JP6214883B2 - LED lighting device - Google Patents

Description

  The present invention relates to an LED lighting device using an LED element as a light source, and more particularly to a ceiling-mounted LED lighting device directly attached to a ceiling.

2. Description of the Related Art In recent years, due to an increase in environmental awareness, a self-powered light bulb type LED lamp using an LED element excellent in power saving as a light source has been widespread. More recently, lighting devices using LED elements have also been developed and introduced into the market for ceiling-mounted downlights and ceiling-mounted ceiling lights.
The ceiling-embedded downlight is for making a large hole in the ceiling surface, and it is necessary to reinforce the hole and reinforce the hole, which takes time during construction. Then, the illuminating device which does not open a big hole is examined (patent document 1, 2).
In addition, the ceiling-mounted ceiling light is a device in which a lighting device having a hook ceiling adapter is attached to a hook ceiling body attached to the ceiling surface. Recently, a ceiling light with a small thickness has been studied (patent document). 3).

For example, in the illumination device described in Patent Document 1, a base plate to which a power feeding unit, an LED, and a lighting device on the same plane as the LED are attached is directly screwed to a ceiling surface with an attachment screw. An insertion hole into which a cylindrical power feeding part is inserted is formed on the surface, and a power supply power line is connected to the power feeding part inserted into the insertion hole. Accordingly, an illumination device that can be directly attached to the ceiling surface without providing a large hole in the ceiling surface is provided.
In addition, the lighting device described in Patent Document 2 includes a light source and a power block that supplies power to the light source, and a speed at which an external electric wire is electrically connected to the interior of the fixture body attached to the ceiling surface. Provided is a lighting fixture that includes a connection terminal and has improved workability while being thin.

  The illumination device described in Patent Document 3 includes an illumination module, a power supply unit that supplies power to the illumination module, a chassis that holds the illumination module and the power supply unit, and a hooking ceiling adapter that attaches the chassis to the hooking ceiling body. The lighting module, the power supply unit, and the hooking ceiling adapter are arranged on the chassis so as not to overlap each other with respect to the hooking sealing body. As a result, the protruding heights of the lighting module, the power supply unit, and the hooking ceiling adapter from the hooking ceiling body can be reduced, and a lighting device that is reduced in thickness is provided.

Japanese Patent No. 4565307 JP2011-233272A JP2011-134684A

However, in the illuminating device described in Patent Documents 1 and 2, the translucent cover is removed from the illuminating device body, the base portion of the illuminating device body is screwed to the ceiling surface, and the translucent cover is attached again. There is a possibility that the LED element may be damaged at the time of attachment, and the lighting device cannot be easily attached.
Moreover, in the illuminating device described in Patent Document 3, the height from the ceiling surface to the illuminating device lower surface cannot be made thinner than the thickness obtained by adding the thickness of the hooking ceiling body and the thickness of the hooking ceiling adapter. It is a device.

  On the other hand, an external power line (F cable or the like) drawn from the ceiling surface is connected to the lighting device body. However, in the connection structures disclosed in Patent Documents 1 to 3, the external power line is connected to the lighting device body. When inserted into the unit, the external power line may come into contact with the circuit board, LED element, electronic component, and the like mounted inside the lighting device body, and may be damaged.

The present invention has been made as a result of intensive studies to solve the above-described problems. When an external power supply line is connected to a lighting device main body, a circuit board and an LED mounted inside the lighting device main body are provided. Provided is an LED lighting device that can prevent damage to elements, electronic components, and the like.
In addition, the present invention provides an LED lighting device in which an external power supply line and a lighting device main body are easily connected and can be easily attached to a ceiling surface or the like.

In order to solve the above-mentioned problem, in the invention according to claim 1,
In the LED lighting device having the LED lamp body provided with the external power line insertion portion,
Wherein the external power line insertion portion, provided an insertion regulation means for regulating the LED lamp insertion range of the main body internal side of the external power supply line,
The insertion restricting means is a stopper member inserted in a lower end portion of the external power line insertion portion,
The stopper member has a pressing portion and a stopper portion, and the stopper portion is inserted into the external power supply wire insertion portion via a circuit board mounted in the LED lamp body, and the pressing portion is Fix it to the LED lamp body via the circuit board,
A groove portion is formed in the pressing portion, and a connection wiring to the circuit board is inserted into the groove portion .
In the invention of claim 2 , the circuit board is a circuit board in which an LED board on which an LED element is mounted and a lighting circuit board that drives the LED element to be lit are configured on the same surface. To do.
Also In the invention of claim 3, wherein the groove, the locking projection of the wiring is formed, characterized in Tei Rukoto.
According to a fourth aspect of the present invention, the external power line insertion portion is a quick connection terminal storage member provided on the central axis of the upper surface portion of the LED lamp body.

According to the present invention described above, the external power supply line insertion portion provided in the LED lamp body is provided with the insertion control means for restricting the insertion range of the external power supply line to the inside of the LED lamp body. When connecting the external power supply line to the lighting device main body, it is possible to prevent damage to the circuit board, the LED element, the electronic component and the like mounted in the lighting device main body.
Further, according to the present invention, the connection between the external power line and the lighting device main body is simple, and the LED lighting device can be easily attached to the ceiling surface or the like.

The external appearance perspective view before the attachment seen from the ceiling surface side of the LED lighting apparatus concerning this embodiment The external appearance perspective view before the attachment seen from the to-be-irradiated surface side of the LED lighting apparatus concerning this embodiment External appearance perspective view seen from the ceiling surface side of the LED lighting device according to the present embodiment The external appearance perspective view seen from the to-be-irradiated surface side of the LED lighting apparatus concerning this embodiment External perspective view of the connecting plate according to the present embodiment viewed from the ceiling surface side External perspective view of the connecting plate according to this embodiment as seen from the irradiated surface side The front view seen from the ceiling surface side of the connection board concerning this embodiment Side view of the connecting plate according to the present embodiment as viewed from the direction of FIG. 7X. FIG. 7Y-Y cross-sectional view of the connecting plate according to the present embodiment. External perspective view of the LED lamp according to this embodiment as seen from the ceiling surface side External perspective view of the LED lamp according to this embodiment viewed from the irradiated surface side The front view which looked at the LED lamp concerning this embodiment from the ceiling surface side FIG. 12X-X sectional view of the LED lamp according to the present embodiment. 12Y-Y sectional view of the LED lamp according to this embodiment. 13 is an enlarged view of the vicinity of the quick connection terminal storage portion in FIG. 13 according to the present embodiment. External perspective view of quick connection terminal according to this embodiment External perspective view of the quick connection terminal storage according to the present embodiment The front view which looked at the quick connection terminal storage part concerning this embodiment from the ceiling surface side 18X-X sectional view of the quick connection terminal storage portion according to the present embodiment. The exploded perspective view which looked at the LED lamp concerning this embodiment from the upper part The exploded perspective view which looked at the LED lamp concerning this embodiment from the lower side (a LED element and electronic parts are omitted) Mounting surface side front view of substrate according to this embodiment Front side view of back side of substrate according to this embodiment Mounting surface side front view of another form of the substrate according to this embodiment The back side front view of another form of the board concerning this embodiment External perspective view of the shielding plate according to this embodiment viewed from the ceiling side External perspective view of the shielding plate according to the present embodiment viewed from the irradiated surface side Enlarged sectional view of the vicinity of the light guide plate according to this embodiment The external appearance perspective view before the attachment seen from the to-be-irradiated surface side of the LED lighting apparatus concerning another embodiment of this invention The perspective view seen from the surface side of the stopper member concerning the embodiment of the present invention Similarly perspective view from the back side of the stopper member Similarly side view of stopper member External perspective view of another quick connection terminal according to the present embodiment

  Preferred embodiments of the present invention will be described below with reference to the drawings. This embodiment is an example, and the present invention is not limited to this.

  As shown in FIGS. 1 to 4, the LED lighting device 100 according to the present embodiment includes a connecting plate 1 and an LED lamp body 2, and a diameter of 15 mm from which an external power line (F-cable) 3 comes out. The connecting plate 1 is screwed to the ceiling surface 4 having a hole 4-1 (not limited to this diameter), and the LED lamp body 2 is detachably attached to the connecting plate 1. When the LED lamp body 2 is mounted on the connecting plate 1, the LED lamp body 2 and the external power supply line 3 are connected, and the LED lighting device 100 can be used as a downlight. If the hole 4-1 has a diameter of 15 mm or less, no special reinforcement is applied to the ceiling, so that the LED lighting device can be attached with good workability.

  The connecting plate 1 is made of a stainless steel plate by punching, pressing, bending, or the like. As shown in FIGS. 5 to 9, the connecting plate 1 has a disk-shaped ribbon-shaped through hole 13-1 formed symmetrically in the center as shown in FIGS. 5 to 9. The left and right fan-shaped portions are rotation restricting hole portions 13. In addition, a circular opening is formed in the central portion of the through hole 13-1, that is, the central portion of the connecting plate 1, and the circular opening serves as the connecting plate power supply insertion portion 11. In addition, the connection plate 1 does not need to be plate-shaped, and includes a three-dimensional member such as a disk shape or a box shape.

  A pair of connecting plate positioning protrusions 12 project from the edge of the connecting plate power supply insertion portion 11. The connecting plate positioning protrusion 12 is a curved piece having a circular arc cross section, and stands in the direction of the ceiling surface 4 along the rotation axis of the connecting plate 1 (here, a diameter of 14 mm having the same center as the connecting plate 1). 2 curved pieces extending from arcs of a predetermined length facing each other so as to consist of a part of the outer wall of a virtual cylinder having an outer wall thickness of 1 mm and a height of 15 mm). The pair of connecting plate positioning protrusions 12 facilitate positioning of the connecting plate 1 with respect to the ceiling surface hole 4-1, and the connecting plate 1 can be easily attached to the ceiling surface 4.

  Further, the connecting plate 1 includes a plurality of rotating engaging portions 14 for rotating the LED lamp main body 2 to engage with the connecting plate 1 in the circumferential direction of the connecting plate 1 (here, four locations at intervals of 90 degrees). ) Is provided. The rotation engaging portion 14 has a substantially fan-shaped opening 14-1 and a locking tongue piece 14-2. As shown in FIGS. 6 and 8, the locking tongue piece 14-2 is integrally formed on the back surface side (the surface side to be joined to the LED lamp body 2) of the connecting plate 1, and the opening tongue 14-1. It is smaller than the opening and is formed in a similar shape to the opening 14-1. The locking tongue piece 14-2 is installed so as to face the opening 14-1 from the edge of the opening 14-1 along the circumferential direction (rotation direction) of the connecting plate 1. A claw 14-3 is formed at the tip of the locking tongue piece 14-2 to prevent the rotational engagement from being released. Reference numeral 13-2 denotes a screw hole for screwing the connecting plate 1 to the ceiling surface 4.

  As shown in FIGS. 10 to 14 and 20, the LED lamp body 2 includes a housing 21, a quick connection terminal 22 to which an external power supply line housed in the housing 21 is connected, and a quick connection terminal 22. , A board 26 on which a plurality of LED elements 24 and various electronic components 25 constituting a lighting circuit for lighting the LED elements 24 are mounted, and a shielding plate 27 that covers the electronic components 25. The light-transmitting cover 28 covers the lower opening of the housing 21.

  The casing 21 is made of aluminum and has a hollow bottomed cylinder with an open lower end and is formed into a flat shape with a low height. The upper surface portion 21-1 of the housing 21 joined to the connecting plate 1 is formed with a concave portion 21-2 that is recessed in a circular shape toward the inside of the housing 21. Further, a protruding edge portion 21-8 having the same height as the thickness of the connecting plate 1 is formed on the outer peripheral edge of the upper surface portion 21-1, and when the LED lamp main body 2 is attached to the connecting plate 1, it is integrated. It becomes the structure which becomes. In addition, the said recessed part 21-2 becomes the depth which the latching tongue piece 14-2 of the said connection board 1 can enter.

A small piece-shaped rotation restricting protrusion 21-6 is provided at the center of the recess 21-2, and an elliptical cylindrical LED lamp positioning protrusion 21-4 is provided upright at the center. Yes. As shown in FIG. 13, the rotation restricting projection 21-6 is integrally formed on the upper surface portion of the recess 21-2, and the inside is hollow to accommodate a quick connection terminal accommodating portion 23 described later.

  The LED lamp positioning protrusion 21-4 is a cylindrical body having a substantially elliptical cross section, and the left and right side surfaces where the rotation restricting protrusion 21-6 is not formed are thin so that the engaging groove 21-5 faces. The connecting plate positioning protrusion 12 is engaged with the engaging groove 21-5. The LED lamp positioning protrusion 21-4 also serves as the LED lamp power supply insertion portion 21-3, and the binding terminal storage portion 23 and the binding terminal 22 are stored in the LED lamp power supply insertion portion 21-3 as will be described later. ing.

  Here, the outer diameter of the LED lamp positioning protrusion 31-4 is 14 mm, and the depth of the engagement groove 21-5 is 1 mm. Further, a cylindrical LED lamp positioning protrusion 21-4 having an outer diameter of 14 mm extending toward the connecting plate 1 is formed at the peripheral edge of the LED lamp power supply insertion portion 21-3 (in other words, In this embodiment, the thick part of the cylindrical LED lamp power supply insertion part 21-3 is the LED lamp positioning protrusion 21-4, and the thin part is the engagement groove 21-5).

  The rotation restricting projection 21-6 is inserted into the turn restricting hole 13 of the connecting plate 1 and can be turned at an angle that forms a fan of the turn restricting hole 13, and the LED lamp main body 2 is turned by this turning angle. The rotation range is determined. The groove width of the engaging groove 21-5 is also formed wider than the width of the connecting plate positioning protrusion 12 corresponding to the pivotable angle.

  Depending on the structure and dimensions of these various members, the engagement body formed when the connecting plate positioning protrusion 12 and the LED lamp positioning protrusion 21-4 are engaged with each other is a cylindrical space having an outer diameter of 14 mm in a thin state. It is a structure that fits in. Thereby, even if it connects via the connection board 1, the flat LED lighting apparatus 100 is realizable, and the opening part of each power supply insertion part does not shift | deviate with respect to the hole 4-1 provided in the ceiling surface 4. It has a structure in which the opening surfaces are easily aligned and easy to install.

  On the other hand, a trapezoidal rotation locking piece 21-7 extending toward the center direction of the LED lamp body 2 is formed on the upper surface portion 21-1 of the casing 21 in the vicinity of the stepped portion of the recess 21-2. Yes. The rotation locking piece 21-7 is formed in a size that can be inserted into the opening 14-1 of the connecting plate 1. Reference numeral 21-9 denotes a screw hole for fixing a substrate 26 and a shielding plate 27 described later.

  When the rotation locking piece 21-7 is inserted into the opening 14-1 and rotated after the housing 21 is joined to the lower surface side of the connecting plate 1, the upper surface of the locking tongue piece 14-2 of the connecting plate 1 is obtained. It will be engaged with the part. At this time, since the claw 14-3 is formed at the tip of the locking tongue piece 14-2, it can be seen that the mounting of the LED lamp body 2 is completed by a click feeling. Further, as described above, the rotation after the housing 21 is mounted is restricted by the claw 14-3 so that it cannot be inadvertently removed, but the fall prevention that connects the connecting plate 1 and the LED lamp body 2 is prevented. An additional chain or a lock structure for restricting and releasing the rotation may be provided.

  As shown in FIG. 16, the quick connection terminal 22 is composed of a pair of connection terminals 22-1 and is formed in an L shape by processing a metal plate. A pair of left and right upper support pieces 22-3 and a lower support piece 22-4 are inserted, and a contactor 22-2 is integrally provided on the lower side. One of the lower support pieces 22-4 is a presser piece 22-5 whose upper end is bent downward, and the contact 22-2 is bent outward in a substantially V shape. The connection terminal 22-1 has the same structure as a known quick connection terminal used for a power supply terminal block or the like.

  The core wire of the external power supply line 3 (F cable) is inserted into such a quick connection terminal 22, and the power supply line 3 is supported by the upper support piece 22-3 and the lower support piece 22-4. The contact 22-2 is a leaf spring, and is pressed against and contacted with the power input surface of the board 26 as will be described later. The external connection line 3 and the board 26 are electrically connected by the quick connection terminal 22. Connected.

  The quick connection terminal 22 is accommodated in a quick connection terminal accommodating portion 23 as shown in FIGS. The quick connection terminal accommodating portion 23 is formed of an electrically insulating resin, and is formed in an inverted T shape as a whole. Specifically, the binding terminal storage portion 23 includes a substantially elliptical cylindrical portion 23-2 having an opening 23-1 into which the external power supply line 3 is inserted, and a rectangular parallelepiped shape having a hollow inside. Bottom extending portion 23-3, two connecting terminals 22-1 are accommodated in the vertical cylindrical portion 23-2, and contacts 22-2 are accommodated in the bottom extending portion 23-3. .

  The shape of the opening 23-1 of the vertical cylinder part 23-2 is substantially elliptical, and an insulating plate 23-4 is provided in the center part. As shown in FIG. The housing space 23-6 divided into two having the electric wire insertion hole 23-5 is provided. The two connecting terminals 22-1 are arranged apart from the accommodation space 23-6, and the insulating plate 23-4 provided at the center extends to the opening 23-1, so that the creepage distance is large. Thus, sufficient insulation is ensured between the two core wires of the external power line and the two connecting terminals 22-1.

As shown in FIG. 13, the quick connection terminal storage portion 23 storing the quick connection terminals 22 is inserted from the inside of the housing 21, and the vertical tube portion 23-2 is the LED lamp positioning protrusion 21-4 of the housing 21. The bottom extension 23-3 is stored in the internal space of the rotation restricting projection 21-6.

  A stopper member 23-5 is inserted into the inner lower end portion of the quick connection terminal accommodating portion 23, and the front end portion of the external power supply line 3 inserted into the quick connection terminal 22 is mounted on the substrate 26 or the substrate 26. In other words, contact with LED elements, electronic parts, etc. is restricted, and damage to the interior parts is prevented. As shown in FIG. 15, the stopper member 23-5 is in a state of being elastically clamped near the contact 22-2 of the connecting terminal 22 here.

In this embodiment, the quick connection terminal for directly attaching the core wire of the external power supply line is used. However, a plug having an outer diameter of 14 mm is attached to the core wire of the external power supply wire, and the plug is inserted into the LED lamp body 2. A connector may be stored. Further, a contact that is pressed against and contacted with the power input surface of the substrate 26 may be provided on the other end side of the connector on the plug insertion side, similarly to the above-described quick connection terminal 22.
Moreover, in this embodiment, although the quick connection terminal 22 was accommodated in the LED lamp main body 2, it is not limited to this, The quick connection terminal 22 may be attached to the connection board power supply insertion part 11 of the connection board 1, and also a connection terminal. 22-1 and contact 22-2 are divided, the connecting terminal 22-1 is attached to the connecting plate 1, the contact 22-2 is attached to the LED lamp body 2, and the LED lamp body 2 is attached to the connecting plate 1. Further, the connecting terminal 22-1 and the contact 22-2 may be connected to form an integral quick-connecting terminal.
Moreover, the power supply line connected to the lighting circuit may be extended from the LED lamp main body 2, a plug may be attached to the tip of the power supply line, and the external power supply line may be inserted into the plug.

Various known LEDs can be used as the LED element 24. In this embodiment, a high-luminance type LED element that emits white light for illumination is used.

The electronic component 25 constituting the lighting circuit is a known electronic component such as various diodes, capacitors, ICs, resistors for performing overcurrent protection, noise cut, rectification, smoothing, dimming control, and the like.

  The said board | substrate 26 is a glass epoxy board | substrate with which copper foil was affixed on both surfaces, and the LED element 24 and the electronic component 25 are mounted in the single side | surface. FIG. 22 is the mounting surface side (front side) of the substrate 26, a circular mounting area A on the center side of the substrate 26, and a belt-like semi-annular shape (approximately 3/4 round) outside the mounting area A Mounting region B is formed. The LED element 24 is mounted in the mounting area A, and the electronic component 25 is mounted in the mounting area B. Moreover, a through hole 26-1 is provided in a part of the mounting region B, and a large electrolytic capacitor or the like is installed sideways as compared with other electronic components. Reference numeral 26-5 denotes a screw hole for fixing the substrate 26 to the housing 21.

Between the mounting area A and the mounting area B, the copper foil is removed leaving a portion where current flows, and an annular area C (high thermal resistance area having a small thermal conductivity coefficient) having a higher thermal resistance than the mounting areas on both sides, and It has become. The width of the ring is formed larger than the thickness of the substrate, and the heat generated in the LED element 24 reaches the substrate back surface earlier than the mounting region B.
Furthermore, you may form the slit which cut off the board | substrate of the annular | circular shaped area | region C and penetrated. As a result, the thermal resistance of the annular region C can be further increased.

FIG. 23 is a back surface side of the substrate 26, and a copper foil having substantially the same shape as the mounting regions A and B is attached to the back surface of the substrate corresponding to the mounting regions on the front side. The concave portion 21-2 of the housing 21 forms a circular convex portion (21-8 shown in FIG. 21) when viewed from the inside, and an annular concave portion (21 shown in FIG. 21) around the convex portion. -9). The copper foil affixed to the back surface position corresponding to the mounting area A is in contact with the inner wall of the casing 21 forming the convex portion 21-8, and the heat generated in the LED element 24 is generated by the electronic component 25. Without being conducted, the heat is conducted to the housing 21 through the copper foil on the back surface of the substrate, and is radiated from the upper surface and the side surface forming the outer wall of the housing 21.
In addition, heat dissipation can be further improved by applying an electrically insulating heat dissipating grease or sandwiching a sheet to the contact portion.

  The copper foil affixed to the back surface position corresponding to the mounting region B is located in the annular recess 21-9 and does not directly contact the housing. Through holes are formed in the mounting area B, and the leads of some electronic components 25 are exposed on the back surface of the substrate. However, since the mounting area B is located in the recess 21-9, the leads and metal Short circuit is prevented without contact with the housing.

Between the mounting area | region B and the said annular | circular shaped recessed part 21-9, you may be filled with an electrically insulating curable thermal radiation resin. Thereby, the heat generated in the electronic component 25 is easily transferred to the casing 21 through the copper foil on the back surface, and the temperature rise of the electronic component 25 is suppressed. Further, since the heat conductivity of the aluminum casing is about 100 times larger than the heat conductivity of the heat radiation resin, the heat generated in the LED element 24 does not flow back to the electronic component 25, and the LED element. 4 and the electronic component 25 are effectively radiated from the outer wall of the casing 21.
Moreover, even if some impact is applied to the LED lamp main body 2 by the cured resin, the lead does not contact the inner wall of the housing 21, so that the resin filling also improves the reliability.

Furthermore, as shown in FIG. 23, a power input surface 26-2 that contacts the contact 22-2 of the quick connection terminal 22 is provided on the back surface of the substrate 26. The board input surface 26-2 is a copper foil, and is provided at a back surface position corresponding to the mounting region A. A power supply path 26-3 for supplying power to the mounting region B from the power input surface 26-2 is provided. Is provided. The power input surface 26-2 and the power supply path 26-3 are separated from the copper foil provided at the back surface position corresponding to the mounting area A, and the power supply path 26-3 is the above-mentioned of the casing 21. A groove (not shown) is formed in a part of the convex portion 21-8 so as not to contact the surface of the convex portion 21-8. The power supply path 26-3 extends to the back surface of the mounting region B, and the power reaches the power supply unit 26-4 in the mounting region B through the through hole.
If the above-described electrically insulating heat radiation sheet is provided on the surface of the convex portion 21-8, it is not necessary to provide a groove for the power supply path 26-3, and there is no need for alignment, which is preferable in manufacturing. .

Further, the shape of the copper foil of the substrate 26 is formed as shown in FIGS. 24 and 25, the area of the copper foil in the mounting region A is increased, and the convex portion having a shape contacting the entire surface is formed on the upper surface portion of the housing 21. You may provide in 21-1. Thereby, the temperature rise of the LED element 24 is further suppressed.
Moreover, the bottom extension part 23-3 and the contact 22-2 of the quick connection terminal accommodating part 23 may be extended long, and the power input surface 26-2 may be provided at the back surface position corresponding to the mounting region B.

In the present embodiment, the LED element 24 is mounted in the mounting area A and the electronic component 25 is mounted in the mounting area B. On the contrary, the electronic component 25 is mounted in the mounting area A and the mounting area B is mounted. The LED element 24 may be mounted. Accordingly, the inner wall of the upper surface portion 21-1 of the housing 21 is formed with a circular concave portion at the center and an annular convex portion around it.
In addition, the LED element mounting board and the lighting circuit board are separated from each other, and the lighting circuit board is not disposed on the optical axis of the LED element so that both boards are positioned on substantially the same plane. The LED lamp body can be made flat.

  As shown in FIG. 27, the shielding plate 27 is made of a polycarbonate resin containing titanium oxide that does not transmit light, and has a morning glory-shaped curved surface with both upper and lower ends opened, and is formed into a hollow cylinder. . A flange portion 27-1 extending inward is provided at the peripheral edge portion of the upper end surface of the opening, and a screw hole 27-4 is formed in the flange portion 27-1. The upper surface of the flange portion 27-1 is joined to the annular region C between the mounting region A and the mounting region B of the substrate 26, and the substrate 26 is sandwiched between the upper surface portion 21-1 of the housing 21. And is screwed to the upper surface portion 21-1.

  The opening lower end surface 27-2 is greatly expanded outward and is shaped like a bowl. The lower end surface 27-2 covers and hides the mounting region B so that the electronic component 25 cannot be seen from the outside, and its bowl-like endmost edge is in contact with the inner wall of the housing 21. Further, the inner wall surface 27-3 of the shielding plate 27 forms a mirror-diffused diffuse reflection surface, which reflects the light emitted from the LED element 24 without absorbing it, and emits the light from the LED lamp 2 without loss. It has a function to make it.

  The translucent cover 28 is molded into a circular dome shape using polycarbonate. As shown in FIG. 28, a protruding portion 28-1 is provided at the end of the translucent cover 28 toward the opposite side of the light irradiation direction, and the edge of the lower end surface 27-2 of the shielding plate 27 is provided. It is fixed in contact with the inner wall portion of the housing 21.

  A space is formed between the protruding portion 28-1 and the shielding plate 27, and the light reflected by the translucent cover 28 is diffusely reflected by the inner wall surface 27-3 of the shielding plate 27, and this is repeated. Thus, the light reaches the end side of the translucent cover 28. As a result, the entire surface of the translucent cover 28 including the portion covering the shielding plate 27 can be illuminated.

Further, an acrylic annular light guide plate 29 may be inserted between the shielding plate 27 and the translucent cover 28. As shown in FIG. 28, the end surface on the inner peripheral side of the light guide plate 29 forms a light introducing surface 29-1, and the surface located on the shielding plate 27 side is a light emitting surface 29-2, so that scattered light is transmitted. The light is emitted toward the light cover. Thereby, the irradiation light from the part which covers the shielding board 27 can be increased further, and a translucent cover can be made to shine more uniformly.
When the LED element 24 is mounted on the outer peripheral side of the substrate, such as when the LED element 24 is mounted in the mounting region B, a light introduction surface is provided on the outer peripheral side of the disk-shaped light guide plate 29, and the disk-shaped entire surface is covered. By installing the light guide plate 29 as the light emitting surface between the shielding plate 27 and the translucent cover 28, the LED illumination device 100 in which the entire translucent cover emits light uniformly is obtained.

The LED lighting device 100 according to the present embodiment is attached to the ceiling surface 4 or a wall, which is a surface to be attached, as follows.
First, a hole 4-1 having a diameter of 15 mm is formed in the ceiling surface 4, and the external power supply line 3 is pulled out from the hole 4-1. Thereafter, the connecting plate positioning protrusion 12 of the connecting plate 1 is inserted into the hole 4-1, and at the same time, the external power line 3 is pulled out from the connecting plate power supply insertion portion 11, and the connecting plate 1 is screwed to the ceiling surface 4.
Next, the two core wires of the external power supply line are inserted from the opening 23-1 of the quick connection terminal storage portion 23 of the LED lamp body 2, and are inserted into the connection terminal 22-1.
Next, the engagement groove 21-5 of the LED lamp body 2 is engaged with the connecting plate positioning protrusion 12, and the rotation locking piece 21-7 of the LED lamp body 2 is rotated by the rotation engaging portion 14 of the connection plate 1. The LED lamp positioning protrusion 21-4 is inserted into the connecting plate power supply insertion portion 11 of the connecting plate so as to engage with the connecting plate.
Finally, the upper surface portion 21-1 of the LED lamp body 2 is joined so as to be in close contact with the connecting plate 1, the LED lamp 2 is rotated by a predetermined angle, and the LED lamp 2 is attached to the connecting plate 1. Thereby, the rotation locking piece 21-7 of the LED lamp body 2 is in a state of being engaged with the locking tongue piece 14-2 of the rotation engagement portion 14 of the connecting plate 1.

As described above, in the present embodiment, the connecting plate 1 is a single plate, and the housing 21 of the LED lamp 2 has a flat cylindrical shape, and sequentially transmits light from the side closer to the irradiated surface side. The cover 28, the shielding plate 27, the substrate 26, the convex portion 21-8 formed on the inner wall of the housing upper surface portion side 21-1, and the connecting plate 1, the rotation axis of each of these members and the LED element The 24 optical axes are arranged so as to be substantially parallel. Thus, the LED lighting device 100 has a small amount of protrusion from the ceiling surface 4 and exhibits a good design.
In the present embodiment, the casing 21 has a cylindrical shape, but is not limited thereto, and may be a flat polygonal column having a quadrangular cross section.

  FIG. 29 shows an LED lighting device 200 showing another embodiment of the present invention. The LED lighting device 200 includes an LED lamp body 2, a board 26 (circuit board) mounted therein, a shielding plate 27, and a translucent cover 28, and the basic configuration thereof is as follows. Same as above. A fast connection terminal storage member 32 is fixed to the upper surface of the LED lamp body 2, and the quick connection terminal 31 is inserted therein.

  A stopper member 30 is fixed to the lower surface side of the substrate 26. As shown in FIGS. 30 to 32, the stopper member 30 has a pressing portion 30-1 and a pair of stopper portions 30-4 projecting on the back side thereof, and the pressing portion 30-1 is flat. The abutment surface portion 30-6 and the convex portion 30-7 are projected.

Two grooves 30-2 are formed on the convex portion 30-7 of the pressing portion 30-1, and a plurality of pairs of locking projections 30-3 are formed facing each other in the longitudinal direction of the grooves 30-2. Has been. Here, the locking protrusions 30-3 formed in the respective groove portions 30-2 are formed so as to be displaced from each other. The contact surface portion 30-6 is formed with a plurality of cutout portions 30-5 for inserting fixing screws.

  The quick connection terminal 31 includes a pair of connection terminals 31-1, and each connection terminal 31-1 is opposed to an upper support piece 31-2 and a lower support piece 31-3 as shown in FIG. In addition, a bent piece 31-6 is formed at the lower end, and a wiring connection hole 31-7 is opened in the bent piece 31-6. Further, one lower support piece 31-3 is formed with a folded piece portion 31-4, and the other lower support piece 31-3 is formed with a convex bay portion 31-5, and these folded piece portions 31-4 are formed. The external power line 3 inserted into the connecting terminal 31-1 is sandwiched between the convex bay portion 31-5.

  The outer shape of the binding terminal storage member 32 is the same as that of the LED lamp positioning protrusion 21-4, and although not shown, a pair of connection terminals 31-1 are provided inside as in the case of the quick connection terminal storage 23. A partition for isolating and storing is formed.

  The stopper member 30 has a lower end of the bundling terminal storage member 32 through an insertion hole 26-10 that opens the stopper portion 30-4 in the center of the substrate 26 and an insertion hole 21-10 that opens in the center of the upper surface of the LED lamp body 2. Interpolate into the part. At this time, the distal end portion of the stopper portion 30-4 is located near both side portions of the lower end bent portion 31-6 of the connection terminal 31-1. In this state, the fixing screw 33 is fixed to the upper surface portion of the LED lamp body 21 through the notch portion 30-5 of the pressing portion 30-1 and the screw hole 26-11 of the substrate 26. Thereby, the stopper member 30 is fixed to the back surface side of the upper surface portion of the LED lamp body 21 through the substrate 26, and there is a possibility that the stopper portion 30-4 is detached when the external power supply line 3 is inserted and the substrate 26 and the like are damaged. Disappear.

  Moreover, since the connection wiring with the board | substrate 26 connected with the wiring connection hole 31-7 of the connection terminal 31-1 is inserted in the two groove parts 30-2 of the holding | suppressing part 30-1, there is no play of wiring. As a result, damage to the substrate 26 and the like can be prevented.

  The external power line insertion control means of the present invention is not limited to the above-described embodiment, and is mounted inside the lighting apparatus body when the external power supply wire is inserted into the external power line insertion portion of the LED lamp body. What is necessary is just to be able to regulate the insertion range of the external power supply wire so as to prevent damage to the circuit board, LED element, electronic component, etc.

1: connecting plate 11: connecting plate power supply insertion portion 12: connecting plate positioning protrusion 13: rotation restricting hole portion 14: rotation engaging portion 2: LED lamp body 21: housing 22: fast connection terminal 23: fast connection Terminal housing portion 23-5: Stopper member 24: LED element 25: Electronic component 26: Substrate 27: Shielding plate 28: Translucent cover 29: Light guide plate 30: Stopper member 3: External power supply line 4: Ceiling surface 100: LED Lighting device 200: LED lighting device

Claims (4)

In the LED lighting device having the LED lamp body provided with the external power line insertion portion,
Wherein the external power line insertion portion, provided an insertion regulation means for regulating the LED lamp insertion range of the main body internal side of the external power supply line,
The insertion restricting means is a stopper member inserted in a lower end portion of the external power line insertion portion,
The stopper member has a pressing portion and a stopper portion, and the stopper portion is inserted into the external power supply wire insertion portion via a circuit board mounted in the LED lamp body, and the pressing portion is Fix it to the LED lamp body via the circuit board,
A groove portion is formed in the pressing portion, and a connection wiring to the circuit board is inserted into the groove portion . 2. The LED lighting device according to claim 1 , wherein the circuit board is a circuit board in which an LED board on which an LED element is mounted and a lighting circuit board that drives and drives the LED element are configured on the same surface. Wherein the groove, LED lighting device according to claim 1 or 2 locking protrusions of the wiring is formed, characterized in Tei Rukoto. The external power supply line through unit, LED lighting device according to any one of claims 1 to 3, wherein the LED lamp is a quick connect terminal housing member provided on the upper surface central axis of the body.