JP2008143664A - Lighting device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device for an elevator, capable of easily and certainly exchanging a fluorescence lamp, and preventing the breakage of the fluorescence lamp even by vibrations or the like of the elevator. <P>SOLUTION: The lighting device for the elevator is provided in an elevator car, equipped with the fluorescence lamp 7 and an ignition circuit 3, and has a reflecting plate 2 detachably fixing a transparent plate 9 at an opposite position. An elastic ring 11 is attached to a glass tube 8 of the fluorescence lamp 7, and the elastic ring 11 engages a locking portion with a locking hole of the reflecting plate 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator lighting device provided in an elevator for illuminating an elevator cab.

  Usually, an elevator is provided with an illumination device for an elevator inside the cab in order to illuminate the cab with appropriate illuminance.

  For example, FIG. 10 shows the configuration of the elevator cab 1 and FIG. 11 shows a plan view of the ceiling of the cab viewed from below. As shown in FIG. A side plate portion 43 that surrounds the four sides above the portion 42 and a ceiling portion 44 installed at the upper end portion of the side plate portion 43 are provided.

  An illumination box 45 constituting an elevator lighting device is attached to the lower surface of the ceiling portion 44. The illumination box 45 has a large opening 46 on the lower surface, and the opening 46 is formed of a light-transmitting synthetic resin, for example. An illuminated plate 47 is provided.

  A plurality of straight tube fluorescent lamps 50 are attached to the lower surface of the ceiling portion 44 as light sources for illuminating the illumination plate 47 so as to be equally arranged in two rows through sockets 51. The fluorescent lamp 50 irradiates the illumination plate 47, the light diffuses into the car room 41, and the interior of the car room 41 is illuminated.

  An entrance / exit 55 is formed in front of the car room 41, and doors 56 a and 56 b for opening / closing the entrance / exit 55 are provided at the entrance / exit 55. A curtain plate 57 is provided on the upper side of the entrance / exit 55, and a baseboard 58 is provided on the lower side of the side plate portion 43.

  In an elevator lighting apparatus, four to ten lamps for general lighting are arranged on the ceiling surface in one unit. The lifetime of this fluorescent lamp is about 6000 hours. The structure is short and uses a filament electrode. Therefore, it is assumed that the lamp becomes dark during the inspection of the elevator due to vibration or impact, or the filament suddenly breaks and becomes unlit. Therefore, even if there is no phenomenon that can predict the life of the lamp, such as flickering, replace the lamp and reduce the probability of lighting (non-lighting) occurring until the next periodic inspection as much as possible. I was making an effort.

  It should be noted that during the maintenance work of the lighting device, the entire elevator must be stopped, and the elevator user cannot use it during that time, which is very inconvenient.

For this reason, cold cathode fluorescent lamps (CCFLs) that can obtain a uniform illuminance distribution and can reduce maintenance costs by reducing the number of lamp replacements have come to be used. (For example, see Patent Document 1)
Further, as shown in the perspective view of FIG. 12, the elevator lighting device is structurally structured such that a reflecting plate 62 is screwed to a top plate 61, and a lighting circuit 63 and a fluorescent lamp 64 are attached to the reflecting plate 62. Yes. When the glass tube 65 of the fluorescent lamp 64 is fixed to the U-shaped or U-shaped lamp to the reflection plate 62, the electrode side 66 is supported by the rubber holder 67 to support the fluorescent lamp 64, and the glass tube 65 has a plurality of fixed types. The hook 68 is supported. The transmission plate 69 is detachably attached to the reflection plate 62.
Japanese Patent Laid-Open No. 2004-203611

  As described above, when the lamp of the elevator illumination device reaches the end of its life, the elevator maintenance staff needs to replace the fluorescent lamp or the entire illumination device.

  When a cold cathode fluorescent lamp is used as the light source, the cold cathode fluorescent lamp is integrated with the illuminating device with a connector or the like by fixing an electrode portion with solder or using a harness. For this reason, it has been difficult to replace the lamp alone. Therefore, in order to easily replace the lamp, a cold cathode fluorescent lamp having a structure in which electrode terminal portions at both ends, such as a fluorescent lamp for general illumination, are directly fitted into a socket from a fluorescent lamp having a harness-connected structure. The form is used.

  However, the cold cathode fluorescent lamp used in the lighting device is the same type as the cold cathode fluorescent lamp adopted as a backlight light source for liquid crystal TVs and personal computer monitors, even if the electrode terminal portion is directly fitted into the socket. Although the outer diameter of the glass tube is a thin tube of around φ3 to φ4, the length is very long, for example, 500 mm to 1000 mm. Therefore, the lamp is bent due to its own weight. Therefore, it is very difficult to mount the lamps at both ends simultaneously when replacing or installing the lamps.

  That is, if it is a fluorescent lamp for general illumination, the tube diameter of a glass tube is a thick tube of about φ10 mm to φ30 mm. Therefore, even if the tube length is longer than 1000 mm, the lamp will not be bent by its own weight even if one of the ends is inserted into the socket and inserted into the socket. Therefore, it was relatively easy to replace the lamp (without worrying about breakage of the lamp). However, when a cold cathode fluorescent lamp with a thin glass tube is used as a light source, bending is likely to occur, so that a structure of an illuminating device in consideration of prevention of cracking during lamp replacement work is required.

  In addition, when installing or replacing the elevator lighting unit in the elevator car, maintenance personnel work on the ceiling of the elevator cab. Other work performed by maintenance personnel on the ceiling of the elevator cab is, for example, cleaning the outer wall windows during safety inspection work of hanging wires or in glass window elevators where the passengers of the elevator can see the outside scenery. And so on.

  That is, as shown in FIG. 13A, before the maintenance person gets on the ceiling 70, the ceiling 70 is not subjected to weighting by the maintenance person, so that the ceiling 70 is not bent. Therefore, the elevator lighting device 71 attached to the ceiling 70 is not bent.

  On the other hand, as shown in FIG. 13B, when a maintenance worker performs work on the ceiling 70 of the elevator cab, the load of the maintenance worker is applied to the ceiling 70 of the cab. Due to the load applied to the ceiling 70, the load is also applied to the elevator lighting device 71 attached to the ceiling 70. As a result, the reflector 2 constituting the elevator lighting device 71 is bent. At this time, if the fluorescent lamp 64 is fixed to the reflecting plate 2 by a fixed hook 68 or the like, the generated bending cannot be released, the fluorescent lamp 64 is bent, and the fluorescent lamp 64 is broken. There was a possibility of damage.

  In addition, the longer the lamp is, the more the elevator moves up and down, especially during acceleration and deceleration before stopping, which is affected by gravity and inertial forces, causing the center of the lamp to vibrate up and down, There is a case where the case collides with the case, and there is a possibility that the lamp breaks due to the collision.

  The present invention was made based on these circumstances, and provides an illumination device for an elevator that can easily and reliably replace a fluorescent lamp and that the fluorescent lamp is not damaged by the vibration of the elevator or the like. The purpose is to do.

The first feature according to the embodiment of the lighting device for an elevator of the present invention is a reflection that is attached to an elevator cab, is equipped with a fluorescent lamp and a lighting circuit, and a transmission plate is detachably fixed at a facing position. An elevator lighting device having a plate,
An elastic ring is attached to the glass tube of the fluorescent lamp, and the elastic ring has a locking portion engaged with a locking hole of the reflecting plate.

  In addition, according to a second feature of the embodiment of the lighting device for an elevator of the present invention, electrode terminals are formed on both outer surfaces in the tube axis direction of the glass tube of the fluorescent lamp, and the electrode terminals are connected to the lamp holder. The fluorescent lamp is fixed to the elevator cab by being conducted and held by a metal socket.

  According to a third aspect of the elevator illuminating device of the present invention, the elastic ring is sandwiched between the reflecting plate and the transmitting plate while the glass tube of the fluorescent lamp is mounted. It is elastically deformed.

  According to a fourth aspect of the elevator illuminating device of the present invention, the elastic ring has the light transmitting plate separated from the reflecting plate in a state where the glass tube of the fluorescent lamp is mounted. In this case, the fluorescent lamp is held in a suspended state on the reflecting plate by the locking portion.

  Moreover, the 5th characteristic which concerns on embodiment of the illuminating device for elevators of this invention is that the said elastic ring is formed so that the length of a support part is longer than the plate | board thickness of the said reflecting plate.

  ADVANTAGE OF THE INVENTION According to this invention, the lamp | ramp illumination apparatus which can replace | exchange lamp | ramp easily and reliably, and a lamp | ramp does not break | damage by the vibration of an elevator, etc. can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Note that the configuration of the elevator cab to which the elevator lighting device is attached is the same as that described in the section of the background art, and thus the description thereof is omitted.

  FIG. 1 is a partially exploded perspective view of an elevator lighting device, and FIG. 2 is a partial cross-sectional side view of the elevator lighting device. In the elevator lighting device, a plastic reflector 2 is fixed to a top plate 1 of an elevator cab by screws or the like.

  On the lower surface side (the side opposite to the top plate 1) of the reflector 2, a cold cathode fluorescent lamp in which the electrode terminal portion 6 is elastically sandwiched between the lighting circuit 3 and the metal socket 5 a of the lamp holder 5 provided on the metal plate 4. 7 is disposed.

  The cold cathode fluorescent lamp 7 is a thin tube with an outer diameter of the glass tube 8 of about φ3 to φ4 and a very long thin tube with a length of, for example, 500 mm to 1000 mm. The cold cathode fluorescent lamp 7 includes a pair of cold cathodes sealed at both ends of a glass tube 8 serving as a discharge vessel, a phosphor applied to the inner surface of the glass tube 8, and an inside of the glass tube 8. In addition, since the cathode emits light without being heated, the lifetime is not affected by the number of times of turning on / off. Therefore, the lifetime is determined depending on the light emission time. The cold cathode fluorescent lamp 7 is also characterized in that it is turned on immediately when a voltage is applied and there is no time delay until light emission.

  Accordingly, if the cold cathode fluorescent lamp 7 is used as a light source, the tube diameter of the cold cathode fluorescent lamp 7 can be reduced, so that the thickness of the lighting device can be reduced. Thereby, the height space in the car room can be increased and the space in the car room can be used effectively.

  Furthermore, the cold cathode fluorescent lamp 7 usually has a much longer life than the hot cathode fluorescent lamp 7 for general illumination, so that the replacement period can be greatly extended and maintenance is facilitated. Further, the cold cathode fluorescent lamp 7 (hereinafter simply referred to as the fluorescent lamp 7) does not have an irregular blinking operation at the time of lighting unlike the hot cathode fluorescent lamp 7 for general illumination, and can be turned on immediately. The interior of the cab can be illuminated with a predetermined brightness from the moment of lighting.

  Further, the shape of the metal socket 5a for elastically holding the electrode terminal portion 6 of the fluorescent lamp 7 may be formed in a fan shape, an R shape, a triangle, a quadrangle, a polygon, or the like in addition to a circle.

  The lighting circuit 3 and the fluorescent lamp 7 provided in the reflecting plate 2 are detachably attached to the reflecting plate 2 so as to face the reflecting plate 2, so that the lighting circuit 3 and the fluorescent lamp 7 are provided therein. Is built in to form an elevator lighting device.

  As shown in the explanatory view of FIG. 3A, the lamp holder 5 is attached and detached in the horizontal direction as shown in the explanatory view of FIG. There is a method. In the case of a straight tube, the fluorescent lamp 7 is supported by being in electrical contact with the metal socket 5a of the lamp holder 5 so that the electrodes at both ends are electrically connected.

  As shown in FIGS. 1 and 2, the middle of the glass tube 8 of the fluorescent lamp 7 is held by an elastic ring 11. According to the length of the glass tube 8, the elastic ring 11 is arrange | positioned at least 1 or more predetermined number.

  As shown in the side view of FIG. 4A, the elastic ring 11 is formed of an elastic material made of a molding resin such as plastic resin or silicon rubber. In terms of shape, a lamp holding portion 14 having a hook-like shape on the side surface, a locking portion 12 to the reflecting plate 2 at the top, and a ring-shaped lamp insertion hole 13 at the bottom is formed. The holding unit 14 is connected to and integrated with the support unit 15. In addition, since the cross section of the support part 15 is smaller than the lamp insertion hole 13, it engages so that the inside of the lamp insertion hole 13 may be freely inserted.

  The length a of the support portion 15 is set so that the length a of the support portion 15 is larger than the plate thickness b of the reflection plate 2 in a relation of a> b as compared with the plate thickness b of the reflection plate 2. Has been.

  That is, the elastic ring 11 has the glass tube 8 of the fluorescent lamp 7 inserted into the lamp insertion hole 13 of the lamp holding portion 14, and the locking portion 12 is inserted into the locking hole 16 formed in the reflecting plate 2. Stop. The locking portion 12 is formed such that the top portion 12 a is narrower than the width of the locking hole 16, while the bottom portion 12 b is formed wider than the width of the locking hole 16. Therefore, as shown in the side view of FIG. 4B, when the locking portion 12 is inserted into the locking hole 16, the locking portion 12 is gradually elastically deformed according to the depth of entry, and the bottom portion 12b. When it passes through the locking hole 16, the shape is restored by elasticity, and the bottom 12 b of the locking part 12 is locked to the locking hole 16.

  Further, the relationship between the length a of the support portion 15 of the elastic ring 11 and the plate thickness b of the reflector 2 is set to a> b. That is, in a state where the electrode terminal portion 6 of the fluorescent lamp 7 is held by the lamp holder 5, the support portion 15 is separated from the lower surface of the thickness of the reflecting plate 2. On the other hand, the lower end of the lamp holding portion 14 is pressed against the light transmitting plate and is elastically deformed in close contact with the light transmitting plate, and the upper end is elastically deformed in close contact with the reflecting plate 2, and the fluorescent lamp 7 is inserted into the lamp insertion hole 13. The inserted state is fixed.

  As shown in FIG. 5, the elastic ring 11 may have a shape in which an extending portion 14 a is provided on the lower end side (the side opposite to the support portion 15) of the lamp holding portion 14. In that case, a further buffering effect against vibration or the like can be obtained by elastic deformation of the extending portion 14a. Further, the support portion 15 may be provided with a constricted portion 15a in the center instead of the straight shape in order to make the movement smooth.

  Further, as shown in FIG. 6, when one elastic ring 11 is used, the size of the cross section of the locking portion 12 of the elastic ring 11 is made substantially the same as that of the locking hole 16 of the reflector 2. May be. In that case, with the glass tube 8 of the fluorescent lamp 7 mounted in the lamp insertion hole 13 of the elastic ring 11, the locking portion 12 is inserted into the locking hole 16 and rotated 90 degrees to engage the locking portion 12. Fix so that the stop holes 16 intersect. Accordingly, after the rotation, the locking portion 12 is prevented from coming off the locking hole 16 unless the locking portion 12 is rotated so as to be in the same position as the locking hole 16.

  In this case, one or more fluorescent lamps 7 can be fixed by one elastic ring 11.

  By the holding structure of each fluorescent lamp 7 described above, the fluorescent lamp 7 can be protected by the elasticity of the elastic ring 11 from the vertical vibration received from the elevator. In addition, since the fluorescent lamp 7 is always kept horizontal, it is possible to prevent the unevenness of mercury in the fluorescent lamp 7 and extend the life of the fluorescent lamp 7.

  Next, a description will be given of when the fluorescent lamp 7 is mounted / replaced.

  As shown in the side view of FIG. 7A, in the fluorescent lamp 7 to be mounted on the elevator lighting device, a predetermined position of the glass tube 8 is inserted into the lamp insertion hole 13 of the elastic ring 11 in advance. In this state, each locking portion 12 of the elastic ring 11 is inserted into the corresponding locking hole 16 of the reflecting plate 2 and locked. Thereby, the glass tube 8 is held by the reflecting plate 2 by the elastic ring 11.

  In this state, the electrode terminal portion 6 of one fluorescent lamp 7 is attached to the lamp holder 5. At that time, since the glass tube 8 is held by the elastic ring 11 at a plurality of locations on the way, it is not damaged. Further, the electrode terminal portion 6 of the other fluorescent lamp 7 is attached to the lamp holder 5. As a result, as shown in the side view of FIG. 7B, the fluorescent lamp 7 has the two electrode terminal portions 6 mounted on the lamp holder 5 and the transmission plate 9 mounted on the reflection plate 2, thereby illuminating the elevator. A device is formed.

  In addition, about the removal of the fluorescent lamp 7, it can carry out by the reverse procedure of the attachment of the fluorescent lamp 7 mentioned above.

  That is, when the maintenance staff replaces the fluorescent lamp 7, even if the translucent plate 9 is removed, the fluorescent lamp 7 is held in a suspended state by the elastic ring 11, so that the replacement becomes easy. Further, when the elastic ring 11 is not provided, there is a risk that the fluorescent lamp 7 may fall if the fluorescent lamp 7 is not completely fixed to the lamp holder 5 and the maintenance worker releases his / her hand without noticing. However, in this embodiment, the elastic ring 11 keeps the fluorescent lamp 7 suspended in this case, so there is no danger of the fluorescent lamp 7 falling. Moreover, even if the electrode terminal portion 5a of the fluorescent lamp 7 is not completely fixed to the metal socket 5a of the lamp holder 5, the fluorescent lamp 7 is pushed by the elastic ring 11 when the transmission plate 9 is attached. Thus, the electrode terminal portion 5 a of the fluorescent lamp 7 is completely fixed to the metal socket 5 a of the lamp holder 5.

  Next, the influence of the load by the maintenance staff when the maintenance staff works on the ceiling of the elevator cab will be described.

  In the background art section, as described with reference to FIG. 13B, when the maintenance worker performs work on the ceiling 70 of the elevator cab, a load due to the weight of the maintenance worker is applied to the ceiling 70 of the cab. Due to the load applied to the ceiling 70, the load is also applied to the reflector 2 of the elevator lighting unit attached to the ceiling 70, and the reflector 2 is bent.

  As shown in the side view of FIG. 8, the elevator lighting device according to the present embodiment is arranged such that when a maintenance worker performs an operation on the ceiling of the elevator cab, the maintenance staff is attached to the top plate 1 of the cab of the elevator cab. Even if a load due to body weight is applied, the glass tube 8 of the fluorescent lamp 7 is held by an elastic ring 11 at an intermediate position. Therefore, even if the reflector 2 is bent, the elastic ring 11 is elastically deformed by the amount of bending. Absorb. Thereby, since the fluorescent lamp 7 does not bend, it is not damaged.

  Next, as shown in FIG. 9, the arrangement of the elastic ring 11 in a bent tube having a U-shaped glass tube 8 will be described.

  For a bent tube such as a U-shaped glass tube 8, the elastic ring 11 is disposed at an asymmetrical position of the parallel glass tube 8. That is, one is attached at a distance A from the electrode terminal 6 and the other is attached at a distance B from the electrode terminal 6.

  When the reflecting plate 2 is bent by the arrangement of the attachment position of the elastic ring 11 and a load is generated in the two straight pipe portions of the U-shaped bent pipe, the action of the integrated structure of the bent pipe and the elasticity The effect | action by the difference in the mutual attachment position of the ring 11 synergizes, and the bending prevention effect | action to a bending pipe functions. That is, since the bent tube of the glass tube 8 has an integral structure such as a U-shape, each of the two straight tube portions of the bent tube has a pseudo-distance between the distance A from the electrode terminal portion 6 and the distance B. The action according to being held by the elastic ring 11 at two locations is obtained. That is, each of the two straight pipe portions is in a state of being pseudo-supported by the elastic ring 11 at two locations, and the bending can be reduced. As a result, the deflection of the fluorescent lamp 7 is reduced, and the fluorescent lamp 7 is not easily damaged.

  In the above-described embodiment, an internal electrode type cold cathode fluorescent lamp (CCFL) in which electrodes are sealed at both ends of a glass tube is used as the fluorescent lamp, but an internal electrode type cold cathode fluorescent lamp (CCFL) Instead of CCFL), a conductor layer (metal plate / film / solder plating) is provided as an electrode on the outer surface of both ends of the sealed glass tube, and a high frequency voltage is applied to the external electrode on the outer surface of the glass tube. A dielectric barrier discharge fluorescent lamp (EEFL) to be lit can also be used.

  In the case of a dielectric barrier discharge fluorescent lamp, the fluorescent lamp is fixed in the elevator cab by the external electrode being conducted and held by the metal socket of the lamp holder.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 is a partially exploded perspective view of an elevator lighting device showing an embodiment of the present invention. The partial cross section side view of the elevator illuminating device which shows embodiment of this invention. (A) And (b) is explanatory drawing of the system attached or detached with the lampholder of the illuminating device for elevators which shows embodiment of this invention. (A) And (b) is a side view which shows the latching state of the elastic ring of the illuminating device for elevators which shows embodiment of this invention. The modification of the elastic ring of the illuminating device for elevators which shows embodiment of this invention. Explanatory drawing of an example of latching of the elastic ring of the illuminating device for elevators which shows embodiment of this invention. (A) And (b) is explanatory drawing of attachment of the illuminating device for elevators which shows embodiment of this invention. Explanatory drawing of the external force to the illuminating device for elevators which shows embodiment of this invention. The modification of arrangement | positioning of the elastic ring of the illuminating device for elevators which shows embodiment of this invention. Explanatory drawing of the example of general arrangement | positioning with an elevator cab and an elevator illuminating device. Explanatory drawing of the general example of arrangement | positioning of the illuminating device for elevators in an elevator cab. The partially exploded perspective view of the conventional elevator illuminating device. (A) And (b) is a comparison figure when a load is added to the ceiling in the conventional lighting device for elevators.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Top plate, 2 ... Reflection plate, 3 ... Lighting circuit, 4 ... Metal plate, 5 ... Lamp holder, 5a ... Metal socket, 6 ... Electrode terminal part, 7 ... Fluorescent lamp, 8 ... Glass tube, 9 ... Transmission plate DESCRIPTION OF SYMBOLS 11 ... Elastic ring, 12 ... Locking part, 13 ... Lamp insertion hole, 14 ... Lamp holding part, 15 ... Supporting part, 16 ... Locking hole

Claims (5)

An elevator illuminating device that is mounted in an elevator cab, has a reflecting plate that is equipped with a fluorescent lamp and a lighting circuit, and that has a transmission plate detachably fixed at an opposing position,
An elevator lighting device, wherein an elastic ring is attached to a glass tube of the fluorescent lamp, and the elastic ring has a locking portion engaged with a locking hole of the reflector.   Electrode terminals are formed on the outer surfaces of both ends in the tube axis direction of the glass tube of the fluorescent lamp, and the fluorescent lamps are fixed to the elevator cab by conducting and holding the electrode terminals by a metal socket of the lamp holder. The elevator lighting device according to claim 1, wherein the lighting device is an elevator.   The elevator lighting device according to claim 1, wherein the elastic ring is elastically deformed by being sandwiched between the reflecting plate and the transmitting plate in a state where the glass tube of the fluorescent lamp is mounted.   The elastic ring holds the fluorescent lamp in a suspended state on the reflecting plate by the locking portion when the light transmitting plate is separated from the reflecting plate with the glass tube of the fluorescent lamp attached. The elevator illuminating device according to claim 1.   The elevator lighting device according to any one of claims 1 to 3, wherein the elastic ring is formed such that a length of the support portion is longer than a thickness of the reflection plate.

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