JP2011171070A - Illumination fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination fixture by which lighting power can be supplied to both of a fluorescent lamp and an LED unit without increasing the number of sockets. <P>SOLUTION: The illumination fixture 1 includes: the socket 5 to which a base 21 of the fluorescent lamp 20 is detachably connected; a lighting circuit for the fluorescent lamp by which the lighting power is supplied to the fluorescent lamp 20 via the socket 5; the LED unit 30 having light-emitting diodes 33 as a light source and detachably mounted on the socket 5; and the lighting circuit for the LED by which the lighting power is supplied to the LED unit 30 via the socket 5. The LED unit 30 includes the body 31 on which the light-emitting diodes 33 are arranged, and power receiving terminals 35a, 35b installed at a site opposed to the socket 5 in this body 31. In the socket 5, power feeding terminals 7a, 7b for the LED are installed which are electrically connected to the power receiving terminals 35a, 35b and supply the lighting power from an LED lighting circuit to the light-emitting diodes 33. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting fixture.

  Conventionally, there has been provided a lighting fixture that turns on a fluorescent lamp as a light source (see, for example, Patent Document 1).

JP 2004-47148 A

  The above-described lighting fixture is provided only with a socket dedicated to a fluorescent lamp, and in recent years, it has not been possible to attach and use a light-emitting diode that has become widespread as a light source for illumination. In order to supply an LED unit with a light emitting diode as a light source and supply lighting power to the fluorescent lamp and the LED unit in such a lighting fixture, a socket dedicated to the LED unit must be provided separately, and the number of parts There was a problem that increased.

  The present invention has been made in view of the above reasons, and its object is to provide a luminaire that can supply lighting power to both a fluorescent lamp and an LED unit without increasing the number of sockets. There is to do.

  In order to solve the above problems, the first invention is a socket to which a cap of a fluorescent lamp is detachably connected, a lighting circuit for a fluorescent lamp that supplies lighting power to the fluorescent lamp through the socket, and a light source An LED unit having a light emitting diode and detachably attached to the socket; and an LED lighting circuit for supplying lighting power to the LED unit through the socket, the LED unit including a main body on which the light emitting diode is disposed; The main body is provided with a power receiving terminal provided at a portion facing the socket, and the socket is electrically connected to the power receiving terminal, and the lighting power from the LED lighting circuit is supplied to the light emitting diode through the power receiving terminal. The power supply terminal for LED to supply is provided.

  According to a second invention, in the first invention, a mounting piece held between the socket and the base is provided integrally with the main body, and the power receiving terminal and the base pin of the fluorescent lamp are passed through the mounting piece. An insertion hole is provided.

  A third invention is characterized in that, in the first or second invention, the LED unit is mounted on the fluorescent lamp so that the light emitting diodes are arranged on the front side of the base.

  A fourth invention is characterized in that, in any one of the first to third inventions, a fluorescent lamp power supply terminal and an LED power supply terminal for supplying power to the fluorescent lamp are arranged on the same surface of the socket. To do.

  According to the present invention, lighting power can be supplied to both the fluorescent lamp and the LED unit without increasing the number of sockets.

The lighting fixture of Embodiment 1 is shown, (a) is a disassembled perspective view, (b) is a perspective view of the principal part which looked at the LED unit from the upper side. It is a block diagram of a lighting fixture same as the above. It is a disassembled perspective view of the lighting fixture of Embodiment 2. FIG. The lighting fixture same as the above is shown, (a) is a bottom view of a state where an LED unit is mounted on a fluorescent lamp, and (b) is a top view of a state where the LED unit is mounted on a fluorescent lamp. The lighting fixture of Embodiment 3 is shown, (a) is the disassembled perspective view which expanded the nozzle | cap | die part, (b) is the perspective view of the nozzle | cap | die part of the state which mounted | wore the fluorescent lamp with the LED unit. It is a perspective view which shows the socket of the lighting fixture same as the above. The lighting fixture same as the above is shown, (a) is an exploded perspective view in which the base portion is enlarged, and (b) is a perspective view of the base portion in a state where the LED unit is mounted on a fluorescent lamp. It is a top view of the state which shows the use condition of the lighting fixture same as the above and the LED unit is not mounted | worn. It is the disassembled perspective view which expanded the nozzle | cap | die vicinity of the lighting fixture of Embodiment 4. The lighting fixture same as the above is shown, (a) (b) is the exploded perspective view which expanded the nozzle | cap | die vicinity. It is a top view of the state which shows the use condition of the lighting fixture same as the above and the LED unit is not mounted | worn. It is a disassembled perspective view of the lighting fixture of Embodiment 5. FIG. The lighting fixture same as the above is shown, (a) is a bottom view of the socket, and (b) is a top view of the LED unit. The lighting fixture same as the above is shown, (a) is a sectional view for explaining the connection relationship when the LED unit is not used, and (b) is a sectional view for explaining the connection relationship when the LED unit is used.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
Embodiment 1 of this invention is demonstrated based on drawing. 1A is an exploded perspective view of the luminaire 1 according to the present embodiment, and FIG. 2 is a block diagram of the luminaire 1.

  The luminaire 1 is installed, for example, on a ceiling to illuminate a lower illumination space. As a light source, for example, a double ring fluorescent lamp 20 and an LED unit 30 using a light emitting diode (Light Emitting Diode) as a light source are provided. Can be used.

  As shown in FIG. 2, the lighting apparatus 1 includes a fluorescent lamp lighting circuit 3 including an electronic ballast that receives power supplied from a commercial power supply AC and supplies lighting power to the fluorescent lamp 20, and the commercial power supply AC using DC power. And an LED lighting circuit 4 that is supplied to the LED unit 30. In addition, since the circuit structure of the lighting circuit 3 for fluorescent lamps and the lighting circuit 4 for LED is conventionally known, the description is abbreviate | omitted.

  FIG. 1 is an exploded perspective view of a lighting fixture 1, and a disk-like fixture body 2 having a hooking sealing cap (not shown) detachably connected to a hooking sealing body (not shown) provided on the ceiling. And is used directly attached to the ceiling. A fluorescent lamp lighting circuit 3 and an LED lighting circuit 4 are attached to the fixture body 2, and a socket 5 for mounting a base 21 of the fluorescent lamp 20 is provided on the lower surface of the fixture body 2. Yes. A cover 19 formed in a dome shape with a semitransparent synthetic resin is detachably attached to the lower surface side of the instrument body 2 so as to cover the fluorescent lamp 20 and the LED unit 30 mounted on the socket 5.

  The lower surface of the socket 5 is formed in a substantially rectangular shape, and four insertion holes 6 into which four cap pins (not shown) provided on the cap 21 are respectively inserted are opened on the lower surface of the socket 5. is doing. Inside the socket 5, fluorescent lamp power supply terminals (not shown) that are electrically connected to the cap pins so as to face the respective insertion holes 6 are arranged. An output terminal of the fluorescent lamp lighting circuit 3 is connected to the fluorescent lamp power supply terminal, and the lighting power is supplied to the fluorescent lamp 20 having the base 21 attached to the socket 5. . A holding fixture 8 made of a leaf spring for holding the glass tube 22 of the fluorescent lamp 20 is provided on the lower surface of the fixture body 2.

  In addition, LED power supply terminals 7 a and 7 b for supplying power to the LED unit 30 are disposed on the lower surface of the socket 5. Here, one LED power supply terminal 7 a is connected to the positive output terminal of the LED lighting circuit 4, and the other LED power supply terminal 7 b is connected to the negative output terminal of the LED lighting circuit 4. .

  On the other hand, the LED unit 30 includes a main body 31 formed in a substantially disk shape from an insulating resin material, and a rectangular plate shape that is disposed so as to overlap the lower surface of the socket 5 from a part of the outer peripheral edge of the main body 31. The attachment piece 32 is formed to extend. A plurality of light emitting diodes 33 are mounted on the lower surface of the main body 31 at equal intervals, and these light emitting diodes 33 are electrically connected via a lead plate (not shown) insert-molded in the main body 31, for example. Connected in series or parallel. FIG. 1B is a perspective view of the main part of the LED unit 30 as viewed from above. The mounting piece 32 includes four insertion holes 34 for passing four base pins provided in the base 21. , Power receiving terminals 35a and 35b that are electrically connected to the LED power supply terminals 7a and 7b are provided. Here, one power receiving terminal 35a serves as a positive terminal and the other power receiving terminal 35b serves as a negative terminal, and a plurality of light emitting diodes 33 are electrically connected between the terminals 35a and 35b.

  Thus, when a cap pin is inserted into the insertion hole 34 of the mounting piece 32 and the cap pin is inserted into the insertion hole 6 of the socket 5, the cap pin is electrically connected to the fluorescent lamp power supply terminal disposed in the socket 5. Then, lighting power is supplied to the fluorescent lamp 20 from the fluorescent lamp lighting circuit 3. Further, the power receiving terminals 35a and 35b provided on the mounting piece 32 are electrically connected to the LED power supply terminals 7a and 7b, whereby the lighting power is supplied from the LED lighting circuit 4 to the LED unit 30. That is, by providing the LED power supply terminals 7 a and 7 b in the fluorescent lamp socket 5, it is possible to individually supply lighting power to the fluorescent lamp 20 and the LED unit 30. Therefore, since the socket 5 for the fluorescent lamp can also be used as a socket for supplying the lighting power to the LED unit 30, the lighting power can be individually applied to the fluorescent lamp 20 and the LED unit 30 from one socket 5 without increasing the number of parts. Can be supplied and lit. Moreover, since the main body 31 of the LED unit 30 is disposed in the inner region of the double-ring fluorescent lamp 20, it can be reduced that the inner region of the fluorescent lamp 20 looks dark due to light emission of the light emitting diode 33.

  Further, when the fluorescent lamp 20 is mounted on the socket 5, the glass tube 22 of the fluorescent lamp 20 is held by the holding fixture 8, whereby the fluorescent lamp 20 and the LED unit 30 are held in a state of being attached to the fixture body 2. . As described above, since the mounting piece 32 of the LED unit 30 is held in a state of being interposed between the base 21 of the fluorescent lamp 20 and the socket 5, the base 21 of the fluorescent lamp 20 can be used as it is. There is no need to change the configuration of the fluorescent lamp 20 side.

  In this embodiment, the LED unit 30 is attached to the instrument body 2 by mounting the fluorescent lamp 20 in the socket 5 and holding the attachment piece 32 between the base 21 of the fluorescent lamp 20 and the socket 5. However, a claw or the like that engages with the base 21 may be provided on the mounting piece 32. If the LED unit 30 is also provided with means for mechanically attaching to the instrument body 2, only the LED unit 30 or only the fluorescent lamp 20 can be attached to the instrument body 2 to be lit. In addition, the main body 31 of the LED unit 30 may be provided with a claw or the like for engaging with the instrument main body 2, and the main body 31 may be directly held by the instrument main body 2, or the LED unit 30 may be disposed on the instrument main body 2 side. A means for holding the main body 31 (for example, the holding metal fitting 8) may be provided.

  In the present embodiment, the fluorescent lamp power supply terminal (located behind the insertion hole 6) and the LED power supply terminals 7a and 7b are disposed on the same surface of the socket 5, so that the LED unit 30 is attached to the base 21. In this state, the fluorescent lamp 20 can be attached to the socket 5. Therefore, the mounting operation of the LED unit 30 and the fluorescent lamp 20 is performed in one operation, compared to the case where the operation of mounting the LED unit 30 on the apparatus main body 2 and the operation of mounting the fluorescent lamp 20 on the apparatus main body 2 are performed separately. Since it can be done, it is possible to reduce the trouble of wearing.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. In the luminaire of the first embodiment, the LED unit 30 is arranged in the inner region of the double-ring fluorescent lamp 20, whereas the LED unit 30a of the present embodiment is as shown in FIG. 3 and FIG. Attached to the base 21 of the fluorescent lamp 20 is used. Since the configuration other than the LED unit 30a is the same as that of the first embodiment, the same components are denoted by the same reference numerals and the description thereof is omitted.

  The main body 36 of the LED unit 30a is formed of an insulating synthetic resin, and the rectangular plate-shaped attachment piece 36a and the LED holding piece 36b are respectively extended from both ends of the curved portion 36c whose side view is curved in a semicircular shape. By doing so, the shape of the side view is formed in a substantially U shape.

  The mounting piece 36a is disposed between the base 21 and the socket 5. As shown in FIG. 4B, power receiving terminals 35a and 35b are disposed on the surface facing the socket 5 and provided on the base 21. Two grooves 36d into which the cap pins 23 are inserted two by two are formed.

  The LED holding piece 36b is disposed so as to overlap the surface of the base 21 opposite to the socket 5, and a plurality of (for example, four) light emitting diodes 33 are provided on the surface of the LED holding piece 36b (the side opposite to the base 21). Is arranged. These light emitting diodes 33 are connected electrically (in series or in parallel) between the power receiving terminals 35a and 35b via a lead plate (not shown) insert-molded in the main body 36, for example.

  As shown in FIG. 3, the LED unit 30 a holds the main body 36 on the base 21 such that the base 21 is inserted between the attachment piece 36 a and the LED holding piece 36 b. At this time, since the base pin 23 is inserted into the groove 36d, the base pin 23 does not interfere and the LED unit 30a can be easily attached to the base 21. If a protrusion (not shown) protruding toward the other of the attachment piece 36a and the LED holding piece 36b is provided at the tip of at least one of the attachment piece 36a and the LED holding piece 36b, the protrusion is caught by the base 21 and the main body 36 Can be prevented from coming off the base 21.

  When the fluorescent lamp 20 having the LED unit 30a attached to the base 21 in this way is attached to the socket 5, the base pin 23 is inserted into the insertion hole 6 of the socket 5, and the fluorescent lamp 20 is turned on from the fluorescent lamp lighting circuit 3. Power is supplied. Further, the power receiving terminals 35a and 35b provided on the mounting piece 36a are electrically connected to the LED power supply terminals 7a and 7b, and the lighting power is supplied from the LED lighting circuit 4 to the LED unit 30a. That is, by providing the LED power supply terminals 7 a and 7 b in the fluorescent lamp socket 5, it is possible to individually supply lighting power to the fluorescent lamp 20 and the LED unit 30. Therefore, since the socket 5 for the fluorescent lamp can also be used as a socket for supplying the lighting power to the LED unit 30, the lighting power can be individually applied to the fluorescent lamp 20 and the LED unit 30 from one socket 5 without increasing the number of parts. Can be supplied and lit. Further, since the LED holding piece 36b of the LED unit 30a is arranged so as to cover the base 21 of the fluorescent lamp 20, the vicinity of the base 21 looks dark due to light emission of the light emitting diode 33 mounted on the LED holding piece 36b. Can be reduced.

  Since the attachment piece 36a of the LED unit 30 is held in a state of being interposed between the base 21 of the fluorescent lamp 20 and the socket 5, the conventional base 21 of the fluorescent lamp 20 can be used as it is. There is no need to change the configuration of the lamp 20 side.

  Further, since the fluorescent lamp power supply terminal (arranged in the back of the insertion hole 6) and the LED power supply terminals 7a and 7b are disposed on the same surface of the socket 5, the LED unit 30a is mounted on the base 21, The fluorescent lamp 20 can be attached to the socket 5. Therefore, the mounting operation of the LED unit 30a and the fluorescent lamp 20 is performed in one operation, compared to the case where the operation of mounting the LED unit 30 on the apparatus main body 2 and the operation of mounting the fluorescent lamp 20 on the apparatus main body 2 are performed separately. Since it can be done, it is possible to reduce the trouble of wearing.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the LED unit 30a is mounted on the base portion of the annular fluorescent lamp 20, whereas in the present embodiment, the LED unit 30b is mounted on the base portion of the straight fluorescent lamp 40. Yes. Since the circuit configuration of this lighting fixture is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  The luminaire 1 is used, for example, installed on the ceiling, and is a box-like luminaire in which a fluorescent lamp lighting circuit 3, an LED lighting circuit 4 and the like are housed, as shown in FIG. 5 (a). A main body 9 is provided. A plunger-type socket 10 for mounting the base 41 of the fluorescent lamp 40 is provided on the surface (lower surface when attached to the ceiling) of the instrument main body 9. FIG. 6 is a perspective view illustrating only the socket 10, and a plunger 10 a that receives the base 41 is provided in the socket 10 so as to be movable in the axial direction of the fluorescent lamp 40. The plunger 10a is always pushed outward (that is, the fluorescent lamp 40 side) by the elastic force of a spring (not shown) housed in the socket 10. The plunger 10a has two insertion holes 10b into which the two base pins 42 provided in the base 41 are respectively inserted. The base 10 faces the insertion hole 10b inside the socket 10 so as to face the base pin. A power supply terminal 11 electrically connected to 42 is accommodated. Further, on the surface of the plunger 10a, recesses 10c, 10c are provided on both upper and lower sides in FIG. 6 with two insertion holes 10b interposed therebetween, and LED power supply terminals 12a, 12b are provided at the bottoms of the recesses 10c, 10c. Is arranged.

  On the other hand, the main body 37 of the LED unit 30 b is orthogonal to the mounting piece 38 from a disc-shaped mounting piece 38 held between the tip surface of the base 41 and the socket 10 and about half of the circumferential portion of the mounting piece 38. It is comprised with the cover part 39 which protrudes in one direction (a base 41 side) of the direction to do.

  The attachment piece 38 is provided with two insertion holes 38a extending in an arc shape through which the two base pins 42 provided in the base 41 are passed. The attachment piece 38 is provided with power receiving terminals 35 a and 35 b that are electrically connected to the LED power supply terminals 12 a and 12 b provided on the socket 10.

  The cover portion 39 is curved in a circular arc shape along the peripheral surfaces of the base 41 and the glass tube 43, and a plurality of light emitting diodes 33 are arranged on the outer surface thereof. These light emitting diodes 33 are connected electrically (in series or in parallel) between the power receiving terminals 35a and 35b via a lead plate (not shown) insert-molded inside the main body 37, for example.

  As shown in FIG. 5 (b), the LED unit 30b brings the base 41 close to the mounting piece 38 from the cover 39 side so that the base pin 42 is inserted into the insertion hole 38a, and the tip surface of the base 41 is attached to the mounting piece 38a. It is attached to the fluorescent lamp 40 in a state where it is in contact with 38. When the fluorescent lamp 40 with the LED unit 30 b attached is attached to the socket 10, the attachment piece 38 is held between the socket 10 and the base 41, so that the LED unit 30 b is attached to the instrument body 2. Here, the base pin 42 of the fluorescent lamp 40 is inserted into the insertion hole 10 b of the socket 10, and the base pin 42 is electrically connected to the fluorescent lamp power supply terminal 11, whereby the fluorescent lamp 20 is connected to the fluorescent lamp lighting circuit. Lighting power is supplied from 3. Further, the power receiving terminals 35a and 35b provided on the mounting piece 38 are electrically connected to the LED power supply terminals 12a and 12b, and the lighting power is supplied from the LED lighting circuit 4 to the LED unit 30b. That is, by providing the LED power supply terminals 12a and 12b in the fluorescent lamp socket 10, it is possible to individually supply lighting power to the fluorescent lamp 20 and the LED unit 30b. Accordingly, since the fluorescent lamp socket 10 can also be used as a socket for supplying lighting power to the LED unit 30b, the lighting power can be individually supplied from one socket 10 to the fluorescent lamp 20 and the LED unit 30b without increasing the number of parts. Can be supplied and lit. Further, since the cover portion 39 of the LED unit 30b is arranged so as to cover the lower portion of the base 41, the vicinity of the base 41 (B portion in FIG. 8) by light emission of the light emitting diode 33 mounted on the cover portion 39. Can be seen to be dark. As shown in FIGS. 7A and 7B, the cover 39 may protrude from about half of the circumferential portion of the mounting piece 38 in both directions perpendicular to the mounting piece 38. The part 39 can cover both the base 41 and the socket 10. Since the base 41 and the socket 10 do not emit light, this portion looks dark. However, since the cover part 39 covers the base 41 and the socket 10, light emission of the light emitting diode 33 mounted on the cover part 39 causes the base 41 and the socket 10 to emit light. It is possible to reduce the vicinity of 10 to appear dark.

  Incidentally, since the mounting piece 38 of the LED unit 30b is held in a state of being interposed between the base 41 of the fluorescent lamp 40 and the socket 10, the base 41 of the fluorescent lamp 40 can be used as it is. There is no need to change the configuration of the lamp 40 side.

  Further, since the fluorescent lamp power supply terminal 11 and the LED power supply terminals 12a and 12b are arranged on the same surface of the socket 10 (ie, the plunger 10a), the fluorescent lamp 40 is mounted with the LED unit 30b attached to the base 41. Can be attached to the socket 10. Therefore, the mounting operation of the LED unit 30b and the fluorescent lamp 40 is performed in one operation, compared with the case where the operation of mounting the LED unit 30b on the apparatus main body 9 and the operation of mounting the fluorescent lamp 40 on the apparatus main body 9 are performed separately. Since it can be done, it is possible to reduce the trouble of wearing.

(Embodiment 4)
Embodiment 4 of this invention is demonstrated based on FIGS. 9-11. In the third embodiment, the LED unit 30b is attached to the base portion of the straight tube fluorescent lamp 40 having the bases at both ends, whereas in the present embodiment, the gap between the base of the seamless type fluorescent lamp 50 and the socket. The LED unit 30c is mounted on the. Since the circuit configuration of this lighting fixture is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  The lighting fixture 1 is used, for example, installed on a ceiling, and includes a box-like fixture body 9 in which a lighting circuit 3 for fluorescent lamps, a lighting circuit 4 for LEDs, and the like are housed. As shown in FIG. 9, a socket 13 for mounting the cap 52 of the fluorescent lamp 50 is provided on the surface (the lower surface when attached to the ceiling) of the instrument main body 9. The socket 13 is formed in a substantially rectangular parallelepiped shape, and two long hole-like insertion holes 13a into which the cap pins 53 are inserted are opened on the surface which becomes the lower surface when attached to the ceiling, and face each insertion hole 13a. A fluorescent lamp power supply terminal (not shown) is accommodated in the socket 13. Further, the surface of the socket 13 is provided with recesses 13b on both sides of the insertion hole 13a, and LED power supply terminals 14a and 14b are disposed on the bottom surface of each recess 13b.

  On the other hand, the LED unit 30c includes a main body 60 formed in a rectangular plate shape with an insulating synthetic resin, and the main body 60 is used for passing a cap pin 53 into a portion corresponding to the insertion hole 13a of the socket 13. An elongated hole 60a is opened. The main body 60 is provided with power receiving terminals 35a and 35b that are electrically connected to the LED power supply terminals 14a and 14b provided in the socket 13, respectively. The main body 60 protrudes to the outside of the base 52 in the axial direction of the fluorescent lamp 50, and the light emitting diode 33 is mounted on a portion that protrudes to the outside of the base 52. The light emitting diode 33 is electrically connected between the power receiving terminals 35 a and 35 b via a lead plate (not shown) insert-molded in the main body 60. The light emitted from the light-emitting diode 33 is irradiated downward (direction C1 in FIG. 9) while attached to the ceiling.

  When the LED unit 30 c is attached to the instrument main body 2, when the cap pin 53 of the fluorescent lamp 50 is inserted through the insertion hole 60 a of the main body 60 and into the insertion hole 13 a of the socket 13, the fluorescent light stored in the socket 13 is stored. A cap pin 53 is connected to the lamp power supply terminal. At this time, lighting power is supplied from the fluorescent lamp lighting circuit 3 to the fluorescent lamp 50, and the base 52 is mechanically held in the socket 13. Also, the power receiving terminals 35a and 35b provided on the main body 60 are electrically connected to the LED power supply terminals 14a and 14b, and the lighting power is supplied from the LED lighting circuit 4 to the LED unit 30c. That is, by providing the LED power supply terminals 14a and 14b in the fluorescent lamp socket 13, it is possible to individually supply lighting power to the fluorescent lamp 50 and the LED unit 30c.

  Therefore, since the fluorescent lamp socket 13 can also be used as a socket for supplying lighting power to the LED unit 30c, the lighting power can be individually supplied from one socket 13 to the fluorescent lamp 50 and the LED unit 30c without increasing the number of parts. Can be supplied and lit. Further, even in the seamless type fluorescent lamp 50, since the filament is arranged near the end portion of the glass tube 51, the vicinity of the end portion of the glass tube 51 becomes slightly dark, and the fluorescent lamp 50 is axially moved as shown in FIG. If they are arranged side by side, light drop occurs near the boundary (B portion in the figure). Here, the main body 60 of the LED unit 30c projects to the outside of the glass tube 51 in the axial direction of the glass tube 51, and the light emitting diode 33 is mounted on the projecting portion. Light loss at the edge can be reduced.

  In addition, since the main body 60 of the LED unit 30c is held in a state of being interposed between the base 52 of the fluorescent lamp 50 and the socket 13, the base 52 of the fluorescent lamp 50 can be used as it is. There is no need to change the configuration on the 50 side.

  Further, since the fluorescent lamp power supply terminal (not shown) and the LED power supply terminals 14a and 14b are arranged on the same surface of the socket 13, the fluorescent lamp 50 is mounted with the LED unit 30c mounted on the base 52. It can be attached to the socket 13. Therefore, the mounting operation of the LED unit 30c and the fluorescent lamp 50 is performed in one operation, compared to the case where the operation of mounting the LED unit 30c on the apparatus main body 9 and the operation of mounting the fluorescent lamp 50 on the apparatus main body 9 are performed separately. Since it can be done, it is possible to reduce the trouble of wearing.

  By the way, in the form shown in FIG. 9, the main body 60 of the LED unit 30c is formed in a flat plate shape. However, as shown in FIG. 10A, the portion of the main body 60 that protrudes outside the glass tube 51 is substantially perpendicular. The light emitting diode 33 may be mounted on the bent portion 60b by bending. The light emitting diode 33 is disposed on the surface of the bent portion 60b on the fluorescent lamp 50 side, and the light emitted from the light emitting diode 33 is irradiated to the fluorescent lamp 50 side (in the direction of arrow C2 in FIG. 10A). Therefore, the light drop at the end of the glass tube 51 can be reduced by the light emission of the light emitting diode 33. Further, as shown in FIG. 10B, the light emitting diode 33 may be disposed on the surface opposite to the fluorescent lamp 50 in the bent portion 60b. In this case, the light emission of the light emitting diode 33 is opposite to that of the fluorescent lamp 50. Irradiated to the side (in the direction of arrow C3 in FIG. 10B). The light around the end of the glass tube 51 is slightly darkened around the end of the glass tube 51, but the light emission at the end of the glass tube 51 is reduced by the light emission of the light emitting diode 33. Can do.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the LED unit 30d is mounted on the socket 15 in which the bulb-shaped fluorescent lamp 70A is mounted. Since the circuit configuration of this lighting fixture is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  In this lighting fixture 1, for example, a socket 15 is installed on a construction surface such as a ceiling, and an electric wire (not shown) is connected between the lighting circuit 3 for fluorescent lamps and the LED lighting circuit 4 and the socket 15 arranged on the back side of the construction surface. )).

  As shown in FIGS. 12 and 13, the socket 15 includes a main body 15 a formed in a cylindrical shape from an insulating synthetic resin. Inside the main body 15a, a metal socket terminal 15b having a screw portion to which the base 71a of the fluorescent lamp 70A is coupled is provided, and the socket terminal 15b is electrically connected to the outer peripheral electrode 73 of the base 71a. Terminal 17 is provided. Further, a terminal 16 that is electrically connected to the center electrode 72 of the base 71a is provided on the inner bottom surface of the main body 15a. Here, the terminals 16 and 17 serve as fluorescent lamp power supply terminals for supplying the lighting power from the fluorescent lamp lighting circuit 3 to the fluorescent lamp 70A. Further, the socket terminal 15b is provided with a notch 15c at a symmetrical position with the axis center in between, and LED power supply terminals 18a and 18b for supplying lighting power from the LED lighting circuit 4 are arranged in each notch 15c. ing.

  When the base 71a of the fluorescent lamp 70A suitable for the socket 15 is screwed into the socket terminal 15b of the socket 15, the center electrode 72 of the base 71a is electrically connected to the terminal 16, and the outer peripheral electrode 73 is electrically connected to the terminal 17. Thus, since the lighting power is supplied from the fluorescent lamp lighting circuit 3 to the fluorescent lamp 70A via the socket 15, the fluorescent lamp 70A can be turned on. The LED power supply terminals 18a and 18b are arranged in a state of being spaced apart from the outer peripheral electrode 73 so as not to contact the outer peripheral electrode 73 of the fluorescent lamp 70A attached to the socket 15.

  On the other hand, the main body of the LED unit 30d has an axial direction in which an outer cylindrical portion 61 disposed on the outer peripheral side of the socket 15 and an intermediate cylindrical portion 62 disposed on the inner peripheral side of the socket 15 are made of an insulating synthetic resin. It is formed in the shape which was connected by the one end side (refer FIG.14 (b)). A plurality of light emitting diodes 33 are mounted on the outer surface of the main body (the outer peripheral surface and the lower surface of the outer cylinder portion 61) as shown in FIG.

  A claw 62 a that hooks onto the socket terminal 15 b of the socket 15 protrudes from the outer surface of the other end side of the middle cylinder portion 62. A metallic socket terminal 63 having a screw portion to which a base 71b having a screw diameter smaller than that of the fluorescent lamp 70A directly attached to the socket 15 is coupled is provided on the inner side surface of the middle tube portion 62. A terminal 64 that is electrically connected to the socket terminal 15b of the socket 15 is provided on the inner side surface of the middle cylindrical portion 62. The terminal 64 and the socket terminal 63 are, for example, leads that are insert-molded in the middle cylindrical portion 62. It is electrically connected via a plate (not shown). Moreover, as shown in FIG.13 (b), the two protrusions 65 and 65 inserted in the notches 15c and 15c are provided in the inner surface of the middle cylinder part 62, respectively. The two protrusions 65 and 65 are provided with power receiving terminals 66a and 66b that are electrically connected to the LED power supply terminals 18a and 18b, respectively. Between the power receiving terminals 66a and 66b, the plurality of light emitting diodes 33 described above are electrically (series or parallel) via a lead plate (not shown) insert-molded in the main body of the LED unit 30d. It is connected.

  When the middle cylinder 62 is inserted into the socket 15 so that the protrusion 65 provided on the middle cylinder 62 of the LED unit 30d fits into the notch 15c, the claw 62a of the middle cylinder 62 is caught by the socket terminal 15b. As a result, the LED unit 30 d is mounted in the socket 15. At this time, since the power receiving terminals 66a and 66b provided on the protrusion 65 are electrically connected to the LED power feeding terminals 18a and 18b, the lighting power is supplied from the LED lighting circuit 4 to the LED unit 30d via the socket 15. Is supplied, and the light emitting diode 33 can be turned on. Further, when the terminal 64 contacts the socket terminal 15 b of the socket 15, the socket terminal 63 of the LED unit 30 d and the socket terminal 15 b of the socket 15 are electrically connected.

  A fluorescent lamp 70B having a base 71b having a screw diameter smaller than that of the fluorescent lamp 70A adapted to the socket 15 is connected to the LED unit 30d. When the base 71b of the fluorescent lamp 70B is screwed into the socket terminal 63 of the LED unit 30d, the center electrode 72 of the base 71b is electrically connected to the terminal 16 of the socket 15, and the outer peripheral electrode 73 is connected to the socket terminal 63 of the LED unit 30d. Is electrically connected. Since the socket terminal 63 of the LED unit 30d is electrically connected to the socket terminal 15b (terminal 17) of the socket 15, the lighting power is supplied from the fluorescent lamp lighting circuit 3 to the fluorescent lamp 70B via the socket 15 and the LED unit 30d. Is supplied, and the fluorescent lamp 70B can be turned on.

  Accordingly, since the fluorescent lamp socket 15 can also serve as a socket for supplying lighting power to the LED unit 30d, the lighting power can be individually supplied from one socket 13 to the fluorescent lamp 70B and the LED unit 30d without increasing the number of components. Can be supplied and lit. In the case of the bulb-type fluorescent lamp 70, the vicinity of the socket 15 is slightly dark. However, the LED unit 30d is attached to the socket 15, and the light emitting diode 33 provided in the LED unit 30d is caused to emit light, so Light loss can be reduced.

  The fluorescent lamp 70B connected to the LED unit 30d can use a conventional fluorescent lamp as it is, although the size of the base is smaller than that of the fluorescent lamp 70A suitable for the socket 15.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Lighting circuit for fluorescent lamps 3 Lighting circuit for LED 5 Socket 6 Insertion hole 7a, 7b Feeding terminal for LED 20 Fluorescent lamp 21 Base 30 LED unit 31 Main body 32 Mounting piece 33 Light emitting diode 34 Insertion hole 35a, 35b For power reception Terminal

Claims (4)

A socket to which a fluorescent lamp base is detachably connected;
A fluorescent lamp lighting circuit for supplying lighting power to the fluorescent lamp through the socket;
An LED unit having a light emitting diode as a light source and detachably attached to the socket;
An LED lighting circuit for supplying lighting power to the LED unit through the socket;
The LED unit includes a main body on which the light emitting diode is disposed, and a power receiving terminal provided on a portion of the main body facing the socket.
The socket is provided with an LED power supply terminal that is electrically connected to the power receiving terminal and supplies lighting power from the LED lighting circuit to the light emitting diode through the power receiving terminal. Lighting equipment to do.   A mounting piece held between the socket and the base is provided integrally with the main body, and the power receiving terminal and an insertion hole for passing the base pin of the fluorescent lamp are provided in the mounting piece. The lighting fixture according to claim 1.   3. The lighting apparatus according to claim 1, wherein the LED unit is attached to the fluorescent lamp so that the light emitting diode is disposed on the front side of the base. 4.   The lighting fixture according to any one of claims 1 to 3, wherein a fluorescent lamp power supply terminal and the LED power supply terminal for supplying power to the fluorescent lamp are arranged on the same surface of the socket. .

Images