JP5331043B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device including a light emitting element such as an LED or an EL element.

  A conventional illumination device is disclosed in Patent Document 1. This illuminating device has a light source composed of a plurality of LEDs in a main body, and forms a downlight in which the main body is embedded in a hole recessed in an installation surface such as an indoor ceiling wall. A power cord for supplying power to the light source is extended from the main body. A flange having a diameter larger than that of the hole is formed on the end surface on the emission side of the main body. V-shaped leaf springs are attached to two opposing portions of the peripheral surface of the main body. The leaf spring extends from the fixed end toward the flange, bends at the bent portion near the flange, and the open end separates from the flange. The interval between the bent portions of both leaf springs is formed larger than the diameter of the hole.

  After connecting the power cord to the terminal of the commercial power source exposed in the hole, the leaf spring is elastically deformed so that the open end approaches the body, and the body is inserted into the hole together with the leaf spring. The abutment surface on the back side of the flange portion abuts on the front surface of the ceiling wall around the hole portion, and the bent portion of the leaf spring abuts on the back surface of the ceiling wall by elasticity. Thereby, a ceiling wall is clamped by a leaf | plate spring and a collar part, and an illuminating device is fixed.

JP 2009-64636 A (page 6 to page 11, FIG. 1)

  In recent years, in order to save power, replacement of an existing lighting device having a light source such as an incandescent light bulb with a lighting device having a low power consumption light emitting element such as an LED or an EL element has been promoted. At this time, the size and shape of the hole in the wall surface where the lighting device such as a downlight is installed is not constant. However, in the above conventional lighting device, the distance between the opposing leaf springs is formed constant, so that the hole is large and the leaf spring and the flange cannot hold the ceiling wall, or the hole is small and the leaf spring is in the hole. May not enter. Therefore, there is a problem that the existing lighting device cannot be easily replaced.

  An object of the present invention is to provide an illumination device that has a light emitting element such as an LED or an EL element and can easily replace an existing illumination device.

In order to achieve the above object, the present invention provides:
A base that fits into a socket for power supply provided in a hole recessed in the installation surface;
A power connection part attached to the base and elastically stretchable;
A flat illumination part provided with a contact surface that is attached to the power supply connection part by mounting a light source having a light emitting element and is in contact with the installation surface around the hole part by contraction of the power supply connection part;
It is characterized by having.

  According to this configuration, the socket is disposed in the hole portion that is recessed in the installation surface such as the ceiling wall, and the base is fitted into the socket, and power is supplied to the light source through the power connection portion. The flat illumination part is pulled by the contraction due to the elasticity of the power connection part, and the abutment surface is attached in contact with the installation surface around the hole. Illumination light is emitted from the front surface of the illumination unit by the light emitted from the light source.

  According to the present invention, in the illumination device having the above-described configuration, the power supply connection portion includes an electric cord including a conductive wire and an elastic cover that covers the electric cord. According to this configuration, the base is fitted into the socket, and the illumination unit is pulled by contraction due to the elasticity of the cover that covers the power cord.

  According to the present invention, in the illumination device having the above-described configuration, the power supply connecting portion is formed by a spiral electric cord including a conductive wire. According to this configuration, the base is fitted into the socket, and the illumination unit is pulled by contraction due to the elasticity of the spiral power cord.

  Further, the present invention is characterized in that, in the illumination device configured as described above, the power supply connection portion and the illumination portion are detachable. According to this configuration, the power supply connection portion and the illumination portion are removed, the base is fitted into the socket, and the power supply connection portion and the illumination portion are coupled while pulling the power supply connection portion with fingers. When the finger is released, the contact surface of the illumination unit contacts the wall surface. Thereby, the attachment operation | work of an illuminating device can be performed easily.

  According to the present invention, in the illuminating device having the above-described configuration, an electrode made of a magnetic material provided on one of the power supply connection portion and the illuminating portion, and a magnet provided on the other side and attracted to the magnetic material to be conducted. The magnetic body and the magnet are engaged by rotating the power supply connection portion in one direction with respect to the illumination portion, and the illumination portion is attached to the power supply connection portion in the other direction. , The illumination part is detached from the power connection part by releasing the engagement between the magnetic body and the magnet.

  According to this configuration, for example, a magnetic electrode is provided in the power supply connection portion, and a magnet electrode is provided in the illumination portion. When the power supply connection portion is rotated in one direction with respect to the illumination unit, the magnetic body and the magnet are engaged, and the illumination unit is attached to the power supply connection unit. As a result, the magnetic electrode and the magnet electrode are electrically connected, and power is supplied from the power supply connection portion to the illumination portion. Further, when the power supply connection portion is rotated in the other direction with respect to the illumination portion, the engagement between the magnetic body and the magnet is released, and the illumination portion is detached from the power supply connection portion.

  Further, the present invention is characterized in that, in the illumination device configured as described above, the light source and the base are arranged on the opposite side with respect to the contact surface. According to this configuration, since the light source is not arranged in the hole, the illumination device in the hole can be made small.

  According to the present invention, in the illumination device having the above configuration, a power supply substrate of the light source is disposed in the illumination unit, and the power supply substrate and the base are disposed on the opposite side with respect to the contact surface. . According to this configuration, since the power supply substrate is not arranged in the hole, the lighting device in the hole can be made small. The power supply substrate and the light source mounting substrate may be integrally formed.

  According to the present invention, in the illumination device configured as described above, a power supply substrate of the light source is arranged inside the base. According to this structure, the illuminating device in a hole can be made small.

  According to the present invention, in the lighting device having the above-described configuration, the connecting portion that connects the power supply connecting portion and the lighting portion is formed to have a size that enters the inside of a circle having a diameter of 50 mm in a cross section parallel to the contact surface. In addition, the power source board of the light source is disposed inside the connecting portion. According to this structure, the illuminating device in a hole can be made small.

  According to the present invention, in the illumination device configured as described above, the illumination unit is characterized in that a front surface facing the contact surface is inclined with respect to the contact surface.

  According to the present invention, in the illumination device having the above-described configuration, the light emitting element is an LED or an EL element.

  According to the present invention, an existing lighting device can be easily replaced with a lighting device having a light emitting element such as an LED or an EL element.

Side surface sectional drawing which shows the illuminating device of 1st Embodiment of this invention. 1 is a bottom cross-sectional view illustrating a lighting device according to a first embodiment of the present invention. Side surface sectional drawing which shows the expansion-contraction state of the power supply connection part of the illuminating device of 1st Embodiment of this invention. Side surface sectional drawing which shows the attachment or detachment state of the power supply connection part of the illuminating device of 1st Embodiment of this invention. Side surface sectional drawing which shows the other example of attachment of the illuminating device of 1st Embodiment of this invention. Side surface sectional drawing which shows the other example of attachment of the illuminating device of 1st Embodiment of this invention. Side surface sectional drawing which shows the illuminating device of 2nd Embodiment of this invention. Side surface sectional drawing which shows the illuminating device of 3rd Embodiment of this invention. The perspective view which shows the illuminating device of 4th Embodiment of this invention. Side surface sectional drawing which shows the illuminating device of 5th Embodiment of this invention. Side surface sectional drawing which shows the other light source of the illuminating device of 1st-5th embodiment of this invention. The bottom view which shows the other light source of the illuminating device of 1st-5th embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side cross-sectional view and a bottom cross-sectional view showing the lighting apparatus of the first embodiment. The illumination device 1 is configured by connecting a base 4 and an illumination unit 2 by a power supply connection unit 3. The base 4 is formed according to a base standard such as E14, E17, E26, etc., and is fitted into a power supply socket 22 provided in a hole portion 21 provided in an installation surface such as an indoor or outdoor ceiling wall 20. Thereby, the nozzle | cap | die 4 can be attached to sockets 22, such as an existing downlight.

  The illumination unit 2 is formed in a flat plate shape with the front surface 2c (lower surface) covered with a transparent housing 10. A light source 13 having one or a plurality of light emitting elements 12 mounted on a mounting substrate 11 is mounted inside the housing 10. A contact surface 2 a that contacts the ceiling wall 20 is formed by the rear surface (upper surface) of the housing 10. Thereby, the mounting substrate 11 and the base 4 are arranged on the opposite side with respect to the contact surface 2a. Further, the light source 13 and the base 4 are arranged on the opposite side with respect to the contact surface 2a.

  The light emitting element 12 is formed of an LED, and the power consumption of the light source 13 is lower than that of an incandescent bulb or a fluorescent tube having the same brightness. A power supply circuit for the light source 13 is formed on the upper surface or the lower surface of the mounting substrate 11. Thereby, the power supply substrate of the light source 13 is formed by the mounting substrate 11.

  The power connection 3 is formed by covering a power cord (not shown) having a conductive wire with a cover 6. One end of the power supply connecting portion 3 is attached to the base 4, and the other end is attached to the connecting portion 2 b provided in the illumination portion 2. The cover 6 is formed of a bellows in which a coil spring is covered with a soft resin. Thereby, as shown in FIG. 3, the power supply connecting portion 3 is extendable from a contracted state shown by a solid line to an extended state shown by a one-dot chain line (shown by 3 ′ in the figure) due to the elasticity of the cover 6. .

  The hole 21 for forming a downlight or the like is generally formed in a size that can accommodate a G80 size (diameter 80 mm) or G50 size (diameter 50 mm) bulb. For this reason, the cover 6 and the connecting portion 2b are formed in a size that fits inside a circle having a diameter of 80 mm in a cross section parallel to the contact surface 2a. It is more preferable that the cover 6 and the connecting portion 2b are formed so as to fit inside a circle having a diameter of 50 mm in a cross section parallel to the contact surface 2a because the cover 6 and the connecting portion 2b can be inserted into the small hole portion 21.

  Moreover, as shown in FIG. 4, the power supply connection part 3 can remove the cover 6 and a power cord from the connection part 2b integrally. At this time, an electrode (not shown) made of a magnetic material is provided in the power supply connecting portion 3, and an electrode (not shown) made of a magnet is provided in the connecting portion 2b. The magnetic electrode and the magnet electrode are engaged by rotation. For this reason, when the magnet is attracted to the magnetic body and the power supply connection section 3 is rotated in one direction with respect to the illumination section 2, the magnetic body and the magnet are engaged to attach the illumination section 2 to the power supply connection section 3. The Thereby, a magnetic body and a magnet conduct | electrically_connect, and electric power is supplied to the illumination part 2 from the power supply connection part 3. FIG.

  Further, when the power supply connection unit 3 is rotated in the other direction with respect to the illumination unit 2, the engagement between the magnetic body and the magnet is released, and the illumination unit 2 can be detached from the power supply connection unit 3. A magnet electrode may be provided in the power supply connecting portion 3 and a magnetic electrode may be provided in the connecting portion 2b. Further, the connecting portion 2b may be provided integrally with the power supply connecting portion 3 so that it can be detached from the illumination portion 2.

  In the illuminating device 1 having the above-described configuration, the power source connecting portion 3 and the illuminating portion 2 are removed when the illuminating device 1 is attached, and the base 4 is fitted into the socket 22. Then, the power supply connection part 3 and the illumination part 2 are connected, pulling the power supply connection part 3 with fingers. When the finger is released, the illumination unit 2 is pulled by contraction due to the elasticity of the power supply connection unit 3, and the contact surface 2 a of the illumination unit 2 contacts the ceiling wall 22 (installation surface) around the hole 21. Thereby, the attachment operation | work of the illuminating device 1 can be performed easily.

  Electric power is supplied to the illumination unit 2 from the socket 22 via a power cord (not shown) in the power connection unit 3. The light source 13 is driven at a predetermined voltage by a power supply circuit provided on the mounting substrate 11. Thereby, the light source 13 emits light, and illumination light is emitted from the front surface 2 c of the illumination unit 2.

  FIG. 5 is a side sectional view showing another example of attachment of the lighting device 1. According to this, the diameter and depth of the hole 21 recessed in the ceiling wall 20 are smaller than those in FIG. As shown in the figure, the contact surface 2 a of the illumination unit 2 abuts against the ceiling wall 20 due to the contraction of the power supply connection unit 3, and the illumination device 1 can be attached. Therefore, the lighting device 1 can be easily attached even if the size and shape of the hole 21 in which the socket 22 is provided are different.

  FIG. 6 is a side sectional view showing still another example of attachment of the lighting device 1. According to this, the socket 22 is provided on the inclined surface in the hole 21. As shown in the figure, the power supply connection part 3 contracts, the contact surface 2a of the illumination part 2 comes into contact with the ceiling wall 20, and the illumination device 1 can be attached.

  According to the present embodiment, the base 4 is fitted into the socket 22 in the hole 21 that is recessed in the ceiling wall 20 (installation surface), and one end of the power connection part 3 that is elastically expandable is connected to the base 4. . The other end of the power supply connection unit 3 is connected to a flat illumination unit 2 having a light emitting element 12. Thereby, the illumination part 2 is pulled by the shrinkage | contraction by the elasticity of the power supply connection part 3, and the contact surface 2a of the flat illumination part 2 contact | abuts to the installation surface around the hole part 21, and is attached. Therefore, the existing downlight arranged in the holes 21 having different sizes and shapes can be easily replaced with the lighting device 1 including the light source 13 having the light emitting element 12 and the low power consumption.

  Moreover, since the power supply connection part 3 has the electric cord containing a conducting wire and the elastic cover 6 that covers the electric cord, the power supply connection part 3 that expands and contracts by elasticity can be easily realized.

  Moreover, since the power supply connection part 3 and the illumination part 2 were made detachable, the illuminating device 1 can be attached easily.

  In addition, an electrode made of a magnetic material is provided on one of the power supply connection part 3 and the illumination part 2, and an electrode made of a magnet is provided on the other. Then, the magnetic body and the magnet are engaged and disengaged by the rotation, and the power supply connection unit 3 and the illumination unit 2 are attached and detached. Therefore, the power supply connection unit 3 and the illumination unit 2 can be easily attached and detached.

  The housing 10 may be formed so as to protrude into the hole 21, and a part or all of the light source 13 and the mounting substrate 11 may be disposed in the hole 21. However, the illumination device 1 in the hole 21 can be made smaller by arranging the light source 13 and the base 4 on the opposite side with respect to the contact surface 12a. Furthermore, the lighting device 1 in the hole 21 can be made smaller by disposing the mounting substrate 11 forming the power supply substrate of the light source 13 and the base 4 on the opposite side to the contact surface 12a. Therefore, the lighting device 1 can be attached even if the hole 21 is small.

  Next, FIG. 7 is a side cross-sectional view showing the illumination device of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In this embodiment, the power supply substrate 14 of the light source 13 is provided separately from the mounting substrate 11. Other parts are the same as those in the first embodiment.

  A power supply substrate 14 provided with a power supply circuit is disposed inside the base 4. Thereby, the illuminating device 1 in the hole part 21 can be comprised small, and the illuminating device 1 can be attached even if the hole part 21 is small. In addition, since the power supply circuit is not provided on the mounting substrate 11, the illumination unit 2 can be thinned.

  Next, FIG. 8 is a side sectional view showing the lighting apparatus of the third embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In this embodiment, the power supply substrate 14 of the light source 13 is provided separately from the mounting substrate 11. Other parts are the same as those in the first embodiment.

  The power supply board 14 provided with the power supply circuit is arranged inside the connecting portion 2a. As described above, the connecting portion 2b and the power source connecting portion 3 are formed in a size that fits inside a circle having a diameter of 80 mm in a cross section parallel to the contact surface 2a. Thereby, the illuminating device 1 can be comprised small and the illuminating device 1 can be attached to the hole 21 in which a G80 size light bulb enters. In addition, since the power supply circuit is not provided on the mounting substrate 11, the illumination unit 2 can be thinned.

  Further, when the connecting portion 2b and the power source connecting portion 3 are formed to have a size that fits inside a circle having a diameter of 50 mm in a cross section parallel to the contact surface 2a, the lighting device 1 is attached to the hole portion 21 into which the G50 size bulb enters. be able to.

  Next, FIG. 9 is a side cross-sectional view showing the illumination device of the fourth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. The present embodiment is different from the first embodiment in the configuration of the power supply connecting portion 3. Other parts are the same as those in the first embodiment.

  The power supply connection portion 3 is formed by covering a power supply coat 5 having a conductive wire with a cover 7. The power cord 5 is formed in a spiral shape and expands and contracts due to elasticity. Thereby, the power connection part 3 expands and contracts due to the elasticity of the power cord 5. The cover 7 is formed of a soft resin or the like and expands and contracts following the power cord 5. The cover 7 may be omitted.

  Since the power connection part 3 has the spiral power cord 5, it is formed larger in the radial direction of the base 4 than in the first embodiment. Thereby, although there is a limit to the size of the hole 21 (see FIG. 1) in which the power supply connection part 3 can be accommodated, the illumination part 2 is pulled by the contraction due to the elasticity of the power supply connection part 3 as in the first embodiment. The contact surface 2 a of the flat illumination unit 2 is attached in contact with the periphery of the hole 21. Therefore, the existing downlights arranged in the holes 21 having different sizes and shapes are used as the lighting device 1 having the low power consumption light source 13 (see FIG. 1) having the plurality of light emitting elements 12 (see FIG. 1). Can be easily replaced.

  As in the second embodiment, the power supply board 14 (see FIG. 7) may be disposed on the base 4, and as in the third embodiment, the power supply board 14 (see FIG. 8) is disposed on the connecting portion 2b. Also good.

  Next, FIG. 10 is a side cross-sectional view showing the lighting apparatus of the fifth embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the shape of the housing 10 of the illumination unit 2 is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  The illumination unit 2 is formed such that a front surface 2c facing the contact surface 2a is inclined with respect to the contact surface 2a. Thereby, it can illuminate with the inclined surface of the front surface 2c of the illumination unit 2 directed in a desired direction. For example, illumination can be performed from the ceiling wall 20 in the room toward the side wall, or illumination can be performed from the end of the ceiling wall 20 toward the center of the room. Further, illumination can be performed from the indoor side wall toward the floor surface obliquely below or the ceiling wall obliquely above. In addition, you may form the front surface 2c of the illumination part 2 of the illuminating device 1 of 2nd-4th embodiment in the same inclined surface.

  In 1st-5th embodiment, although the illuminating device 1 is attached to the installation surface of the ceiling wall 20 indoors or outdoors, you may attach to the installation surface which consists of a wall surface of a side wall or a floor surface. Further, the light emitting element 12 may be formed of another light emitting element with low power consumption such as an EL element. Thereby, the power consumption of the light source 13 can be made lower than incandescent bulbs and fluorescent tubes having the same brightness.

  Further, the light source 13 may have a configuration including a light guide plate. 11 and 12 are a side sectional view and a bottom view showing the light source 13 having a light guide plate. The light emitting element 12 is provided in the central portion of the mounting substrate 11, and the light guide plate 15 arranged so as to overlap the mounting substrate 11 is provided with an insertion hole 15 a through which the light emitting element 12 is inserted in the central portion. Although not shown, the back surface of the light guide plate 11 is formed on an inclined surface whose outer peripheral side is inclined to the front surface side, and a reflective film is provided.

  Light emitted from the light emitting element 12 enters the light guide plate 15 from the peripheral wall of the insertion hole 15a, is guided through the light guide plate 15, and is emitted from the front surface 2c (see FIG. 1). Thereby, the quantity of the light emitting element 12 can be reduced and a wide range can be illuminated. The light emitting element 12 may be disposed facing the outer periphery of the light guide plate 15.

  According to the present invention, it can be used for an illumination device including a light emitting element such as an LED or an EL element.

DESCRIPTION OF SYMBOLS 1 Illumination device 2 Illumination part 2a Contact surface 2b Connection part 3 Power supply connection part 4 Base 5 Power supply cord 6, 7 Cover 10 Housing 11 Mounting board 12 Light emitting element 13 Light source 14 Power supply board 15 Light guide plate 20 Ceiling wall 21 Hole part 22 Socket

Claims (7)

A base that fits into a socket for power supply provided in a hole recessed in the installation surface; a power supply connection part that is attached to the base and is elastically expandable;
An illumination unit connected to the power source connection unit, which is located on a light emission surface that emits light from an internal light source and on the back side of the light emission surface, and abuts on the installation surface around the hole portion An illumination part having a contact surface ,
The power supply connection unit causes the contact surface of the illumination unit to abut on the installation surface around the hole portion by a contraction force that returns to a contracted state due to elasticity when the illumination unit is attached to the installation surface. A lighting device.   The lighting device according to claim 1, wherein the power supply connecting portion includes an electric cord including a conductive wire and an elastic cover that covers the electric cord. The lighting device according to claim 1 or claim 2, characterized in that the detachable and the illuminating unit and the power connections. An electrode made of a magnetic material provided on one of the power supply connection part and the illumination part; and an electrode made of a magnet provided on the other side and adsorbed to the magnetic material to be conducted; The magnetic body and the magnet are engaged with each other by rotating in one direction with respect to the part, and the illuminating unit is attached to the power supply connecting part, and the magnetic body and the magnet are rotated in the other direction. The illuminating device according to claim 3 , wherein the illuminating unit is detached from the power supply connecting unit by releasing the engagement with the power source connecting unit. The lighting device according to any one of claims 1 to 4 , wherein a power supply substrate of the internal light source is disposed inside the base. Lighting device according to any one of claims 1 to 5 wherein the illumination unit, wherein the light emitting surface is inclined relative to the contact surface. The illumination device according to any one of claims 1 to 6 , wherein the internal light source is a light emitting element including an LED or an EL element.

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