JP2008147044A - Adapter of unit type downlight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adaptor facilitating installation or the like of a replacement component in a unit type downlight having a common constituent portion as a unit. <P>SOLUTION: This is a socket 30 used for a unit type downlight which has a basic structure unit 20 formed by installing a cup-shape reflector 21 and a socket 22 for light source 8 fitting on a frame 23 as a common component, and in which any one of cone 50 of tubular shape selected from a plurality of kinds having at least a different total length can be installed on the basic structure unit 20. This socket 30 has a tubular shape to surround the recessed front part of a reflector 21 and has inside one end capable of detachably attaching to the frame 23 of the basic structure unit 20 and an installation part 37 to lock the one end of the cone 50 formed in common shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an adapter for unit-type downlights as architectural lighting. More specifically, the present invention relates to a common main component as a basic component and cuts off by changing the component combined with the basic component. The present invention relates to an adapter for mounting components and the like used in a unit-type downlight configured to easily obtain downlights having different angles, color rendering properties, light diffusion or focusing states, and the like.

  As shown in FIG. 8, for example, the conventional general downlight has a cup-shaped reflector 90 that is opened downward and accommodates a cup-shaped reflector 21 that opens downward. 21 is a light bulb here, but by arranging a light source composed of various lamps such as halogen bulbs, the light emitted from the lamp 8 can be reflected by the reflector 21 and irradiated in a predetermined direction. The cover 90 is inserted into the mounting hole 7 formed in the ceiling or the like, and a flange-like frame body 91 formed at the opening edge of the cover 90 is formed in the ceiling or the like. The downlight can be attached in a state of being embedded in the ceiling or the like by being attached in a state where it is in contact with the edge of the aperture (FIG. 1 of Patent Document 1).

  In addition, without attaching the cover provided on the downlight directly in the mounting hole formed on the ceiling or the like, a fixture configured separately from the main body of the downlight is attached in advance in the mounting hole provided on the ceiling. There has also been proposed a downlight in which a downlight main body constituted by housing a reflector and a light source in a cover is detachable (Patent Document 2).

Prior art document information of the present invention includes the following.
Japanese Patent Laid-Open No. 2003-45205 JP 2005-276703 A

  By the way, the above-mentioned downlight used by attaching to the ceiling or the like is not only used as a lighting fixture for obtaining brightness, but also for the purpose of directing the atmosphere of the place illuminated by this downlight. In many cases, it is used as a lighting fixture for a display to make an exhibit stand out.

  When the downlight is used for such a purpose, the spread angle of the light emitted from the downlight, the direction of the light, the diffusion or focusing state of the light according to the exhibition or the atmosphere to be produced, It is required that the light color can be selected.

  However, in the conventional downlight described above, for example, in order to change the angle θ outside the light irradiation range (hereinafter, this angle θ is referred to as “cut-off angle”), the arrangement position of the lamp 8 in the reflector 21 is changed. Or the shape and size of the reflector 21 need to be changed, and in any case, the downlight structure needs to be significantly changed.

  Therefore, in the conventional downlight, such downlights having different cut-off angles θ are manufactured as separate products.

  Further, when it is intended to provide such a downlight with a lens, a screen, a louver or the like that covers the front of the opening of the reflector 21, the shape and size of the reflector 21 according to the difference in the cut-off angle as described above. Especially, if the size of the opening is different for each product, it is necessary to manufacture lenses, screens, louvers, etc. corresponding to the size of each product, and such parts cannot be shared. .

  In this way, due to the difference in cut-off angle, when manufacturing downlights and replacement parts having respective cut-off angles separately, it is necessary to provide a manufacturing facility and a production line for each product. Large capital investment is required, and this will be reflected in the price of the product.

  In addition, when changing the cut-off angle of a downlight that has already been installed, it is necessary to remove the entire existing downlight and replace it with a newly prepared downlight with a different cut-off angle. If the downlight itself needs to be replaced, and if such downlight replacement requires electrical wiring work, or if the size of the downlight to be replaced changes, it will be formed on the ceiling, etc. For example, it is necessary to increase the diameter of the mounting hole 7 or to provide a new hole separately.

  In addition, in the downlight (refer to Patent Document 2) configured as the downlight main body and the fixture separately described as the prior art, for example, if the shape of the downlight main body is not changed, only the main body is used. It is not necessary to share the fixture by replacing it. However, as described above, the change in the cut-off angle is accompanied by a significant change in the structure of the downlight body. If the shape or size of the light body changes, it will not be possible to divert the fixtures that have already been installed, and the fixtures will need to be replaced. And electrical wiring work is required.

  In view of the above problems, the inventor of the present invention has a cylindrical cone in front of the reflector even when the shape of the cup-like reflector and the positional relationship between the reflector and the light source are fixed. It is found that the cut-off angle θ can be changed by changing the length of the cone and the socket on which the light emitting part of the light source is arranged on the concave side of the reflector. Inventing a unit-type downlight that can be attached to a cylindrical cone selected from a plurality of types having different overall lengths, with the basic component unit mounted and configured as a common component. Accordingly, it is an object of the present invention to provide an adapter that makes it easy to attach and replace parts such as cones to the basic unit in such a unit type downlight.

In order to achieve the above object, the adapter of the unit type downlight according to the present invention has a cup-shaped reflector 21 and a socket 22 in which the light emitting portion 81 of the light source 8 is arranged on the concave surface side of the reflector 21 in the frame 23 The basic component unit 20 formed by mounting is used as a common component, and any one of the cylindrical cones 50 selected from a plurality of types having different elements such as the total length and color can be attached to the basic component unit 20. Used for unit-type downlights,
A cylindrical shape surrounding the concave front side of the reflector 21, and one end detachably attached to the frame 23 of the basic component unit 20 and one end of the cone 50 formed in a common shape. A section 37 is provided (claim 1).

  Here, the cylinder includes not only a cylinder but also a square cylinder.

  In the adapter 30 configured as described above, the mounting portion 37 may be provided with a ridge 42 that is inserted into one end of the cone 50 and covers an inner peripheral surface on one end side of the cone 50 (Claim 2).

  In the adapter 30 having the above configuration, a screw hole formed from the outside of the cylinder toward the ridge 42 and a bolt 38 that is screwed into the screw hole and protrudes toward the ridge 42 are provided. (Claim 3).

  Furthermore, the adapter 30 of the present invention can be selected from a plurality of types having at least different overall lengths as the cone 50, and a locking portion (step 63 in the embodiment) for locking the other end of the cone 50; A unit-type downlight having a cylindrical attachment 6 in which a locking portion 67 for locking the end of the adapter 30 opposite to the mounting side with respect to the basic unit 20 is provided in a predetermined positional relationship. When used, it is preferable that the adapter 30 of the present invention is provided with an extension structure that extends an end opposite to the connection side with the basic component unit 20 (Claim 4).

  The adapter 30 thus provided with the extension structure includes a base adapter 31 provided with a connecting portion to the basic configuration unit 20 and a mounting portion 37 of the cone 50, and a connection between the base configuration unit of the base adapter 31 and the base adapter 31. The extension adapter 32 can be configured to be connected to an end opposite to the side (Claim 5). The total length of the extension adapter 32 may be changed by attaching or detaching the extension adapter 32.

  In this case, another extension adapter 32 may be connected to the extension adapter 32 (claim 6).

  Further, a step portion 34 formed by partially narrowing the cylindrical interior as a configuration of the adapter 30 is provided as a lens mounting portion, and the side opposite to the end portion on the mounting side with respect to the frame is provided with respect to the step portion 34. The cone mounting portion 37 may be provided near the end of the cylinder (Claim 7), and an elastic body biased toward the inside of the cylinder is provided at a plurality of locations, and the elastic body (leaf spring) is provided. 36) The outer periphery of the screen and / or louver may be sandwiched between them (claim 8).

  In the above-described configuration, a vent hole (intake duct 31a) penetrating the thickness of the cylindrical portion may be provided between the lens attachment portion (step portion 34) and the cone attachment portion 37 (claim 9).

  From the configuration of the present invention described above, according to the adapter of the unit type downlight 1 of the present invention, the following remarkable effects can be obtained.

  The basic component unit 20 is provided with one end detachably attached to the frame 23 of the basic component unit 20 and an attachment portion 37 for locking one end of the cone 50 formed in a common shape. The selected cone 50 can be easily attached and detached, and the common adapter 30 can be used regardless of which cone 50 is attached.

  Moreover, when providing the convex part 42 which covers the internal peripheral surface in the one end side of the said cone 50 in the said attaching part 37, it will give an unpleasant glare to irradiation light, or will cause the appearance of irradiation light to be impaired. The diffuse reflection of light at the inner periphery of one end of the cone 50 could be prevented.

  In a configuration in which a screw hole formed from the outside of the cylinder toward the ridge 42 and a bolt 38 screwed into the screw hole and projecting toward the ridge 42 are provided, the bolt 38 is tightened. Only by attaching the tip of the bolt 38 to the outer periphery of the tip of the cone 50, it can be easily attached.

  Further, in the adapter 30 provided with the extension structure that extends the end opposite to the connection side with the basic configuration unit 20, the connection side with the basic configuration unit 20 is adjusted by adjusting the total length of the adapter 30. The projecting length of the cone 50 at the end opposite to that of the cone 50 can always be constant without changing the total length of the selected cone 50, and a locking portion for locking the other end of the cone 50 (in the embodiment). A stepped portion 63) and a cylindrical fitting 6 provided with a locking portion 67 for locking the end of the adapter 30 on the side opposite to the mounting side with respect to the basic component unit 20 at predetermined intervals. When the unit-type downlight is used, a common one can be used as the fixture 6 regardless of the length of the selected cone 50.

  When such an adapter 30 is constituted by the extension adapter 32 connected to the base adapter 31 and the end of the base adapter 31 opposite to the connection side of the basic component unit, the extension adapter 32 is used. When the extension adapter 32 can be connected to another extension adapter 32, the total length can be changed in multiple stages by changing the number of attached extension adapters. The length of the cone 50 that can be selected can be expanded.

  Further, as the configuration of the adapter 30, a step 34 formed by partially narrowing the cylindrical interior is used as a lens mounting portion, and an elastic body such as a leaf spring 36 is provided so that the adapter 30 is interposed. Replacement parts other than the cone 50 can be easily attached to the basic unit 20.

  In the case where a vent hole (intake duct 31a) penetrating the thickness of the cylindrical portion is provided between the position where the lens mounting portion (step portion 34) is formed and the mounting portion 37 of the cone 50, Basically equipped with a light source, etc., in which relatively cool air in the communicating indoor space is introduced to the back side of a wall such as a ceiling where downlights are attached through the vents, thereby generating heat relatively easily The component unit could be cooled.

  Next, embodiments of the present invention will be described below with reference to the accompanying drawings.

  In the following description, in order to facilitate understanding of the adapter 30 of the present invention, the overall configuration of the unit type downlight 1 in which the adapter 30 of the present invention is used is shown. explain.

  FIG. 1 shows an example of the configuration of a unit-type downlight 1 equipped with the adapter of the present invention, and this downlight 1 is adjusted to a predetermined color, diffused / focused state, etc. at a predetermined cut-off angle θ. The downlight main body 2 which irradiates light, and the fixture 6 for attaching this downlight main body 2 in the attachment hole 7 formed in the ceiling etc. as an example here are provided.

[Downlight body]
As shown in FIG. 2, the above-described downlight main body 2 includes a basic configuration unit 20 that constitutes a main component of the downlight main body 2, a cone 50 attached to the basic configuration unit 20, a lens 40, and / or a filter. The adapter 30 of the present invention for attaching the replacement part to the replacement part and the basic component unit 20 is provided.

Basic configuration unit The above-described basic configuration unit 20 includes the cut-off angle θ, the color of light, the light by replacing replacement components such as a lens 40, a cone 50, a filter, and a louver, which will be described later, among the main components of the downlight body 2. In this embodiment, the basic component unit 20 includes a reflector 21, a socket 22, and the socket. And a frame 23 for attaching the reflector 21 and the socket 22 to each other in a predetermined positional relationship, and the components are attached to the frame 23 to form an integral unit.

  In the embodiment shown in FIG. 2, the frame 23 is formed with a chamber for accommodating the socket 22 therein, and here, a substantially cylindrical socket accommodating portion 231 and the lamp 8 with respect to the socket 22 are arranged. When the lamp housing 8 is mounted on the socket 22, the reflector housing portion 233 provided on the mounting side, and the rib-like portion 232 connecting the reflector housing portion 233 and the socket housing portion 231 are provided. The lamp 8 passes through the lamp insertion opening 21 a formed in the central portion of the reflector 21, and the light emitting portion 81 is arranged on the concave surface side of the reflector 21.

  The concave surface of the reflector 21 is mirror-finished by, for example, chrome plating, and the light emitted from the light emitting portion 81 of the lamp 8 is reflected by the concave surface of the reflector 21. Irradiation is performed in a predetermined direction specified by the shape, the arrangement position of the light emitting portion of the lamp 8, and the like.

  In the downlight described as the prior art, in order to change the cut-off angle θ of the downlight, the constituent elements of the basic constituent unit 20 in the downlight 1 of the present invention, such as replacement of a reflector, are changed. Although it is necessary, in the downlight 1 of the present invention, the structure of the basic component unit 20 is changed only by changing the cone 50 by providing the cone 50 described later separately from the reflector 21. The cut-off angle θ can be changed without any change, and as a result, the basic configuration unit 20 including such a reflector 21 can be shared.

  In the illustrated embodiment, the reflector housing portion 233 described above has a substantially cylindrical shape, and the peripheral edge of the cylindrical reflector housing portion 233 on the connection side with respect to the socket housing portion is in the inner circumferential direction. A reflector insertion hole 233a for inserting the reflector 21 is formed at the center of the reflector insertion hole 233a, and the convex surface of the reflector 21 is formed in the reflector insertion hole 233a. It is inserted to bulge toward the side.

  In this way, the inner periphery of the lamp insertion port 21a of the reflector 21 inserted into the reflector insertion hole 233a so as to bulge toward the socket accommodating portion 231 side is a latch attached to the socket accommodating portion 231. It is locked by a tool 231a and fixed at a predetermined position of the frame 23.

  The socket accommodating portion 231 connected to the reflector accommodating portion 233 via the rib-shaped portion 232 is hollow and has a bottomed cylindrical shape for mounting a lamp in the socket accommodating portion 231. A socket 22 is accommodated with the opening side facing the lamp insertion port 21a of the reflector 21 described above.

  A large number of thin plates with the length direction of the socket accommodating portion 231 in the length direction are attached to the outer periphery of the socket accommodating portion 231 in the circumferential direction, and the lamp 8 is connected via the socket accommodating portion 231 by the thin plate. An air-cooling fin 231b that releases heat generated by lighting is formed.

  Thus, the tip of the lamp 8 attached to the socket 22 accommodated in the socket accommodating portion 231 of the frame 23 may be covered with an anti-glare cap (lamp shield) 24 as shown in FIGS. By covering the tip of the lamp 8 with such an anti-glare cap 24, the lamp 8 as a light source is prevented from directly entering the field of view, thereby reducing glare and light emitted directly from the lamp forward. And only the light controlled by the reflector 21 can be emitted.

  In the illustrated embodiment, such an anti-glare cap 24 is attached to the other end of the support bar 25 having one end fixed to a locking tool 231a for locking the inner periphery of the lamp insertion port 21a of the reflector 21. The anti-glare cap 24 is not limited to this method, but can be attached by other methods. The cap 24 is not necessarily provided.

  The reflector housing portion 233 provided on the frame 23 is configured such that an adapter 30 (to be described later) can be attached to the end of the socket housing portion 231 opposite to the connection side.

  As for the configuration enabling the adapter 30 to be attached in this manner, any configuration may be adopted as long as the adapter 30 described later can be attached to the reflector housing portion 233 described above. In this embodiment, as shown in FIGS. 1 and 2, as an example, the outer peripheral portion of the adapter 30 between the two leaf springs 26, 26 provided in the reflector housing portion 233 of the frame 23 is used. The adapter 30 described later is detachably attached to the reflector housing portion 233.

  As shown in FIG. 2, a locking claw 26a formed by bending the leaf spring is formed at the tip of the leaf springs 26, 26. The locking claw 26a is formed on the outer periphery of the adapter 30 described later. The adapter 30 is prevented from falling off by being fitted into the formed locking groove 33.

  In the embodiment described with reference to FIG. 2, the adapter 30 described later is sandwiched and fixed from the outer peripheral side. However, as shown in FIGS. The engagement member 44 provided in the body housing portion 233 and the engagement member 45 provided at the connection side end of the adapter 30 may be configured to be coupled to each other, as shown in the figure. In this example, the adapter 30 is configured such that the connecting side end of the adapter 30 can be inserted into the reflector housing portion 233, and includes a tongue piece 45a protruding in the inner circumferential direction from a part of the opening edge of the adapter 30 in the insertion portion. Side reflector member 233 side having a locking piece 44a arranged at a predetermined interval with respect to the inner periphery of the opening portion in the end opening of the reflector housing portion 233. Locking member 44, and both locking members After the end portion of the adapter 50 is inserted into the end opening of the reflector housing portion 233 so that the positions 4 and 45 are in the position shown in FIG. ), The adapter may be attached to the frame by rotating the frame 23 and the adapter 30 relatively in opposite directions so as to be engaged with each other in the state shown in FIG.

  In this case, a convex portion indicated by reference numeral 46 in FIGS. 7A and 7B is provided at the attachment position of the locking member of the reflector housing portion, and both locking members 44 and 45 are once engaged. After reaching the position, the locking member 45 on the adapter 30 side is locked to the stepped portion, and the frame 23 and the adapter 30 are moved relative to each other in the direction in which the locking of the locking members 44 and 45 is released. For example, rotation in the reverse direction may be restricted.

Adapter The adapter 30 of the present invention is attached to the reflector housing portion 233 of the basic configuration unit 20 formed as described above, and the cone 50 and other replacement parts are attached to the basic configuration unit 20 via the adapter 30. Can be installed. The adapter 30 attached to the reflector housing portion 233 is configured to be variable in its overall length, and by making the overall length variable in this way, regardless of the length of the cone 50 attached to the basic component unit 20, The length of the cone 50 protruding from one end of the adapter 30 can be adjusted to be constant.

  In the embodiment shown in FIGS. 1 to 3, the adapter 30 includes a base adapter 31 for attaching replacement parts such as a cone 50, a lens 40, a filter, and a louver to at least the basic component unit 20. According to the length of the cone 50 attached to the base adapter 31, the extension adapter 32 is attached to the base adapter 31 as necessary so that the total length is variable.

  The embodiment shown in FIGS. 1, 2 and 4 is an example in which the above-described adapter 30 is configured by only the base adapter 31 without attaching such an extension adapter 32. In the embodiment shown in FIG. In this example, the adapter 30 is configured by attaching the extension adapter 32 to the base adapter 31.

  The base adapter 31 for attaching replacement parts such as a cone 50, a lens 40, and a filter, which will be described later, to the basic configuration unit 20 is attached to the reflector housing portion 233 provided in the basic configuration unit 20, and this reflection is performed. Here, the cylindrical portion formed in the body accommodating portion 233 is extended so as to surround the concave front side of the reflector 21, and here, it is formed in a substantially cylindrical shape corresponding to each member.

  In the embodiment shown in FIG. 2, the base adapter 31 is the reflector housing portion 233 of the frame 23 described above, and here is formed in a cylindrical shape having substantially the same diameter as the cylindrical portion corresponding to the cylindrical portion. At the same time, an end portion on the connection side with the reflector housing portion 233 is formed to be slightly smaller in diameter than the inner diameter of the reflector housing portion 233, and this small diameter portion is sealed in the reflector housing portion 233. In such an insertion state, the above-mentioned locking claw 26a provided at the tip of the leaf spring 26 is fitted in a locking groove 33 formed on the outer periphery of the base adapter 31, and the base is fixed. The adapter 31 is fixed.

  However, the connection between the reflector housing portion 233 and the base adapter 31 is not limited to the above example, and may be connected by the method described with reference to FIG. 7, or may be connected by any other method. .

  The base adapter 31 is provided with an attachment structure for attaching a lens 40, a filter, a louver, and the like, which will be described later, on the inner periphery thereof. In this embodiment, the base adapter 31 is made narrower by narrowing the inner diameter thereof. A step portion 34 is formed on the inner periphery, and the lens 40 can be fitted and attached to the step portion 34. In the illustrated example, a peripheral portion of the lens 40 described later is placed on the step portion 34, and By providing presser plates 35 and 35 ′ that sandwich the peripheral edge of the lens with the step portion 34, the lens 40 can be attached to a predetermined position in the base adapter 31.

  The configuration for attaching the lens 40 and the like to the base adapter 31 is not limited to the configuration shown in the drawing, and various configurations can be adopted as long as the lens 40 and the like described above can be attached to the base adapter 31. .

  1 to 3 and 4, reference numeral 36 denotes a leaf spring which is elastic means biased toward the inside of the cylinder of the base adapter 31, and is a fixing for attaching a filter, a louver or the like in the base adapter 31. The leaf springs 36 are provided at a plurality of locations, for example, three locations in the circumferential direction at equal intervals in the illustrated embodiment, and a color filter or a conversion is provided in the space surrounded by the leaf springs 36. A filter such as a filter, a honeycomb louver, and other louvers are inserted, and the outer periphery of the filter or louver is sandwiched between a plurality of leaf springs 36 and attached.

  Thus, in the downlight provided with the adapter 30 of the present invention, the cone 50 can be attached to the base adapter 31 without attaching a lens, various filters, louvers or the like to the cone 50 described later. The configuration of the above can be made relatively simple, and even if the size of the cone 50 is changed, it is possible to use replacement parts having a common standard.

  In this way, the base adapter 31 to which the lens 40, various filters, louvers and the like are attached is attached to the basic configuration unit 20 described above, so that the concave front surface of the reflector 21 is attached to the base adapter 31. 40, a filter, a louver, and the like, and a space outer periphery between the reflector 21 and the lens 40, the filter, and the louver is surrounded by a cylindrical base adapter 31.

  The base adapter 31 is configured so that a cone 50 to be described later can be attached. In the illustrated embodiment, the above-described step portion 34 as an attachment portion of the lens 40 and the basic component unit 20 are provided. The cone attachment part 37 is formed in the predetermined position between the edge parts on the opposite side to the attachment side with respect to (refer FIG. 3).

  The cone attaching portion 37 may have any configuration as long as it can attach a small-diameter side end portion of a cone 50 to be described later to the base adapter 31. However, according to the embodiment shown in FIGS. In this case, a convex strip 42 projecting downward is formed in the cone mounting portion 37 in a circumferentially continuous cylindrical shape, and this convex strip 42 can be inserted into a small-diameter side end portion of a cone 50 described later. At the same time, a concave portion 312 is formed between the convex portion 42 and the cylindrical portion of the base adapter 31 to accommodate an engagement bent portion 51 provided at the narrow-diameter side end portion of the cone 50, which will be described later. Then, a screw hole penetrating the thickness of the cylindrical portion of the base adapter 31 is formed, and a bolt 38 is screwed into the screw hole from the outer peripheral side of the base adapter 31 toward the inner peripheral side. Small diameter of the cone 50 By causing butted to the engaging bent portion 51 formed at an end portion, it is attached to the bent portion 51 of the cone 50 in position within the base adapter 31.

  Since the engagement bent portion 51 whose outer periphery is bent outwardly in the anti-center direction is formed at the small diameter side end portion of the cone 50, when the light from the light source hits this portion, it is irregularly reflected. Thus, the irradiation light emitted from the luminaire includes a component that makes the irradiation light feel uncomfortable or impairs the aesthetic appearance of the irradiation light. The portion of the engaging bent portion 51 is shielded from the light source 8 so as to prevent the irregular reflection of the light generated at the engaging bent portion 51.

  Further, the base adapter 31 is extended to the large-diameter side end opposite to the side where the base adapter 31 is connected to the basic component unit 20, and the outer periphery of the cone 50 attached to the cone attaching portion 37 is provided. A cylindrical extension adapter 32 can be attached in correspondence with the surrounding cone 50 and base adapter 31 (see FIG. 3).

  The extension adapter 32 may be attached to the base adapter 31 as long as the extension adapter 32 is detachably connected. However, in the embodiment shown in FIG. Openings 39 are formed at predetermined intervals in the circumferential direction at the end of the bottom edge 311 located near the end opposite to the connection side of the basic component unit 20, and the base adapter 31 of the extension adapter 32 is formed. A small-diameter portion that can be inserted into the base adapter 31 is formed at an end of the base adapter 31 and an engagement piece 32a protruding in the outer peripheral direction is provided on the outer periphery of the small-diameter portion. The extension adapter 32 is attached to the base adapter 31 by inserting the small-diameter portion 32 and fitting the engagement piece 32a into the opening 39. And it is configured to allow.

  The extension adapter 32 is connected to the base adapter 31 so that another extension adapter 32 can be connected to the extension adapter 32 at the end opposite to the connection side to the base adapter 31. You may provide the opening 39 similar to having provided (refer FIG. 6).

  2 and 3, reference numeral 31 a denotes an intake duct provided in the above-described base adapter 31. In the illustrated example, the base adapter 31 is provided between the attachment position of the lens 40 with respect to the base adapter 31 and the cone attachment portion 37. A slit penetrating the thickness of 31 was provided, and this was used as the aforementioned intake duct 31a.

  Thus, by providing the intake duct 31a that penetrates the thickness of the base adapter 31 at the aforementioned position, when the downlight 1 of the present invention is installed in the mounting hole 7 formed in the ceiling or the like, the indoor side is cooled Air can be introduced as cooling air to the back side (ceiling back side) of the wall surface via the intake duct 31a, and the downlight 1 can be cooled on the back side of the wall surface by introducing the cooling air.

Lens, Filter, and Louver The lens 40, filter, and louver that are attached to the basic unit 20 through the base adapter 31 cover the front surface of the reflector 21 by being attached to the base adapter 31, and the reflector A diffusion lens (diffuse lens) for diffusing light and creating soft light as an example of such a lens 40, which has a predetermined effect on the light of the lamp 8 reflected through the lamp 21. It is possible to select a lens according to the application from a focusing lens (focusing lens) that adjusts the contour of light by adjusting the focus of light, a spread lens that refracts light and irradiates an elliptical light distribution, and the like.

  Further, in place of these lenses 40 or together with these lenses 40, the stepped portion 34 as the lens mounting portion and the leaf spring 36 forming the filter and louver mounting portion are assembled in a hexagonal column (honeycomb pattern). Honeycomb louvers and other louvers that prevent light sources from directly entering the field of view from lighting equipment, color filters that are colored transparent sheets that add color to light, and conversion that changes the light color (color temperature) of the light source A filter such as a filter can be selected and attached. Depending on the selected lens 40, the filter, the louver, or a combination thereof, the color and diffusion of the light emitted even with the downlight sharing the basic unit 20 It is possible to assemble with different states and the like.

  These lenses 40, filters, and louvers are preferably shared in size so that any of them can be selected and attached to the aforementioned stepped portion 34 or leaf spring 36. In the light, the shape and size of the narrow side end portion, that is, the bent portion, of the cone 50, which will be described later, are commonly used as the same shape and the same size, the basic unit 20 is shared, and the extension adapter 32 is provided. Since the total length of the adapter 30 is made variable by the attachment, it can be made common regardless of the length of the cone 50 for selecting the base adapter 31. Therefore, the lens and filter attached to the base adapter 31 can be used. , Louvers, etc. can be shared regardless of the change in the cut-off angle θ.

Cone As described above, the cone 50 attached to the basic component unit 20 via the adapter 30 is substantially cylindrical here, and reflects or irradiates light emitted from the basic component unit 20 on its inner peripheral surface. 1 to FIG. 3, the cone 50 is relatively narrowly formed at one end on the small diameter side and on the one end. On the other hand, it is provided with a large-diameter end at the other end formed in a large diameter, and here, it is formed as a substantially truncated cone-shaped cylindrical body.

  The above-described downlight described as the prior art (see FIG. 7) is configured so that the reflection angle of the light generated by the light source is controlled only by the reflector, and therefore the cut-off of the downlight is performed. If the angle θ is to be changed, it has been necessary to replace it with a separate downlight having reflectors having different shapes and sizes. However, in the downlight 1 of the present invention, the basic configuration unit 20 is provided. A cone 50 is provided separately from the reflector 21, and any one cone selected from a plurality of types of cones 50 having different overall lengths is used as the cone 50 in combination with the basic component unit 20. The configuration is such that the cut-off angle θ can be changed without changing the body 21.

  One end on the small diameter side of the cone 50 is formed with a bent portion 51 formed by slightly bending the periphery of the end portion in the outer peripheral direction as described above, and the end on the large diameter side on the other end side. The portion is configured to be able to be locked to a stepped portion 63 formed on the fixture 6 to be described later by bending the end edge to the outer peripheral side.

  Preferably, the large-diameter side end portion is bent approximately 90 ° with its peripheral portion having an R in the outer peripheral direction as shown in FIGS. 4 to 6 and perpendicular to the center line direction of the downlight 1. It is preferable to provide a directional outer flange surface 52. By forming such an outer flange surface 52, light from the light source 8 is not reflected by the edge of the cone 50, and such light enters the field of view. The unpleasant glare felt by this can be reduced.

  In the embodiment of FIGS. 4 to 6, the peripheral edge of the cone bent in the outer circumferential direction as described above is further bent in a direction parallel to the main body portion (upward in the figure) to form a U-shaped cross section. In the figure, the upward end is locked to a stepped portion 63 formed in the fixture 6.

  The inner peripheral surface of the cone 50 can be made to reflect the light passing through the lens 40 as it is, for example, by finishing it into a silver mirror surface by chrome plating or the like. By using a mirror surface colored yellow), the light passing through the lens may be colored and reflected corresponding to the color colored on the inner peripheral surface. For example, the above-mentioned champagne cold color is used. In some cases, the light emitted by the downlight 1 can be changed to a warm yellow color.

  Further, the inner peripheral surface of the cone 50 may be colored black so that the light irradiated to the inner peripheral surface of the cone 50 out of the light passing through the lens 40 may be absorbed. The cones 50 having different states may be prepared, and any of the cones selected from the cones 50 may be attached so that various changes can be applied to the light emitted from the downlight 1. .

  The length of the cone 50 is selected in accordance with the cut-off angle θ given to the downlight 1. When the opening diameters at both ends of the cone 50 are the same, the cut-off angle θ increases as the length of the cone 50 increases. (The irradiation range becomes narrower), and the cut-off angle θ decreases (the irradiation range becomes wider) as the entire length of the cone 50 becomes shorter (see FIGS. 4 to 6).

  Therefore, in the downlight of the present invention, as shown in FIG. 1 and FIG. 3, or FIGS. 4 to 6, the opening diameters at the small diameter side end and the large diameter side end are the same, By selecting and installing any one cone 50 from a plurality of different cones 50, the above-mentioned basic configuration unit 20 is made common, and the base adapter 31 and the fixture 6 described later are made common, Accordingly, the diameter of the mounting hole 7 formed in the ceiling is also common, and the cut-off angle θ of the downlight 1 of the present invention can be changed only by selecting the cone 50.

  In the embodiment shown in FIGS. 1 and 3, a cone 50 having two types of lengths is prepared, and the cut-off angle is 30 ° (FIGS. 1 and 2) or depending on which length of the cone 50 is selected. This is an example in which the angle can be set to 40 ° (FIG. 3). In the embodiment shown in FIGS. 4 to 6, three types of cones 50 having different lengths are prepared, and any one of these cones 50 is selected. In this example, the cut-off angle can be set to 30 ° (FIG. 4), 40 ° (FIG. 5), or 50 ° (FIG. 6) depending on the selection.

  It should be noted that, regardless of the length of the cone 50 attached to the adapter 30, the length of the cone 50 protruding from the end of the adapter 30 opposite to the connection side with respect to the basic component unit 20 is always constant. In this embodiment, such an adapter 30 is constituted by a base adapter 31 and an extension adapter 32, and whether or not the extension adapter 32 is attached to the base adapter 31, Alternatively, the total length of the adapter 30 can be changed depending on the number of attachments.

  In the illustrated embodiment, among the selectable cones 50, when the cone having the shortest overall length is attached, the large-diameter side end of the cone 50 and the end of the base adapter 31 (connection between the basic component unit 20). The length of the cone 50 to be selected is set so that the distance between the two is constant even when a long cone 50 is attached to the distance. Correspondingly, the extension adapter 32 is connected to the above-mentioned base adapter 31 and, if necessary, another extension adapter 32 is connected to the extension adapter 32 (see FIG. 6). The adapter is configured to be adjustable so that the distance between the adapter end portions is always constant.

As described above, the downlight body 2 configured by attaching the cone 50 and the lens 40 to the basic configuration unit 20 through the adapter 30 and, if necessary, replacement parts such as a filter and a louver, is attached to the ceiling or the like. It is fixed via the fixture 6 in the formed mounting hole 7.

  As shown in FIG. 2, the fixture 6 includes a cylindrical main body 61 that opens at both ends, and an outward flange-like frame body 62 formed at an opening edge on one end side of the main body 61. 6 is inserted into the mounting hole 7 formed in the ceiling or the like with the end opposite to the side on which the frame 62 is formed as the tip side, and the frame 62 provided on the rear end side. Is inserted to a position where it contacts the opening edge, and the fixture 6 can be fixed in the attachment hole 7 in this state.

  Thus, in order to enable the fixture 6 to be fixed in the attachment hole 7, the fixture 6 can be provided with a clamping body 64 that clamps the ceiling plate with the frame body 62 (see FIG. 4).

  In the embodiment shown in FIG. 4, the sandwiching body 64 is composed of a metal plate or the like protruding from the outer periphery of the fixture 6, and a plurality of grooves are formed in the circumferential direction on the outer periphery of the fixture 6. The outer periphery of the fixture has a sawtooth cross section as shown in FIG. 4, and once (upper end in the figure) of the clamping body 64 is locked in one of the grooves, it is formed at the intermediate portion of the clamping body 64. The front end side of the bolt 65 protruding from the inner peripheral side of the fixture 6 toward the outer peripheral side is screwed into the screw hole, and the bolt 65 is tightened to change the inclination angle of the holding body 64 to be clamped. By adjusting the distance between the other end of the body 64 (the lower end in the figure) and the frame body 62, the ceiling plate can be clamped between the frame body 62 and the lower end of the leaf spring 64.

  In addition, the structure which fixes the said fixture 6 in the attachment hole 7 formed in the ceiling etc. is not limited to embodiment of illustration, Various structures can be employ | adopted, for example, the fixture 6 is directly attached to the attachment hole. 7 may be attached by screwing or the like.

  The inner periphery of the end of the fixture 6 on the side provided with the frame body 62 is provided with a stepped portion 63 for locking the bent portion formed at the large-diameter side end of the cone 50 described above. When the downlight main body 2 is inserted into the main body 61 of the fixture 6 from the end of the frame body 62 on the side of the frame 6, the bent portion provided at the end of the large diameter side of the cone 50 is locked to the stepped portion 63. Thus, the insertion position of the downlight body 2 with respect to the attachment 6 is determined.

  On the inner periphery of the fixture 6, when the downlight body 2 is inserted into the fixture 6 to the aforementioned position, an end of the adapter 30 opposite to the attachment side with respect to the basic component unit 20 is disposed. A locking portion 67 protruding in the inner circumferential direction is provided at the position where the downlight main body 2 inserted into the fixture 6 is placed at a predetermined position in the fixture 6. It is configured to be locked.

  In the illustrated embodiment, a plate spring 66 disposed along the inner wall from the end on the formation side of the frame 62 toward the other end is provided, and the upper end portion of the plate spring 66 in the figure is the inner side. The curved portion was curved so as to bulge in the circumferential direction, and this curved portion was used as a locking portion 67 at the end of the adapter 30.

  In addition, the structure of such a latching | locking part is not limited to embodiment of illustration, As long as it is a structure which can latch the edge part of the above-mentioned adapter 30, you may employ | adopt another structure.

In the downlight 1 of the present invention configured as described above, the lens 40 or the lens 40 is used instead of the lens 40 according to the diffusion or focusing state of the light, the light color, other action applied to the light, or the like. A filter and louver are selected and attached to the base adapter 31 together with the lens 40, and the length of the cone 50 is set according to a desired cut-off angle θ, and the inner peripheral surface of the cone 50 is set according to coloring applied to light. A color is selected and the selected cone 50 is attached to the base adapter 31.

  When it is necessary to attach the cone 50 in relation to the length of the selected cone 50, the extension adapter 32 is attached in advance to the base adapter 31, and thus the lens 40, filter, louver, cone 50, etc. By attaching the base adapter 31 to which the basic structure unit 20 is attached, the downlight main body 2 that irradiates light colored in a desired color at a desired cutoff angle θ is completed.

  Accordingly, for example, the basic unit 20 of the downlight body 2 is manufactured in advance, and a plurality of selected parts such as a lens 40, a filter, a louver, and a cone 50 to be combined therewith are prepared. Thus, the downlight 1 having the required characteristics can be easily obtained simply by attaching the replacement parts corresponding to the basic unit 20 based on the required functions of the downlight 1.

  As described above, the cone 50 selected based on the difference in the cut-off angle θ or the like is configured such that the diameters at both ends are the same among the different types of cones 50 and only the length and the color are different. Even if any cone 50 is selected and attached, it can be attached to the basic unit 20 using the common base adapter 31, and any cone 50 is selected and assembled. Even if it is a case, the diameter of the lower end part of the obtained downlight main body 2 becomes a common thing.

  Therefore, regardless of the type of cone 50 to be selected, the above-described fixture 6 for locking the downlight body 2 formed in this way into the mounting hole 7 formed in the ceiling is also made common. Is possible.

  Further, as a result of the common use of the fixture 6 described above, the size of the mounting hole 7 formed in the ceiling can also be made common, and the ceiling can be used even between downlights having different cut-off angles θ. It is not necessary to change the size of the mounting hole 7 formed in the same manner.

  The downlight main body 2 configured as described above is inserted into the main body 61 of the fixture 6 with the basic configuration unit 20 side as the distal end, and the inner peripheral edge of the end of the fixture 6 on the side where the frame body 62 is formed. When the large-diameter outer peripheral edge of the cone 50 is pushed into the stepped portion 63 formed in the above-mentioned step 63, the aforementioned locking portion 67 formed by a leaf spring or the like provided on the inner periphery of the fixture 6 is In addition, the outer peripheral edge of the large diameter side end of the cone 50 is provided on the fixture 6 while being in contact with the frame 23 of the basic unit 20 at the time of insertion and pressed in the outer circumferential direction to allow the passage of the downlight body 2. When the adapter 63 is inserted to the position locked by the stepped portion 63, the end of the adapter 30 described above (if the adapter 30 is composed of only the base adapter 31, the end of the base adapter 31 and the extension adapter 32 are provided. In case of extension End of the descriptor 32) is positioned above through the locking portion 67.

  By passing through the end of the adapter 30, the pressing force applied to the locking portion 67 pressed in the outer peripheral direction by the outer periphery of the adapter 30 is released, and the locking portion 67 returns to the inner peripheral side of the fixture 6. The end of the adapter 30 is locked.

  As described above, the adapter 30 is formed such that its overall length is variable by attaching or detaching the extension adapter 32 or by the number of the extension adapters 32 attached, and the projection length of the cone 50 from the end of the adapter 30 is constant. Therefore, regardless of the length of the selected cone 50, the end portion of the adapter 30 is reliably locked by the locking portion 67 even when the common fixture 6 is used.

  In this way, the downlight body 2 is locked in a predetermined position in the fixture and fixed in the attachment hole 7 formed in the ceiling, and the attachment of the downlight 1 to the ceiling or the like is completed.

Sectional drawing of the downlight which shows one Embodiment of this invention. Sectional drawing which shows the decomposition | disassembly state of the downlight of FIG. Sectional drawing of the adapter and cone which show the example of attachment of the cone from which length differs. Sectional drawing of the downlight (cut-off angle of 30 degrees) which shows another embodiment of this invention. Sectional drawing of the downlight (cut-off angle of 40 degrees) which shows the example of attachment of cone from which length differs. Sectional drawing of the downlight (cut-off angle of 50 degrees) which shows the example of attachment of cone from which length differs. It is explanatory drawing of the connection structure between the reflector accommodating part 233 and the base adapter 31, (A) is a state before latching, (B) is a latching state, (C) is cc line sectional drawing of (B). is there. Sectional drawing which shows the principal part which shows the conventional downlight.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Downlight 2 Downlight main body 6 Attaching tool 61 Main body 62 Frame body 63 Step part 64 Nipping body 65 Bolt 66 Leaf spring 67 Locking part 7 Mounting hole 8 Light source (lamp)
81 Light Emitting Unit 20 Basic Configuration Unit 21 Reflector 21a Lamp Insertion Port 22 Socket 23 Frame 231 Socket Housing Portion 231a Locking Tool 231b Air Cooling Fin 232 Rib-shaped Portion 233 Reflector Housing Portion 233a Reflector Insertion Hole 24 Anti-Glare Cap 25 Support Rod 26 Leaf spring 26a Locking claw 30 Adapter 31 Base adapter 31a Intake duct 311 Bottom edge 312 Recessed portion 32 Extension adapter 32a Engagement piece 33 Locking groove 34 Step part 35 Presser plate 35 'Locking bracket 36 Plate spring 37 (cone) attachment Portion 38 Bolt 39 Opening 40 Lens 42 Projection 44 Locking member (Reflector housing portion 233 side)
44a Locking piece 45 Locking member (Adapter 30 side)
45a Tongue piece 46 Convex part 50 Cone 51 Bent part 52 Outer flange surface

Claims (9)

A basic component unit formed by attaching a cup-shaped reflector and a socket on the concave surface side of the reflector to which the light emitting part of the light source is attached to the frame is used as a common component, and the basic component unit is selected from a plurality of types. Used for unit-type downlights that can be fitted with any one of the cylindrical cones
A cylindrical shape surrounding the front of the concave surface of the reflector, and one end detachably attached to the frame of the basic configuration unit, and an attachment portion for locking one end of the cone formed in a common shape Unit type downlight adapter.   2. The unit-type downlight adapter according to claim 1, wherein the attachment portion includes a protrusion that is inserted into one end of the cone and covers an inner peripheral surface on one end side of the cone.   3. A unit mold according to claim 2, further comprising a screw hole formed toward the ridge from outside the cylindrical shape, and a bolt that is screwed into the screw hole and protrudes toward the ridge. Downlight adapter. The cone can be selected from a plurality of types having at least different overall lengths, and an attachment portion for engaging the other end of the cone and an end portion of the adapter opposite to the attachment side with respect to the basic component unit are engaged. Used for the unit type downlight provided with a cylindrical fixture provided inside with a locking portion in a predetermined positional relationship,
The adapter of the unit type | mold downlight of any one of Claims 1-3 provided with the extension structure which extends the edge part on the opposite side to the connection side with the said basic structural unit.   A base adapter provided with a connecting portion for the basic configuration unit and a mounting portion for the cone, and an extension adapter connected to an end of the base adapter opposite to the connection side with the basic configuration unit. The adapter of the unit type downlight of Claim 4.   6. The unit type downlight adapter according to claim 5, wherein another extension adapter can be connected to the extension adapter.   A step portion formed by partially narrowing the inside of the cylindrical shape is provided as a lens attachment portion, and the cone portion is positioned closer to the end portion opposite to the end portion on the attachment side with respect to the frame. 7. The unit type downlight adapter according to claim 1, further comprising an attachment portion.   The elastic body urged toward the inside of the cylindrical shape is provided at a plurality of locations, and the outer periphery of the screen and / or louver can be sandwiched between the elastic bodies. Unit type downlight adapter.   The adapter for a unit type downlight according to any one of claims 1 to 8, wherein a vent hole penetrating between an inner periphery and an outer periphery of the cylindrical portion is provided between the lens attaching portion and the attaching portion of the cone.

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