JPS59501807A - lamp holder - 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] Name of invention lamp holder The present invention relates to an O lamp holder. Traditional lamp holders include a body that supports fixed terminals to which electrical cables are connected. The main body defines a socket into which the light bulb is inserted during use. elastically attached The contact, often in the form of a bottle, is placed in a socket to make contact with the bulb being inserted. The contacts are permanently electrically connected to fixed terminals.

When the bulb is not inserted into the socket, the contacts are exposed and you can easily touch the contacts. be able to. This can be done, for example, by removing a burned-out light bulb in a lamp holder on the ceiling. When replacing a burned out bulb or after removing a burnt out bulb, accidentally insert your finger into the socket. I wake up when it happens. In the latter case, the lamp holder was placed at the bedside, etc. It is especially dangerous for children if left in an undisturbed condition.

Current-carrying terminal of a conventional 3-bin outlet into which the cable end plug is inserted. The neutral terminal is generally covered by a shutter, and the grounding pin of the plug is 6D. The shutter is removed when plugged into the ground terminal socket. A socket like this When the current-carrying terminal needs to be electrically connected, the outlet outlet is used to connect one bottle first. Insert it into the ground terminal socket, then insert the male 1" bottle into the energizing terminal socket. It is relatively safe. In contrast, conventional lamp holders If the current-carrying terminal and neutral terminal are not protected by a shutter, or if they are The common socket in which the terminals are placed is large enough to fit a finger.

Connect the contacts inside the socket with the cable, except when the bulb is inserted into the socket. Various attempts have been made to isolate the cable from the terminal.

In some prior art configurations, the contact bin is attached to the body of the lamp holder. Because it is a spring, the bottle is pushed axially up against the socket from inside the socket. Do not allow the bottle to come into contact with the cable terminals unless otherwise specified. Unfortunately, it is added to the contact If the spring force is not too great, the contacts can be easily pushed up with a finger. On the other hand, the spring If the force is too high, it will be difficult to insert the bulb into the socket, and the contacts will The bulb becomes embedded in the soft lead provided in at least one terminal. Removal becomes more difficult.

Damage to the bulb occurs and the lamp holder feels too tight.

3 In another prior art configuration described in U.S. Pat. No. 4,222,623: The contacts are supported on rotatable or linearly movable supports. light bulb is inserted , the support, contrary to the action of the return spring, position relative to the socket to a second position where the contacts are electrically connected to the cable terminals. to move laterally. Release the support only when one of the contacts is pressed down A moving spring-loaded locking device is provided. However, the spring and return of the locking device The springs are relatively weak, so an inserted finger can easily overcome them. Otherwise, the spring may be relatively strong and a mechanism with too much rigidity may be formed, causing damage. is insufficient.

Yet another prior art arrangement is described in British Patent No. 2,069,252. . This configuration is also based on the rotation of the support, which rotates unless the contact is pressed down. is prevented. However, if the contact is accidentally applied to prevent operation, The same stiffness problem arises because the spring force must be increased. . A pressure of about 7 to 101 bs (3,18 to 4.55 kg) is applied to the two contacts. It is said that Karu.

It is an object of the invention to provide an improved lamp holder.

According to the invention, a socket in which the light bulb is inserted axially with respect to the socket during use The housing is supported by the housing and the power cable is connected during use. fixed cable terminal, exposed and accessible inside the socket and plugged in Contacts that are electrically connected to the light bulb, installed inside the housing and with a small diameter of each contact. A support that partially supports the contacts from the terminals as a result of the bulb being inserted. moving between a first position where the contacts are insulated and a second position where the contacts are electrically connected to the terminals; possible support and biasing the support to the first position when the bulb is not inserted. when the bulb is inserted into the housing or when the support is inserted into the housing. When removed from the housing, it contacts the inserted bulb and is attached to the housing together with the bulb. and engages at least one vial that moves axially, the vial engaging the inserted finger. It is usually not possible to apply enough force to the bottle to move the yaw pin axially. and the support axially moves the at least one bin. A lamp holder is provided which is arranged to prevent movement into a second position sufficient to .

The bottle can be easily touched with an inserted finger, but the bottle cannot be touched with an unprotected finger. It has a sharp point that causes pain that cannot be pushed in the axial direction. or, A tool is used to engage only the outer periphery of the bulb into which the bottle is inserted, and to engage the tip of the bottle. socket so that it is extremely difficult to move the bin axially without using may be placed adjacent to the inner wall of the Axial direction required to connect contacts and terminals force must be applied to the bottle, but it is difficult to apply such a force Therefore, the spring force that must be overcome is relatively small. lamp holder like this It is easy to use and does not give the user a stiff feeling when separated from the cuff. , the contact is spring-loaded, so even if the contact is pushed in the axial direction, the support will not move in the axial direction. stomach. Alternatively, the support is such that it is freely accessible inside the socket. In this case, one or more wires with a gap narrower than the width of a finger between them and the socket may be used. Direct contact between the support and the inserted finger by providing multiple sharp pins or if the finger is pressed directly against the support, the support will not create an electrical connection. It is necessary to prevent the vehicle from being moved in such a way that the Force is applied directly to the support Any movement of the support that creates a consequent electrical connection will cause the bottle to The support is rotated when the support is moved with the This can be prevented by configuring the bottle to cooperate with the support so that it does not occur. I can do it.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of the invention for receiving a plug-in light bulb: Figure 2 is similar to the first embodiment but adapted to accept an Edison screw-type light bulb. A diagram showing a second embodiment of the present invention; FIG. 3 shows a third embodiment of the invention for receiving a plug-in light bulb: FIG. 4 shows a fourth embodiment of the invention of a reservoir for receiving a plug-in light bulb; and Figures 5 to 18 detail a fifth embodiment of the invention for receiving a plug-in light bulb. FIG. 5 shows the relative orientation of the contact support and the lamp holder housing. 6-9 are schematic cross-sectional views showing the housing along line 8-8 of FIG. 7 is an axial cross-sectional view of the housing along line 9--9 of FIG. 6; Figures 10 and 11 are a bottom view and an axial sectional view of the lamp holder cap. Figures 12 and 13 are a side view and an end view of the contact support. The figure is an end view of the latch, and the seventh Figures 15 and 16 show the sides of lines 15-15 and 16-16 in Figures 1-4. Figures 17 and 18 are top views, respectively, showing the formation of contacts and fixed terminals. FIG.

Explanation will be made regarding FIG. The illustrated lamp holder consists of a housing 1. Kya 2. A support 3 movable axially relative to the housing and along the axis of the housing. The bin 4 is provided with a bin 4 extending therefrom. The bottle 4 has a flanged head and the compression spring 5 has a It is carried on this flanged head. The bin is a partition that is integral with the support and housing and extends through the wall 6 so that the support is pressed against the partition wall 6 by the compression spring 5. The flanged head of the sea urchin bottle engages the support.

The partition wall 6 supports the contact elements 7 and 8 and the support 3 supports the contact elements 9 and 10. Ru. Contact elements 7 and 9 are connected pneumatically by spring 11 and contact elements 8 and 10 is electrically connected to spring 12.

The lower surface of the cap 2 has a fixed terminal 13 to which a power cable is fixed as in the conventional case. and 14 are supported.

The cap may be secured by any convenient means, for example by screws (not shown). Fixed to Uzing.

When the light bulb is inserted into the socket defined by the housing, its plug-in pin The housing has a slot (1) so that the bulb moves parallel to the axis of the housing without rotating. (only two slots are shown). Next, the light bulb makes contact with the tip of bottle 4. and push the bottle up towards the compression spring 5. The support 3 then has springs 11 and 1 Due to the action of 2, it moves upward freely. The bulb is finally pushed into place, When rotated into engagement with the bayonet slot, the bulb terminals abut contact elements 7 and 8. and presses these elements against springs 11 and 12, ensuring good electrical contact. be done. Contact elements 9 and 10 abut constant terminals 13 and 14. Do it like this The light bulb is then electrically connected to the power cable.

When the bulb is removed, the support 3 moves away from the fixed terminals 13 and 14 and the contact elements 7 and and 8 are insulated.

As long as the bottle 4 is not pushed up even if a person inserts a finger into the socket, contact element 7 and and 8 remain insulated. Since the tip of the bottle is sharp, the compression spring 5 Even if the pressure is not particularly strong, trying to push the bottle up will always cause a sharp pain in your fingers. feel. If the contact elements 7 and 8 or one of them is pushed up, the support 3' does not move. Therefore, contact elements 7 and 8 remain insulated. In this way, accidental electric shock can be avoided. avoided.

Next, FIG. 2 will be explained. The illustrated embodiment can be used as a variant with a lamp socket. The second point is that the socket is shaped to be suitable for receiving an Edison screw-in light bulb. In the figures, the same reference numerals as in FIG. 1 are used unless inappropriate. The partition wall 6 is , instead of supporting an elastically movable contact element, three elastic terminals 15.16 and 17 are fixedly supported. The elastic terminal 15 is placed so as to cover the tip of the bottle 4. However, since it has an opening 18, if the terminal 15 is pushed toward the partition wall 6, In this case, the bottle 4 protrudes from the opening 18. The elastic terminal 16 penetrates the partition wall and connects to the socket. extending along the inner wall of the The elastic terminal 17 extends parallel to the elastic terminal 16.

When the light bulb is screwed in, it suppresses the elastic terminals 16 and 17 together and partitions the elastic terminal 15. Push against the wall 6 and press the bottle 4 and support 3 against the fixed terminals 13,14. electric When the ball is removed, the opposite process occurs. In this way, the fruit of Figure 1 Accidental electric shock is avoided as in the case of the embodiment.

Next, FIG. 3 will be explained. The illustrated embodiment is similar to that of FIG. Although similar, the main difference is that the support is separated from the bulb receiving socket by a partition wall. The point is that they are not separated. Therefore, in Figure 3, unless it is inappropriate, The same reference numerals as in FIG. 1 are used.

In the embodiment of FIG. 3, housing 1 and character 0 Although it is manufactured integrally with the pipe 2, it is not a partition wall, but an annular flange 1 extending inwardly. 9 is established and implemented. The support body 3 is pushed in until it exceeds the flange 19. Can be pressure fitted into the housing. Contact elements 7, 9 of the two contacts and 8, 10 are completely supported by the support. When the light bulb is inserted, the bottle 4 is fixed. The support 3 is pushed in the same direction by the bulb as it is pushed towards the constant terminals 13 and 14. The normal operation of the terminals and the live flow side is substantially the same as in the embodiment of FIG.

In the embodiment of FIG. If there is a gap, either one of the contact elements 7, 8 or the support 3 is compressed by the force of the compression spring 5. Directly push against the opposite direction, thereby connecting contact element 9゜10 and fixed terminal 13.14 to electrical It would be possible to bring them into contact with each other. However, multiple tips are sharp. Make sure that your fingers do not get stuck in the gaps between the bottles and the wall of the socket. By making it narrower, such fear can be eliminated. For example, illustrated Instead of an axial bin extending through the support and an axial using a single member with three or four pin elements radially spaced apart from each other. could be used. In this configuration, the bulb element is inserted into the bin element. can also be rotated relative to the support.

Next, FIG. 4 will be explained. When inserting your finger, you cannot freely touch the support. However, as long as the bin extending along the wall of the socket is not pushed axially, the support An embodiment is shown in which movement of the is prevented. In this example, the bit This is not due to pain when touching the inserted finger, but because such contact is difficult. Because of this, I can't press the bottle with my finger.

The lamp holder in FIG. 4 supports fixed terminals 21 and 22 and has an inner flange 24. a one-piece housing receiving a support 23 which is force-fitted by pushing over it; 20. The support was moved towards the fixed terminal 21.22. It supports a spring contact 25 which is sometimes arranged to be electrically connected to a fixed terminal.

The supports are approximately circular when viewed from the socket, but are arranged in two opposite directions. It has protrusions 26,27. The protrusion is located on the inner flange in the position shown. 24 and the thickened portion 29 of the housing 20 . two Axially extending grooves (not shown) communicate with the annular grooves, with protrusions extending in their axial direction. When aligned with the groove, the support moves towards the fixed terminal 21.22 be able to.

A central portion 30 extending above the support between the spring contacts 25 and a peripheral slot 3 in the support. 2 and extending along slots (not shown) in the inner wall of the socket. 1 (only one shown) is provided. Each slot 32 is , has an angled edge surface 33 which engages a similarly angled edge of the respective bin. do. A spring 34 is carried in the center 3° of the latch.

When the bottle is in the position shown, i.e. before the bulb is inserted, the bottle is The support can rotate relative to the housing due to its engagement with the wall of the Since the flaw and the protrusion 26, 27 are in contact with the thick part 29 of the wall of the housing, The support cannot be moved axially. When the bulb is inserted, the end of the bulb will The latch engages the tip of the bottle 31 and pushes the bottle upward against the spring 34. bottle tilt The oblique portion slides along the corresponding inclined edge surface 33 of the support, so that the support rotates. do. This rotating protrusion 26,27 is aligned with the axial groove, so , when engaged with the bulb terminal or spring contact 25, the support 23 is connected to the fixed terminal 21.22. , and an electrical connection is established between the terminal and the contact.

That is, you can insert your finger and touch the support directly, but the support will move. Never. The tip of bottle 31 should be sufficiently engaged for an inserted finger to move the latch. It doesn't match. Accidental electric shocks are thus avoided.

Next, another embodiment of the present invention will be described with reference to FIGS. 5 to 18. This implementation The operating principle of the example is similar to the embodiment of FIG. 4, but some details of its construction They differ in some respects.

FIG. 5 shows the housing 35 of the lamp holder supporting the fixed spring strip terminal 36 and A support 37 supporting a spring strip contact 38 is schematically shown. When the light bulb is inserted, First, the support is rotated to move the spring strip contact 38 shown in FIG. After that, the support moves towards the spring strip terminal 36 and completely connects the terminal 38 and the contact 38. Make contact. It can be seen that the support supports two axially extending arms 39. It will cost you money. The latch member for rotating the support is not shown in FIG.

6 to 9 show the housing 35 of FIG. 5 in detail, and FIGS. are the plan view taken from line 6-6 in FIG. 5 and the plan view taken from line 7-7 in FIG. 5, respectively. Figures 8 and 9 are bottom views taken along lines 8-8 and 9-9 in Figure 6. FIG. The spring strip terminal 36 of FIG. 5 has an opening 40 (FIGS. 6 and 7). and the conductor is inserted radially from a position below the protrusion 41 on the axis of the housing. It is connected to the terminal in the force direction and drawn into the through hole 42.

The housing is a conventional insertion slot 43. Axial slots 4 located on both sides of the housing 4 and also define axial keyways 45 located on both sides of the housing. Howe The inside of the ring also defines recessed areas 4,6.

Figures 10 and 11 show the cap of the lamp holder. cap is cap an aperture that engages the projection 48 (FIG. 8) such that it is snap-fitted into the housing. It has 47. The keyway 49 cooperates with the groove 50 (FIG. 6) to Ensure correct orientation of the cap.

12 and 13 show the support 37 and its arm 39 shown in FIG. show. The support has two slots 51. with beveled edges 52, 53. each arm Two slots 54 immediately adjacent to the spring strip terminal 39 and receiving the seven spring strip terminal 38 (FIG. 5). It has two slots 55. A beveled edge 53 is provided on the protrusion 56 . hope for clarity Therefore, only one arm 39 and one protrusion 56 are shown in FIG. Ru. The arm 39 has elastic reeds and supports a hook 57 at its end. do.

Reference will now be made to FIGS. 14-16 showing various views of the latch. latch is a center supporting the bin 59 and the two ends or bins 60 defining the inclined surface 61. A section 58 is provided.

17 and 18 showing the spring strip contact 38 and fixed spring strip terminal 36 of the support. Explanation will be given regarding the figure.

The contacts on the support are located in slots 55 (Figure 12) when the bottle is attached to the support. a central portion 62 having an aperture located in the center of the groove, the slot ensuring that the aperture of the contact is engaged; It has a shape that looks like this. The contacts are therefore easily press-fitted. Fixed spring strip The single terminal 36 has a first terminal having a circular cross section larger than the diameter of the insulated conductor to be connected. 63 and a second portion 64 in the form of a slot narrower than the diameter of the conductor. It is equipped with an opening. The head of the terminal supports a flange 65.

During use, the terminal is inserted until the circular opening 63 is aligned with the through hole 42 (FIG. 8). and is pushed into the slot 40 (FIG. 6). Next, the coated conductor has a through-hole at its end. 42 and is pushed through the terminal. Next, the flange 65 shown in FIGS. The terminal is fully pushed in so that it engages the slot 66 shown in outline in FIG. . This final movement of the terminal secures the terminal in place while simultaneously It is pushed into the slot 64 of the terminal, and the edge of the slot cuts through the insulation of the conductor. like this There is no need to strip the conductor's insulation beforehand.

To assemble the lamp holder as shown, the spring strip terminals 36 are assembled as described above. The spring strip contact 3°8 is partially pushed into the housing and the spring strip contact 3°8 is completely inserted into the support. Pushed in. The latch pin 60 is recessed in the slot 61 of the support, and the latch pin 5 A compression spring is arranged above 9. This subassembly is then attached to the hook of the support 57 is pushed into the housing until it snaps into the recessed area 46 of the housing; At this time, the latch is engaged with the groove 44. The cable is then threaded through the cap and It is secured to the terminal and the cap is fitted into the housing. So the lamp holder Complete.

If you try to push the support toward the terminal with your finger, the support will come into contact with the keyway 45. And that movement is blocked. When the bulb is inserted, the lunch jar is engaged and the rack is closed. The tip moves in the axial direction. Cooperative inclined surfaces 52, 53 and 61 of latch and support The support is then rotated until the keyway 45 is aligned with the slot 54, and the The support is then pushed into the housing until the terminals 36 engage the contacts 38. .

7 in the embodiments of FIGS. 4 and 5 to 18. In this case, the support is first rotated and then axially moved, but the axial movement of the support No motion is required; only rotational motion is generated in cooperation with the latching mechanism that moves in the axial direction. It would also be possible to configure it so that

It will be appreciated that the lamp holder can incorporate a switch device if required. cormorant. Additionally, the embodiments of Figures 3 to 18 can be easily adapted to accept screw-on light bulbs. It will be understood that adaptations may also be made.

The lamp holder has the structure shown in FIGS. 5 to 18, but is adapted to a screw type light bulb. If the bin extends along the wall of the lampholder, it will protrude above the lampholder screw. It can be embedded in the groove so that it does not come out. Therefore, only the bulb that engages the screw is visible. can be engaged with the tip of the cylinder.

The embodiments of FIGS. 5-18 have telescoping caps. however, As an alternative, the head of the lamp holder housing can be connected to a tube for passing the power cable. It can be extended as specified. The hole communicates with the tube, and the cap of the lamp holder A screw extending along and engaging a thread in the hole engages the hole. vinegar That is, the screw secures the cap in place and, when tightened, secures the cable. Grips inside the tube to prevent accidental removal of the cable.

In addition, an adapter that allows the above-mentioned lamp holder safety mechanism to be fixed to a conventional lamp holder is also available. It will be understood that the data may also be provided on the computer. This kind of adapter is provided by the purchaser Useful when you do not want to remove the existing lamp holder and wires and install a new one. You will find that it is. If the plug-in installation is a component adapter, the adapter is The spring-loaded contacts of the lamp holder lock with those contacts to engage the appropriate recesses. It would be possible to have such a structure. That way, the adapter will It is thought that it is impossible for this to occur. However, if you wish, you can The plug-in pin of the adapter is removably formed so that the adapter can be removed after use. It would also be possible to do so.

Operated by a sharpened center bin and a bar extending along the wall of the socket Can be combined with a latch. The latch and rotatable support are shown in Figures 5 to 5. The latch and support cooperate as in the embodiment of Figure 18, but the center pin is depressed. are locked together until. This means, for example, that the sillatch and center the square section that engages the corresponding square opening in the support. This can be achieved by providing the Center pin combined like this and the latch configuration requires pushing both the center pin and latch pin to move the support. It must be very safe.

In the latch and support mechanism described above, the rotation of the supports is caused by the latches sliding relative to each other. This is accomplished by cooperating the surface of the support with the switch. Plug-in light bulb installation is a part In the case of It can be rotated or rotated. The light bulb insert bottle will open when the light bulb is inserted. engages the slotted member when

h・@(Rico Yo) No change) FIG. 2 FIG 4 Procedural amendment (formality) & /7 Date of attendance in 1981 Mr. Kazuo Wakasugi, Commissioner of the Patent Office l Incident display PCT/GB 83100192 2 Name of the invention lamp holder 3 Person making the amendment Relationship to the incident: Patent applicant Name: Dougherty, Patrifuku John 4 agent Address: 8-10-5 Toranomon-chome, Minato-ku, Tokyo 105 Date of amendment order 6 Target of correction (1) “Country designation” column in the translation of the application (2) Translation of the drawings 7 Contents of amendment fl) As per attached sheet (2) Engraving of the translation of the drawing (no change in content) 8 List of attached documents (1 translation of the application with 11 amendments) (2) Translation of the printed drawing: 1 copy Internationally styled apricot beef ANNEX To THA rNTERNATIONAL 5EARCHREP ORT Oh page 1 continuation

Claims (1)

[Claims] 1. Specifies a socket in which the light bulb is inserted axially into the socket during use. a housing, a rigid body supported by the housing and to which the power cable is connected in use; fixed cable terminals, exposed and accessible inside the socket and connected to the inserted light bulb. electrically connected contacts, at least a portion of each contact mounted within the housing; a support for supporting a light bulb, the support being such that as a result of a light bulb being inserted, the contact point is connected to the end of the light bulb; a first position where the contact is electrically connected to the terminal; and a second position where the contact is electrically connected to the terminal. and when the light bulb is inserted, the support is movable between the first and second supports. and means for biasing the support into position when the bulb is inserted into the housing. or when removed from the housing, it abuts the inserted bulb and together with the bulb. engages at least one bin that moves axially relative to the housing; , the inserted finger normally applies sufficient force to the bottle to move it axially. and the support is arranged such that it cannot be attached to at least one bottle. As long as sufficient force is not applied to move the second Ramp boulder 0 is placed so that it does not move to the position of 2. The bottle must be placed horizontally so that it cannot be pushed axially by unprotected fingers. The lamp holder according to claim 1, having a cross-sectional tip. 3. Claim No. 3 comprising a single bin disposed along the axis of the lamp holder. The lamp holder described in item 2. 4. The lamp according to claim 1, wherein the bin is arranged adjacent to the wall of the socket. holder. 5. The support is separated from the shisokerato by a partition wall forming an element of the housing. , the contact point and the pin pass through the partition wall. The lamp holder described in item 4. 6. Each contact has a first element supported by the partition wall and a first element supported by the support. a second element, the compression spring electrically connecting the first element and the second element. The lamp holder according to claim 5, which is connected to the lamp holder. 7. A return spring disposed between the housing and the support, the bottle being By moving axially toward the constant terminal, the return spring causes the support to be compressed. Claim 6, wherein the fixed terminal is compressed so as to be moved toward the fixed terminal by a spring. The lamp boulder on it. 8. The support body can be directly contacted inside the socket, and each contact is connected to the support body. Claims 1, 12, 3, or 4 fully supported by lamp holder. 9. Each contact is claimed to have an elastic structure to ensure good electrical connection. The lamp holder according to item 8. 10. In order for the support to move between the first position and the second position, the support must rotate relative to the housing, and the bin must rotate relative to the housing and the support. The support and the bottle are movable axially relative to the body, and the support and the bottle are The support rotates, but the support is rotated without relative axial movement of the bin. In any one of claims 1 to 9, which has an aspect of cooperation that is unlikely to occur, Lamp holder as described. 11. In order for the support to move from the first position to the second position, the support must first be moved from the first position to the second position. rotates relative to the housing, and secondly the support rotates axially relative to the housing. The axial movement of the support prior to the rotation will cause the support and 11. The lamp holder according to claim 10, wherein the lamp holder is prevented by a cooperating surface of the housing. 12, comprising two light bulb engaging bins supported by a latch member, the latch member; is engaged with an axial shaft inside the housing to prevent rotation relative to the housing. 12. The lamp holder according to claim 10 or 11. 13, the support supports two arms whose ends define hook members, and the support supports two arms whose ends define hook members; the support member is received in a recess defined by the housing to retain the support unit. The lamp holder according to claim 10, 11, or 12. 14. Each fixed terminal consists of a spring strip inserted through an opening in the housing. , claim 1. The lamp holder according to item 2, 3, 4, 5, 8, or 9. 15. Each terminal has a circular opening communicating with the slot, and the housing has an insulated conductor wire. is inserted through the opening, and then the conductor is pushed into the slot when the terminal is pressed down. the conductor, thereby cutting the insulator to establish an electrical connection with the conductor. 15. The lamp holder according to claim 14, which defines a through hole in which the lamp holder is arranged. 168 The biasing means is arranged along the axis of the lamp holder and has one end attached to the lamp holder. The other end is directly or indirectly supported on the support body. The lamp holder according to any one of items 1 to 15.