JP5142620B2 - Lighting device - Google Patents

Description

The present invention relates to an illuminating device that can be mounted on an existing straight tube type light source fixture regardless of the type of the fixture.

  Conventionally, fluorescent lamps are frequently used as light sources for indoor or outdoor illumination. Generally used straight tube fluorescent lamps have a built-in discharge gas, a glass tube coated with a phosphor on its inner surface, and two electrode pins provided at both ends of the glass tube for connection to a power source. With two bases each having The straight tube type fluorescent lamp is fixed to the fixture by inserting the electrode pins at both ends into the socket holes (fixture) of the fixture, and is connected to a commercial power source and is turned on when the power is turned on. It is configured.

  In recent years, in order to increase the brightness in one direction without increasing power consumption, a fluorescent lamp having a reflecting means for reflecting light, for example, a reflective film is coated between the inner peripheral surface of a glass tube and a phosphor. Fluorescent lamps are sold. Such a fluorescent lamp needs to be mounted on the fixture such that the side coated with the reflective film is opposite to the direction in which light is desired to be emitted.

  However, since conventional fluorescent lamps emit light evenly at all angles, the arrangement of pin holes provided in the socket of the fixture for inserting the electrode pins of the fluorescent lamp differs depending on the type of fixture. For example, in the case of a fixture for a straight tube fluorescent lamp, the two pin holes of the socket of the fixture are arranged side by side in a direction that coincides with the irradiation direction, a direction that is orthogonal, or a direction that forms an angle of 45 °. is there. For this reason, the emission direction of the light emitted from the fluorescent lamp having the reflecting means is emitted in a direction different from the intended direction depending on the arrangement of the pin holes of the socket of the fixture, and the originally intended direction is dark. There was a possibility that the problem of becoming.

  In recent years, with the increase in luminous efficiency of LEDs, it has become possible to use LEDs with low power consumption and long life as light sources for lighting devices. In order to be able to replace existing fixtures for fluorescent lamps without modification, they are equipped with electrode pins of the same shape as those of fluorescent lamps standardized by JIS standards, and light up when power is supplied from the electrode pins. There has been proposed an illuminating device using an LED configured as a light source as a light source. In general, the lighting device includes an LED module in which a plurality of LEDs are mounted on one surface of the substrate. In the lighting device configured as a surface light source in this manner, light having directivity is emitted. The same problem as that of the fluorescent lamp having the reflecting means may occur.

Therefore, regardless of the arrangement of the pin holes of the sockets of existing fluorescent lamp fixtures, it can be mounted on the fixtures for fluorescent lamps and wants to irradiate the direction of light emitted from the light source. An illuminating device that can be matched with a direction has been proposed (see, for example, Patent Document 1).
Utility Model Registration No. 3097580

  The illumination device disclosed in Patent Document 1 has an outer tube body having a cylindrical shape that holds an LED module, and provided at both ends of the outer tube body, and electrode pins having the same shape as the electrode pins of a fluorescent lamp are attached. A bottom cylindrical base is provided, and the outer tube body and the base are configured to be movable at a required angle around the axis. Thereby, the emission direction of the directional light emitted from the LED can be matched with the direction of irradiation.

  However, since the lighting device disclosed in Patent Document 1 does not include means for fixing the outer tube body and the base, the base and the outer tube body relatively rotate when the lighting device is mounted on the fixture. There is a possibility that the direction of the electrode pins of the caps provided at both ends may be different, and there is a problem that it is difficult to attach to the fixture.

The present invention has been made in view of such circumstances, and emits light emitted from a directional light source regardless of the arrangement of the pin holes of the sockets of the fixtures for existing straight tube fluorescent lamps. it is possible to match the direction you want to irradiation direction, and an object thereof is to provide a lighting device which can facilitate attachment to the mounting fixture.

An illuminating device according to the present invention is a lighting device comprising a pair of bases attached to a fixture for a straight tube type light source, and a straight tube type light source held between the pair of bases. The light source includes a cylindrical outer tube and a substrate mounted inside the outer tube and on which a light emitter that emits directional light is mounted on one surface, and includes the pair of caps. The holding state of the light source can be changed by rotating the outer tube relative to the pair of bases so as to coincide with the direction in which the emission direction of the light emitted from the light emitter is desired, and the direction in which the light source is desired Mounting means that can fix the light source to the pair of bases in a state of being matched with each other , the outer tube body has a closing portion at an end portion, and the closing portion faces the pair of bases A circular arc shape that is electrically connected to the electrodes of the pair of caps Characterized that you have been contacts formed to.

In the present invention, according to the type of fixture for a straight tube light source, the tube provided with the straight tube light source has a holding state of the straight tube light source by a pair of caps attached to the fixture. Different holdings around the tube axis of the outer tube body so that the direction of emission of the directional light emitted by the light emitter mounted on one surface of the substrate held inside the outer tube body is aligned with the desired direction with changeable in position, and a mounting means which allows fixing the light source to the pair of the base in a state in which fitted to the direction you want irradiation shines. Thereby, regardless of the arrangement of the pin holes of the fixture for the straight tube type light source, it is possible to make the emission direction of the directional light emitted by the straight tube type light source coincide with the direction to be irradiated, When the lighting device is mounted on the fixture, the pair of bases and the light source can be fixed so as not to rotate relative to each other, and therefore the mounting on the fixture can be facilitated.
Furthermore, the outer tube body has an arc-shaped contact formed on the surface facing the pair of caps of the closing portion at the end, and by appropriately setting the circumferential length of this contact, When the pair of bases and the outer tube body are rotated relative to each other, it becomes possible to maintain the contact state between the electrode and the contact of each base, and the pin hole of the fixture for an existing straight tube type fluorescent lamp Regardless of the arrangement, electrical contact can be maintained.

In the illumination device according to the present invention, the mounting means can be engaged with an elastic body having a protruding bent portion fixed to one of the pair of bases and the outer tube, and the other can be engaged with the bent portion. And a plurality of recesses formed as described above .

In the present invention, an elastic body such as a leaf spring having a protruding bent portion fixed to one of the pair of bases and the outer tube body is formed on the other side of the pair of bases and the outer tube body. By engaging with each other, the pair of caps and the outer tube body are fixed. By properly forming the recesses, the direction of light emitted from a directional light source can be controlled by one type of base regardless of the pin hole arrangement of the fixture for an existing straight tube type fluorescent lamp. The lighting device can be attached to the fixture in accordance with the direction in which the irradiation is desired.

In the illumination device according to the present invention, the mounting means can be fitted to a convex portion provided so as to protrude toward one of the pair of caps and the outer tube body , and to the convex portion on the other side. And a recess provided on the surface.

In the present invention, one in the protrusion provided so as to protrude toward the other of the pair of the base and the outer tube is fitted in a recess provided in the other of the pair of the base and the outer tube Thus, the pair of caps and the outer tube body are fixed. The pair of bases and the outer tube body can be fixed by a simple method of fitting the convex portions into the concave portions.

In the illumination device according to the present invention, the outer tube body and the pair of caps have a cylindrical shape, and the mounting means includes a groove formed in an annular shape on outer peripheral surfaces of both end portions of the outer tube body. And an engaging protrusion that engages with the groove formed on the inner peripheral surface of the pair of caps, and the groove has a deep groove portion at a predetermined angular position in the circumferential direction.

In the present invention, the engagement protrusions formed on the inner peripheral surfaces of the pair of bases having the cylindrical shape are engaged with the annular grooves formed on the outer peripheral surfaces of both ends of the outer tube body having the cylindrical shape. The pair of bases and the outer tube body are fixed so as not to move relative to each other in the contact / separation direction, and the engagement protrusion is engaged with the deep groove portion provided at a predetermined angular position in the circumferential direction of the groove. A pair of caps and an outer tube are fixed so as not to rotate. By providing a deep groove at an appropriate predetermined angular position in advance, a directional light source can be provided by a single base regardless of the pin hole arrangement of the socket of the existing straight tube fluorescent lamp fixture. The lighting device can be mounted on the fixture such that the emission direction of the emitted light coincides with the direction of irradiation.

According to the present invention, regardless of whether the arrangement of the pin holes of the fixture for an existing source of straight tube to match the direction you want to irradiate the emission direction of light having directivity which straight tube light source emits In addition , by fixing the light source to the pair of bases in a state where the light source is aligned with the direction to be irradiated, it is possible to easily attach the light source to an existing light source fixture.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof, taking an illuminating apparatus using an LED as a light source as an example.
(Embodiment 1)
FIG. 1 is an external perspective view showing a lighting device according to Embodiment 1 of the present invention, and FIG. 2 is an exploded perspective view of the lighting device according to Embodiment 1. FIG.

  In the figure, reference numeral 1 denotes an outer tube body as a connecting body composed of a cylindrical portion 1a having an elongated cylindrical shape and closing portions 1b, 1b for closing both ends of the cylindrical portion 1a. The cylindrical portion 1a of the outer tube 1 is formed of milky white resin to which a diffusing agent is added.

  An elongated rectangular LED substrate 2 is held inside the outer tube body 1. The LED board 2 is a flat plate made of an epoxy resin containing glass fiber, and LEDs 3, 3... Are mounted on one surface of the LED board 2. The LEDs 3, 3... Are surface-mounted LEDs each including an LED element, a sealing resin that seals the LED element so as to be shielded from outside air, and input and output electrodes.

  A circuit board 4 is attached to the other surface of the LED board 2. The circuit board 4 includes a full-wave rectifier (not shown) that rectifies an alternating current into a direct current and a constant current portion (not shown) that keeps the forward current of the LEDs 3, 3. (Not shown) is mounted.

  The closed portions 1b and 1b of the outer tube 1 have a disk shape, and male connectors 5 and 5 connected to the circuit board 4 via lead wires (not shown) are connected to the closed portions 1b and 1b. Are provided respectively. The male connectors 5 and 5 shown in the figure as rectangular parallelepipeds are connection terminals having convex portions protruding outward from the outer surfaces 1c and 1c of the closing portions 1b and 1b in a direction perpendicular to the outer surfaces 1c and 1c. .

  Moreover, the illuminating device 10 is provided with the two nozzle | cap | die 6,6 which should be mounted | worn with the fixture of the existing straight tube | pipe type fluorescent lamp. The caps 6 and 6 have a bottomed cylindrical shape, and have an inner diameter slightly larger than the outer diameter of the cylindrical portion 1 a of the outer tube 1. The caps 6 and 6 respectively have electrode pins 7, 7... Arranged in parallel at a predetermined interval. The electrode pins 7, 7... Have the same shape as the electrode pins of fluorescent lamps standardized by the JIS standard so that they can be replaced without modifying existing fixtures for fluorescent lamps.

  Female connectors 8, 8 connected to the electrode pins 7, 7,... Are provided on the inner surfaces of the caps 6, 6, respectively. Female connectors 8 and 8 shown as rectangular parallelepipeds in the figure are connection terminals having recesses that can be fitted to the protrusions of male connectors 5 and 5. In addition, the connector structure which consists of the male connectors 5 and 5 and the female connectors 8 and 8 is a publicly known structure in itself, and detailed description is abbreviate | omitted.

  Note that the caps 6 and 6 in the present invention are not limited to conventional metal caps, and portions other than the electrode pins and the connector structure are not necessarily made of metal, and may be made of plastic, for example. .

  FIG. 3 is a schematic view of a socket that is a fixture of a fixture for a straight tube fluorescent lamp. FIG. 3A shows an example of the arrangement of the pin holes of the socket, and FIG. 3B shows another example of the arrangement of the pin holes of the socket.

  Referring to FIG. 3 (a), reference numeral 70 shown in the figure is a part of a fixture for a straight tube fluorescent lamp, and the fixture 70 includes a ballast, a lighting circuit, It has a publicly known configuration including a pair of sockets 71, 71 and the like for mounting the lighting device. The fixture 70 is fixed to the ceiling on the bottom side. In the socket 71, two pin holes 72, 72 into which the electrode pins 7, 7 are inserted are arranged side by side in a direction parallel to the fixing surface 70 a of the fixture 70.

  Referring to FIG. 3B, reference numeral 75 in the drawing is an attachment device for a straight tube fluorescent lamp, and the attachment device 75 includes sockets 76 and 76. In the socket 76, two pin holes 77 and 77 into which the electrode pins 7 and 7 are inserted are juxtaposed in a direction orthogonal to the fixing surface 75 a of the attachment device 75.

  The bases are prepared so as to correspond to the sockets 71 and 76 of such a fixture. FIG. 4 is a schematic diagram illustrating a base used in the lighting device 10 according to the first embodiment. 4A is a view of the base 6 viewed from the side of the electrode pins 7 and 7, and FIG. 4B is a cross-sectional view taken along line IV-IV in FIG. 4A. As shown in FIG. 4A, the female connector 8 is attached to the inner surface of the base 6 so that the longitudinal direction coincides with the arrangement direction of the electrode pins 7 and 7.

  FIG. 5 is a schematic diagram illustrating another example of a base used in the lighting apparatus according to Embodiment 1. 5A is a view of the base 16 viewed from the electrode pins 17 and 17, and FIG. 5B is a cross-sectional view taken along the line VV of FIG. 5A. As shown in FIG. 5A, the female connector 18 is attached to the inner surfaces of the caps 16, 16 so that the longitudinal direction coincides with the direction orthogonal to the arrangement direction of the electrode pins 17, 17.

  FIG. 6 is a partially enlarged view of the fitting portion of the outer tube body 1 and the caps 6 and 6. As described in FIG. 4, the female connector 8 is provided on the inner surface of the base 6 so that the longitudinal direction thereof coincides with the arrangement direction of the electrode pins 7 and 7. The base 6 is moved to the outer tube 1 as indicated by the white arrow in the figure, and the female connector 8 is fitted to the male connector 5. Thereby, the arrangement direction of the electrode pins 7 and 7 of the base 6 coincides with the direction parallel to the LED substrate 2.

  The illuminating device configured as described above has the electrode 70 so that the surface of the LED substrate 2 on which the circuit board 4 is provided is the fixed surface 70a side of the fixture 70 shown in FIG. The pins 7, 7 ... are mounted by inserting them into the pin holes 72, 72 ..., respectively. In this state, when the power is turned on, the power supplied to the electrode pins 7, 7... Is supplied to the circuit board 4 through the female connectors 8 and 8 and the male connectors 5 and 5, and is rectified by the circuit board 4. The supplied constant current is supplied to the LED substrate 2, and the LEDs 3, 3... Are turned on with the supply of this current, and the lighting device is directed in a direction perpendicular to the fixing surface 70 a of the fixture 70, that is, toward the floor. Light is emitted.

  On the other hand, when the fixture for mounting the lighting device is the fixture 75 shown in FIG. 4B, the caps 16, 16 shown in FIG. 5 are attached to the outer tube 1.

  As described above, a plurality of types of bases 6, 6, 16, 16 are prepared in advance according to the sockets 71, 71, 76, 76 of the mounting devices 70, 75, and the bases 6, which are suitable for the mounting device 70 to be mounted. 6 is used to match the direction in which the light emitted from the directional LEDs 3, 3,... Is desired to be irradiated, and the female connectors 8, 8 are fitted to the male connectors 5, 5, so that the caps 6, 6 and the outer tube are fitted. The body 1 is fixed. This makes it possible to match the emission direction of light emitted from the directional LEDs 3, 3,... With the direction in which the light is desired, regardless of the arrangement of the pin holes of the socket of the mounting fixture, and to attach the lighting device to the mounting fixture 70. Since the bases 6 and 6 and the outer tube body 1 can be fixed so as not to rotate relative to each other when attached to the attachment device 70, attachment to the attachment device 70 can be facilitated.

  Further, since the male connectors 5 and 5 and the female connectors 8 and 8 fix the caps 6 and 6 and the outer tube body 1 and are electrically connected to each other, it is not necessary to separately provide connection means such as lead wires. .

  In the present embodiment, two types of caps are used according to two types of mounting devices in which the arrangement of the pin holes of the sockets is different. More than one type of base may be used. For example, it is possible to cope with a mounting tool in which a socket pin hole is arranged in a direction that forms an angle of 45 ° with the direction to be irradiated by preparing a suitable base in advance.

  Moreover, although the connector which has a rectangular axial cross-sectional shape is used, it is not limited to this shape. For example, when the regular polygonal connector is provided concentrically with the closing portions 1b, 1b having the disk shape of the outer tube 1 and the caps 6, 6, respectively, it is not necessary to prepare a plurality of types of caps. , Low cost.

  In this embodiment, the male connectors 5 and 5 are provided on the outer tube 1 side, and the female connectors 8 and 8 are provided on the caps 6 and 6, respectively. A female connector may be provided on the outer tube 1 side.

  Furthermore, in this Embodiment, although demonstrated to the example the attachment fixture fixed to the ceiling, it is not limited to this, Even if the fixing place and / or direction of an attachment fixture differ, it is applicable similarly.

(Embodiment 2)
FIG. 7 is an exploded perspective view of the lighting apparatus according to Embodiment 2 of the present invention.

  In the figure, reference numeral 21 denotes an outer tube body comprising a cylindrical portion 1a having an elongated cylindrical shape and closed portions 21b and 21b for closing both ends of the cylindrical portion 1a.

  FIG. 8 is a schematic view of the closing portions 21 b and 21 b of the outer tube body 21, and FIG. 9 is an explanatory diagram of a method for fixing the outer tube body 21 and the base 26. The closing portion 21b has a thick disk shape, and a plurality of fixing holes 25, 25... Are formed on one surface of the closing portion 21b at a predetermined angle in the circumferential direction along the outer peripheral edge. It is.

  Further, contacts 29, 29 having an arc shape are formed on one surface of the closing portion 21b over a circumferential range corresponding to the fixing holes 25, 25. The radii of the contacts 29 and 29 correspond to the distance from the center of the electrode pin of the die described below. The contacts 29 and 29 are connected to the circuit board 4 via lead wires (not shown).

  Moreover, the illuminating device 20 is provided with the two nozzle | cap | die 26,26 which should be mounted | worn with the fixture of the existing straight tube | pipe type fluorescent lamp, as shown in FIG. The caps 26, 26 have a bottomed cylindrical shape and have an outer diameter that is substantially the same as the outer diameter of the cylindrical portion 1 a of the outer tube body 21. The caps 26, 26 have electrode pins 27, 27,... Arranged in parallel at a predetermined interval. As shown in FIG. 9, a pressing plate 27 a is fixed to the electrode pin 27 on one end extending inside the base 26, and a spring 27 b is interposed between the pressing plate 27 a and the inner surface of the base 26. It is disguised. The electrode pins 27, 27... Have the same shape as the electrode pins of fluorescent lamps standardized by the JIS standard so that they can be replaced without modifying existing fixtures for fluorescent lamps.

  In addition, slits 26a, 26a,... Are formed in the bases 26, 26 at two locations in the circumferential direction over a predetermined length in the axial direction. These slits 26a, 26a ... have fixing claws 28, 28 ... having substantially the same shape as the fixing holes 25, 25 ..., and the tips of the fixing claws 28, 28 ... have the same diameter as the fixing holes 25, 25 ... Each is inserted so as to be in a directional position. Since the other configuration is the same as that of the lighting apparatus 10 of the first embodiment shown in FIG. 2, the same reference numerals as those in FIG. 2 are attached to the corresponding structural members, and detailed description of the configuration and operation is omitted. To do.

  The base 26 configured in this manner has a two-dot chain line in FIG. 8 when, for example, the fixture is the fixture 70 shown in FIG. After the relative rotation position with respect to the outer tube body 21 is determined so that the electrode pins 27, 27 are located at the positions indicated by, the outer tube body is indicated by a white arrow in FIG. After moving toward 21 and crimping to the outer tubular body 21, as shown by the arrow in FIG. 9B, the fixing claws 28 and 28 are projected toward the fixing holes 25 and 25 to engage. By fixing, the outer tube body 21 is fixed. Thereby, the arrangement direction of the electrode pins 27 and 27 of the base 26 coincides with the direction parallel to the LED substrate 2, and the irradiation direction of the light emitted from the LEDs 3, 3... Is orthogonal to the fixing surface 70 a of the fixture 70. Become a direction.

  As described above, the fixing holes 25, 25... Are appropriately formed in advance in the outer tube body 21 in accordance with the position of the pin hole of the socket of the mounting fixture, and the direction of light emitted from the directional LEDs 3, 3,. The bases 26, 26 and the outer tube body 21 are positioned so as to coincide with the direction in which they are desired to be irradiated, and the fixing claws 28, 28 ... are engaged with the fixing holes 25, 25 ... 26 and the outer tube body 21 are fixed, the light emitting direction of the illumination device 20 is controlled by one type of caps 26 and 26 regardless of the arrangement of the pin holes of the sockets of the existing fixtures for fluorescent lamps. Can be easily mounted on the fixture in accordance with the direction in which it is desired to be irradiated.

  Further, by appropriately setting the circumferential lengths of the contacts 29, 29..., When the bases 26, 26 and the outer tube body 21 are relatively rotated, the electrode pins 27, 27. The contact state can be maintained, and the electrical contact can be maintained regardless of the pin hole arrangement of the socket of the existing fixture for a fluorescent lamp.

  Further, when the caps 26, 26 are fixed to the outer tube 21, the electrode pins 27, 27 ... are provided by springs 27b, 27b ... interposed between the inner surfaces of the caps 26, 26 and the pressing plates 27a, 27a ... Are pressure-bonded to the contacts 29, 29, so that power can be stably supplied from the electrode pins 27, 27 to the contacts 29, 29,. Further, when the caps 26, 26 are removed from the outer tube body 21, the caps 26, 26 and the outer tube body 21 can be easily separated by the restoring force of the interposed springs 27b, 27b.

(Embodiment 3)
FIG. 10 is an exploded perspective view of the lighting apparatus according to Embodiment 3 of the present invention.

  In the figure, reference numeral 31 denotes an outer tube body comprising a cylindrical portion 31a having an elongated cylindrical shape, and closing portions 31b and 31b for closing both ends of the cylindrical portion 31a.

  FIG. 11 is a schematic view of the closing portions 31b and 31b of the outer tubular body 31. FIG. The closing part 31b has a disk shape, and a leaf spring 35, which is an elastic body, is provided on one surface of the closing part 31b. As shown in FIG. 11, the leaf spring 35 has a V-shaped bent portion 35a, and a plurality of (four in the figure) pins 35b, 35b,..., Both ends of which are fixed to the closing portion 31b. By being supported, it is attached to the closing portion 31b so that the protruding side of the bent portion 35a faces the center.

  Furthermore, contacts 39 and 39 having an arc shape are formed on one surface of the closing portion 31b, as in the lighting device of the second embodiment. The radius of the contacts 39, 39 corresponds to the distance from the center of the electrode pin of the die described below.

  Further, as shown in FIG. 10, annular grooves 31c and 31c are formed on the outer peripheral surfaces of both ends of the cylindrical portion 31a of the outer tubular body 31 so as to be coaxial.

  Moreover, the illuminating device 30 is provided with two bases 36 and 36 which should be mounted | worn with the fixture of the existing straight tube | pipe type fluorescent lamp. FIG. 12 is an external perspective view of the base 36, and FIG. 13 is a partially enlarged view of the fitting portion between the outer tube 31 and the base 36. The base 36 has a bottomed cylindrical shape, and has an inner diameter that is slightly larger than the outer diameter of the cylindrical portion 31 a of the outer tubular body 31. The base 36 has electrode pins 37, 37 arranged in parallel at a predetermined interval. A disc-shaped engaging portion 38 is attached to the inner surface of the base 36 on one surface, and a plurality of V-shaped concave portions 38a, 38a,. Are formed at a predetermined angle in the circumferential direction. The concave portions 38a, 38a,... Have substantially the same shape as the bent portion 35a of the leaf spring 35.

  Further, as shown in FIG. 12, an annular projection 36b having substantially the same shape as the groove 31c is coaxially formed on the inner surface of the base 36. Since the other configuration is the same as that of the lighting apparatus 10 of the first embodiment shown in FIG. 2, the same reference numerals as those in FIG. 2 are attached to the corresponding structural members, and detailed description of the configuration and operation is omitted. To do.

  The base 36 configured in this manner has a two-dot chain line in FIG. 11 when the mounting device is the mounting device 75 shown in FIG. Until the electrode pins 37, 37 are positioned at the positions shown in FIG. 11, the bent portions of the leaf springs 35 are formed in the recesses 38a, 38a... Of the bases 36, 36 as shown in FIG. By engaging 35a and 35a, respectively, the outer tube body 31 is fixed so as not to rotate relatively. At the same time, as shown in FIG. 13, the projections 36b are engaged with the grooves 31c, so that the caps 36 and 36 and the outer tube 31 are fixed so as not to move relative to each other in the contact / separation direction. Thereby, the arrangement direction of the electrode pins 37 of the base 36 coincides with the direction orthogonal to the LED substrate 2, and the irradiation direction of the light emitted from the LEDs 3, 3... Is orthogonal to the fixing surface 75 a of the mounting device 75. become.

  As described above, the concave portions 38a, 38a,... Are appropriately formed in advance in the engaging portions 38, 38 of the caps 36, 36 in accordance with the pin holes of the socket of the fixture, respectively, and the directional LEDs 3, 3,. By rotating the caps 36 and 36 relative to the outer tube body 31 so that the direction of emission of the light emitted from the light source coincides with the direction of irradiation, the pin hole arrangement of the socket of the existing fixture for a fluorescent lamp can be changed. Regardless, it is possible to easily attach the lighting device to the fixture by using one type of caps 36, 36 so that the direction of light emission coincides with the direction in which light is desired to be emitted.

  In addition, in this Embodiment, although the leaf | plate springs 35 and 35 are attached to the outer tubular body 31, it is not limited to this. The leaf springs 35 and 35 may be attached to the caps 36 and 36, and the engaging portions 38 and 38 may be attached to the outer tube 31. Further, for example, the base is separated into two parts, a disk part having electrode pins and a cylindrical part externally fitted to the disk part so as to be relatively rotatable, and the engaging part is formed in the cylindrical part. It is good also as a structure which attaches a leaf | plate spring to each.

(Embodiment 4)
FIG. 14 is a partially enlarged view of the fitting portion between the outer tube body 41 and the base 46 of the lighting apparatus according to Embodiment 4 of the present invention. FIG. 15 is a cross-sectional view of the outer tubular body 41 taken along line XV-XV in FIG.

  In the figure, reference numeral 41 denotes an outer tube body comprising a cylindrical portion 41a having an elongated cylindrical shape and closing portions 41b and 41b for closing both ends of the cylindrical portion 41a. As shown in FIG. 14, annular grooves 41c and 41c are formed on the outer peripheral surfaces of both ends of the cylindrical portion 41a of the outer tube body 41 so as to be coaxial. As shown in FIG. 15, the grooves 41c and 41c are deeper than other portions of the grooves 41c and 41c at predetermined angular positions in the circumferential direction (90 °, 180 °, 270 °, and 360 ° in the drawing). Has a plurality of (four in the figure) deep groove portions 41d, 41d.

  On the other hand, as shown in FIG. 14, a plurality of (for example, four) protrusions 46b, 46b... Having substantially the same shape as the deep grooves 41d, 41d. Are equally spaced. The other configuration is the same as that of the illumination device 30 of the third embodiment shown in FIG. 13, and therefore, the same reference numerals as those in FIG. 13 are attached to corresponding structural members, and detailed description of the configuration and operation is omitted. To do.

  The base 46 configured in this manner is rotated relative to the outer tube body 41 in accordance with the fixture on which the lighting device is mounted, and the projection 46b of the base 46 is formed in the deep groove portions 41d, 41d. , 46b..., 46b,..., 46b,.

  As described above, the deep groove portions 41d, 41d,... Are appropriately formed in advance in the grooves 41c, 41c of the outer tube body 41 in accordance with the pin holes of the socket of the fixture, so that the directional LEDs 3, 3,. By rotating the bases 46 and 46 relative to the outer tube body 41 so that the emission direction of the emitted light coincides with the direction to irradiate, the arrangement of the pin hole of the socket of the existing fixture for a fluorescent lamp is determined. Regardless of this, it is possible to easily attach the illumination device to the fixture by using one type of caps 46 and 46 so that the direction of light emission coincides with the direction in which light is desired.

  In the present embodiment, four deep groove portions 41d, 41d, and four protrusions 46b, 46b are formed, but the present invention is not limited to this. For example, by forming the deep groove portions 41d, 41d... And the protrusions 46b, 46b... In an equal distribution in the circumferential direction, the socket pin holes are arranged in a direction that forms an angle of 45 ° with the direction of irradiation. It can also be applied to existing fixtures. Further, it is not necessary to form the same number of protrusions 46b, 46b... As the deep groove portions 41d, 41d.

  In the above embodiment, the base and the outer tube body are electrically connected by fitting the male connector to the female connector or bringing the electrode pin into contact with the contact point, but the present invention is not limited to this. For example, a plug jack structure in which the base and the outer tube body are electrically connected by inserting a plug into the jack can be employed. FIG. 16 is a partially enlarged view of the fitting portion of the outer tube body and the base.

  In the figure, reference numeral 51 denotes an outer tube body comprising a cylindrical portion 51a having an elongated cylindrical shape and closing portions 51b and 51b for closing both ends of the cylindrical portion 51a. The closed portions 51b and 51b of the outer tube 51 have a disk shape, and as shown in FIG. 16, cylindrical jacks 55 and 55 are concentric with the closed portions 51b and 51b, respectively. It is installed. The jacks 55 and 55 are connected to the circuit board 4 via lead wires (not shown).

  On the other hand, as shown in FIG. 16, plugs 58 and 58 having a substantially columnar shape are concentrically attached to the inner surfaces of the bases 56 and 56 having a bottomed cylindrical shape. The bases 56, 56 have electrode pins 57, 57... Arranged in parallel at a predetermined interval, and these electrode pins 57, 57... Are connected to plugs 58, 58, respectively. Note that the plug jack structure including the plugs 58 and 58 and the jacks 55 and 55 is a publicly known structure, and detailed description thereof is omitted.

  In such a plug jack structure, when the bases 56 and 56 are rotated relative to the outer tube 51, the plugs 58 and 58 and the jacks 55 and 55 rotate relative to each other while maintaining the contact state. The electrical contact can be maintained regardless of the arrangement of the pin holes in the socket of the fluorescent lamp mounting fixture. Moreover, since the relative rotation angle is 360 ° and the relative rotation is possible continuously, it is easy to perform irradiation at a desired angle. The irradiation direction is fixed by rubbing contact between the plugs 58 and 58 and the jacks 55 and 55.

  Note that the fixing method (mounting method) between the caps 56 and 56 and the outer tube 51 when the plug jack structure is adopted is not limited to the above-described fixing by rubbing contact, and the illumination according to the second to fourth embodiments described above. It is also possible to apply a fixing method in the apparatus. Further, cylinders (not shown) having axial regular cross-sections are provided concentrically on the inner surfaces of the caps 56, 56 and the outer surfaces of the closing portions 51b, 51b of the outer tube 51, respectively. The bases 56, 56 and the outer tubular body 51 may be fixed by fitting them. In this case, the shape of these fixing cylinders should be set appropriately so that it can be handled by one type of cap regardless of the pin hole arrangement of the socket of the existing fixture for a fluorescent lamp. Is desirable.

  In the third embodiment, a groove 31c is provided on the outer peripheral surface of the outer tube body 31 so that the caps 36 and 36 and the outer tube body 31 do not move relative to each other in the contact / separation direction. Although a structure for engaging the protrusion 36b provided on the inner surface is employed, the present fixing structure can be applied to other embodiments.

  Furthermore, in the above embodiment, the cylindrical body is used as the coupling body that holds the light source of the lighting device. However, the present invention is not limited to this, and for example, the axial cross-sectional shape may be a rectangular shape. However, it may be a regular polygonal shape, and various shapes are conceivable.

  Further, in the above embodiment, the case where the lighting device is mounted on a socket that is a fixture for a straight tube fluorescent lamp has been described as an example, but the present invention is not limited to this, for example, a spherical shape such as an incandescent lamp It is good also as a structure with which the fixture for light sources is mounted | worn.

  In the above embodiment, the base is provided with electrode pins arranged in parallel at a predetermined interval, and the case where electric power is supplied from the electrode pins has been described as an example. For example, the electrode pin is made of an insulator and holds the base by mechanical connection, and the electrical connection may be made by supplying power from the outside in addition to a separate power supply means. Further, power supply means such as a solar cell may be provided inside.

  Furthermore, in the above embodiment, the LED has been described as an example of the light source of the lighting device. However, the present invention is not limited to this, and emits directional light such as an EL (Electro Luminescence) or a fluorescent lamp having a reflecting means. Needless to say, the present invention can also be applied to a lighting device, and can be implemented in various modifications within the scope of the matters described in the claims.

It is an external appearance perspective view which shows the illuminating device which concerns on Embodiment 1 of this invention. 1 is an exploded perspective view of a lighting device according to Embodiment 1. FIG. It is the schematic of the socket which is a fixture of the fixture for straight tube | pipe type fluorescent lamps. FIG. 3 is a schematic diagram showing a base used in the lighting device according to Embodiment 1. It is the schematic which shows the other example of a nozzle | cap | die used for the illuminating device which concerns on Embodiment 1. FIG. It is the elements on larger scale of the fitting part of an outer tube body and a nozzle | cap | die. It is a disassembled perspective view of the illuminating device which concerns on Embodiment 2 of this invention. It is the schematic of the closing part of an outer tube body. It is explanatory drawing of the fixing method of an outer tube body and a nozzle | cap | die. It is a disassembled perspective view of the illuminating device which concerns on Embodiment 3 of this invention. It is the schematic of the closing part of an outer tube body. It is an external appearance perspective view of a nozzle | cap | die. It is the elements on larger scale of the fitting part of an outer tube body and a nozzle | cap | die. It is the elements on larger scale of the fitting part of the outer tube body and nozzle | cap | die of the illuminating device which concerns on Embodiment 4 of this invention. FIG. 15 is a cross-sectional view of the outer tube taken along line XV-XV in FIG. 14. It is the elements on larger scale of the fitting part of an outer tube body and a nozzle | cap | die.

Explanation of symbols

1, 21, 31, 41, 51 Outer tube (connector)
3 LED (light source)
5 Male connector (mounting means)
25 fixing holes (mounting means)
35 Elastic body (mounting means)
6, 16, 26, 36, 46, 56 Base 7, 17, 27, 37, 47, 57 Electrode pin 8 Female connector (mounting means)
28 Fixed nails (mounting means)
38a Concave part 9, 19, 29, 39, 49, 59 Contact

Claims (4)

In a lighting device comprising a pair of bases mounted on a fixture for a straight tube type light source, and a straight tube type light source held between the pair of bases,
The light source includes a cylindrical outer tube, and a substrate mounted inside the outer tube and mounted with a light emitter that emits directional light on one surface,
The holding state of the light source by the pair of bases can be changed by rotating the outer tube relative to the pair of bases so as to coincide with the direction in which the light emitting direction of the light emitter emits is desired, and And mounting means that enables the light source to be fixed to the pair of bases in a state in which the light source coincides with the direction of irradiation ,
The outer tubular body has a closing portion at an end,
The closure has a surface facing to the pair of the base, the illumination device characterized that you have contact is formed to have an arc shape which is electrically connected to the electrode to which the pair of ferrule has.   The mounting means includes an elastic body having a protruding bent portion fixed to one of the pair of bases and the outer tube body, and a plurality of concave portions formed to be engageable with the bent portion on the other side. The lighting device according to claim 1, further comprising:   The mounting means includes a convex portion provided so as to protrude toward one of the pair of bases and the outer tube body, and a concave portion provided so as to be fitted to the convex portion on the other side. The lighting device according to claim 1.   The outer tube body and the pair of bases have a cylindrical shape, and the mounting means includes grooves formed annularly on the outer peripheral surfaces of both ends of the outer tube body, and inner peripheral surfaces of the pair of bases. The lighting device according to claim 1, further comprising an engagement protrusion that engages with the formed groove, wherein the groove has a deep groove portion at a predetermined angular position in a circumferential direction.

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