp 1 to the lamp socket 18, as shown in FIG. 13, the first kerf 11! Push up the fluorescent lamp 1 along the Next, as shown in FIG. 14, when the lower end of each locking protrusion 5 of the base 3 of the fluorescent lamp 1 is at the same height as the lower edge of the second cut groove 12a, When the fluorescent lamp 1 is pushed toward the lamp mounting surface 7 in the direction in which the terminal pin 4 of the fluorescent lamp 1 is inserted into the terminal pin insertion hole 8, the fluorescent lamp 1 is mounted in the lamp socket 18 as shown in FIG. be done.

In this way, similarly to the first embodiment, the fluorescent lamp 1
When the fluorescent lamp 1 is installed in the lamp socket 18, the locking protrusions 5 of the fluorescent lamp 1 are horizontally supported from below by the supporting parts 14, so if the overall length of the glass bulb 2 of the fluorescent lamp 1 is short, The entire fluorescent lamp 1 can be supported by this lamp socket 18.

Further, when the entire length of the glass bulb 2 is long, it is sufficient to support the glass bulb 2 auxiliarily with a lamp holder. Even if the lamp holder that supplementarily supports the glass bulb 2 is deformed and becomes unable to support the glass bulb 2, the main problem is that the lamp holder 18
supports fluorescent lamp 1, so this fluorescent lamp 1
The fluorescent lamp 1 will not fall out of the lamp socket 18.

Next, when removing the fluorescent lamp 1 from the lamp socket 18, the fluorescent lamp 1 is pulled out from the socket body 6 in the direction in which the terminal pin 4 is pulled out from the terminal pin insertion hole 8, as shown in FIG. Then, as shown in FIG.
When the fluorescent lamp 1 is moved substantially vertically downward along the line 1a, the fluorescent lamp 1 is removed from the lamp socket 18, as shown in FIG.

In this way, when the terminal pin 4 is pulled out from the terminal pin insertion hole 8, the movement of the locking protrusion 5 of the fluorescent lamp 1 is caused by the first movement.
As in the embodiment described above, since the glass bulb 2 is locked by the regulating portion 13, the glass bulb 2 is prevented from coming into contact with the inner surface of the lighting fixture 19 and being damaged.

Next, a third embodiment will be described based on FIG. 19.

In FIG. 19, a substantially plate-shaped conductive piece 20 is provided inside a terminal pin insertion hole 8 formed in the lamp mounting surface 7, and is urged against the lamp mounting surface 7 by a coiled spring 21. has been done.

Furthermore, substantially fan-shaped openings 22 that contract toward the lamp mounting surface 7 are formed on both side surfaces 10 of the socket body 6, respectively. Furthermore, the terminal pin 4 is connected to this opening 22 and
A cut groove 23 having the width of the locking protrusion 5 is formed in the direction in which the terminal pin insertion hole 8 is inserted. The lower edge of this cut groove 23 serves as a support portion 143 that supports the locking protrusion 5 of the fluorescent lamp 1 attached to the socket body 6.

Moreover, the upper end edge of this kerf 23 is connected to this support portion 14! A guide portion 15 that guides the locking protrusion 5! It becomes.

Reference numeral 24 denotes a lamp holder, which is attached to the lighting fixture 19 so as to hold the closed end surface 25, which is the other end of the glass bulb 2 of the fluorescent lamp 1, and urge the socket body 6.

Next, the operation of this embodiment will be explained.

In this fluorescent lamp 1, the locking protrusion 5 is guided to the support part 14a by the guide part 15a, the terminal pin 4 is inserted into the terminal pin insertion hole 8, and the glass bulb is inserted into the lamp holder 24. When the closed end surface 25 of 2 is locked, the fluorescent lamp 1 is installed in the lamp socket 18. Therefore,
This fluorescent lamp 1 consists of a coiled spring 21 and a lamp holder 2.
4 and is elastically supported and attached to the lamp socket 18.

Further, the locking protrusion 5 of the fluorescent lamp 1 is horizontally supported from below by the support portion 14a.

Further, even if the lamp holder 24 is deformed due to long-term use, the fluorescent lamp 1 is always biased toward the lamp holder 24 by the coiled spring 21. The closed end face 25 of the glass bulb 2 is always locked so that the fluorescent lamp 1 does not come out of the lamp socket I8 and fall.

〔Effect of the invention〕

According to claim 1 of the present invention, when the fluorescent lamp is mounted in the lamp socket, the locking protrusion of the fluorescent lamp is guided by the guide portion of the socket body and reaches the support portion, and this support portion is connected to the locking portion. The protrusion is supported horizontally. Therefore,
The fluorescent lamp, which is connected to the internal conductive piece by inserting the terminal pin into the terminal pin insertion hole, is supported by the support portion of the socket body.

In this way, in this lamp socket, the locking protrusion of the fluorescent lamp is horizontally supported from below by the support part, so that the entire fluorescent lamp can be supported by this lamp socket alone. Furthermore, since this lamp socket has no rotating parts, the number of assembly parts is small and it can be assembled compactly.

According to claim 2 of the present invention, when the terminal pin of the fluorescent lamp is pulled out from the terminal pin insertion hole, the locking protrusion of the fluorescent lamp is locked with the regulating part of the socket body, so that the lamp socket is It does not collide with the inner surface of the attached lighting fixture, and damage to the glass bulb of the fluorescent lamp can be prevented.

According to claim 3 of the present invention, the first kerf formed on both side surfaces of the socket body, and the second kerf communicating with the first kerf.
By sliding the locking protrusion of the fluorescent lamp along the edge of the cut groove, the fluorescent lamp can be freely attached to the lamp socket. The lever lampholder can support a fluorescent lamp.

Further, when pulling out the fluorescent lamp from the lamp socket from the lamp mounting surface in the direction of pulling out the terminal pin from the terminal pin insertion hole, the locking protrusion of the fluorescent lamp is the upper edge of the second cut groove. The lamp socket is locked by the regulating portion to prevent contact between the lighting fixture to which the lamp socket is attached and the glass bulb of the fluorescent lamp, thereby preventing damage to the glass bulb of the fluorescent lamp.

Therefore, since this lamp socket does not have a rotating part, the number of parts constituting the lamp socket is small, and the shape of the lamp socket can also be made smaller.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the lamp socket of the present invention, FIG. 2 is a perspective view of the same, FIG. 3 is a top view of a conductive piece disposed inside the lamp mounting surface, and FIG. is a side view of the same as above, FIGS.
Figure 1 is an explanatory diagram for sequentially explaining the operation of removing the fluorescent lamp from the lamp socket, Figure 12 is a perspective view showing a second embodiment of the lamp socket, and Figures 13 to 15 are diagrams showing how to remove the fluorescent lamp from the lamp socket. An explanatory diagram for sequentially explaining the operation of attaching a lamp, FIGS. 16 to 18 are explanatory diagrams for sequentially explaining the operation of removing a fluorescent lamp from the same lamp socket, and FIG. 19 is a lamp socket according to the third embodiment of the same. FIG. 20 is a side view showing a state in which a fluorescent lamp is attached to a conventional lamp socket, and FIG. 20 is a perspective view showing a state in which a fluorescent lamp is attached to a conventional lamp socket. 1. Fluorescent lamp, 4. Terminal pin, 5. Locking protrusion, 6. Socket body, 7. Lamp mounting surface, 8.
Terminal pin insertion hole, 9...conductive piece, 11...first kerf,
12...Second kerf, 13...Restricting part, 14...Supporting part, 15...Guiding part, 18...Lamp socket. ) 辷■ Town thinking

Claims (3)

[Claims] (1) In a lamp socket in which a single-cap type fluorescent lamp is mounted, the socket body has a conductive piece to connect the terminal pin of the fluorescent lamp. a support part having a lamp mounting surface with a terminal pin insertion hole disposed therein, and horizontally supporting a locking protrusion protruding from the base of the fluorescent lamp on both sides of the lamp mounting surface; and a guide portion is formed on the support portion to guide the locking protrusion along the direction in which the terminal pin of the fluorescent lamp is inserted into the terminal pin insertion hole. . (2) The socket body is provided with a regulating part that regulates movement of the locking protrusion of the fluorescent lamp in the direction of pulling out the terminal pin of the fluorescent lamp from the terminal pin insertion hole. lamp socket. (3) First kerfs are formed on both side surfaces of the socket body, the upper edges of which are obliquely inclined from below and whose upper edges serve as the regulating portions, and communicate with the first kerfs, and 2. A second kerf is formed on the lamp mounting surface in the direction in which the terminal pin of the lamp is inserted into the terminal pin insertion hole, the upper edge of which serves as the guide portion, and the lower edge of which serves as the support portion. Lamp socket described in 2.