JP2010009984A - Fall prevention member and illuminating device equipped with the fall prevention member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fall prevention member capable of preventing a supported member from falling off to a floor by preventing locking with the held member from being released, and to provide an illumination device equipped with the fall prevention member. <P>SOLUTION: The fall prevention member 1 constituted to hold a supported member by a supporting member so as to prevent the fall of the supported member is provided with a coil spring 12 to absorb a shock generated when preventing the shock of the supported member. By arranging the coil spring 12 suitably according to the supported member, a shock generated when restricting the fall of the supported member can be absorbed as energy which is consumed accompanied by the elongation or deformation of the coil spring 12 and a force to a hook 11 can be made small. As a result, a locking part 11a and a pressing part 11c of the hook 11 are prevented from being detached and the lock between the supported member and the hook 11 can be prevented from being released, and falling to a floor of the supported member can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fall prevention member configured to be able to hold the held member on the holding member in order to prevent the held member from falling and colliding with the floor surface or the like, and the fall preventing member It is related with an illuminating device provided with.

  An illumination device such as a downlight mounted in a mounting hole opened in the ceiling is fixed to the mounting hole by a mounting body such as a leaf spring. The lighting device installed and used in such a high place may fall from the ceiling due to the fact that the mounting body cannot hold the lighting device at the time of a disaster such as an earthquake, or due to breakage of the ceiling. For this reason, such an illuminating device is generally provided with a fall prevention member in order to prevent the illuminating device from falling to the floor surface (see, for example, Patent Document 1).

The illuminating device disclosed in Patent Document 1 is a so-called floodlight that includes an appliance main body (illuminating device main body) in which a fluorescent lamp as a light source is housed, and is used to illuminate a wide range in a theater or a studio. A fall prevention member having a hook (hanging body) and a wire having one end connected to the hook is attached to an arm provided on the fixture body of the lighting device. In the lighting device, one side of the fall prevention member is attached to the instrument body, and the other side is attached to the holding member, and the instrument body is held by the holding member with a wire.
JP 2007-103239 A

  By the way, when the lighting device main body, which is a member to be held, starts to fall and is suspended by the fall prevention member so as not to collide with the floor surface, a large force is applied to the fall prevention member. In the lighting device disclosed in Patent Document 1, since this large force acts on the hook as it is, the mouth of the hook may open, and the lighting device main body may fall to the floor surface and collide. It was.

  The present invention has been made in view of such circumstances, and prevents the retaining member and the held member from being released from being latched to prevent the retained member from falling to the floor surface. An object of the present invention is to provide a fall-preventing member that can be used and a lighting device including the fall-preventing member.

  The fall prevention member according to the present invention is the fall prevention member for holding the held member on the holding member so as to prevent the held member such as a lighting device from falling and colliding with the floor surface or the like. It is characterized by comprising an impact absorbing means for absorbing the impact on the fall preventing member that occurs when preventing the collision of the members.

  In the present invention, the impact-absorbing means absorbs the impact on the fall-preventing member that occurs when the fall is restricted so that the retained member does not collide with the floor surface or the like. The force applied to the hooking portion can be reduced. As a result, the holding member can be held on the holding member by preventing the locking of the fall prevention member and the held member, and the holding member can be prevented from falling to the floor surface. Can do.

  The fall prevention member according to the present invention includes a latching body for latching the held member, and the impact absorbing means absorbs an impact generated when the collision of the held member is prevented, thereby The stopper is prevented from being deformed and the latching of the held member is prevented from being released.

  In the present invention, the impact-absorbing means absorbs the impact on the fall-preventing member that occurs when the fall is restricted so that the held member does not collide with the floor surface or the like. The force applied to the holding member can be reduced, the deformation of the latching body can be prevented, and the latching with the held member can be prevented from being released. As a result, the held member can be held by the holding member, and the held member can be prevented from falling to the floor surface.

  The fall prevention member according to the present invention comprises a latching body for latching the held member, and a wire connected to the holding member on one side so as to suspend the held member on the holding member, The shock absorbing means is provided on the other side or in the middle of the wire.

  In the present invention, since the impact generated when the fall of the held member is restricted is absorbed by the impact absorbing means, the force applied to the latching body of the fall prevention member can be reduced, and the latching It is possible to prevent the latching between the body and the held member from being released and prevent the held member from falling to the floor surface. Since the shock absorbing means is provided on the other side or in the middle of the wire connected to the holding member on one side, the shock absorbing means becomes an obstacle when attaching the fall prevention member to the holding member such as a beam behind the ceiling. It is easy to install. Moreover, the mode of action (deformation or breakage) of the impact absorbing means can be easily confirmed from the indoor side.

  The fall prevention member according to the present invention is characterized in that the impact absorbing means is a coil spring.

  In the present invention, the impact generated when the fall of the held member is restricted is absorbed as energy consumed in association with expansion and contraction or irreversible deformation of the coil spring. It is possible to absorb an impact generated when the fall of the held member is restricted by the impact absorbing means.

  The fall preventing member according to the present invention is characterized in that the impact absorbing means is a plate-like spring in which a plurality of slits are arranged in parallel in a direction crossing the extending direction.

  In the present invention, the impact generated when the fall of the member to be held is restricted is consumed as the plate-like springs in which a plurality of slits are arranged in parallel in the extending direction extend or deform. Therefore, the impact generated when the fall of the held member is restricted can be absorbed by the impact absorbing means having a simple configuration of only the plate-like spring. In addition, by appropriately providing a plurality of slits in the direction intersecting with the extension direction provided in the spring, the degree of impact absorption such as the fall distance and amplitude of the held member is appropriately set according to the installation location of the held member. It becomes possible to set.

  The fall prevention member according to the present invention is characterized in that the impact absorbing means is a bent wire.

  In the present invention, the impact generated when the fall of the held member is restricted is absorbed as energy consumed in association with the expansion or contraction or irreversible deformation of the bent portion of the wire. It is possible to absorb the impact generated when the fall of the held member is restricted by the impact absorbing means.

  The fall prevention member according to the present invention is characterized in that the shock absorbing means is formed by connecting a plurality of shock absorbers in series or in parallel.

  In the present invention, since a plurality of shock absorbers are connected in series or in parallel to constitute the shock absorbing means, by appropriately setting the shock absorber, depending on the installation location of the held member It is possible to appropriately set the degree of impact absorption such as the fall distance and amplitude of the held member, or to function even if one is broken.

  The illuminating device according to the present invention is the illuminating device configured to be able to hold the illuminating device main body on the holding member by the fall preventing member in order to prevent the illuminating device main body having the light source from falling. The prevention member is the fall prevention member described in the above-described invention.

  In the present invention, since the fall prevention member described in the above-mentioned invention is provided, the impact generated when the fall of the lighting device is restricted can be absorbed by the impact absorbing means, and the hanging body and the illumination It is possible to prevent the latching with the apparatus main body from being released and hold the lighting device on the holding member, and it is possible to prevent the lighting device from falling to the floor surface.

  According to the present invention, a member to be held such as a lighting device is absorbed by the shock absorbing means of the fall prevention member by absorbing an impact generated when the member to be held falls and collides with the floor surface. Can be prevented from falling down.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
FIG. 1 is a schematic plan view of a fall prevention member according to Embodiment 1 of the present invention. The fall prevention member 1 is used to prevent the apparatus from falling by holding a device (member to be held) installed and used at a high place such as a ceiling on a holding member such as a beam behind the ceiling.

  The fall prevention member 1 includes a hook 11 that is a latching body that latches the held member. The hook 11 is made of a metal such as stainless steel, and is formed by bending an elongated rectangular plate. As shown in FIG. 1, the hook 11 has a hooking portion 11 a bent in a J shape. A connecting portion 11b bent in a C shape is continuously provided on one side of the latching portion 11a. A rectangular plate-shaped presser 11c is connected to the connecting part 11b, and the end of the presser 11c is in contact with the hook 11a from the inside.

  A coil spring 12 as an impact absorbing means is connected to the connecting portion 11b of the hook 11. FIG. 2 is an enlarged view of the coil spring as seen from the direction of arrows II-II in FIG. The coil spring 12 is made of a metal such as stainless steel, and has a spring portion 12a formed by spirally winding a metal wire, and annular coupling portions 12b and 12c provided on both sides of the spring portion 12a. is doing. The coil spring 12 is connected to the hook 11 by inserting the connecting portion 11b of the hook 11 through the connecting portion 12b. The connecting portions 12b and 12c are wound twice in order to increase the rigidity. Moreover, these metal members are heat-treated as necessary.

  The coil spring 12 is configured so that the amplitude of the coil spring 12 becomes about twice the natural length and the number of times of vibration is small (preferably about 2 or 3 times) when the held member falls from the installation location. It is desirable to set so that. The coil spring 12 may be set to be used within the range of elastic deformation or may be set to be plastically deformed.

  A metal wire 13 such as stainless steel is connected to the connecting portion 12 c of the coil spring 12. The wire 13 is inserted into the connecting portion 12c of the coil spring 12 at one end side, covered with a cylindrical sleeve 14a in an annular state, and the annular connecting portion 13a formed by crushing the sleeve 14a, The coil spring 12 is connected. The other end of the wire 13 is provided with an annular portion 13b formed by covering a cylindrical sleeve 14b in the same annular state and crushing the sleeve 14a. The length of the wire 13 is appropriately set according to the installation location of the member to be held and the positional relationship between the installation location and the holding member.

  For example, when the member to be held is about 1 kg and the distance between the place where the member is to be held and the holding member is about 600 mm, the fall prevention member 1 is set as follows. The length between the connecting portion 13a and the annular portion 13b of the wire 13 is set to about 600 mm, and the strength of the wire 13 is set to have a rigidity that hardly causes plastic deformation when the held member naturally falls by about 600 mm. The initial tension of the coil spring 12 is set to 1 kg or more.

The fall prevention member 1 configured as described above is configured such that the annular portion 13b side of the wire 13 is hooked on a holding member such as a beam on the ceiling, and the fall prevention member 1 is passed through the annular portion 13b of the wire 13 from the other side. Without being provided with a special fixing mechanism, it is easily and reliably fixed to the holding member as much as the tension is applied. And the fall prevention member 1 becomes possible to hold | maintain a to-be-held member in a holding member by latching a to-be-held member in the latching | locking part 11a of the hook 11 provided in the other side. In this state, when the held member falls from the installation place such as the ceiling, a force corresponding to the potential energy of the held member acts on the fall prevention member 1, and the coil spring 12 mainly extends by this acting force. The fall is limited by a distance (hereinafter referred to as distance x) determined according to the characteristics of the coil spring 12. This distance x can be obtained by (2 mgh / k) ^0.5 assuming that all the potential energy before the fall is converted into the deformation of the coil spring (where m: mass, g: gravitational acceleration, h: fall height) K is the spring constant). When the fall is restricted so that the held member does not collide with the floor surface, a large force acts on the fall prevention member 1, but by appropriately setting the coil spring 12 according to the held member, The impact generated when the holding member is restricted from falling can be absorbed as energy consumed by the expansion or contraction or irreversible deformation of the coil spring 12, and the force applied to the hook 11 can be reduced. As a result, it is possible to prevent the latching portion 11a and the holding portion 11c of the hook 11 from being separated and the latching between the held member and the hook 11 is released, and the held member is held by the holding member. Thus, the held member can be prevented from falling to the floor surface.

  Moreover, since the coil spring 12 is provided on the other side of the wire 13, when the fall prevention member 1 is attached to a holding member such as a beam on the back of the ceiling, the coil spring 12 does not get in the way and is easy to install. Moreover, it is easy to confirm the state (including deformation or breakage) of the coil spring 12 from the indoor side. In addition, since the coil spring 12 is used as an impact absorbing means, it is possible to absorb an impact generated when the fall of the held member is limited with a simple configuration of only the coil spring 12.

  This fall prevention member 1 is used, for example, to prevent a lighting device such as a downlight mounted in a mounting hole opened in the ceiling from falling to the floor surface. Hereinafter, a downlight that is provided on the ceiling and locally illuminates a room will be described as an example of the lighting device. FIG. 3 is an external perspective view of the lighting device 10 including the fall prevention member 1 according to the first embodiment. FIG. 4 is a schematic side view of the lighting device 10, and a part thereof is shown in a partial cross section.

  In the figure, reference numeral 10a denotes a lighting device body. The illuminating device body 10a includes a radiator 2 made of metal such as aluminum. As shown in FIG. 4, the radiator 2 includes a substantially disk-shaped heat transfer plate 21, and a plurality of rectangular plate-shaped heat dissipation plates 22, 22... Are parallel to one surface 21 a of the heat transfer plate. And a connecting plate (not shown) is erected so as to pass through substantially the center of the plurality of heat radiation plates 22, 22... And to be orthogonal to the plurality of heat radiation plates 22, 22. is there.

  A plurality of screw holes 21d, 21d,... Are provided on the peripheral edge of the heat transfer plate 21. Further, at the peripheral edge of the heat transfer plate 21 of the radiator 2, the rectangular plate-like mounting portions 23, 23... It is set up. The mounting portions 23, 23... Are integrally connected to the plurality of heat sinks 22, 22,..., And one mounting portion 23 is connected to the heat sinks 22, 22. It is arranged so that. The outer surfaces 23a, 23a ... of the attachment portions 23, 23 ... are formed in a flat surface, and the attachment portion 23 is provided with screw holes 23b, 23c arranged vertically. The radiator 2 may be integrally formed by die casting or may be formed by cutting. Moreover, you may form combining the several member by an extrusion process.

  On the other surface 21b of the heat transfer plate 21 of the radiator 2, a plurality (six in the figure) of LED modules 3, 3,... As light sources are attached at equal intervals in the circumferential direction. The LED modules 3, 3... Have a rectangular ceramic (for example, aluminum oxide) substrate, a plurality of (for example, 36) LED elements densely mounted on the central portion of one surface of the ceramic substrate, and the plurality of LEDs. A light emitting portion having a sealing resin in which the element is sealed and phosphor is dispersed, and an input terminal and an output terminal are provided. It is desirable to interpose a heat conductive sheet or grease between the LED modules 3, 3... And the heat transfer plate 21. The heat generated in the LED modules 3, 3... When the LED modules 3, 3... Are lit is transmitted to the heat transfer plate 21, the heat sinks 22, 22. It will be dissipated outside.

  On the side of the other surface 21b of the heat transfer plate 21 of the radiator 2, the reflection plate 4 is provided. The reflector 4 has a plurality of substantially hemispherical concave portions so as to surround the LED modules 3, 3... At positions corresponding to the LED modules 3 when the reflector 4 is attached to the radiator 2. Are formed. The reflecting plate 4 is a metal such as stainless steel, a metal coated with a highly reflective paint, or an ultrafine foamed light reflecting material having optical characteristics of high total reflectance (about 98%) and high diffuse reflectance (about 95%). It is formed of a resin material (for example, polycarbonate) filled with a material such as a material (for example, MCPET (registered trademark)) or a light scattering metal oxide (for example, titanium dioxide).

  The reflector 4 has fixing portions 42, 42 having substantially cylindrical recesses at positions corresponding to the screw holes 21d, 21d, ... provided in the heat transfer plate 21 when the reflector 4 is attached to the radiator 2. ... is provided. Further, a peripheral wall 43 is erected on the peripheral edge of the reflection plate 4. The reflection plate 4 abuts the end surface of the peripheral wall 43 against the heat transfer plate 21, and screws 45, 45. Are fixed to the radiator 2 by being inserted into through holes provided in 42, 42, and screwed into screw holes 21d, 21d provided in the heat transfer plate 21. The light from the LED modules 3, 3... Is reflected by the reflecting portions 41, 41... Of the reflecting plate 4 and included in a range where the angle formed with the optical axis of the LED modules 3, 3. In other words, light whose light distribution characteristics are controlled so that the illuminance directly below the lighting device 10 is increased is emitted from the lighting device 10.

  A decorative frame 5 is provided on the heat transfer plate 21 side of the radiator 2. The decorative frame 5 includes a cylinder 51 and an annular flange 52 extending in a radial direction in a direction orthogonal to one end of the cylinder 51. The cylinder 51 is provided with extending portions 51a, 51a... Extending from the three circumferential positions to the opposite side of the flange portion 52. The extending portions 51a, 51a. ... is provided. The through holes 51b, 51b ... are provided at positions corresponding to the screw holes 23c, 23c ... provided in the attachment portions 23, 23 ... of the radiator 2 when the decorative frame 5 is attached to the radiator 2, respectively. is there. The decorative frame 5 has the reflecting plate 4 fitted inside the other end of the cylinder 51, and the extending portions 51a, 51a, ... are brought into contact with the outer surfaces 23a, 23a, ... of the mounting portions 23, 23, ... of the radiator 2. In this state, the screws 53, 53... Are inserted into the through holes 51b, 51b, and are screwed into the screw holes 23c, 23c. A disk-shaped resin cover 6 is attached to the inner surface of the collar portion 52 of the decorative frame 5 so as to cover the LED modules 3. The cover 6 is made of polycarbonate resin, for example.

  In addition, the radiator 2 is provided with a plurality of leaf springs 7. The leaf spring 7 is made of a metal such as stainless steel, and is formed in a V shape as shown in FIG. 4 by bending an elongated rectangular plate. A rectangular plate-shaped mounting portion 71 is provided on one side of the leaf spring 7, and the other side of the leaf spring 7 sandwiching the bent portion 72 is curved convexly toward the mounting portion 71. The 1st press part 73 and the 2nd press part 74 with which the cross-sectional shape in alignment with the longitudinal direction of 7 is circular arc shape are connected. The other end of the leaf spring 7 is bent from the end of the arm 75 connected to the second pressing portion 74 to the opposite side of the mounting portion 71 at an angle to the arm 75. A retaining portion 76 is provided.

  The leaf springs 7, 7... Are inserted into the through holes provided in the attachment portions 71, 71... Of the leaf springs 7, 7. Are screwed into screw holes 23b, 23b, etc., so that the attachment portions 71, 71, ... of the leaf springs 7, 7 ... are brought into close contact with the outer surfaces 23a, 23a, ... of the attachment parts 23, 23 .... These are fixed to the radiator 2 in three circumferential directions. Note that the retaining portion 76 of the leaf spring 7 is provided to prevent the lighting device 10 from falling in a state where the first pressing portion 73 and the second pressing portion 74 of the leaf spring 7 are not in contact with the ceiling. .

  Further, the heat radiating plates 22 and 22 outside the radiator 2 are provided with latching holes 22a and 22a, respectively. The fall prevention member 1 according to the present invention described above is attached to either one of the retaining holes 22a, 22a provided in the heat radiating plates 22, 22. As will be described later, the fall prevention member 1 can prevent the lighting device 10 from falling to the floor surface.

  Mounting plates 81, 81 are fixed to the second heat radiating plates 22, 22 from the outside of the radiator 2 by screws 82, 82... In parallel with the heat radiating plates 22, 22, respectively. A disc 83 is attached to the upper part of the mounting plates 81, 81 at right angles to the mounting plates 81, 81. This circular plate 83 can prevent foreign matter such as dust and water droplets from entering between the luminaire main body 10a, in particular, the heat radiating plates 22, 22,..., And suppress the deterioration of the heat radiating performance of the radiator 2. be able to. Moreover, when a water droplet falls on the ceiling 100 due to water leakage from the upper floor or the like, it is possible to prevent the water droplet from entering the lighting device main body 10a.

  Here, the disc 83 will be described. The circular plate 83 is provided at the top of the radiator 2 so that foreign matter such as dust and water droplets does not enter between the radiator plates 22 of the radiator 2, but the diameter of the circular plate 83 is the outer circumference of the radiator 2. Is provided so that the circular plate 83 is located inside the outer periphery of the radiator 2 when viewed from the upper surface side (the side opposite to the side where the LED modules 3, 3... Are attached). It is preferable that Thus, as will be described later, when the lighting device main body 10a is inserted into the mounting hole provided in the ceiling from the lower side of the ceiling, the disc 83 does not contact the peripheral surface of the mounting hole. The main body 10a can be easily attached to the ceiling.

  In addition, a power supply unit (not shown) including various circuit components such as a transformer, a resistor, and a capacitor is provided outside the lighting apparatus body 10a. The power supply unit is connected to the LED modules 3, 3... Via lead wires (not shown) and connectors (not shown). The connector cover 91 that protects the connector includes a first cover structure 91a and a second cover structure 91b that can accommodate the male connector and the female connector therein. The connector is accommodated in the connector cover 91 by engaging and integrating the first cover component 91a and the second cover component 91b. Thereby, a connector can be protected from harmful animals, such as a rat.

  The lead wires between the LED modules 3, 3... And the first cover constituent body 91a, and the lead wires between the second cover constituent body 91b and the power supply unit are gathered together by protective tubes 92a and 92b, respectively. Metal protective springs 93a and 93b are fitted on the outer peripheral surfaces of the tubes 92a and 92b. Thereby, it is possible to prevent the lead wire from being beaten by a harmful animal such as a rat.

  The lighting device 10 configured as described above is fixed to a mounting hole 100a provided in the ceiling 100 with leaf springs 7, 7... With the cover 6 side down, and is used as a so-called downlight. . Hereinafter, the attachment procedure of the illumination device 10 will be described. FIG. 5 is a diagram illustrating a procedure for attaching the lighting device main body 10a to the mounting hole 100a of the ceiling 100. FIG.

  First, the annular portion 13b side of the wire 13 of the fall prevention member 1 is hooked on the beam 101 on the back of the ceiling, which is a holding member, and the fall prevention member 1 is passed through the annular portion 13b of the wire 13 from the other side. As shown, the fall prevention member 1 is fixed to the beam 101. Next, the hook 11 of the fall prevention member 1 is hooked on one of the retaining holes 22a and 22a. Thereby, the fall prevention member 1 can be held by suspending the lighting device body 10a from the beam 101. In this state, as shown in FIG. 5 (a), the leaf springs 7, 7... Are provided on the ceiling 100 as shown in FIG. The lighting device main body 10a is inserted into the mounting hole 100a from the lower side of the ceiling 100 in a slightly inclined state as shown by white arrows in the figure. And as shown in FIG.5 (b), the disc 83 provided in the upper part of the heat radiator 2 is inserted in the mounting hole 100a. After that, as shown in FIG. 5C, the hands are released from the leaf springs 7, 7..., And the lighting device main body 10a is moved upward as indicated by white arrows in the drawing to attach the mounting holes 100a. Push further into. In this state, one of the first pressing portion 73 and the second pressing portion 74 of the leaf springs 7, 7... Is attached to the ceiling 100 by the biasing force generated according to the elastic deformation of the leaf springs 7. The upper edge of the hole 100a is pressed obliquely from above. As a result, a downward force acts on the ceiling 100, and this reaction causes the decorative frame 5 to receive an upward force from the leaf springs 7, 7, and the upper surface of the flange 52 is pressed against the lower surface of the ceiling 100. Thus, as shown in FIG. 5D, the lighting device 10 is fixed to the mounting hole 100 a of the ceiling 100.

  The lighting device 10 thus fixed may fall off the ceiling 100 when the retaining portions 76, 76... Cannot hold the lighting device main body 10 a at the time of a disaster such as an earthquake, or when the ceiling 100 is damaged. is there. At this time, as described above, the coil spring 12 of the fall prevention member 1 can absorb the impact generated when the fall of the lighting device main body 10a is restricted so as not to collide with the floor surface. The applied force can be reduced. As a result, the impact absorbing means having a simple configuration including only the coil spring 12 separates the latching portion 11a of the hook 11 from the presser portion 11c, and the latching between the lighting device main body 10a and the hook 11 is released. It can prevent, and it can hold | maintain by hanging the illuminating device main body 10a on the beam 101, and can prevent that the illuminating device main body 10a falls to a floor surface.

  Moreover, the illuminating device 10 of the present invention uses a light and small LED as a light source, and the proportion of the aluminum radiator 2 to the entire illuminating device 10 is large. The illuminating device main body 10a is suspended from the beam 101 by the wire 13 by hooking the illuminating device main body 10a on the retaining body 11 of the fall prevention member 1 by the retaining holes 22a and 22a provided in the radiator 2. Therefore, the lighting device main body 10a can be prevented from swinging or being damaged when suspended.

(Embodiment 2)
FIG. 6 is a schematic plan view of a fall prevention member according to Embodiment 2 of the present invention. The fall prevention member 1a according to the present embodiment includes two coil springs 12 and 12 that are shock absorbers as shock absorbing means. Two coil springs 12 and 12 are connected in parallel between the annular connecting portion 13a of the wire 13 of the fall prevention member 1a and the connecting portion 11d of the hook 11. Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals as those in FIG. 1 are attached to the corresponding structural members, and detailed description of the configuration is omitted.

  The fall prevention member 1a configured in this manner prevents the held member from colliding with the floor surface by the coil springs 12 and 12 of the fall prevention member 1a, similarly to the fall prevention member 1 according to the first embodiment. Since the impact generated when the fall is restricted can be absorbed, the force applied to the hook 11 can be reduced. As a result, the hook 11 and the holding portion 11c of the hook 11 are separated from each other by the shock absorbing means having a simple configuration including only the coil springs 12 and 12, and the hook of the held member and the hook 11 is released. It is possible to prevent the holding member from falling to the floor surface by holding the held member by suspending it from the holding member.

  Since the two coil springs 12 and 12 are provided in parallel, even if one is broken, it can function as an impact absorbing means. Further, for example, by using coil springs having different characteristics as the coil springs 12 and 12 and causing the coil springs 12 and 12 to function step by step as shock absorbing means, the fall prevention member can be used depending on the installation location of the held member. It is possible to appropriately set the degree of impact absorption of 1a.

  The fall prevention member 1a according to the present embodiment can be applied to the lighting device 10 similarly to the fall prevention member 1 according to the first embodiment, and the latching between the lighting device body 10a and the hook 11 is released. It is possible to prevent the lighting device body 10a from falling to the floor surface by holding the lighting device body 10a by suspending it from the beam 101. Further, the lighting device main body 10a is hooked to the hooking body 11 of the fall prevention member 1a by the hooking holes 22a and 22a provided in the radiator 2, thereby swinging the lighting device main body 10a when suspended. Damage or the like can be suppressed.

  In the present embodiment, two coil springs 12 and 12 are used, but the number is not limited to two and may be three or more.

(Embodiment 3)
FIG. 7 is a schematic plan view of a fall prevention member according to Embodiment 3 of the present invention. The fall prevention member 1b according to the present embodiment includes three coil springs 12, 12... That are shock absorbers as shock absorbing means. Three coil springs 12, 12... Are connected in series between the annular connecting portion 13a of the wire 13 of the fall prevention member 1b and the connecting portion 11b of the hook 11. Since the other configuration is the same as that of the first embodiment shown in FIG. 1, the same reference numerals as those in FIG. 1 are attached to the corresponding structural members, and detailed description of the configuration is omitted.

  Like the fall prevention member 1 according to the first embodiment described above, the fall prevention member 1b configured as described above does not collide the held member with the floor surface by the coil springs 12, 12... Of the fall prevention member 1b. Thus, since the impact generated when the fall is restricted can be absorbed, the force applied to the hook 11 can be reduced. As a result, the hook 11 and the holding portion 11c of the hook 11 are separated from each other by the shock absorbing means having a simple configuration of only the coil springs 12, 12,..., And the hook of the held member and the hook 11 is released. This can be prevented, and the held member can be held by being suspended from the holding member, and the holding member can be prevented from falling to the floor surface.

  Since the three coil springs 12, 12... Are provided in series, for example, the coil springs 12, 12,... Thus, it is possible to appropriately set the degree of impact absorption of the fall prevention member 1b according to the installation location of the held member.

  The fall prevention member 1b according to the present embodiment can be applied to the lighting device in the same manner as the fall prevention member 1 according to the first embodiment, and the latching between the lighting device main body 10a and the hook 11 is released. This can be prevented, and the lighting device main body 10a can be held by being suspended from the beam 101, and the lighting device main body 10a can be prevented from falling to the floor surface. Further, the lighting device main body 10a is hooked on the hooking body 11 of the fall prevention member 1b by the hooking holes 22a and 22a provided in the radiator 2, thereby swinging the lighting device main body 10a when suspended. Damage or the like can be suppressed.

  In this embodiment, three coil springs 12, 12,... Are used, but the number is not limited to three, and may be two or four or more.

  In the second embodiment, a plurality of coil springs are provided in parallel. In the third embodiment, a plurality of coil springs are provided in series, but these may be combined.

(Embodiment 4)
In the above embodiment, the coil spring is used as the impact absorbing means of the fall preventing member, but the impact absorbing means is not limited to the coil spring. FIG. 8 is a schematic diagram of another shock absorbing means.

  In the figure, reference numeral 15 denotes a plate-like spring portion having a rectangular spring portion 15a and triangular attachment portions 15b and 15b extending at both ends of the spring portion 15a and provided with attachment holes 15c and 15c. It is a spring. The plate-like spring 15 is made of a metal such as stainless steel. As shown in FIG. 8, the spring portion 15 a is provided with a plurality of slits 15 d, 15 d... In a direction orthogonal to the longitudinal direction of the plate-like spring 15. This plate-like spring 15 is used in place of the coil spring of the fall prevention member according to the first to third embodiments. For example, in the fall prevention member according to the first embodiment shown in FIG. 1, the plate-like spring 15 is replaced with the coil spring 12, and the connection portions 11 b of the hook 11 and the connection portion 13 a of the wire 13 are attached to the mounting holes 15 c and 15 c. Are respectively connected to the hook 11 and the wire 13 for use.

  In this configuration, a force acts on the plate-like spring 15 in response to an impact generated on the fall prevention member due to the restriction of the fall of the held member. FIG. 9 is an operation explanatory diagram of the plate-like spring 15. FIG. 9A shows a case where the impact generated on the fall prevention member is small, and FIG. 9B shows a case where the impact generated on the fall prevention member is large.

  In an initial state where no force is applied to the plate-like spring 15, the slits 15d, 15d,... Provided in the spring portion 15a are closed as shown in FIG. When a force is applied to the plate-like spring 15 in response to an impact generated on the fall prevention member due to the restriction of the fall of the held member, the spring portion 15a is provided with slits 15d, 15d. A larger stress than that of the mounting portions 15b and 15b is generated. In response to this stress, the spring portion 15a expands and the slits 15d, 15d... Open, and the state shown in FIG. The deformation of the spring portion 15a at this time is elastic deformation, and when the force acting on the plate-like spring 15 is lost, the state returns to the state shown in FIG. When a larger force is applied to the plate-like spring 15, the spring portion 15a is further extended, and the slits 15d, 15d,... Are largely opened, and the state shown in FIG. The deformation of the spring portion 15a at this time is plastic deformation, and even if the force acting on the plate-like spring 15 is lost, the state does not return to the state shown in FIG.

  As described above, when the impact generated on the fall prevention member is small, the impact is absorbed by the elastic deformation of the plate-like spring 15. On the other hand, when the impact generated on the fall prevention member is large, the plate-like spring 15 is absorbed. Since the kinetic energy associated with the fall of the held member can be actively consumed by the plastic deformation of the material to absorb the impact, the impact generated when the fall is restricted so that the held member does not collide with the floor surface. It can absorb enough and the force added to the hook 11 can be made small. As a result, the latching portion 11a and the holding portion 11c of the hook 11 are separated from each other by the shock absorbing means having a simple configuration including only the plate-like spring 15, and the latching between the held member and the hook 11 is released. It is possible to prevent the holding member from falling to the floor surface by holding the held member by suspending it from the holding member.

  The fall prevention member having the spring according to the present embodiment can be applied to the lighting device in the same manner as the fall prevention member according to the first to third embodiments, and the lighting device main body 10a and the hook 11 are latched. It is possible to prevent the lighting device main body 10a from being dropped to the floor by holding the lighting device main body 10a by suspending it from the beam 101 and preventing the release from being released. Further, the lighting device main body 10a is suspended by the latching body 11 of the fall prevention member by the locking holes 22a and 22a provided in the radiator 2, so that the lighting device main body 10a swings or breaks when suspended. Etc. can be suppressed.

  In the present embodiment, the case where only one plate-like spring 15 is used has been described as an example. However, the present invention is not limited to this, and a plurality of springs are arranged in parallel as in the fall prevention member according to the embodiment. A plurality of springs may be provided in series as in the fall prevention member according to Embodiment 3, or a combination of these may be provided.

  In the above embodiment, a coil spring or a plate-like spring in which a plurality of slits are arranged in a direction crossing the extension direction is used as the shock absorbing means of the fall prevention member. The member is not limited as long as the member can absorb the impact on the fall prevention member. Further, a memory shape alloy may be used as the material of the impact absorbing means. In this case, even if the impact absorbing means absorbs the impact on the fall prevention member and deforms, the shape returns to the state before the deformation, and therefore the impact absorbing means can be used repeatedly.

  In the above embodiment, the shock absorbing means and the hook are formed separately, but may be formed integrally.

  Further, the surface of the wire and / or the impact absorbing means according to the above embodiments may be coated with a resin to absorb the impact by deformation of the resin or the like.

  Further, in the above embodiment, the wire of the fall prevention member, the shock absorbing means and the hook are made of metal, but the present invention is not limited to this, and may be made of resin, glass fiber or carbon fiber. It may be made of reinforced resin. Furthermore, a twisting prevention mechanism such as a swivel may be provided in the middle of the fall prevention member.

  Moreover, although the beam of the ceiling back is illustrated as a holding member in the above embodiment, it is not limited to this, The holding member may be the power supply part of the illuminating device installed in a ceiling back. Since the power supply unit is connected and fixed to the power line arranged on the back of the ceiling, by connecting the lighting device main body, which is a member to be held, and the power supply unit with a fall prevention member, as described above An effect can be obtained.

  Thus, when using a power supply part as a holding member, the fall prevention member concerning Embodiment 1 thru | or 4 can be used as a fall prevention member. Moreover, the fall prevention member which has a bending wire comprised so that a wire may be bent as an impact-absorbing member, and an impact may be absorbed by the expansion-contraction or irreversible deformation | transformation of the bending part of a wire can be used.

  FIG. 10 is a diagram illustrating an example in which the lighting device main body 10a and the power supply unit are connected using a bending wire as a fall prevention member. In the figure, reference numeral 16 denotes a bending wire configured to bend the wire and absorb the impact by expansion or contraction or irreversible deformation of the bent portion of the wire. The first cover component 91a and the second cover component 91b of the connector cover 91 and the power supply cover of the power supply unit 9 are provided with insertion holes 91c, 91d, and 9a for inserting wires, respectively. One bending wire 16 is inserted through one end and the other end of the bending wire 16 into a hooking hole 22a provided in the heat radiating plate 22 of the radiator 2 and an insertion hole 91c provided in the first cover component 91a. Thus, the radiator 2 and the connector cover 91 of the illuminating device main body 10a are connected to each other by connecting portions 16a and 16a formed in an annular shape by the sleeves 14a and 14a. The other bending wire 16 has one end and the other end side of the bending wire 16 inserted into insertion holes 91d and 9a provided in the power supply cover of the second cover constituting body 91b and the power supply unit 9, respectively, by sleeves 14a and 14a. The connector cover 91 and the power supply unit 9 are connected by connecting portions 16a and 16a formed in an annular shape.

  With this configuration, even when the lighting device main body 10a is about to fall from the mounting hole in the ceiling, the bending wires 16 and 16 themselves act as an impact absorbing member so that the lighting device does not collide with the floor surface. Can be suspended and held. More specifically, when the bent portions of the bending wires 16 and 16 are extended, the impact applied to the drop preventing member or the radiator 2, the connector cover 91, and the latching portion of the drop preventing member attached to the power supply unit 9 is absorbed. be able to.

  When the bending wires 16 and 16 are used as the fall prevention member, the bending wires 16 and 16 have a length obtained by extending the bending portion, and the cables between the lighting device main body 10a, the connector cover 91, and the power supply unit 9 are used. The length is preferably shorter than the lengths of 92a and 92b. Therefore, it is possible to prevent the impact at the time of dropping from being applied to the cables 92a and 92b. The lighting device body 10a and the power supply unit 9 may be directly connected with a bending wire.

  Moreover, in Embodiment 1 thru | or 4, the protection tube and protection spring which protect the lead wire which connects a power supply part and LED module 3,3 ... are provided, and the fall prevention member is provided separately. By appropriately setting the lead wire and the lead wire protection member, it may be configured to also serve as a fall prevention member. In this case, a flexible member, for example, a spring cable, may be used as a protective tube for bringing together the lead wires, and the spring cable may have a predetermined rigidity.

  In the above embodiment, the LED modules 3, 3... On which a plurality of LED elements are mounted are used as the light source of the lighting device. However, the present invention is not limited to this. Electro Luminescence), a fluorescent lamp, a light bulb, or the like may be used.

  Moreover, in the above embodiment, although the downlight was demonstrated to the example as an illuminating device, it is not limited to this, The fall prevention member based on this invention is applicable also to another type of illuminating device. For example, the present invention can also be applied to a ceiling light provided on a ceiling and having a flat rectangular parallelepiped shape that illuminates the entire room. In this case, it is preferable to attach the retaining member of the fall prevention member to the heaviest member of the illuminating device main body, and in accordance with the dimensions of the illuminating device main body, a plurality of locations (e.g. It is preferable to attach the latching body of the fall prevention member to the upper two places).

  Moreover, this invention is not limited to an illuminating device, For example, it is applicable also to apparatuses, such as an air conditioning apparatus and a surveillance camera, installed in ceilings other than an illuminating device. Furthermore, the present invention is not limited to the ceiling surface, and can be similarly applied to devices such as a lighting device installed on an installation surface such as a wall surface. In addition, it goes without saying that various modifications can be made within the scope of the matters described in the claims.

It is a typical top view of the fall prevention member concerning Embodiment 1 of the present invention. It is an enlarged view of the coil spring seen from the II-II arrow of FIG. It is an external appearance perspective view of an illuminating device provided with the fall prevention member which concerns on Embodiment 1. FIG. It is a typical side view of an illuminating device. It is a figure explaining the attachment procedure to the mounting hole of the ceiling of an illuminating device main body. It is a typical top view of the fall prevention member concerning Embodiment 2 of the present invention. It is a typical top view of the fall prevention member concerning Embodiment 3 of the present invention. It is a schematic diagram of another impact absorption means. It is operation | movement explanatory drawing of a plate-shaped spring. It is a figure which shows the example which connected between the illuminating device main body and the power supply part using the bending wire as a fall prevention member.

Explanation of symbols

1, 1a, 1b Fall prevention member 2 Radiator 3 LED module (light source)
10 Illumination device (held member)
10a Illuminating device body 11 Hook (holding body)
12 Coil spring (shock absorber, shock absorber)
13 wire 15 plate spring (impact absorber, shock absorbing means)
15d slit 16 bending wire (impact absorber, shock absorbing means)
101 Holding member

Claims (8)

  In the fall prevention member that holds the held member on the holding member so as to prevent the held member such as a lighting device from falling and colliding with the floor surface or the like, this occurs when the collision of the held member is prevented. A fall prevention member comprising an impact absorbing means for absorbing an impact on the fall prevention member. A latching body for latching the held member;
The impact absorbing means absorbs an impact generated when preventing the collision of the held member, thereby preventing the latching body from being deformed and releasing the latch of the held member. The fall prevention member according to claim 1 characterized by things.   A holding body that holds the held member; and a wire that is connected to the holding member on one side so as to suspend the held member from the holding member. The fall prevention member according to claim 1 or 2, wherein the fall prevention member is provided on the other side or in the middle.   The fall preventing member according to any one of claims 1 to 3, wherein the impact absorbing means is a coil spring.   The fall preventing member according to any one of claims 1 to 3, wherein the impact absorbing means is a plate-like spring in which a plurality of slits are arranged in parallel in a direction crossing the extension direction.   The fall preventing member according to any one of claims 1 to 3, wherein the impact absorbing means is a bent wire.   The fall preventing member according to any one of claims 1 to 6, wherein the shock absorbing means is formed by connecting a plurality of shock absorbers in series or in parallel.   In the illuminating device configured to be able to hold the illuminating device main body on the holding member by the fall preventing member in order to prevent the illuminating device main body having the light source from falling, the fall preventing member includes: 7. A lighting device according to claim 7, wherein the lighting device is a fall prevention member.

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