JP2011171190A - Lighting system - Google Patents

Abstract

An object of the present invention is to provide a highly reliable illuminating device that has a simplified structure, has an excellent operability for attaching a cover member, and can reliably prevent the cover member from dropping.
The present invention relates to a cover member having translucency, a mounted portion to which the cover member is attached, and a mounted portion to which the cover member is attached to the mounted portion. When the movement stopper is moved in the direction, the anti-rotation piece 73 is elastically deformed and rides on, and then the engagement protrusion 56 with which the anti-rotation piece 73 is engaged by the rotation operation in the circumferential direction, and the attached portion 5 are formed. It is an illuminating device 1 provided with the support part 57a with which the fall prevention piece 74 engages by the movement operation of the member 7 with respect to the to-be-attached part 5, and the rotation direction of the circumferential direction after that.
[Selection] Figure 10

Description

  The present invention relates to an illuminating device including a cover member that covers an irradiation portion of light emitted from a light source.

  Recently, LEDs have been used as light sources for lighting devices. LEDs generally have high luminance and strong directivity. For this reason, depending on the usage environment of the lighting device, it may be necessary to illuminate with soft diffused light. In such a case, the illumination unit of the lighting device may be attached or detached with a diffusing cover member, for example, as necessary. It is desirable to be able to cover as much as possible.

  2. Description of the Related Art Conventionally, as a mounting structure for a cover member of a lighting device, there is a structure in which a lighting cover portion is attached to a main body portion by rotating the lighting cover portion to improve adhesion between the main body portion and the lighting cover portion (for example, , See Patent Document 1).

JP 2002-33013 A

  However, the structure disclosed in Patent Document 1 has a complicated structure, and is not sufficient for the detachable operability of the illumination cover part and prevention of dropping.

  The present invention has been made in view of the above problems, and provides a highly reliable lighting device that has a simplified configuration, has excellent cover member mounting operability, and can reliably prevent the cover member from falling. With the goal.

  The illumination device according to claim 1 is an apparatus main body having a light source; a circular main body, and a fall prevention extending in a direction perpendicular to the main body along the outer peripheral edge of the main body while covering the light source. A translucent cover member provided with a piece and a detent piece; a mounted portion provided in the apparatus main body to which the cover member is mounted; and formed on the mounted portion, the cover member being attached to the mounted portion And an engaging protrusion with which the anti-rotation piece engages with the rotation of the rotation direction in the circumferential direction, and then the cover member is formed on the attached portion. And a support portion with which the fall prevention piece is engaged by a rotation operation in the circumferential direction.

Although the downlight is suitable for the illuminating device of this invention, it is not restricted to this, It can apply to various lighting fixtures for indoor or outdoor. As the light source, a solid light emitting element such as an LED, a discharge lamp, or the like can be applied.
It is preferable to use a diffusive cover member, but the cover member is not particularly limited as long as it has translucency.

  A to-be-attached part means the member and part in which a cover member is attached. For example, a case, a reflector, and a light distribution member constituting the lighting device main body may correspond. The members and parts are not particularly limited.

  With this configuration, the operation at the time of attaching the cover member can be performed smoothly, and the operability is improved. Further, the cover member is configured such that the rotation prevention piece and the fall prevention piece function independently of each other, and the fall prevention piece engages with the support portion in a state where the rotation prevention is performed. The fall can be reliably prevented.

  The lighting device according to claim 2 is the lighting device according to claim 1, wherein at least the rotation operation side of the engaging protrusions is formed in a tapered shape in both sides in the circumferential direction. Features. With this configuration, the cover member can be easily removed.

  The illumination device according to claim 3 is the illumination device according to claim 1 or 2, wherein the cover member has a bulging portion whose diameter increases in the front direction. With this configuration, it is possible to promote the diffusion effect of irradiation light.

  According to a fourth aspect of the present invention, there is provided the lighting device according to the third aspect, wherein a packing is interposed between the outer peripheral surface corresponding to the bulging portion of the cover member and the inner peripheral surface on the apparatus main body side. It is characterized by. With this configuration, a waterproof effect can be ensured, and for example, it is suitable as an outdoor lighting device. Therefore, for example, in indoor and outdoor lighting devices, it is possible to share components such as the device main body.

According to the first aspect of the present invention, the operation at the time of attaching the cover member can be smoothly performed, the operability is improved, and the fall of the cover member can be surely prevented and the reliability is improved. A high lighting device can be provided.
According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the cover member can be smoothly removed.
According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, it is possible to promote the diffusion effect of irradiation light.
According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, a waterproof effect can be secured.

It is a perspective view which shows the illuminating device which concerns on the 1st Embodiment of this invention. It is the same exploded perspective view. It is a perspective view which shows the same reflector. It is a top view which shows the same reflector seeing from the front side. It is a perspective view which expands and shows the engagement protrusion in the reflector. It is a perspective view which expands and shows the engagement protrusion in the same reflector seeing from the back side. It is a perspective view which shows the cover member. It is a side view which shows the right side half in cross section with the center line as a boundary. It is a perspective view which expands and shows the fall prevention piece and rotation stop piece in the cover member. It is a perspective view which shows the attachment state of the reflector and a cover member. It is an expansion perspective view which shows the engagement process (initial stage) with the engagement protrusion of the same reflector, the fall prevention piece of a cover member, and a rotation stop piece. Similarly, it is an enlarged perspective view showing an engagement process (on the way) between the engagement protrusion of the reflector and the fall prevention piece and the rotation prevention piece of the cover member. Similarly, it is an enlarged perspective view showing an engagement process (on the way) between the engagement protrusion of the reflector and the fall prevention piece and the rotation prevention piece of the cover member. Similarly, it is an enlarged perspective view showing an engagement process (completion) between the engagement protrusion of the reflector and the fall prevention piece and the rotation prevention piece of the cover member. It is a side view which shows a part of illuminating device which concerns on the 2nd Embodiment of this invention in a cross section.

  An example of a downlight 1 of a type embedded in a ceiling as a lighting device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 14. The downlight 1 has a device main body 2 and a power supply unit (not shown) connected to the device main body 2.

  As shown in FIG.1 and FIG.2, the apparatus main body 2 has heat conductivity, and is formed in the approximate cylinder shape. The main body 2 includes a light distribution member 3 attached to the inside of the main body 2, a substrate 4 that is also attached to the inside of the main body 2, and on which a plurality of LEDs 10 as light emitting elements as light sources are mounted, a reflector 5, And a translucent protective cover 6 disposed on the front side of the reflector 5 and a removable translucent cover member 7. Further, attachment leaf springs 8 are mounted at three locations on the outer peripheral side of the main body 2.

  The main body 2 is formed in an inclined shape whose inner peripheral surface is widened toward the front side. The main body 2 is formed of a material having good thermal conductivity, for example, an aluminum alloy die casting. The outer surface of the main body 2 is baked and painted with a white melamine resin-based paint. The main body 2 may be formed of other materials as long as thermal conductivity can be ensured. A plurality of heat radiation fins extending in the vertical direction are formed on the outer surface of the main body 2. Further, the main body 2 has a circular shape in which the back surface side of the substrate 4 is disposed in close contact with the inner peripheral side thereof, and has a heat conducting surface formed on a flat surface.

  The light distribution member 3 is formed along the inner peripheral surface of the main body 2. That is, like the inner peripheral surface of the main body 2, the main body 2 is formed in an inclined shape that widens toward the front side. The light distribution member 3 is formed of a metal material such as an iron plate having thermal conductivity. The inner peripheral surface of the light distribution member 3 is baked and coated with a white melamine resin-based paint. The light distribution member 3 is integrally formed with an annular flange 3a extending in the outer peripheral direction as a decorative frame at an end portion of a substantially circular opening that widens toward the front side.

  The light distribution member 3 configured as described above is disposed so as to surround the periphery of the substrate 4. The light distribution member 3 has a function of controlling the light distribution of the light emitted from the plurality of LEDs 10 by an inclined form that spreads toward the front side. For example, it has a function of suppressing glare.

  The substrate 4 has a substantially circular plate shape, and a plurality of LEDs 10 serving as a light source are mounted on the surface side by a surface mounting method. Specifically, a total of 26 pieces are mounted, four at the center, eight around the periphery, and 14 at the outermost periphery. The substrate 4 is thermally coupled to the heat conducting surface of the main body 2.

  In order to improve the heat dissipation of each LED 10, it is preferable to apply a metal material having good thermal conductivity such as aluminum and excellent heat dissipation to the substrate 4 as the base plate. As such a substrate 4, a metal base substrate in which an insulating layer is laminated on one surface of an aluminum base plate is used. In addition, as a material of the base plate, a synthetic resin material such as a ceramic material or an epoxy resin can be applied when an insulating material is used.

  On the surface side of the substrate 4, a reflector 5 made of white polycarbonate, ASA resin or the like is disposed. The reflector 5 has a function of efficiently irradiating light emitted from the LEDs 10 by individually controlling the light distribution for each LED 10.

Further, a protective cover 6 is coupled to the front side of the reflector 5 by a locking claw. The protective cover 6 has a function of protecting the LED 10 and the like mounted on the substrate 4, but may be configured to be diffusible with a white or translucent material.
Further, a detachable translucent cover member 7 made of acrylic resin or the like mixed with a diffusing material is attached to the reflector 5 so as to cover them.

Next, details of the reflector 5 and the cover member 7 will be described with reference to FIGS. 3 to 6 show the reflector 5, and FIGS. 7 to 9 show the cover member 7.
(Structure of reflector)

  As shown in FIGS. 3 and 4, the reflector 5 has a disk shape, and a plurality of openings 52 are formed by the ridge lines of the partition walls 51. Specifically, 26 openings 52 are formed facing the LED 10. Four openings 52 are formed in the central portion, eight openings 52 are formed in the periphery thereof, and fourteen openings 52 are formed in the outermost periphery thereof. In addition, a substantially bowl-shaped reflecting surface 53 is formed inside each opening 52 by each partition wall 51. The reflection surface 53 expands toward the light irradiation direction, that is, toward the ridge line portion, and configures one reflection surface 53 for each opening 52.

  On the outer peripheral side wall of the reflector 5, a concave portion 55 that is concentric with the reflector 5 and that extends in the inner peripheral direction is formed. The recesses 55 are formed at three locations with an interval of about 120 degrees from each other (refer mainly to FIG. 4).

  As representatively shown in FIGS. 5 and 6, near the back surface of each of the recesses 55, substantially in the center, a front view in which a detent piece 73 of a cover member 7 described later is engaged, substantially U A character-like engagement protrusion 56 is formed. Both side portions 56a in the circumferential direction of the engaging projection 56 are formed in a tapered shape, and a front portion 56b orthogonal to the circumferential direction is also formed in a tapered shape. Further, the back surface portion 56 c of the engaging protrusion 56 is flush with the back wall 57 on the outer peripheral side of the reflector 5. In addition, the back wall 57 of the reflector 5 on one end side of the recess 55 serves as a support portion 57a with which a fall prevention piece 74 of the cover member 7 described later is engaged.

Further, the engagement protrusion 56 is formed in a taper shape, and the back side portion 56 c is flush with the back wall 57 on the outer peripheral side of the reflector 5. Can be set to the back-side portion 56c. For example, the parting line does not appear in the tapered portions (56a, 56b) of the engaging projection 56, and the desired tapered shape of the engaging projection 56 is obtained. Can be ensured.
(Configuration of cover member)

  The cover member 7 is detachably attached to the reflector 5. Therefore, in the present embodiment, the reflector 5 is a mounted portion of the cover member 7. As shown in FIGS. 7 and 8, the cover member 7 is formed in a circular dish shape, and includes a circular main body 71, an annular flange 72, a rotation-preventing piece 73 extending from the flange 72, and And a fall prevention piece 74.

  The main body 71 is a part that mainly transmits, diffuses, and radiates light emitted from the LED 10, and a plurality of anti-slip protrusions 71 a are formed in the vicinity of the outer peripheral edge on the front surface side. The anti-slip protrusion 71a is used to facilitate a turning operation by putting a finger on the cover member 7 when the cover member 7 is attached to or detached from the reflector 5.

  The annular flange 72 extends in the back direction along the outer peripheral edge of the main body 71, that is, in the direction orthogonal to the main body 71, and expands so as to expand in diameter toward the front as shown in FIG. An exit 75 is provided. The anti-slip protrusion 71a is disposed so as to face the bulging portion 75 (see FIG. 7).

  Further, the anti-rotation piece 73 and the fall prevention piece 74 are assembled with each other at an interval of about 120 degrees so as to extend from the collar portion 72 and to face the concave portion 55 of the reflector 5. It is formed in the place.

As shown in FIG. 9, the rotation preventing piece 73 is erected in a substantially square shape, and the rotation stopping piece 73 is formed with a rectangular fitting hole 73 a. On the other hand, the fall prevention piece 74 is formed independently of the rotation prevention piece 73 through the slit S, and has a key-like portion 74a in the circumferential direction (rotation direction) and is formed in an L shape. Has been. As shown in FIG. 8, the side on the back side (upper side in the drawing) forming the fitting hole 73a of the rotation stopper piece 73 and the key-like portion 74a of the fall prevention piece 74 are substantially at the same height position H. It is formed to become.
Next, an operation for attaching the cover member 7 to the reflector 5 will be described with reference to FIGS. In FIG. 10, the protective cover 6 is omitted.

  As shown in FIG. 10, the cover member 7 is attached to the reflector 5 as the attached portion. The attachment operation is performed so that the rotation prevention piece 73 and the fall prevention piece 74 of the cover member 7 are aligned with the concave portion 55 of the reflector 5.

  First, as shown in FIG. 11, the rotation-preventing piece 73 and the fall-preventing piece 74 are aligned with the concave portion 55 and moved in the rear side, that is, in the mounting direction (arrow Y in the figure). In this case, the rotation prevention piece 73 and the fall prevention piece 74 are guided and moved by the side walls of the recess 55. At this time, the slit S comes to face the engagement protrusion 56, and the rotation stopper piece 73 and the fall prevention piece 74 are guided and smoothly moved by the tapered portion 56b of the engagement protrusion 56. This movement in the mounting direction is restricted by the end surface of the annular flange 72 coming into contact with the surface side of the reflector 5.

  As shown in FIG. 12, the movement in the mounting direction is finished, and then it is rotated in the circumferential direction (arrow X in the figure). Here, at the time when the movement in the mounting direction is completed, at least the rotation stopper 73 is elastically deformed and rides on the engaging protrusion 56. Therefore, as shown in FIG. 13, the detent piece 73 rides on the engaging protrusion 56 and is in a state where a gap G is formed between the side wall of the recess 55.

That is, as shown in FIG. 11, the relationship between the dimension L1 between the both side walls of the recess 55 and the dimension L2 between the ends of the anti-rotation piece 73 and the fall prevention piece 74, and the anti-rotation piece 73 and From the relationship of the formation position of the fall prevention piece 74, at least the detent piece 73 is configured to ride on the engaging protrusion 56 as described above.
Therefore, the rotation operation can be performed with a light rotational force without applying excessive stress to the rotation stopper 73 during the rotation operation.

  As shown in FIG. 14, when the rotation operation is completed, the key-like portion 74 a of the fall prevention piece 74 engages with the support portion 57 a of the reflector, and the engagement protrusion 56 enters the fitting hole 73 a of the rotation stop piece 73. Will fit.

  Thereby, the cover member 7 is supported and attached to the reflector 5. Therefore, in the cover member 7, the fall prevention piece 74 is engaged with the support portion 57a in a state in which the rotation is prevented, and it is possible to reliably prevent the fall. Further, the back side (upper side in the figure) forming the fitting hole 73a of the rotation preventing piece 73 is substantially at the same height position H as the key-like portion 74a of the fall preventing piece 74, and the fitting hole Since 73a is supported by a portion 56c on the back side of the engaging protrusion 56, the fall preventing action is complementarily performed by fitting the engaging protrusion 56 into the fitting hole 73a.

  In addition, when removing the cover member 7 from the reflector 5, what is necessary is just to perform operation reverse to the above. In this case, since both side portions 56a in the circumferential direction of the engaging projection 56 are formed in a tapered shape during the turning operation, the fitting hole 73a is a tapered portion 56a on the turning operation side (on the right side in the drawing). It is possible to smoothly disengage from the engaging protrusion 56 along the line.

  According to the configuration as described above, the cover member 7 is detachable and can be attached and used as necessary. Moreover, the operation at the time of attachment can be performed smoothly and operativity becomes favorable. Furthermore, the cover member 7 is configured such that the rotation prevention piece 73 and the fall prevention piece 74 each function independently, and the fall prevention piece 74 engages with the support portion 57a in a state where the rotation prevention is made. Therefore, it is possible to reliably prevent the cover member 17 from being dropped due to long-term use or vibration.

  When the power supply unit is energized, the LED 10 emits light by supplying power to the substrate 4. Most of the light emitted from each LED 10 is transmitted through the main body 71 of the cover member 7 and diffused and irradiated forward. At this time, since the anti-slip protrusion 71a is disposed so as to face the bulging portion 75, the anti-slip protrusion 71a is reduced from being an obstacle to light irradiation. Further, since the bulging portion 75 has a diameter that increases in the front direction, this facilitates the diffusion of light.

  A part of the light is once reflected on each reflecting surface 53 of the reflector 5 corresponding to each LED 10 to be subjected to light distribution control, and is transmitted forward through the cover member 7. And the light irradiated to the front is irradiated with light distribution controlled by the light distribution member 3 as a whole.

  Next, a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the part which is the same as that of 1st Embodiment, or an equivalent, and the overlapping description is abbreviate | omitted. In the present embodiment, an example in which the downlight 1 in the first embodiment is used mainly for outdoor use, for example, for eaves is shown.

  For outdoor use, it is necessary to ensure waterproofness, and an annular packing P is provided between the outer peripheral surface corresponding to the bulging portion 75 of the cover member 7 and the inner peripheral surface of the light distribution member 3 on the apparatus main body 2 side. Intervening. By arranging the packing P in this way, the degree of adhesion is increased by the configuration of the bulging portion 75.

The power supply unit 20 is connected to the apparatus main body 2 and includes a power supply circuit 21, a power supply terminal block 22, and an arm-shaped attachment member 23. The power supply circuit 21 is electrically connected to the substrate 4 on which the LED 10 is mounted, and thereby the LED 10 is controlled to be lit.

  The downlight 1 is inserted from the power supply unit 20 side into the embedding hole of the ceiling surface C indicated by a broken line. And in the state embedded in the back side of the ceiling surface C, it is supported with the elastic force of the leaf | plate spring 8 for attachment.

  As described above, according to the present embodiment, by adding the packing P to the cover member 7, for example, the downlight 1 can be applied to indoor use and outdoor use, so that parts can be shared and cost can be reduced. Can be achieved.

The present invention is not limited to the configuration of the embodiment described above, and various modifications can be made without departing from the spirit of the invention. For example, the cover member does not necessarily have diffusibility as long as it has translucency. Further, in the above embodiment, the cover member has a circular main body part and a collar part, and the cover member is formed so as to form the rotation prevention piece and the fall prevention piece so as to extend from the collar part. Is not necessarily provided. It is also possible to form the rotation prevention piece and the fall prevention piece directly from the main body.
In addition, the lighting device can be applied to various lighting fixtures for indoor or outdoor use.

DESCRIPTION OF SYMBOLS 1 ... Illuminating device (downlight), 2 ... Device main body,
5: Mounted portion (reflector), 7: Cover member, 10: Light source (LED),
56 ... engaging protrusion, 57a ... support part, 71 ... main body part,
73: Detent piece, 74 ... Fall prevention piece, 75 ... Swelling part,
P ・ ・ ・ Packing

Claims (4)

An apparatus body having a light source;
A light-transmitting cover member that covers the light source and includes a circular main body, and a fall prevention piece and a rotation-preventing piece extending in a direction perpendicular to the main body along the outer peripheral edge of the main body; ;
A mounted portion provided in the apparatus main body, to which the cover member is mounted;
When the cover member is formed and moved in the mounting direction with respect to the mounted part, the detent piece is elastically deformed to ride on, and then the detent piece is engaged by a circumferential rotation operation. Engaging protrusions to do;
A support portion that is formed on the mounted portion, moves the cover member in the mounting direction with respect to the mounted portion, and then engages the fall prevention piece by a circumferential rotation operation;
An illumination device comprising:   2. The lighting device according to claim 1, wherein at least one of the engaging protrusions is tapered on both sides in a circumferential direction.   The lighting device according to claim 1, wherein the cover member has a bulging portion whose diameter increases in the front direction.   The lighting device according to claim 3, wherein packing is interposed between an outer peripheral surface corresponding to the bulging portion of the cover member and an inner peripheral surface on the apparatus main body side.

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