JP2013232286A - Rotation prevention mechanism of lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration of visibility and wasteful irradiation of commodities in a showcase or the like by preventing shifting in an irradiation direction of irradiation light due to rotation of a lighting apparatus.SOLUTION: Protruded pieces 34 are installed on an outer circumference of a lighting apparatus 30 in which a fluorescent lamp 32 as a light source is covered with a light-transmitting tubular protection cover 33, and the protruded pieces 34 on a lighting apparatus 30 side are engaged with a recessed installation part 20c recessed in a cross-section nearly U-shape of a holder 20 which pinches and holds the lighting apparatus 30 by a pinching part 20b with inward spring properties and capable of widening, whereby, rotation of the lighting apparatus 30 against the holder 20 is prevented.

Description

  The present invention provides an anti-rotation of an illuminating device that prevents rotation of the illuminating device attached to a fixed portion using a holder that holds and holds the illuminating device with a holding portion that has an inward spring property and a tip portion that can be expanded. Regarding the mechanism.

  Showcases installed in supermarkets, convenience stores and the like are equipped with lighting devices such as fluorescent lamps and LED modules to illuminate the product display room. In a showcase with a see-through door, such as reach-in or walk-in, this type of lighting device is installed vertically by holding it between the back of the support on the front of the case with a holder fixed in place on the support. (For example, refer to Patent Document 1). In addition, in an open type showcase having an open front surface, it is also sandwiched and held by a holder at the top of the opening on the front surface or the like (see, for example, Patent Document 2).

JP 2009-112351 A JP 2010-78250 A

  By the way, energization of the lighting device attached to the showcase is performed by providing a socket portion in a free state on the showcase side and connecting the lighting device to this socket portion. For this reason, the illuminating device is only positioned by the holding force of the holder, and the illuminating device may rotate when an operator or the product contacts the illuminating device at the time of putting in / out the product. When a normal fluorescent lamp is used for the lighting device, there is no problem because of 360-degree irradiation, but in order to suppress useless irradiation in a direction where irradiation is not necessary (for example, the wall side where the lighting device is attached). When a lighting device having directivity in the irradiation direction, such as a fluorescent lamp or LED module provided with a reflective film, is used, the irradiation direction of the illumination light deviates from the preset irradiation direction, and the product There was a problem that visibility was lowered and illumination light was wasted.

  The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a rotation prevention mechanism for a lighting device that can prevent a shift in the lighting direction in a lighting device having directivity in the irradiation direction.

  For this reason, the rotation preventing mechanism of the lighting device according to the present invention has an outer peripheral portion of the lighting device configured by covering the light source with a light-transmitting tubular protective cover, and has an open tip portion having a spring property inward. An anti-rotation mechanism for an illuminating device that prevents rotation of the illuminating device that is attached to the fixed portion using a holder that is held and held by an expandable holding portion and fixed to the fixed portion by an attaching portion, A rotation restricting means for restricting the rotation of the illumination device by engaging with the holder is provided on the outer periphery of the protective cover.

  According to the rotation prevention mechanism of the lighting device of the present invention, the rotation restricting means provided on the outer peripheral portion of the protective cover of the lighting device is engaged with the holder when an external force in the rotation direction acts on the lighting device. The illumination device can be prevented from rotating with respect to the holder holding and holding, and the deviation of the irradiation direction due to the rotation of the illumination device having directivity in the irradiation direction can be prevented. Degradation and waste of illumination light can be reduced.

It is a fragmentary perspective view which shows an example of the showcase to which embodiment of the rotation prevention mechanism of this invention is applied. It is a perspective view which shows the front door part of the showcase of FIG. 1 seen from the display room side. It is a partial expansion perspective view of an illuminating device. It is a figure which shows the frame attachment state of a holder. It is a figure which shows the attachment state of the illuminating device to a holder. It is a figure which shows the other example of a holder. It is a figure which shows the attachment state of the illuminating device to the holder of FIG. It is a figure which shows the other example of an illuminating device. It is sectional drawing which shows the other example of the protective cover of an illuminating device. It is a perspective view which shows another embodiment of the rotation prevention mechanism of this invention. FIG. 11 is a front view of the illumination device of FIG. 10 as viewed from the terminal side. It is a fragmentary perspective view which shows another example of the showcase to which the rotation prevention mechanism of this invention is applied. It is a principal part perspective view which shows another example of the showcase to which the rotation prevention mechanism of this invention is applied.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an example of a showcase to which the anti-rotation mechanism of the present invention is applied. The showcase 1 of FIG. 1 is a glass door such as a reach-in or a walk-in installed in a supermarket or a convenience store, for example. It is a low temperature showcase with.

  The showcase 1 has a main body constituted by a box 2 having a front opening, and a display chamber 3 is defined inside the box 2. The front (inside the store) opening of the display chamber 3 is closed so as to be freely opened and closed by a plurality of doors 5 (two in this embodiment) provided with a glass plate 4 through which the inside can be seen. In the display chamber 3, a plurality of shelves 7 are placed for placing products 6 such as plastic bottles.

  A frame body 8 is assembled to the front opening edge of the box body 2. The frame body 8 is formed in a stepped shape in which the opening area of the front side (store inside) opening 8A is larger than the opening area of the rear side (display room side) opening 8B, and is formed on both sides of the edge of the front side opening 8A. Each door 5 is pivotably supported. Further, as shown in FIG. 2, a support column 9 is provided up and down substantially at the center of the edge portion of the rear surface side opening 8 </ b> B, so that the door 5 has an edge portion of the rear surface side opening 8 </ b> B of the frame body 8. The front opening of the display chamber 3 is closed in close contact with the front surface of the display column 9 and the front surface of the column 9.

  And the illuminating device 30 is clamped and hold | maintained by the several holder 20 fixed at predetermined intervals up and down on the rear surface of the both sides of the rear surface side opening 8B of the said frame 8, and the rear surface (display chamber side) of the support | pillar 9. ing. The lighting device 30 is electrically energized to illuminate the inside of the display chamber 3 by electrically connecting the free socket portion 11 attached to the distal end of the electric wiring 10 taken out from the inside of the frame body 8 and the electrode terminal. In addition, a stopper 12 for preventing the attached lighting device 30 from dropping is provided below the rear surface side opening 8B of the frame 8 to which the lighting device 30 is attached. In FIG. 2, illustration of the illumination devices on both sides of the frame 8 is omitted, and only the illumination device 30 of the column 9 is illustrated.

  As shown in FIG. 3, the illuminating device 30 is, for example, a fluorescent lamp 32 containing a reflective film 31 as a light source, and the fluorescent lamp 32 is formed by, for example, extrusion molding of a resin, for example, a transparent and light-transmissive tubular tube. It is configured to be covered with a protective cover 33. Further, on the outer peripheral portion of the protective cover 33, protruding pieces that protrude to face each other outward as a rotation restricting means that engages the holder 20 and restricts the rotation of the lighting device 30 when attached to the holder 20. The (engaging portion) 34 is provided integrally with the tubular portion along the longitudinal direction of the tubular portion of the protective cover 33.

  For example, as shown in FIG. 4, the holder 20 has a sandwiching portion 20b having an inward spring property and an open front end portion 20a that can be expanded, and a substantially U-shaped cross section from the sandwiching surface of the sandwiching portion 20b. And a concave mounting portion 20c, which is fixed to the frame body 8 with screws 21 via the mounting portion 20c.

  When the lighting device 30 is attached to the holder 20, the lighting device 30 is inserted into the holder 20 while expanding the holding portion 20b from the open front end portion 20a of the holding portion 20b, and as shown in FIG. Is engaged with the mounting portion 20 c of the holder 20. Thus, even when an operator or a product comes into contact with the lighting device 30 and a left or right external force indicated by an arrow in the drawing is applied to the lighting device 30 when the product is taken in or out, the protruding piece on the lighting device 30 side. 34 abuts against the side surface of the mounting portion 20 c of the holder 20 to restrict the rotation of the lighting device 30, and the rotation of the lighting device 30 can be prevented. Therefore, the preset irradiation direction of the illumination device 30 is not shifted, and the visibility of products and the waste of illumination light can be reduced. Further, when considering application to a lighting device of a showcase of an existing store, since the rotation restricting means (protruding piece 34) is provided on the protective cover 33 of the lighting device 30, it is only necessary to replace the protective cover 33. It is possible to easily and inexpensively replace the lighting device incorporating the rotation prevention mechanism.

  In the above embodiment, the case where the holder shape has the recessed mounting portion 20c has been described. However, as shown in FIG. 6, in the case of the insertion type holder 40 in which the mounting portion 40c has no recessed portion, As shown in FIG. 7, the protruding piece 34 of the lighting device 30 may be engaged with the open distal end portion 40 a of the holding portion 40 b of the holder 40.

  In addition, as an illuminating device that has directivity in the irradiation direction and to which the rotation prevention mechanism of the present invention is preferably applied, in addition to the illuminating device that uses the above-described fluorescent film-containing fluorescent lamp as a light source, for example, FIG. There is an illumination device as shown in FIG. In addition, the same code | symbol is attached | subjected to the same element as the said embodiment. (A) uses an illumination module in which an LED element 52 is provided on a substrate 51 as a light source, and covers the aluminum part with a protective cover 33 having a fitting structure of aluminum 33a and light-transmitting resin 33b in consideration of heat dissipation. The module substrate is attached, and the projecting piece 34 of the rotation restricting means is integrally formed of aluminum. (B) is an illumination module comprising the substrate 51 and the LED element 52 provided back to back and covered with a light-transmissive protective cover 33 as a double-sided light distribution type light source.

  As described above, the rotation preventing mechanism of the present invention can be applied in common to both the holder for holding a fluorescent lamp and the holder for holding an illumination module using an LED element. When replacing from LED to LED, the existing holder can be used as it is without replacement, and only the illumination device needs to be replaced.

  The shape of the engaging portion as the rotation restricting means provided on the protective cover 33 is not limited to the above-described protruding piece 34, and may be any shape that can be engaged with the holder. 9 (A) to (C). The engagement portion 60 in FIG. 9A has a shape having a recess 60 a that protrudes outward from the outer peripheral portion of the tubular portion of the protective cover 33 and is recessed in the center. In the case of such a shape, the screw-fixed holder 20 can be engaged while avoiding the protrusion of the screw head, like the protruding piece 34. The engaging portion 61 in (B) has a substantially rectangular shape in cross section with the central recess in (A) removed. The engaging portion 62 in (C) has a shape in which a part of the tubular portion of the protective cover 33 is protruded into a substantially rectangular cross section similar to (B) above. These can be integrally formed by resin extrusion. Note that the protruding piece 34 shown in FIG. 3 and the engaging portions 60 and 61 shown in FIGS. 9A and 9B can be formed separately from the protective cover 33.

10 and 11 show another embodiment of the rotation restricting means.
10 and 11, the rotation restricting means 70 of the present embodiment is formed in an arc shape along the outer peripheral shape of a protective cover 80 to be described later, and has a gripping portion having an inward spring property and a tip portion that can be expanded. 70a, a protruding piece 70b as an engaging portion that protrudes outward from a substantially intermediate position of the outer peripheral portion of the gripping portion 70a and engages the holder 20, and substantially the same from both tip portions and both tip portions of the gripping portion 70a. And a plurality of claw portions 70c provided at intermediate positions of the distance. Further, the protective cover 80 to which the rotation restricting means 70 is applied has a plurality of grooves 80a along the axial direction of the cover for locking the claw portions 70c of the rotation restricting means 70 to the outer peripheral portion of the light transmitting tubular portion. (In this embodiment, there are three corresponding to the claw portions 70c of the rotation restricting means 70).

  In the rotation restricting means 70, the holder 20 (the same shape as that shown in FIG. 4) is clamped in a state where the claw 70c is locked to the groove 80a of the protective cover 80 and attached to the protective cover 80 of the lighting device 30. The illuminating device 30 is inserted into the holder 20 while expanding the open tip 20a of the portion 20b, and the protruding piece 70b is engaged with the mounting portion 20c of the holder 20. Thereby, the protrusion piece 70b engages with the mounting portion 20c of the holder 20, and the rotation of the lighting device 30 is restricted, and the rotation of the lighting device 30 can be prevented. In FIGS. 10 and 11, reference numeral 81 denotes a terminal portion that is electrically connected to a light source (fluorescent lamp or LED illumination module) inside the protective cover 80.

  In the above embodiment, the number of the groove portions 80a is three corresponding to the claw portions 70c. However, the number may be increased to the extent that the irradiation of the illumination device 30 is not affected. It is possible to selectively adjust the mounting position. Moreover, there is an effect of diffusing irradiated light by the groove 80a. Furthermore, it is possible to mount an illuminating device having a small tube diameter in accordance with the diameter of an existing holder, and the number of illuminating devices that can be applied to showcase lighting increases.

  In the above embodiment, the example in which the rotation prevention mechanism of the present invention is applied to a lighting device for a showcase with a glass door such as reach-in, walk-in, etc. has been described, but an open-type showcase as shown in FIGS. The present invention can also be applied to a lighting device. The open-type showcase shown in FIG. 12 will be briefly described. The open-type showcase 100 is a front surface of the ceiling portion 104 of the main body 103 in which a display chamber 102 in which a plurality of shelves 101 for placing products is installed is formed. The lighting device 30 is attached via the holder 20 to the lower surface of the canopy 105 attached to the side tip. The front side (inside the store) of the lighting device 30 is covered with a shade 106 formed of, for example, a milky white translucent plate. In the case of the open-type showcase 100 as well, the rotation prevention mechanism of the present invention described above is similarly provided to prevent the lighting device 30 from rotating, thereby reducing the visibility of goods and the waste of illumination light. Can do.

  FIG. 13 shows an example in which an illuminating device 30 is attached via a holder 20 to the lower surface of a shelf 201 ′ for placing goods in an open-type showcase 200 ′. Also in this case, by providing the rotation prevention mechanism of the present invention to prevent the illumination device 30 from rotating, it is possible to reduce the visibility of the product and waste of illumination light.

  Needless to say, the rotation prevention mechanism of the lighting device of the present invention holds not only the lighting device of a showcase installed in a supermarket, a convenience store, etc., but also a lighting device with a circular tubular protective cover. As long as the lighting device has a mounting structure, it can be applied to any lighting device.

1, 100, 200, 200 'Showcase 20, 40 Holder 20a, 40a Open tip 20b, 40b Holding part 20c, 40c Mounting part 30 Illuminating device 32 Fluorescent lamp 33, 80 Protective cover 34, 70b Projection piece (rotation restricting means )
51 Substrate 52 LED element 60, 61, 62 Engagement part (rotation restricting means)
60a Concave portion 70 Rotation restricting means 70a Grip portion 70c Claw portion 80a Groove portion

Claims (8)

The outer peripheral portion of the lighting device configured by covering the light source with a light-transmitting tubular protective cover is sandwiched and held by a clamping portion having an inward spring property and an open front end portion that can be expanded. An anti-rotation mechanism of the lighting device for preventing rotation of the lighting device attached to the fixed portion with respect to the holder using a holder fixed to the fixed portion;
An anti-rotation mechanism for an illuminating device, wherein a rotation restricting means for engaging the holder to restrict the rotation of the illuminating device is provided on an outer peripheral portion of the protective cover.   The rotation prevention mechanism of the illumination device according to claim 1, wherein the rotation restricting unit is engaged with the concave mounting portion that is recessed from the holding surface of the holding portion of the holder.   The rotation prevention mechanism of the lighting device according to claim 1, wherein the rotation restricting unit is engaged with the open front end portion of the holding portion of the holder.   The rotation prevention mechanism for an illumination device according to any one of claims 1 to 3, wherein the rotation restricting means is an engaging portion that protrudes outward from an outer peripheral portion of the protective cover and engages with the holder.   The rotation prevention mechanism of the lighting device according to claim 4, wherein the engaging portion is integrally formed with the protective cover.   The rotation restricting means is formed in an arc shape along the outer peripheral shape of the protective cover, and has a gripping portion having claw portions at both tip portions that are inwardly springable and expandable, and an outer periphery of the gripping portion An engaging portion that protrudes outward from the portion and engages with the holder, and the claw portion of the gripping portion is locked in a groove portion formed along the cover axial direction on the outer peripheral portion of the protective cover. The rotation prevention mechanism of the lighting device according to claim 1, wherein the rotation prevention mechanism is attached to an outer peripheral portion of the protective cover.   The rotation prevention mechanism of the illumination device according to any one of claims 4 to 6, wherein a concave portion is provided at a center of the engaging portion.   The rotation prevention mechanism of the illumination device according to any one of claims 1 to 7, wherein the illumination device illuminates the display room of a showcase including a display room in which a shelf for displaying products is installed.