JP6316027B2 - Packing mounting mechanism, packing, light source unit and lighting fixture - Google Patents

Description

  The present invention relates to a packing mounting mechanism, a packing, a light source unit, and a lighting fixture. In particular, the present invention relates to a packing that seals an end portion of a light-transmitting cover, a packing mounting mechanism that uses the packing, a light source unit that includes the packing mounting mechanism, and a lighting fixture that includes the light source unit.

  There is a technique for waterproofing by inserting a packing into an end portion of a cylindrical outer cover (see, for example, Patent Document 1). Moreover, there exists a technique which inserts an electric wire into packing and improves the waterproof performance of a lighting device (for example, refer patent documents 2-4).

JP 2006-12751 A JP 2012-216477 A JP 2013-254579 A JP2013-243149A

  In the prior art, since the electric wire was inserted into the through hole provided in the packing from the direction of the small opening, there was a problem that the assemblability deteriorated.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a packing mounting mechanism in which an electric wire can be easily inserted with a simple configuration.

  A packing mounting mechanism according to the present invention includes a tubular member having an open end, a tubular member having a notch formed at an edge of the opening that forms the opening, and a packing that seals the opening. The packing is a sealed portion that closes the opening, and a convex portion that protrudes from the sealed portion, and is formed with a through hole that is press-fitted into the notch and penetrates from the outside to the inside of the tubular member. And a convex part formed with a slit cut from the outer periphery to the through hole.

  According to the packing attachment mechanism according to the present invention, there is an effect that the electric wire can be easily inserted into the waterproof packing.

1 is a perspective view of a lighting fixture 1000 according to Embodiment 1. FIG. It is the disassembled perspective view which removed the reflecting plate 400 in the lighting fixture 1000 which concerns on Embodiment 1. FIG. FIG. 3 is an exploded perspective view of the lighting apparatus 1000 according to Embodiment 1 with the frame body 500 removed. It is a figure which shows the light source unit 300 which concerns on Embodiment 1, (a) is a disassembled perspective view of the light source unit 300, (b) is an assembly figure of the state which assembled the light source unit 300 of (a). FIG. 3 is a partial perspective view of translucent cover 320 according to Embodiment 1 as viewed from the end. It is a figure which shows the other example of the shape of the packing attachment groove | channel 321a which concerns on Embodiment 1. FIG. 3 is a perspective view of a waterproof packing 360 according to Embodiment 1. FIG. It is a figure which shows the waterproof packing 360 which concerns on Embodiment 1, and is the perspective view seen from the direction different from FIG. It is the side view which looked at the waterproof packing 360 which concerns on Embodiment 1 from P1 of FIG. FIG. 8 is a plan view seen from P <b> 2 of FIG. 7 when the waterproof packing 360 according to Embodiment 1 is attached to the translucent cover 320. It is a figure which shows the variation (a)-(d) of the shape of the slit 363b which concerns on Embodiment 2. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, directions such as “up”, “down”, “left”, “right”, “front”, “back”, “front”, “back” are for convenience of explanation. It is only described as such, and does not limit the arrangement or orientation of devices, instruments, parts, and the like.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 1000 according to the present embodiment. FIG. 2 is an exploded perspective view in which the reflector 400 is removed from the lighting fixture 1000 according to the present embodiment. FIG. 3 is an exploded perspective view with the frame body 500 removed from the lighting apparatus 1000 according to the present embodiment.

  The luminaire 1000 is attached to a mounted portion such as a ceiling surface or a wall surface, for example. In this embodiment, the ceiling surface is described as a mounted portion, the mounted portion side is described as a ceiling surface side or upper (upper side), and the opposite side of the mounted portion side is described as an irradiation direction side or lower (lower). To do. Note that this embodiment can be applied even when a wall surface or the like is used as the attached portion.

  As shown in FIGS. 1 to 3, the lighting fixture 1000 includes a fixture main body 100, a lighting device 200 attached to the fixture main body 100, a light source unit 300, a reflector 400, and a frame 500.

  The instrument body 100 is made of sheet metal. As shown in FIG. 3, the instrument main body 100 includes a main body mounting portion 110 having a square shape, and a main body peripheral portion 120 formed by being bent from four sides of the main body mounting portion 110. The main body attachment portion 110 does not have to be square. The main body attachment portion 110 may have other shapes such as a rectangle, a polygon, a circle, and an ellipse.

  As shown in FIG. 3, the body attachment portion 110 includes a lighting device attachment portion 111 to which the lighting device 200 is attached, a light source unit attachment portion 112 to which the light source unit 300 is attached, and a ceiling attachment attached to an attachment portion such as a ceiling. Part 113, reflector mounting part 114 to which reflector 400 is attached, and frame attachment part 115 to which frame 500 is attached.

  The main body peripheral portion 120 is formed by bending the peripheral edge portion of the main body attachment portion 110 into an L shape, and has a function for increasing the strength against bending of the instrument main body 100 (main body attachment portion 110).

  The lighting device 200 is attached to the lighting device attachment portion 111. The lighting device 200 receives power supplied from a commercial power source or the like, generates secondary power for the light source unit to be supplied to the light source unit 300 from this power, and transmits the generated secondary power to the light source unit 300 with an electric wire (hereinafter referred to as a power source). , And supplied through an output electric wire 600 (refer to FIG. 8).

  The light source unit 300 is attached to the light source unit attachment part 112. The detailed structure of the light source unit mounting portion 112 will be described later.

  The reflection plate 400 is made of sheet metal. As shown in FIG. 2, the reflection plate 400 is formed by bending a sheet metal into a V shape. The reflection plate 400 is attached to the reflection plate attachment portion 114 so as to hide the ceiling attachment portion 113 that is fixed when the instrument body 100 is attached to the attachment portion.

The frame 500 is made of sheet metal. As shown in FIG. 3, four frame members formed by bending a sheet metal are attached in contact with each other and formed into a “B” shape. The frame body 500 is attached to the frame body attaching portion 115 so as to cover the main body peripheral portion 120.
Note that the frame does not have to have a “B” shape. Other shapes may be used as long as the shape corresponds to the shape of the instrument body 100.

Next, the detailed structure of the light source unit 300 will be described.
4A and 4B are diagrams showing the light source unit 300 according to the present embodiment, in which FIG. 4A is an exploded perspective view of the light source unit 300, and FIG. 4B is an assembly view of the light source unit 300 in FIG. is there.
FIG. 5 is a partial perspective view of the translucent cover 320 according to the present embodiment as viewed from the end.
FIG. 6 is a view showing another example of the shape of the packing mounting groove 321a according to the present embodiment.
FIG. 7 is a perspective view of the waterproof packing 360 according to the present embodiment.
FIG. 8 is a view showing the waterproof packing 360 according to the present embodiment, and is a perspective view seen from a direction different from FIG.

As shown in FIGS. 4A, 4B, and 5, the light source unit 300 includes a unit base 310, a translucent cover 320, and an LED module 340 accommodated in the translucent cover 320.
The translucent cover 320 is a tubular member having an opening at the end, and is provided with an opening 326 that forms an opening.

  The light source unit 300 includes two end covers 350 that are attached to both ends of the unit base 310 and the openings 326 at both ends of the translucent cover 320 and fix the translucent cover 320 to the unit base 310. . Further, two waterproof packings 360 are provided so as to be interposed between the end cover 350 and the translucent cover 320.

Unit base 310 is formed of sheet metal. The unit base 310 has a sheet metal bent in a “U” shape. The unit base 310 has an elongated rectangular attachment base portion 311 and two base side portions 312 formed in the short direction of the attachment base portion 311.
At both ends of the mounting base portion 311, a wire insertion cutout portion 311 a is formed that forms a cutout for routing the output electric wire 600 (see FIG. 10) drawn from the lighting device 200.
End cover attachment holes 312 a to which the end cover 350 is attached are formed at both ends of the base side portion 312.

  The translucent cover 320 is formed of, for example, milk white resin (acrylic) and has a hollow shape with both ends opened. The translucent cover 320 has, for example, a hollow kamaboko shape, and has a semicircular cross section and a mountain cross section. The translucent cover 320 may be other resin of milky white resin (acrylic), such as polycarbonate, mixed resin containing polycarbonate, or the like.

As shown in FIG. 5, the translucent cover 320 includes a flat contact portion 321 that comes into contact with the mounting base portion 311, and an upright portion 322 that rises from both ends in the short direction of the contact portion 321. In addition, a support portion 323 that protrudes inward (inward) from the upright portion 322 and presses the LED module 340 against the contact portion 321, rises from the support portion 323 to the opposite side of the contact portion 321, and forms a curved surface And a translucent portion 324.
Note that a protrusion 362 (see FIG. 7) of a waterproof packing 360, which will be described later, is inserted into the opening 326, so that the support portion 323 is formed at a position recessed from the end of the translucent cover 320 by a predetermined distance. The The predetermined distance is a distance equivalent to the thickness of the protruding portion 362 (see FIG. 7) or a distance slightly longer than the thickness of the protruding portion 362.

  In addition, the cross-sectional shape of the translucent cover 320 may not be semicircular. As long as the contact portion 321 is formed, a triangular shape, a quadrangular shape, a polygonal shape, or an indefinite shape may be used.

At both ends of the contact portion 321, packing attachment grooves 321 a into which the waterproof packing 360 is fitted are formed. The packing attachment groove 321 a is a notch formed at the edge of the opening 326.
An electric wire insertion portion 363 (convex portion) of a waterproof packing 360, which will be described later, is fitted into the packing mounting groove 321a. The shape of the packing mounting groove 321a is a square or a rectangle. When the shape of the packing mounting groove 321a is a rectangle, the side along the short direction of the translucent cover 320 is the long side and the side along the long direction of the translucent cover 320 is short among the sides of the rectangle. A side is preferred.
The packing attachment groove 321a has a pair of opposing side edge portions 3211 and a back edge portion 3212 connecting the pair of side edge portions 3211.

  As shown in FIG. 6, the packing mounting groove 321 a may have a trapezoidal shape in which the inlet is wide and narrows toward the back.

  In particular, as in the present embodiment, when the slit 363b (see FIG. 7) has an entrance at the back side of the packing mounting groove 321a (tip portion 363d of the wire insertion portion 363), the packing shown in FIG. The shape of the mounting groove 321a is effective. As shown in FIG. 8, the notch 3213 of the packing mounting groove 321 a is made wider than the back edge portion 3212. In other words, if the wire insertion portion 363 is made narrower as it enters the packing attachment groove 321a, the wire insertion portion 363 can be easily inserted into the packing attachment groove 321a, and when the wire insertion portion 363 is inserted into the packing attachment groove 321a, more wire insertion is possible. The pressure which presses the part 363 from the outer periphery to the inside can be increased. Therefore, since the force with which the slit 363b is pressed becomes strong, the adhesion of the slit 363b is improved, and the waterproof performance can be enhanced.

The LED module 340 includes a rectangular LED substrate 342.
A plurality of LEDs 341 are mounted on the LED substrate 342. In addition, a connector 343 to which an output electric wire 600 (see FIG. 7) for supplying power to the plurality of LEDs 341 is connected is mounted on the LED board 342.

  The end cover 350 has a shape that can be attached so as to close both ends of the unit base 310 and the openings 326 at both ends of the translucent cover 320. The end cover 350 is fixed to the light source unit mounting portion 112 (see FIG. 3), and rises from the mounting portion 351. As described above, the end portion of the unit base 310 and the end of the translucent cover 320 are provided. A closed portion 352 that covers and closes the opening 326 of the portion.

  The closing part 352 has an attachment convex part 352a that engages with the end cover attachment hole 312a of the unit base 310 (base side part 312), and a waterproof packing attachment part 352b into which the waterproof packing 360 is fitted.

  The waterproof packing 360 is formed of a material having elasticity such as silicon. The waterproof packing 360 has substantially the same shape as the shape of the end of the translucent cover 320 (opening 326). The waterproof packing 360 is an example of a packing that seals the opening 326.

  As shown in FIGS. 7 and 8, the waterproof packing 360 is in contact with the end surface of the end portion of the translucent cover 320, and seals 361 that closes the opening 326, and protrudes from the seal 361 to transmit the translucent cover. 320 has a protruding portion 362 that is in close contact with the inner wall of 320, and an electric wire insertion portion 363 (convex portion) that protrudes from the sealing portion 361 and is fitted into the packing mounting groove 321a (notch). The electric wire insertion portion 363 is press-fitted into the packing attachment groove 321a from the distal end portion 363d.

  The sealing part 361 has the same shape as the opening of the end face of the translucent cover 320, and the size is the same as or slightly larger than the outer periphery of the end face. Thereby, the opening of the end surface of the translucent cover 320 can be reliably closed by the waterproof packing 360.

  The protruding portion 362 protrudes from the sealing portion 361 and is inserted into the opening on the end surface of the translucent cover 320. At this time, the side surface portion 362a of the protruding portion 362 is in close contact with the inner wall of the translucent cover 320, and the opening 326 of the translucent cover 320 is securely sealed.

  As shown in FIG. 8, the electric wire insertion part 363 includes an electric wire insertion hole 363a (through hole) into which an output electric wire 600 that connects the lighting device 200 and the light source unit 300 (LED module 340) is inserted, and the electric wire insertion hole. A slit 363b cut from 363a to the outer periphery of the waterproof packing 360.

  The electric wire insertion portion 363 has a substantially rectangular parallelepiped shape, the protruding tip surface is a tip portion 363d, the unit base 310 side surface is a convex top surface portion 363f, the irradiation direction side surface is a convex bottom surface portion 363g, and both side surfaces are side surfaces. Let it be a convex side surface portion 363e.

  The electric wire insertion portion 363 protrudes from the sealing portion 361, is press-fitted into the packing mounting groove 321a (notch) from the distal end portion 363d, and penetrates from the outside (the tubular member) of the translucent cover 320 to the inside of the electric wire insertion hole 363a ( This is an example of a convex portion in which a slit 363b cut from the outer periphery of the waterproof packing 360 to the wire insertion hole 363a is formed. In the present embodiment, the slit 363b is cut from the tip portion 363d to the electric wire insertion hole 363a, but may not be cut from the tip portion 363d. As long as the output electric wire 600 can be inserted, it may be cut from any position on the outer periphery of the waterproof packing 360. You may cut from the convex part side part 363e.

The electric wire insertion hole 363a is a hole having a diameter narrower than the diameter of the output electric wire.
The slit 363b is a straight cut, and when the wire insertion portion 363 is fitted into the packing mounting groove 321a, both side surfaces (the convex side surfaces 363e on both sides) with respect to the cut are pushed to make the cut (slit 363b). ) Are in close contact with each other.
Further, the cover insertion groove 363c into which the side edge portion 3211 (see FIG. 5) of the packing mounting groove 321a is inserted is formed in the convex side surface portions 363e on both sides of the electric wire insertion hole 363a.

  As described above, the packing attachment mechanism 700 is configured by the waterproof packing 360 including the sealing portion 361, the protruding portion 362, and the wire insertion portion 363 and the translucent cover 320 including the packing attachment groove 321a.

Next, assembly of the light source unit 300 will be described.
First, both end portions of the LED module 340 are inserted between the support portion 323 and the contact portion 321, and the LED module 340 is inserted into the translucent cover 320. Thereby, as shown in FIG. 4, the LED module 340 is accommodated in the translucent cover 320.

Next, the output electric wire 600 is connected to the connector 343 of the LED module 340. Then, the output electric wire 600 is inserted from the slit 363b, the output electric wire 600 is inserted until it enters the electric wire insertion hole 363a, and the output electric wire 600 is attached to the waterproof packing 360. Thereby, as shown in FIG. 7, the output electric wire 600 is attached to the waterproof packing 360.
After this state, the waterproof packing 360 is attached to the opening 326 at the end of the translucent cover 320, the protruding portion 362 is pushed into contact with the inner wall of the translucent cover 320, and the wire is inserted into the packing mounting groove 321a. The insertion part 363 is fitted.

FIG. 9 is a side view of the waterproof packing 360 according to the present embodiment as viewed from P1 of FIG.
FIG. 10 is a plan view seen from P2 of FIG. 7 when the waterproof packing 360 according to the present embodiment is attached to the translucent cover 320. FIG.
In FIG. 9, the dotted line indicates the translucent cover 320. A two-dot chain line indicates the LED module 340.
In FIG. 10, the output electric wire 600 is omitted.

  As shown in FIG. 9, in the electric wire insertion portion 363, the portion on the irradiation direction side from the cover insertion groove 363 c is formed to protrude from the protrusion portion 362. Further, the cover insertion groove 363c and the portion on the unit base 310 side from the cover insertion groove 363c are formed so as to protrude from the sealing portion 361.

As shown in FIG. 10, when the wire insertion portion 363 is press-fitted into the packing mounting groove 321a, the side edges 3211 on both sides of the packing mounting groove 321a cause both sides of P4 and P5 with respect to the wire insertion portion 363. Power is added from. Thereby, the slits 363b are more closely attached and the sealing performance is improved.
Further, the distal end portion 363d of the wire insertion portion 363 and the inner edge portion 3212 of the packing mounting groove 321a are brought into close contact with each other by press fitting, and the sealing performance is improved.

  Thus, the slit 363b can make it easy to attach the output electric wire 600 to the electric wire insertion hole 363a, and by fitting the electric wire insertion portion 363 into the packing attachment groove 321a, the slit 363b is pushed to improve the adhesion. , Can improve waterproofness.

  Next, the contact portion 321 of the translucent cover 320 is brought into contact with the mounting base portion 311 of the unit base 310. At this time, the output electric wire is inserted into the electric wire insertion notch 311 a of the attachment base portion 311.

  After this state, the end cover 350 is attached to both ends of the translucent cover 320 and the unit base 310, and the attachment protrusions 352a are fitted into the end cover attachment holes 312a and engaged. At this time, since the end cover 350 is attached so as to cover the end of the translucent cover 320, the translucent cover 320 can be fixed to the unit base 310 and the sealing portion 361 of the waterproof packing 360 is transparent. Since it presses against the edge part (opening part 326) of the optical cover 320, waterproof performance can be improved.

  The light source unit 300 assembled in this way is attached to the light source unit attachment part 112 of the fixture body 100, and the lighting fixture 1000 is assembled.

As described above, by using the packing attachment mechanism 700 of the present embodiment, the output electric wire 600 can be easily attached to the waterproof packing 360, and the waterproof performance can be enhanced after the lighting fixture 1000 is assembled.
Further, when the waterproof packing 360 in the present embodiment is used, IP23 (diameter 12), which is a protection grade IP indication (solid foreign matter, electrical equipment against water, cabinet protection grade defined based on JIS C0920: 2003 or IEC 60529). Protection against intrusion of solids larger than 5 mm and not being adversely affected by water falling into the spray water within 60 ° from the vertical).

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.
In Embodiment 1, the case where the shape of the slit 363b is a straight line and the two slits 363b are parallel to each other has been described. In the present embodiment, variations of the shape of the slit 363b other than the first embodiment will be described.
In the present embodiment, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

FIG. 11 is a diagram showing variations (a) to (d) of the shape of the slit 363b according to the present embodiment.
11A to 11D show a convex upper surface portion 363f and a distal end portion 363d of the electric wire insertion portion 363.

As shown in FIG. 11A, the interval between the two linear slits 363b may be formed so as to become narrower as it approaches the wire insertion hole 363a. Or you may form so that the space | interval of the two linear slits 363b may become large as it approaches the electric wire insertion hole 363a.
Alternatively, as shown by the dotted line in FIG. 11A, the corners on both sides of the tip 363d may be chamfered. Thereby, it becomes easy to insert the electric wire insertion part 363 into the packing attachment groove 321a.

As shown in FIG. 11B, the slit 363b may have a jagged shape.
Moreover, as shown in FIG.11 (c), you may make the shape of the slit 363b wavy shape.
Thus, by making the slits 363b jagged or wavy, when the wire insertion portion 363 is fitted in the packing mounting groove 321a, the line contact portion can be increased. By creating a line contact portion, stress concentrates on the line contact portion, so that adhesion is enhanced and waterproof performance can be enhanced. Moreover, since the line contact part increases, waterproof performance can be made higher.

  Further, as shown in FIG. 11D, the slit 363b may be cut in a straight line in the insertion direction of the output electric wire 600, and the insertion direction of the output electric wire in assembling may be in a jagged or wavy shape. Also in this case, when the electric wire insertion portion 363 is fitted into the packing attachment groove 321a, the line contact portion of the slit 363b can be increased, so that the waterproof performance can be enhanced.

  Thus, if the waterproof packing 360 of this Embodiment is used, waterproof performance can be improved more.

  Note that the waterproof packing 360 and the packing attachment mechanism 700 of the first and second embodiments may be attached not only to the light source unit 300 but also to a waterproof case for making the lighting device 200 waterproof. Or you may use in order to take a waterproof measure with respect to the power wire drawn from the exterior of the lighting fixture 1000. FIG.

  As mentioned above, although embodiment of this invention was described, you may implement combining 2 of these embodiment. Alternatively, one of these embodiments may be partially implemented. Alternatively, two of these embodiments may be partially combined. In addition, this invention is not limited to these embodiment, A various change is possible as needed.

  DESCRIPTION OF SYMBOLS 100 Instrument main body, 110 Main body attaching part, 111 Lighting device attaching part, 112 Light source unit attaching part, 113 Ceiling attaching part, 114 Reflecting plate attaching part, 115 Frame body attaching part, 120 Main body peripheral part, 200 Lighting device, 300 Light source unit , 310 Unit base, 311 Mounting base portion, 311a Wire insertion notch, 312 Base side portion, 312a End cover mounting hole, 320 Translucent cover, 321 Contact portion, 321a Packing mounting groove, 322 Upright portion, 323 Support Part, 324 translucent part, 326 opening part, 340 LED module, 341 LED, 342 LED board, 343 connector, 350 end cover, 351 attaching part, 352 closing part, 352a attaching convex part, 352b waterproof packing attaching part, 360 Waterproof packing, 361 Sealing part, 362 Extruded part, 362a Side part, 363 Wire insertion part, 363a Wire insertion hole, 363b Slit, 363c Cover insertion groove, 363d Tip, 363e Convex side part, 363f Convex part top part, 363g Convex part bottom part, 400 Reflection Plate, 500 frame, 600 output electric wire, 700 packing mounting mechanism, 1000 lighting fixture, 3211 side edge, 3212 deep edge, 3213 notch.

Claims (5)

A tubular member having an opening at the end, the tubular member having a notch formed at the edge of the opening that forms the opening;
A packing for sealing the opening,
The packing is
A sealed portion that closes the opening;
A projecting part that projects from the sealed part and adheres closely to the inner wall of the tubular member, and seals the opening;
A convex portion protruding from the hermetic portion, which is press-fitted into the notch to form a through-hole penetrating from the outside to the inside of the tubular member, and forming a slit cut from the outer periphery to the through-hole. It has been raised portion and the Bei Etapa Kkin attachment mechanism. The convex portion, the packing mounting mechanism according to 請 Motomeko 1, wherein slits cut from the tip portion to the through-hole is formed. In the packing for sealing the opening of the tubular member having an opening that forms an opening, the tubular member having an open end,
A sealed portion that closes the opening;
A projecting part that projects from the sealed part and adheres closely to the inner wall of the tubular member, and seals the opening;
A convex portion protruding from the sealing portion, press-fitted into a notch formed at an edge of the opening, and forming a through-hole penetrating from the outside to the inside of the tubular member. Bei Etapa Kkin the convex portion with a slit cut into until holes are formed. The packing mounting mechanism according to claim 1 or 2,
Light source element is mounted, the light source unit example Bei a board accommodated in said tubular member. A light source unit comprising: the packing mounting mechanism according to claim 1; and a substrate on which a light source element is mounted and accommodated in the tubular member;
A lighting device for lighting the light source element;
The light source unit and the lighting device and the lighting instrument example Bei and a fixture body for mounting the.

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