JP2014186881A - Lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively restrain insects from entering into a translucent cover in a lighting apparatus having the translucent cover that can be attached to and detached from an apparatus body.SOLUTION: A lighting apparatus 1 comprises an apparatus body 2, and a detachable and attachable cover 5. The apparatus body 2 has a packing 6 provided at a portion contacting the cover 5, and plural protrusion parts 25 projecting from the surface of the packing 6. The cover 5 has recess parts 52 provided at a portion contacting the apparatus body 2 and at a position corresponding to the protrusion parts 25. Depth of the recess part 52 is larger than projection height of the protrusion part 25 from the surface of the packing 6. According to this constitution, when the protrusion part 25 is fitted with the recess part 52, a peripheral edge 50 of the cover 5 is pressed to the packing 6, and a gap between them is eliminated. Therefore, entrance of insects into the cover 5 can be effectively restrained.

Description

  The present invention relates to a lighting fixture including a translucent cover that can be attached and detached by rotating the fixture main body.

  2. Description of the Related Art Conventionally, as a household lighting fixture, a lighting fixture including a translucent cover that can be attached and detached by rotating the fixture main body is known. Such lighting fixtures include ceiling lights that are attached to the ceiling. Fluorescent lamps are frequently used as light sources for ceiling lights, and in recent years, light emitting diodes (hereinafter referred to as LEDs) are also widespread.

  As these fluorescent lamps and LEDs, those containing a wavelength component of near-ultraviolet to blue light in the irradiation light are frequently used, and it is known that light containing this wavelength component has an action of attracting insects. For this reason, when the above light source is used as a ceiling light, insects attracted by the irradiated light may enter the translucent cover, and the appearance of the instrument may deteriorate.

  In a general lighting fixture, raising tape is stuck on the place where a fixture main body and a translucent cover contact, and the penetration | invasion of the insect into a translucent cover is suppressed. However, with brushed tape, the gap between the instrument body and the light-transmitting cover cannot be filled, and small insects such as chironomids and fruit flies may enter the light-transmitting cover. not enough. In addition, the translucent cover may expand or contract due to heat generated when the light source is turned on, or may be damaged, resulting in a gap between the translucent cover and the instrument body. Therefore, there is known a lighting fixture in which an elastic material is arranged at each edge where the fixture main body and the translucent cover are in contact with each other to fill the gap between them and prevent insects from entering the translucent cover. (For example, refer to Patent Document 1).

JP 2012-22850 A

  However, in the lighting fixture described in Patent Document 1, the translucent cover, the fixture body (chassis), and the elastic material are firmly fixed using a pressing member and a screw. Therefore, when the light source is a fluorescent lamp, the translucent cover cannot be easily removed from the instrument body in order to replace the fluorescent lamp. In addition, when the light source is an LED, although the light source is not frequently replaced, if the translucent cover cannot be removed, the maintenance of the instrument and the cleaning of the translucent cover are not easy. Moreover, if the translucent cover is fixed to the instrument body, the shape becomes easy to be fixed due to the deterioration of the elastic material, so that the restoration property is poor, and once the translucent cover is removed, it is attached again. There are times when you can't.

  The present invention solves the above-described problem, and provides a lighting fixture that can be detachably attached to a fixture body and that can effectively suppress insects from entering the transparent cover. The purpose is to provide.

  In order to solve the above-mentioned problems, the present invention provides a lighting fixture comprising a fixture main body and a translucent cover that can be attached and detached by rotating the fixture main body. A packing provided at a contact point with the optical cover, and a plurality of convex portions protruding from the surface of the packing, and the translucent cover is a contact point with the instrument body, and It has the recessed part provided in the position corresponding to a some convex part, The depth of the said recessed part is larger than the protrusion height from the surface of the said packing of the said convex part, It is characterized by the above-mentioned.

  The said lighting fixture WHEREIN: It is preferable that these convex parts are arrange | positioned by the fixed space | interval at the periphery of the said fixture main body.

  In the above luminaire, it is preferable that the convex portion is formed by processing a plate material that constitutes the fixture body.

  In the above luminaire, the surface of the packing is preferably formed of a flexible material.

  In the above luminaire, the packing preferably has a foaming ratio of 1.5 times or more.

  In the above luminaire, the translucent cover has a protruding portion that protrudes inward from the inner peripheral edge of the cover, the fixture main body has a stopper that engages with the protruding portion, and the stopper has the translucent shape. It is preferable to have a vertical part that restricts the rotation of the protective cover and a horizontal part that presses the translucent cover toward the instrument body.

  According to the present invention, when the convex part of the instrument main body is fitted into the concave part, the peripheral edge of the translucent cover is pressed against the packing, and the gap between them is eliminated, so that the insects can enter the translucent cover effectively. Can be suppressed. Also, when the convex part is not fitted in the concave part, the convex part hits the periphery of the translucent cover, and the peripheral edge of the cover and the packing do not come into contact with each other. The translucent cover can be easily removed from the instrument body.

The disassembled perspective view of the lighting fixture which concerns on one Embodiment of this invention. The partial expansion perspective view containing the partial cross section of the said lighting fixture and a translucent cover. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. (A) thru | or (c) is the sectional view on the AA line of FIG. 2, Comprising: The partial sectional side view which shows the procedure which attaches a translucent cover to an instrument main body, (d) is the BB sectional view of FIG. Figure.

  A lighting apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in FIG. 1, the lighting fixture 1 of the present embodiment is provided in a fixture main body 2, an annular light source (LED) 3 centered on the central portion of the fixture main body 2, and a light emitting direction of the LED 3. And an optical member 4 that controls the light distribution of the light emitted from the LED 3. The luminaire 1 also includes a translucent cover (hereinafter simply referred to as a cover) 5 that is provided in the light emitting direction from the optical member 4 and diffuses and emits the light emitted from the optical member 4. In this embodiment, LED groups 3a and 3b formed by arranging a plurality of LEDs 3 in an annular shape are arranged in two rows concentrically. The light source is not limited to the LED 3 described here, and an annular fluorescent lamp may be used. If the light source is a fluorescent lamp, the optical member 4 is not necessary. In addition, the instrument body 2 has a packing 6 provided at a place where it contacts the cover 5.

  The instrument body 2 is a disk-shaped structural member, and the LED 3 and the like are arranged on the surface opposite to the construction surface such as a ceiling. In the central part of the instrument main body 2, a power feeding unit 21 fixed to a power feeding connector or the like provided on the construction surface is provided. Further, a lighting circuit 22 for lighting and driving the LEDs 3 and a substrate 23 on which the LEDs 3 are mounted are provided on the outer peripheral side of the power feeding unit 21. The instrument body 2 is formed by pressing a plate material such as an aluminum plate or a steel plate having a predetermined rigidity into the above-described shape, and a white paint having a high visible light reflectance is provided on the surface on which the LED or the like is disposed. A coated or reflective metal material is deposited.

  The power supply unit 21 is a general-purpose adapter guide, and is connected to a commercial AC power supply via a power supply connector or the like. The lighting circuit 22 includes a transformer, a capacitor, a control IC, and the like for converting and rectifying the alternating current supplied from the power supply unit 21 into a direct current having a predetermined voltage suitable for the LED 3. The substrate 23 is made of an insulating material such as glass epoxy resin, and a predetermined wiring pattern is formed on the surface on which the LED 3 is mounted. The lighting circuit 22 is configured to be able to light the central LED group 3a and the outer LED group 3b independently of each other based on a user operation. In addition, each LED3 in each LED group 3a, 3b may be comprised so that further partial lighting or thinning-out lighting etc. are possible by grouping individually or in groups.

  The LED 3 is configured as an LED package by covering with a wavelength conversion member that converts the wavelength of light emitted from the LED chip. For example, a GaN-based blue LED chip that emits blue light is used as the LED chip, and the wavelength conversion member can emit light of daylight white or light bulb color to the translucent resin material for sealing. For this purpose, a phosphor mixed with the phosphor is used.

  The optical member 4 is a bowl-shaped lens member that collectively covers a plurality of LEDs 3 arranged in an annular shape, and controls light distribution from the LEDs 3 to a wide angle. In the present embodiment, the optical member 4 includes a central lens portion 4a that covers the LED group 3a on the center side of the fixture and an outer lens portion 4b that covers the LED group 3b on the outer peripheral side of the fixture. The central lens portion 4a and the outer lens portion 4b are connected to each other by a base portion 40 for fixing the optical member 4 to the instrument main body 2, and they are integrally formed. The optical member 4 is fixed to the instrument body 2 via an adjustment member 24 corresponding to the thickness of the substrate 23 on which the LED 3 is mounted. Such an optical member 4 is formed of a translucent resin such as an acrylic resin.

  The cover 5 has a dome shape that covers the front surface of the instrument body 2 and is formed of a resin material obtained by adding light diffusing particles, pigments, or the like to a translucent material such as an acrylic resin. The cover 5 is obtained by subjecting the surface or back surface of a transparent glass plate or resin plate to a rough surface by applying a sandblasting treatment or a textured surface, instead of adding the above light diffusing particles or pigments. Etc.

  The packing 6 is formed in an annular shape having the same diameter as the peripheral edge of the instrument body 2, and a cross section passing through the diameter is formed in a dome shape protruding toward the cover 5 with a flat bottom contacting the instrument body 2. The thickness of the packing 6 is set to be equal to or greater than the gap between the cover 5 and the instrument body 2 that may be generated by the distortion of the cover 5, and is preferably 1.1 to 1.5 times the gap. . The packing 6 is made of rubber such as urethane rubber, silicone rubber, or acrylic rubber, and urethane rubber or silicone rubber having relatively high flexibility is preferably used. In addition, a plurality of holes for projecting the convex portions 25 are provided at positions corresponding to the convex portions 25 of the instrument body 2. The packing 6 formed in this way is fixed to the periphery of the instrument body 2 by an adhesive. Further, for example, by injecting a liquid foamed resin-based member such as urethane foam or foamed silicone into a groove formed in advance on the periphery of the instrument body 2, the packing 6 can be used in consideration of a foaming process such as heat treatment or UV treatment. It may be formed on the periphery of the main body 2.

  As shown in FIG. 2, the cover 5 has a protruding portion 51 that protrudes inward from its inner peripheral edge. A plurality of protrusions 51 are provided at regular intervals on the inner periphery of the cover 5 (see also FIG. 1). On the other hand, the instrument body 2 has a plurality of stoppers 7 that engage with the protrusions 51 in the vicinity of the outer periphery thereof. The stopper 7 has a vertical portion 71 that restricts the rotation of the cover 5 and a horizontal portion 72 that presses the cover 5 toward the instrument main body 2 when the protruding portion 51 comes into contact therewith. As shown in FIG. 1, a plurality of at least three stoppers 7 are provided near the outer periphery of the instrument body 2 at regular intervals. In the illustrated example, the stoppers 6 are provided at three locations near the outer periphery of the instrument body 2, and the protrusions 51 are provided at six locations on the inner peripheral edge of the cover 5. At this time, three of the six projecting portions 51 are engaged with the stopper 7, and the projecting portion 51 and the stopper 7 are engaged or released if the cover 5 is rotated up to 60 ° relative to the instrument body 2. be able to.

As shown in FIG. 3, the instrument main body 2 has a plurality of convex portions 25 that protrude from the surface of the packing 6 in addition to the packing 6 provided at the contact point with the cover 5 (see also FIG. 2). . The convex portions 25 are arranged at regular intervals on the periphery of the instrument body. Further, the width W ₁ of the convex portion 25 in the instrument diameter direction is smaller than the width W _{2 of the} packing 6. That is, although the packing 6 has a hole for projecting the convex portion 25, the packing 6 itself is continuously connected without interruption. Although the number of the convex parts 25 is set according to the diameter of a lighting fixture, it should just be at least three. It is preferable that the convex part 25 is comprised by pressing the board | plate material which comprises the instrument main body 2. As shown in FIG. In this way, the convex portion 25 can be formed integrally with the instrument body 2 at the same time, and the strength of the convex portion 25 is improved and the productivity of the instrument body 2 is improved as compared with the case where the convex portion 25 is separately formed. Can be improved.

  Further, the cover 5 has a concave portion 52 provided at a position corresponding to the convex portion 25 at a position where the cover 5 is in contact with the instrument main body 2. The depth D of the concave portion 52 of the cover 5 is larger than the protruding height H of the convex portion 25 of the instrument body 2 from the surface of the packing 6.

  Next, the procedure for attaching the cover 5 to the instrument body 2 will be described with reference to FIG. In the figure, assuming that the instrument body 2 is attached to the ceiling, the instrument body 2 is shown upward and the cover 5 is shown downward. First, the peripheral edges of the instrument body 2 and the cover 5 are brought close to each other so that the protruding portion 51 and the stopper 7 do not overlap. At this time, as shown in FIG. 4A, the convex portion 25 protruding from the instrument main body 2 contacts the peripheral edge 50 of the cover 5, so that the peripheral edge 50 of the cover 5 and the packing 6 do not contact each other. Since neither the convex part 25 nor the peripheral edge 50 of the cover 5 has flexibility, there is little friction and sliding is good. Therefore, in this state, the cover 5 can be smoothly rotated with respect to the instrument body 2.

  Next, when the cover 5 is rotated with respect to the instrument body 2 and the projecting portion 51 comes into contact with the stopper 7 as shown in FIG. 4B, the cover 5 is moved to the instrument body by the horizontal portion 72 of the stopper 7. It is pushed up to the 2 side. Then, after the cover 5 is further rotated, when the rotation is restricted by the vertical portion 71 of the stopper 7, as shown in FIG. 4C, the cover 5 is further pushed up toward the instrument body 2, and the convex portion 25. Fits into the recess 52. At this time, as shown in FIG. 4 (d), at a position without the convex portion 25 and the concave portion 52, the peripheral edge 50 of the cover 5 is pressed against the flexible packing 6, and the cover 5, the instrument body 2, Since the gap between is sealed, insects can be prevented from entering the cover 5. Further, since the packing 6 itself is continuously connected without interruption, even when the convex portion 25 is fitted into the concave portion 52, there is almost no gap for the insects to enter. In addition, when removing the cover 5 from the instrument main body 2, the procedure reverse to the above may be performed.

  Moreover, since each convex part 25 is arrange | positioned by the fixed periphery at the periphery of the instrument main body 2, when rotating the cover 5 with respect to the instrument main body 2, the distance of the cover 5 and the instrument main body 2 is stabilized. Therefore, the cover 5 can be smoothly rotated.

  Further, the surface of the packing 6 is formed of a flexible material. In this way, when the peripheral edge of the cover 5 is pressed against the packing 6, the packing 6 is brought into close contact with the peripheral edge of the cover 5, and insects can be effectively prevented from entering the cover 5.

  Further, the expansion ratio of the packing 6 is desirably 1.5 times or more. If it carries out like this, it will become easy to fill the clearance gap between the cover 5 and the instrument main body 2, and the penetration | invasion of the insect into the cover 5 can be suppressed more effectively. Moreover, the material cost of the packing 6 can be reduced.

  Here, the Example and comparative example which changed the material and thickness of the packing 6 in embodiment mentioned above, the height of the convex part 25, and the depth of the recessed part 52 are demonstrated. Panasonic HHFZ4140 ceiling lighting was used as the base lighting fixture.

  In Example 1, the convex part 25 was formed so that it might become about 2 mm in height from the instrument main body 2 which consists of a steel plate. Further, urethane foam (Penguin Foam: # 3113 / manufactured by Sunstar) was used as the liquid foamed resin-based member, and foamed and dried at room temperature for 48 hours to form the packing 6. The average height of the packing 6 is 1.8 mm, and the expansion ratio is about 2.5 times.

  In Example 2, foamed silicon (sonderoff / manufactured by Germany) was used as the liquid foamed resin-based member, dried at 80 ° C. for 60 minutes, and then left for 48 hours to form the packing 6. The expansion ratio of the packing 6 is about 2 times.

  In Example 3, the convex part 25 was formed so that it might become about 2.2 mm in height from the instrument main body 2 which consists of a steel plate. Moreover, the recessed part 52 was made into the through-hole. Others are the same as in the first embodiment.

  In Example 4, the convex part 25 was formed so that it might become about 2.2 mm in height from the instrument main body 2 which consists of a steel plate similarly to Example 3. FIG. The average height of the packing 6 is 2 mm. Others are the same as in the second embodiment.

  In Comparative Example 1, the convex portion 25, the concave portion 52, and the packing 6 are not provided. Comparative Example 2 uses a raised sheet.

  As an experimental condition, a lighting fixture was attached to the outdoor side of a building that was not exposed to rain, and the number of insects that entered the fixture in about one month was counted. The experiment was repeated twice in August and September, and the average value of the counted insects was evaluated.

  As shown in Table 1 above, almost no insect invasion was observed in any of the examples. The depth of the concave portion 52 of the cover 5 is larger than the protruding height of the convex portion 25 from the surface of the packing 6 (0.2 to 0.4 mm in each example of Table 1). Therefore, as shown in FIG. 4C described above, when the convex portion 25 is fitted into the concave portion 52, the peripheral edge 50 of the cover 5 is pressed against the packing 6, and the gap therebetween disappears. Therefore, insects can be effectively prevented from entering the cover 5. Further, as shown in FIG. 4A described above, when the convex portion 25 does not fit into the concave portion 52, the convex portion 25 hits the peripheral edge of the cover 5, and the peripheral edge of the cover 5 and the packing 6 do not contact each other. The cover 5 can be smoothly rotated with respect to the instrument body 2, and the cover 5 can be easily detached from the instrument body 2.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. In the third embodiment, the recess 52 is a hole. In this case, a slight gap may be formed between the recess 52 and the recess 52, and therefore the recess 52 is preferably a bottomed depression. Further, if the diameter of the concave portion 52 is the same as the diameter of the convex portion 25, the convex portion 25 may not fit into the concave portion 5 because the thermal expansion of the cover 5 or the processing accuracy of the convex portion 25 is low. The diameter of the recess 52 is preferably slightly larger than the diameter of the protrusion 25. On the other hand, if the diameter of the concave portion 52 is too large, there is a possibility that a gap for the insect to enter is generated. Therefore, the diameter of the concave portion 52 is preferably about 1.2 times the diameter of the convex portion 25, and the diameter is preferably smaller than the width of the packing 6. By so doing, the gap between the concave portion 52 and the convex portion 25 is sealed by the packing 6, so that the invasion of insects can be effectively suppressed.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Appliance main body 24 Convex part 5 Cover (translucent cover)
51 Concave part 6 Packing 7 Stopper 71 Vertical part 72 Horizontal part

Claims (6)

A lighting fixture comprising a fixture main body and a translucent cover that is removable by rotating the fixture main body,
The instrument body has a packing provided at a contact point with the translucent cover, and a plurality of convex portions protruding from the surface of the packing,
The translucent cover has a concave portion provided at a position corresponding to the plurality of convex portions at a contact point with the instrument main body,
The depth of the said recessed part is larger than the protrusion height from the surface of the said packing of the said convex part, The lighting fixture characterized by the above-mentioned.   The lighting fixture according to claim 1, wherein the plurality of convex portions are arranged at regular intervals on a peripheral edge of the fixture main body.   The said convex part is comprised by processing the board | plate material which comprises the said instrument main body, The lighting fixture of Claim 1 or Claim 2 characterized by the above-mentioned.   The lighting fixture according to any one of claims 1 to 3, wherein a surface of the packing is formed of a flexible material.   The lighting fixture according to any one of claims 1 to 4, wherein a foaming ratio of the packing is 1.5 times or more. The translucent cover has a protruding portion protruding inward from the inner peripheral edge of the cover,
The instrument body has a stopper that engages with the protrusion,
The said stopper has a vertical part which controls rotation of the said translucent cover, and a horizontal part which presses the said translucent cover to the said instrument main body side, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. A lighting apparatus according to claim 1.