JP2005332683A - Lighting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus preventing falling of a shade. <P>SOLUTION: The lighting apparatus 1 is constructed of an apparatus main body 2, a shade 13, a shade attaching and detaching mechanism 14, and a lid 20 or the like. The shade attaching and detaching mechanism 14 is constructed of an engaging member 15 and an engaged member 16 for engaging with the engaging member 15. The engaging member 15 is installed on the apparatus main body 2 and the engaged member 16 is installed on the shade 13. The engaging member 15 is constructed of a case 15a, a release button 15b protruding from the lower face of the case 15a, and an engaging pawl 15c or the like installed projectably and retractably on the two side faces opposed to the case 15. The engaged member 16 is provided with an engaging groove 16d for engaging with the engaging pawl 15c. The shade 13 is fitted to the apparatus main body 2 by engaging the engaging pawl 15c of the engaging member 15 with the engaging groove 16d of the engaged member 16. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a lighting apparatus including a shade.

  Conventionally, a lighting fixture may be provided with a shade for changing a light distribution or light color in addition to a fixture body provided with a fluorescent lamp. In the case of a lighting fixture equipped with such a shade, when replacing the fluorescent lamp, it is necessary to remove the shade from the fixture main body and to replace the fluorescent lamp and then attach the shade to the fixture main body again.

In order to easily attach / detach the shade to / from the instrument body, an attachment / detachment mechanism using an attachment part attached to the instrument body side, a cap attached to the attachment part, and the like has been proposed (see Patent Document 1). Specifically, in a state where the attachment portion is inserted into the hole of the shade, the support protrusion and the pin of the attachment portion are inserted into the vertical groove provided inside the cap, and the cap is rotated. Accordingly, the support protrusion and the pin are fitted into the support groove and the locking groove communicated with the vertical groove, respectively, and the shade is attached to the instrument body. Further, when removing the shade, the cap is rotated in the direction opposite to the mounting direction, the support protrusion and the pin are positioned in the longitudinal groove, and the cap is pulled out from the mounting portion.
Japanese Utility Model Publication No. 5-11213

  However, since the cap is exposed on the surface of the shade, the cap rotates in the direction opposite to the mounting direction due to any cause, and the shade may come off from the instrument body and the shade may fall. Also, when removing the instrument body from the shade, it is necessary to rotate the cap in the direction opposite to the mounting direction to align the support protrusions and pins with the vertical grooves, but this alignment is difficult. The shade cannot be easily removed from the instrument body. The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a lighting apparatus that can prevent a sudden drop of a shade and can easily remove the shade.

  According to the first aspect of the present invention, there is provided an instrument body provided with a lamp; a shade covering at least a part of the instrument body; an engaging portion provided at a central portion of the instrument body; An engaged portion provided in the central portion of the shade; a release means provided in the central portion of the instrument main body or the shade so as to be operable from the outside, and releasing the engagement between the engaging portion and the engaged portion; And a safety mechanism which is movably provided on the opposite side of the shade to the main body side of the shade, and which can be covered and exposed to the release means.

  In the present invention, the shade may be a so-called sealed form in which a sealed space is formed by the instrument body and the shade, or an open form in which the space between the instrument body and the shade and the outside communicate with each other. Further, the shape of the shade and the instrument body may be circular or polygonal. In addition, the “movable” of the safety mechanism may be any form such as rotation, sliding and swinging. In short, the safety mechanism can be operated from the opposite side (ie, the surface side) of the shade body. What is necessary is just to be provided in.

  The lamp may be, for example, a quadrangular shape, an annular shape, a triangular shape, or a polygonal shape. The arc tube of the lamp may be a double tube shape or a multiple tube shape. Furthermore, the lamp may be a straight tube in addition to the ring.

  According to the first aspect of the present invention, the safety mechanism and the release means are separate members, and the release means can be covered by the safety mechanism, so that the user of the lighting fixture does not touch the release means inadvertently. Therefore, unexpected shade drop can be prevented. In addition, since the release means is operated after the safety mechanism is moved, it is possible to easily attach and detach the shade.

  The invention according to claim 2 is an instrument main body provided with a lamp; a shade covering at least a part of the instrument main body; an engaging portion provided in a central portion of the instrument main body; An engaged portion provided in the central portion of the shade; a release means provided in the central portion of the instrument main body or the shade so as to be operable from the outside, and releasing the engagement between the engaging portion and the engaged portion; A lighting device comprising: a safety mechanism which is detachably provided on the opposite side of the device body side of the shade and which can be covered and exposed with the release means; According to the second aspect of the present invention, the safety mechanism and the release means are separate members, and the release means can be covered by the safety mechanism, so that the user of the lighting fixture does not touch the release means inadvertently. Therefore, unexpected shade drop can be prevented. In addition, since the release means is operated after the safety mechanism is moved, it is possible to easily attach and detach the shade.

  The invention according to claim 3 is characterized in that the instrument body is provided with a tilt prevention mechanism for preventing the tilt of the shade when the engaging portion and the engaged portion are engaged. It is a lighting fixture. According to invention of Claim 3, it can prevent that a shade tilts by the inclination suppression mechanism.

  The invention according to claim 4 is characterized in that the instrument body is provided with a pressing mechanism that presses the shade to the side opposite to the instrument body side in a state where the engaging portion and the engaged portion are engaged. Item 4. The lighting fixture according to any one of Items 1 to 3. According to the fourth aspect of the present invention, since the shade is pressed by the pressing mechanism to the side opposite to the instrument main body side, the operator only releases the engagement between the engaging portion and the engaged portion. The shade can be easily removed from the instrument body.

  According to a fifth aspect of the present invention, the shade includes a raised portion on the back side of the shade, and the engaged portion is provided on the raised portion. It is a lighting fixture of description. According to the fifth aspect of the present invention, since the engaged portion is provided in the rising portion, the strength of the shade near the engaged portion is increased, and the crack of the shade can be suppressed.

  According to the first and second aspects of the invention, it is possible to prevent unexpected shade drop without inadvertently touching the release means. In addition, it is possible to easily attach and detach the shade. According to invention of Claim 3, it can prevent that a shade tilts. According to invention of Claim 4, a shade can be easily removed from an instrument main body. According to invention of Claim 5, the crack of a shade can be suppressed.

  Hereinafter, embodiments will be described. 1 and 2 are schematic perspective views of the lighting fixture according to the present embodiment, FIG. 3 is a schematic vertical sectional view of the lighting fixture according to the present embodiment, and FIG. FIG. 5 is a schematic perspective view of an engaging member and its periphery according to the present embodiment, and FIG. 6 is a schematic view of a shade and its periphery according to the present embodiment. FIG. 7 is a schematic perspective view of the engaging member according to the present embodiment and its periphery, and FIG. 8 is a schematic perspective view of the shade according to the present embodiment and its periphery. It is.

  As shown in FIGS. 1 to 6, the lighting fixture 1 includes a fixture body 2. The instrument main body 2 includes a box-shaped chassis 3 having an internal space. An opening 3 a is formed on the upper surface of the chassis 3, and an opening 3 b and the like are formed on the lower surface of the chassis 3. Specifically, the openings 3a and 3b are formed in a substantially circular shape, and are formed in the central portion of the chassis 3 so as to face each other.

  The chassis 3 is locked to an adapter 5 attached to the hook ceiling 4. The hook ceiling 4 is attached to the ceiling surface. The adapter 5 supplies power to the instrument body 2 and supports the instrument body 2. The adapter 5 includes a case 5a, a release button 5b protruding from the lower surface of the case 5a, a locking claw 5c protruding from the side surface of the case 5a, and the like.

  The adapter 5 is configured such that the locking claw 5c is accommodated in the case 5a when the release button 5b is pressed and the locking claw 5c protrudes from the case 5a when the release button 5b is released. .

  In order to lock the chassis 3 to the adapter 5, the adapter 5 is inserted into the openings 3a and 3b of the chassis 3 while the release button 5b is pressed, and the release button 5b is released. Thereby, the locking claw 5 c is hooked on the lower surface of the chassis 3, and the chassis 3 is locked to the adapter 5.

  A lighting circuit 6 for lighting a fluorescent lamp 7 to be described below is arranged inside the chassis 3. The adapter 5 and the lighting circuit 6 are electrically connected. Electric power is supplied to the lighting circuit 6 by electrically connecting the adapter 5 and the lighting circuit 6.

  Below the chassis 3, two large and small fluorescent lamps 7 formed in a square shape are arranged. A base 8 is attached to the center of the side 7 a of the fluorescent lamp 7. The fluorescent lamp 7 is held by a connector 9 and a lamp holder 10.

  The connector 9 is provided so that the tip portion protrudes from an opening formed in the lower surface of the chassis 3, and the base 8 of the fluorescent lamp 7 is attached to the connector 9. The fluorescent lamp 7 and the lighting circuit 6 are electrically connected via a connector 9. By electrically connecting the fluorescent lamp 7 and the lighting circuit 6, predetermined power can be supplied to the fluorescent lamp 7, and the fluorescent lamp 7 can be turned on.

  The lamp holder 10 is attached to the lower surface of the chassis 3. The lamp holder 10 holds the side part 7b facing the side part 7a, but does not hold the center part of the side part 7b. Specifically, the lamp holder 10 holds the vicinity of the bent portion of the side portion 7b. In addition, the lamp holder 10 can hold | maintain the part of the fluorescent lamp 7 other than the overlapping part, when the annular | circular shaped fluorescent lamp which made the length from the side part 7a to the side part 7b a diameter is piled up on the fluorescent lamp 10. It does not need to be in the vicinity of the bent portion of the side portion 7b.

  A connector 12 for connecting a baby ball 11 as a night light and other fluorescent lamps (not shown) is disposed on the lower surface of the chassis 3.

  A rectangular shade 13 is disposed below the chassis 3. A raised portion 13 a that rises from the surrounding portion is formed at the center of the back side of the shade 13. A rectangular window portion 13b is formed in the rising portion 13a.

  The shade 13 is detachably attached to the shade 13 by a shade attaching / detaching mechanism 14. The shade attaching / detaching mechanism 14 includes an engaging member 15 provided with an engaging portion, and an engaged member 16 for engaging with the engaging member 15 provided with an engaged portion.

  The engagement member 15 is attached to an attachment plate 18 attached to the center portion of the chassis 3 by a screw 17. The engaging member 15 includes a case 15a, a release button 15b protruding from the lower surface of the case 15a, an engaging claw 15c that is an engaging portion protruding from two opposite side surfaces of the case 15b, and the like. ing.

  The engaging member 15 is configured such that when the release button 15b is pressed, the engaging claw 15c is accommodated in the case 15a, and when the release button 15b is released, the engaging claw 15c protrudes from the case 15a. ing. The case 15 a is formed in a substantially quadrangular prism shape, but the corners are chamfered for alignment with the engaged member 16. The upper surface of the engaging claw 15c is substantially horizontal, and the lower surface of the engaging claw 15c is inclined upward.

  The engaged member 16 is attached to the edge of the window portion 13b. That is, the engaged member 16 is attached to the raised portion 13a. The engaged member 16 includes a member 16a and a member 16b. A hole 16c corresponding to the shape of the case 15a is formed in the engaged member 16 so that the engaging member 15 can be inserted inside. In addition, engagement grooves 16 d for engaging the engagement claws 15 c are formed at four positions on the inner surface of the engaged member 16.

  The mounting plate 18 includes a plurality of protruding pieces 18a (tilt prevention mechanisms) formed by bending a part of the mounting plate 18 toward the engaging member 15 side. The projecting piece 18a prevents the shade 13 from tilting, and the corner of the engaged member 16 is outside the engaging member 15 and in a state where the engaging member 15 and the engaged member 16 are engaged. It is formed in a position that comes into contact with the outer peripheral surface of the. In addition, although the protruding piece 18a is formed so that the protruding piece 18a partially contacts the outer peripheral surface of the engaged member 16, the protruding piece 18a contacts the entire outer peripheral surface of the engaged member 16. The protruding piece 18a may be formed. In addition to the projecting piece 18a, for example, as shown in FIGS. 7 and 8, a boss 15d protruding toward the shade 13 is formed at the corner of the engaging member 15, and the boss is formed at the corner of the engaged member 16. An inclination of the shade 13 may be prevented by forming a hole 16e that fits with 15d and fitting the boss 15d with the hole 16e. Here, it is preferable that a taper is formed in the boss 15d and the hole 16e so as to be accurately fitted.

  A leaf spring 19 (pressing mechanism) that presses the shade 13 to the side opposite to the instrument body 2 side in a state where the engaging claw 15c and the engaging groove 16d are engaged is attached to the mounting plate 18. . When attaching the shade 13 to the instrument body 2, the leaf spring 19 is bent by the engaged member 16, so that the shade 13 and the engaged member 16 are moved away from the instrument body 2 side by the elastic force of the leaf spring 19. Pressed. In addition to the leaf spring 19, the shade 13 can be pressed with, for example, a sponge.

  A rectangular lid 20 (safety mechanism) that can cover and expose the release button 15b is disposed on the side of the shade 13 opposite to the instrument body 2 side. In the present embodiment, the lid 20 is attached to the lower surface of the engaged member 16 so as to cover the lower surface of the engaged member 16. The lid 20 is configured to open and close by sliding. The release button 15b is exposed by opening the lid 20, and the release button 15b is hidden by closing the lid 20. As long as the release button 15b can be covered, the lid 20 may be a screw-in type or a circular shape.

  Hereinafter, attachment / detachment of the shade 13 will be described. FIG. 9 is a view schematically showing an operating state of the shade attaching / detaching mechanism 14 when the shade 13 according to the present embodiment is attached, and FIG. 10 is a shade attaching / detaching mechanism when the shade 13 according to the present embodiment is detached. It is the figure which showed the 14 operating state typically.

  When attaching the shade 13 to the instrument body 2, the lid 20 is opened, and the engagement member 16 and the engagement member 15 are aligned so that the engagement member 15 is inserted inside the engagement member 16. And push up the shade 13 as shown in FIG. Then, the engagement claw 15c enters the engagement groove 16d, and the engagement claw 15c and the engagement groove 16d are engaged. Thereby, the shade 13 is attached to the instrument main body 2. Finally, the lid 20 is closed.

  When removing the seed 13 from the instrument body 2, the lid 20 is opened and the release button 15 b of the engaging member 15 located inside the engaged member 16 is pushed. Then, as shown in FIG. 10, the engaging claw 15c is accommodated in the case 15a, and the engagement between the engaging claw 15c and the engaging groove 16d is released. Thereby, the shade 13 is removed from the instrument main body 2.

  According to the present embodiment, the lid 20 and the release button 15b are separate members, and the release button 15b can be covered by the lid 20, so that the release button 15b is not inadvertently touched and is unexpected. The fall of the shade 13 can be prevented.

  According to the present embodiment, the operator can easily perform a series of operations of pressing the release button 15b and removing the shade 13 from the instrument body 2 with one or both hands after sliding the lid 20. As a result, the burden on the operator who removes the shade 13 can be reduced. Since the lighting fixture 1 is often attached to a ceiling that is relatively high, it is very effective to facilitate the attaching / detaching operation of the shade 13. Furthermore, by providing the shade attaching / detaching mechanism 14 according to the present embodiment at the center of the instrument main body 2 and the shade 13, the shade 13 can be attached / detached if an operator supports the periphery of the attaching / detaching mechanism portion. Even if it becomes large, the attaching / detaching operation of the shade 13 can be easily performed.

  In the present embodiment, since the release button 15b is exposed when the lid 20 is opened, the release button 15b can be easily found. Further, the shade 13 can be detached from the instrument body 2 only by pressing the release button 15b. Thereby, the shade 13 can be easily detached from the instrument body 10.

  In the present embodiment, since the projecting piece 18 a is brought into contact with the outer peripheral surface of the engaged member 16, the engaged member 16 becomes difficult to move with respect to the engaging member 15, and the engaged member with respect to the engaging member 16 is Fluctuation of 15 can be suppressed. Thereby, it can prevent that the shade 13 inclines.

  In the present embodiment, the leaf spring 19 presses the shade 13 to the side opposite to the instrument body 2 side, so that an assisting force is applied when the shade 13 is removed from the instrument body 2, and the operator engages with the engaging claws 15 c. The shade can be easily detached from the instrument body simply by releasing the engagement with the engagement groove 16d. Further, when the shade 13 is removed with the appliance main body 2 placed on the ground, the shade 13 is often arranged so as to be on the upper side. Since it presses on the opposite side to 2 side, the shade 13 can be easily removed from the instrument main body 2.

  In the present embodiment, since the swell portion 13a is formed on the shade 13, the shade 13 can be prevented from cracking. That is, when the engaged member 16 is attached to the window portion 13b of the shade 13, cracks are easily generated from the edge portion of the window portion 13b, but the strength around the window portion 13b is increased by forming the raised portion 13a. Therefore, even when the engaged member 16 is attached to the window portion 13b, it is difficult to crack from the edge of the window portion 13b. Thereby, the crack of the shade 13 can be prevented. Moreover, since the swell part 13a functions also as a guide of the attachment position of the members 16a and 16b, the position alignment of the members 16a and 16b can be performed easily.

  In the present embodiment, since the lamp holder 10 is disposed at a position that holds the vicinity of the bent portion of the side portion 10b, it is possible to prevent the annular fluorescent lamp from being attached to the instrument body 2. That is, when the lamp holder 10 is disposed at a position that holds the central portion of the side portion 10b, an annular fluorescent lamp having a diameter from the side portion 10a to the side portion 10b is formed on the instrument body 2. It is possible to install. However, when an annular fluorescent lamp is attached, the annular fluorescent lamp is lit but the characteristics are deteriorated. Therefore, it is preferable that such an annular fluorescent lamp is not attached. In the present embodiment, since the lamp holder 10 is disposed so as to hold the vicinity of the bent portion of the side portion 10b, such a situation can be prevented.

  The present invention is not limited to the description of the above embodiment, and the structure, material, arrangement of each member, and the like can be appropriately changed without departing from the gist of the present invention. In the present embodiment, the slide-type lid 20 is used as a safety mechanism, but a configuration such as a lid that can be freely attached to and detached from the window 13a of the shade 13 may be used. However, there are substantially the same effects as the above embodiment. Moreover, in the said embodiment, although the shade 13 is attached to the instrument main body 16 by engaging the engaging claw 15c and the engaging groove 16d, the shade 13 can be attached to the instrument main body 16 by engaging. There is no particular limitation as long as the mechanism can be used. In the above embodiment, the fluorescent lamp 7 is used, but it may not be a fluorescent lamp. In the above-described embodiment, the leaf spring 19 is provided. However, when such a mechanism is unnecessary, it may not be provided.

It is a typical perspective view of the lighting fixture which concerns on embodiment. It is a typical perspective view of the lighting fixture which concerns on embodiment. It is a typical vertical sectional view of the lighting fixture which concerns on embodiment. It is a top view of the instrument main body which concerns on embodiment. It is a typical perspective view of the engaging member which concerns on embodiment, and its periphery. It is a typical perspective view of a shade concerning an embodiment and its circumference. It is a typical perspective view of the engaging member which concerns on embodiment, and its periphery. It is a typical perspective view of a shade concerning an embodiment and its circumference. It is the figure which showed typically the operation state of the shade attachment / detachment mechanism at the time of attaching the shade which concerns on embodiment. It is the figure which showed typically the operation state of the shade attaching / detaching mechanism at the time of removing the shade which concerns on embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Appliance main body, 7 ... Fluorescent lamp, 13 ... Sade, 13a ... Swelling part, 14 ... Shade attaching / detaching mechanism, 15 ... Engagement member, 15b ... Release button, 15c ... Engagement claw, 16 ... Engagement member, 16d ... engagement groove, 18a ... projection piece, 19 ... plate spring, 20 ... lid.

Claims (5)

An instrument body with a lamp;
A shade covering at least a portion of the instrument body;
An engaging portion provided at the center of the instrument body;
An engaged portion provided at a central portion of the shade so as to engage with the engaging portion;
Release means provided at the central portion of the instrument body or the shade so as to be operable from the outside, and releasing the engagement between the engaging portion and the engaged portion;
A safety mechanism which is movably provided on the opposite side of the device body side of the shade and which can be covered and exposed as a release means;
The lighting fixture characterized by comprising. An instrument body with a lamp;
A shade covering at least a portion of the instrument body;
An engaging portion provided at the center of the instrument body;
An engaged portion provided at a central portion of the shade so as to engage with the engaging portion;
Release means provided at the central portion of the instrument body or the shade so as to be operable from the outside, and releasing the engagement between the engaging portion and the engaged portion;
A safety mechanism which is detachably provided on the opposite side of the device body side of the shade, and which can be covered and exposed as a release means;
The lighting fixture characterized by comprising.   The lighting apparatus according to claim 1 or 2, wherein an inclination prevention mechanism for preventing the shade from inclining in a state where the engaging part and the engaged part are engaged is provided in the apparatus main body.   4. A pressing mechanism for pressing the shade to the side opposite to the instrument main body side in a state where the engaging part and the engaged part are engaged is provided on the instrument main body. The lighting fixture as described in a term.   The lighting device according to any one of claims 1 to 4, wherein the shade includes a rising portion on a back side of the shade, and the engaged portion is provided on the rising portion.

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