JP6137564B2 - Straight tube lamp and luminaire - Google Patents

Description

  Embodiments of the present invention relate to a straight tube lamp provided with a base at both ends, each having a lamp pin that engages with a socket of the lighting fixture, and a lighting fixture using the lamp.

  In general, a straight tube type fluorescent lamp having a G13-type base projecting from a pair of lamp pins having a circular cross section at both ends and a lighting device using a socket to which the fluorescent lamp is connected are often used.

  Also, a straight tube lamp using an LED element has been proposed. In this straight tube type lamp, the lamp pin of the G13 type base as in the past or the lamp pin having one end side formed in an L shape is used for mechanical holding and power supply of the lamp, or the lamp pin is only mechanically held and has a separate connector, etc. A method for supplying power to the lamp has been proposed.

Utility Model Registration No. 3152509

The problem to be solved by the present invention is to provide a straight tube lamp capable of improving assembling workability and a lighting fixture using the lamp.

The straight tube lamp of the embodiment includes a straight tube cover having at least part of a light-transmitting portion and having an open end; a mounting plate accommodated in the straight tube cover; a semiconductor light emitting element mounted thereon, a substrate which light emitted from the semiconductor light-emitting element is disposed on the mounting plate so as to emit from the light transmission portion; a bottom wall, said bottom wall and side walls and one projecting annular from the surrounding is opened bottomed tubular body portion, the lamp pins which part is disposed in the main body portion is supported on the socket protrudes luminaire outside, the straight pipe projecting from the longitudinal direction with the release distance from said side wall A regulating portion for guiding the cover, opposed to the regulating portion, and opposed to the surface of the mounting plate opposite to the surface on which the substrate is disposed, and protruded in the longitudinal direction at a distance from the side wall. die having a positioning projection for guiding the straight pipe cover ; Are provided with; die and having a.

According to the present invention, it can be expected that the assembly workability can be improved .

It is a perspective view of the straight tube | pipe lamp which shows 1st Embodiment. It is a front view when a base is removed from a straight tube type lamp same as the above. It is a partial cross section figure which shows the nozzle | cap | die side for electric power feeding of a straight tube | pipe type lamp same as the above. It is a front view which shows the outer side of the nozzle | cap | die for electric power feeding of a straight tube | pipe type lamp same as the above. It is a rear view which shows the inner side of the nozzle | cap | die for electric power feeding of a straight tube | pipe type lamp same as the above. It is a partial cross section figure which shows the nozzle | cap | die side for earthing | grounding of a straight tube | pipe lamp same as the above. It is a front view which shows the outer side of the nozzle | cap | die for grounding of a straight tube | pipe type lamp same as the above. It is a rear view which shows the inner side of the nozzle | cap | die for the earthing | grounding of a straight tube | pipe type lamp same as the above. It is a perspective view of an illuminating device same as the above. It is a rear view which shows the inner side of the feed cap of the straight tube | pipe type lamp which shows 2nd Embodiment. It is a rear view which shows the inner side of the grounding cap of a straight tube | pipe type lamp same as the above.

  Hereinafter, the first embodiment will be described with reference to FIGS.

  FIG. 9 shows an illuminating device 10 which is an embedded illuminating device of a type with two straight tube lamps. In this illuminating device 10, two straight tube lamps 20 are used.

  The luminaire 10 is an elongated lower-side fixture body 11 that is embedded in a ceiling surface, and is disposed opposite to both ends in the longitudinal direction of the fixture body 11 so that the ends of the straight tube lamps 20 are respectively mounted. Two sets of sockets 13 and 14 and a lighting device 12 that is disposed in the fixture body 11 and lights up the straight tube lamp 20. The socket 13 on one end for mounting one end of the straight tube lamp 20 is the non-power-supply side and the ground side, and the socket 14 on the other end for mounting the other end of the straight tube lamp 20 is for power supply. is there. Note that the socket 13 on the ground side may be used for both ground connection and attachment of the straight tube lamp 20 or only for attachment of the straight tube lamp 20, and either one may be used.

  The sockets 13 and 14 are of a rotational mounting type in which the ground pins 42 and the power supply pins 32 are inserted from the front end surfaces of the sockets 13 and 14 and rotated by 90 ° about the tube axis of the straight tube lamp 20. ing.

  Further, the lighting device 12 shown in FIG. 9 receives a commercial AC power supply, converts AC power into DC power, and converts the DC power into a pair of feeding terminals of a socket 14 for feeding and a pair of straight tube lamps 20. The light is supplied to the light source unit 22 through the power supply pin 32. Then, each semiconductor light emitting element 25 of the light source unit 22 is turned on, and light from each semiconductor light emitting element 25 passes through the translucent cover 21 and is irradiated in a predetermined irradiation direction below the lighting fixture 10.

  As shown in FIG. 1, the straight tube lamp 20 is a light-transmitting cover as a straight tube cover which is a tube formed in a straight tube shape with a tube length and a tube diameter similar to those of a light emitting tube of a straight tube fluorescent lamp. 21, a light source unit 22 accommodated in the translucent cover 21, and caps 40 and 30 provided at both ends of the translucent cover 21, respectively. The cap 40 on one end side of the straight tube lamp 20 is a ground side which is a non-power-feeding side attached to the socket 13 on the ground side, and the cap 30 on the other end side of the straight tube lamp 20 is connected to the socket 14 for power feeding. For power supply to be installed. Note that the ground-side cap 40 may be attached to the socket 13 or may be attached only to the socket 13 either.

FIG. 2 is a front view when the caps 30 and 40 are removed from the straight tube lamp 20. 2 shows a state when the end portion of the straight tube lamp 20 is viewed from the other end side to which the base 30 is attached, but the same configuration is also seen when viewed from one end side to which the base 40 is attached. .

  The translucent cover 21 is made of a translucent material and is formed in a cylindrical shape with open ends on one end side and the other end side. Convex protrusions 21a extending in the longitudinal direction are provided on the inner peripheral surface so as to approach each other from a position facing each other.

The light source unit 22 includes a plurality of substrates 26 on which a plurality of semiconductor light emitting elements 25 such as LED elements and EL elements are mounted, and a metal plate 27 as a mounting plate to which these substrates 26 are attached. As the mounting method of the semiconductor light emitting element 25, in the case of an LED element, a method of mounting a plurality of SMD (Surface Mount Device) packages with connection terminals in which LED chips are mounted on the substrate 26, or a plurality of LEDs on the substrate 26. A COB (Chip On Board) method for mounting elements is used.

  The metal plate 27 is formed in a substantially semi-cylindrical shape, and the side edge portion 27a is engaged with the protruding portion 21a and is accommodated in a predetermined position in the translucent cover 21. In addition, a pair of fixing holes 27b and 27b and a positioning hole 27c are formed at the center of the metal plate 27 so as to face outward from the end of the translucent cover 21 and communicate with the fixing holes 27b and 27b. ing. On the flat surface portion 27d of the metal plate 27, a substrate 26 on which the semiconductor light emitting element 25 is mounted is disposed on one surface side. A groove 27e is formed on the side of the flat portion 27d in the longitudinal direction, and a board 26 is fixed to the metal plate 27 by attaching a screw (not shown) to the groove 27e, The flat portion 27d is brought into close contact. The translucent cover 21 only needs to have at least part of the translucent part 21b, and the substrate 26 is attached to the metal plate 27 so that the light emitted from the semiconductor light emitting element 25 is emitted from the translucent part 21b. Fixed.

  As shown in FIGS. 3 to 5, the power supply base 30 includes a bottom wall 31a, a side wall 31b projecting in an annular shape from the periphery of the bottom wall 31a, and a bottomed cylindrical main body 31 having one open side. doing. The main body 31 is made of a synthetic resin such as polycarbonate (PC) or polybutylene terephthalate (PBT). In addition, there is no particular limitation as long as it is a material that can withstand the temperature during lighting and the lamp holding. FIG. 3 is a partial cross-sectional view showing the feeding base 30 side in the AA cross section of FIG. In the following description, the side where the base and the translucent cover 21 face each other is the inside, and the side facing the socket when attached to the lighting fixture is the outside.

  On the outer end surface of the bottom wall 31a, a step portion 31c that is one step higher than the surroundings is formed, and a pair of power supply pins 32 that are electrically connected to the light source unit 22 project from the step portion 31c. .

  A pin support portion 33 that protrudes from the inside of the main body 31 and covers the power supply pin 32 and a pair of fixing portions 34 and 34 are formed inside the base 30. In addition, the fixing portion 34 is provided with a through hole 35 that communicates between the outside and the inside.

  Further, a reinforcing portion 36 is formed so as to be continuous with and integrated with the pin support portion 33 and the fixing portion 34. The reinforcing portion 36 is provided between the pin support portion 33 and the fixing portion 34 to reinforce the main body portion 31. The reinforcing portion 36 of the present embodiment is formed so as to protrude to the inside of the base 30 and is integrated with the base 30 so that the thickness of the main body 31 between the pin support portion 33 and the fixing portion 34 is increased. Provided.

  Further, a positioning projection 37 is provided between the pair of fixing portions 34, 34 from the inside of the base 30. The positioning projection 37 supports the base 30 with respect to the metal plate 27 by fitting into the positioning hole 27c. Further, the base 30 and the metal plate 27 are fixed by attaching the fixture 38 to the fixing hole 27b of the metal plate from the outside of the base 30 through the through hole 35 while the base 30 is supported by the metal plate 27. At this time, the translucent cover 21 is not fixed to the metal plate 27 and the base 30 and is allowed to move in the longitudinal direction. As shown in FIGS. 3 and 5, a pair of restricting portions 39 are provided on the inner side of the base 30 so as to be spaced apart from the side wall 31b with a width wider than the thickness of the translucent cover 21. The translucent cover 21 can be guided when the base 30 is attached to the translucent cover 21, and the movement range of the translucent cover 21 can be restricted after the translucent cover 21 is attached.

  As shown in FIGS. 6 to 8, the grounding base 40 includes a bottom wall 41a, a side wall 41b projecting in an annular shape from the periphery of the bottom wall 41a, and a bottomed cylindrical main body 41 having an open end, a main body One ground pin 42 as a lamp pin protruding from the outer central portion of 41 is provided. FIG. 6 is a partial cross-sectional view showing the grounding cap 40 side in the AA cross section of FIG. The earth pin 42 has a shaft portion 42a and an elliptical plate-shaped tip portion 42b formed at the tip of the shaft portion 42a. Further, a pin support portion 43 and a pair of fixing portions 44 and 44 that protrude from the inside and cover the ground pin 42 are formed inside the main body portion 41. Further, the fixing portion 44 is provided with a through hole 45 that communicates between the outside and the inside. Further, a reinforcing portion 46 is formed so as to be continuous with and integrated with the pin support portion 43 and the fixing portion 44. The reinforcing portion 46 is provided so as to connect the pin support portion 43 and the fixing portion 44, and has a protruding dimension similar to that of the fixing portion 44. Thereby, the region of the pin support portion 43 and the fixing portions 44, 44 of the main body portion 41 is strengthened. A positioning projection 47 is provided between the pair of fixing portions 44 and 44 from the inside of the base 40. The positioning protrusion 47 supports the base 40 with respect to the metal plate 27 by fitting into the positioning hole 27c. Then, with the base 40 supported by the metal plate 27, the base 40 and the metal plate 27 are fixed by attaching the fixture 48 to the fixing hole 27 b of the genus plate 27 from the outside of the base 40 through the through hole 45. As shown in FIGS. 6 and 8, the base 40 also has three locations on the inner side of the base 40, which are arranged on the inner side of the base 40 from the side wall 41 b so as to be spaced apart from the thickness of the translucent cover 21. A restricting portion 49 is provided to guide the translucent cover 21 when attaching the cap 40 to the translucent cover 21, and to restrict the movement range of the translucent cover 21 after being attached. The restricting portion 49 is provided integrally with a rib 41c that protrudes from the bottom wall 41a and is provided integrally with the pin support portion 43.

  Next, a procedure for assembling the straight tube lamp 20 will be described.

  First, the plurality of substrates 26 on which the semiconductor light emitting elements 25 are mounted on the long metal plate 27 are fixed by fixing means (not shown). Each board is electrically connected by connecting means such as a connector or a lead wire. At this time, one end of the light source unit 22 is a non-feeding side, and the other end is a feeding side. The light source unit 22 configured as described above is inserted from one opening of the translucent cover 21. At this time, the side edge portion 27a of the metal plate 27 is engaged with the projecting portion 21a of the translucent cover 21, that is, formed by a pair of opposing projecting portions 21a, 21a and a part of the translucent cover 21. The light source unit 22 is accommodated in the space. Note that the translucent cover 21 and the light source unit 22 have a slight gap in consideration of design errors, thermal contraction of the translucent cover 21 during lighting, assemblability, and the like. That is, the light source unit 22 and the translucent cover 21 are not fixed and are configured to allow a relatively slight movement.

  Next, the base 30 is disposed on the power supply side of the light source unit 22, and the base 40 is disposed on the non-power supply side. Here, in the operation of attaching the base 30 to the metal plate 27, first, the positioning projection 37 of the base 30 is fitted into the positioning hole 27c of the metal plate 27 accommodated in the translucent cover 21. Thereby, the through hole 35 and the fixing hole 27b of the base 30 are positioned. Then, the base 30 is attached to the other end of the translucent cover 21 by fixing the fixture 38 to the fixing hole 27 from the outside of the base 30 through the through hole 35 and fixing the base 30 to the light source unit 22. . Note that the electrical connection between the power supply pin 32 of the base 30 and the light source unit 22 may be performed simultaneously with the mounting work of the base 30 by providing a connector means (not shown) for the substrate 26, or a lead wire or the like. You may connect beforehand by the connection means.

  The base 40 is similarly fixed to the light source unit 22 on the other end side. The ground pin 42 may or may not be grounded to the light source unit 22. If the earth pin 42 is not grounded, the earth pin 42 will only mechanically hold the straight tube lamp 20.

  In the straight tube lamp 20, the longitudinal direction of the tip end portion 42b of the ground pin 42 is aligned with the direction in which the pair of power supply pins 32 are aligned, and the surface parallel to these directions and the semiconductor light emission of the light source unit 22 The light emitting surface of the element 25 is provided in parallel. That is, in a state where the straight tube lamp 20 is correctly mounted between the sockets 13 and 14, light from the light emitting surface of the semiconductor light emitting element 25 of the light source unit 22 is emitted from the light transmitting portion of the light transmitting cover 21 in a predetermined irradiation direction. It is provided so that it can be irradiated.

  In the straight tube lamp 20 configured in this way, since the bases 30, 40 are fixed to the light source unit 22 by the fixing members 38, 48, the strength of the fixing portions 34, 44 of the bases 30, 40 is high. Become. However, since the power supply pin 32 and the ground pin 42 protrude outside the bases 30 and 40 and are spaced apart from the fixing portions 34 and 44 in the pipe diameter direction, power is supplied when the power supply pin 32 or the ground pin 42 is loaded. Stress is easily applied to the periphery of the pin 32 and the ground pin 42, and the risk of damage increases. Therefore, the reinforcing portions 36 and 46 are provided so that the fixing portions 34 and 44 having the highest strength with the caps 30 and 40 attached and the pin support portions 33 and 44 having the highest load are connected and integrated. As a result, problems such as breakage of the caps 30 and 40 are suppressed.

  Further, since the positioning projection 37 is provided inside the bases 30 and 40 and is fitted to the positioning holes 27c, when the bases 30 and 40 are attached to the light source unit 22, the through holes 35 and 45 and the fixing holes 27b And the fixing members 38 and 49 can be easily attached. In particular, the translucent cover 21, the light source unit 22, and the caps 30, 40 are not fixed as in the present embodiment, and particularly when the respective movements are slightly allowed with respect to the translucent cover 21. Workability is improved. In addition, an effect of improving the connection strength between the caps 30 and 40 and the metal plate 27 can be expected.

  Next, a second embodiment will be described with reference to FIGS. The configuration of the reinforcing portion is different from that of the first embodiment, and detailed description of other common configurations is omitted.

  Similarly to the first embodiment, the power supply base 300 and the grounding base 400 in the second embodiment are provided inside the power supply pin 332, the ground pin 342, the pin support portions 333 and 443, the fixing portions 334 and 444, and the fixing portions 334 and 444. It has through holes 335 and 445 provided, positioning projections 337 and 447, and restricting portions 339 and 449. The reinforcing portions 336 and 446 are integrally formed as ribs having a predetermined width from the inside of the main body portions 331 and 441, and are provided so as to be integrated with the pin support portions 333 and 443 and the fixing portions 334 and 444. As a result, the strength around the pin support portions 333 and 443 is improved, and problems such as the possibility of breakage of the base can be suppressed.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 ... Lighting fixture, 11 ... Body body, 13,14 ... Socket, 20 ... Straight tube lamp, 21 ... Translucent cover, 21b ... Translucent part, 25 ... Semiconductor light emitting element, 26 ... Substrate, 27 ... Mounting plate Metal plate, 27b ... fixing hole, 27c ... positioning hole, 30 ... power supply base, 31,41 ... main body part, 32 ... power supply lamp pin, 33,43 ... pin support part, 34,44 ... fixing part , 38 ... Fixing tool, 40 ... Grounding cap, 42 ... Lamp pin for grounding

Claims (3)

A straight pipe cover having a light transmitting part at least in part and having an open end;
A mounting plate housed in the straight pipe cover;
A substrate on which the semiconductor light emitting element is mounted and disposed on the mounting plate so that light emitted from the semiconductor light emitting element is emitted from the light transmitting portion;
A bottom wall, a side wall projecting in an annular shape from the periphery of the bottom wall, and a bottomed cylindrical main body with one open , a part of the main body projecting outwardly and supported by a socket of a lighting fixture that the lamp pins, restricting portion said protruding from the side wall in the longitudinal direction with the release distance for guiding the straight pipe cover, the restricting portion opposite to and with the substrate is disposed surface of said mounting plate A base having a positioning projection that is opposed to the opposite side and protrudes in the longitudinal direction at a distance from the side wall and guides the straight pipe cover ;
Straight tube lamp which is characterized by comprising a. The straight pipe cover is cylindrical,
  A fixing hole formed in the mounting plate and facing outward from an end of the straight pipe cover;
  A through hole provided in the main body and communicating between the outside and the inside;
  Attached to the fixing hole of the mounting plate through the through hole from the outside of the base, the mouth
A fixture for fixing the gold and the mounting plate;
  2. The straight tube lamp according to claim 1, wherein the separation distance has a width that is wider than the thickness of the straight tube cover, and the positioning protrusion supports the base with respect to the mounting plate. An instrument body;
A socket disposed in the instrument body;
A straight tube lamp according to claim 1 or claim 2, wherein the lamp pins are mounted is supported by the socket;
The lighting fixture characterized by comprising.

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