JP5636606B2 - LED lighting device - Google Patents

Description

  The present invention relates to an LED lighting device, and more particularly to an LED lighting device that can be directly attached to an existing straight tube fluorescent lamp.

  In recent years, LED lamps are rapidly spreading in place of fluorescent lamps. LED lamps have the advantages of lower power consumption and longer life than fluorescent lamps. In addition, when the LED lamp is mounted, it is possible to use an existing fluorescent lamp as it is, and it is possible to install the LED lamp as an LED illumination device by simply replacing the lamp from the fluorescent lamp to the LED lamp. For example, Patent Document 1 discloses a fluorescent lamp type LED lighting apparatus that is set to a prescribed length corresponding to the wattage of a fluorescent tube, and that can be easily attached to an existing fluorescent lamp fixture by removing the fluorescent tube. (See Patent Document 1). Such a fluorescent lamp alternative type LED lighting apparatus can be installed with relatively simple construction because it uses an existing fluorescent lamp fixture as it is, and installation costs are low, and resources are wasted. In addition, there is an advantage that the atmosphere of the room at the time of the conventional fluorescent lamp can be maintained.

JP 2001-351402 A

  By the way, the fluorescent lamp is generally provided with a ballast for controlling the lamp current value and supplying a starting voltage necessary for lighting the lamp and an appropriate preheating voltage to the electrodes. For example, in the case of a rapid start type fluorescent lamp, the lamp is lit by a combination of a rapid start type lamp having a starting auxiliary conductor and a rapid ballast which is a kind of electromagnetic ballast having a preheating winding. ing. In the case of an inverter type fluorescent lamp, the lamp is lit by an inverter circuit using an electronic ballast for high frequency lighting.

  However, the conventional fluorescent lamp type LED lighting device simply replaces the fluorescent lamp with the LED lamp, and is used by electrically connecting the LED lamp to the conventional fluorescent lamp. The ballast provided in the above is used as it is for lighting operation and the like. For this reason, the AC / DC converter provided in the LED lighting device itself and the ballast of the fluorescent light lamp may act in a superimposed manner to cause a fire accident or the like. It was also difficult to clear the technical standards based on the PSE method. In addition, when such a fire accident occurs, it is difficult to identify the cause, and there is a problem that the responsibility is unclear. Furthermore, in addition to such safety problems, the fluorescent lamp ballast itself consumes about 7-11 W of power, so there is a problem of wasteful power consumption and a long-life LED lamp is attached. However, there is a problem that the life of the safety device itself is likely to cause a failure.

  In order to avoid such a safety problem and a problem of wasted power consumption, a method of removing a ballast provided in a fluorescent lamp device may be used when replacing a fluorescent lamp with an LED lamp. However, this method has a problem in that it requires labor and cost for construction, and cannot be easily performed particularly in ordinary households. Such a problem reduces the advantage of the fluorescent lamp alternative type LED lighting device that can be installed with relatively simple construction and is low in installation cost. It may be a hindrance to the spread of

  Therefore, the problem to be solved by the present invention is that when replacing a fluorescent lamp with an LED lighting device, it can be installed with relatively simple construction, the installation cost is low, and the waste of resources can be prevented. In addition, while maintaining the advantages of maintaining the atmosphere of the room when using fluorescent lamps up to that point, an LED lighting device that can further avoid safety problems and power consumption problems is provided. There is to do.

  In order to solve the above problems, the first invention has a straight tube fluorescent lamp shape, and is provided with an LED lamp part in which a plurality of LED elements are arranged, and both ends of the LED lamp part. Provided is an LED lighting device having a pair of end caps having support pins that can be attached to a socket of a lamp and a main body connector that can be connected to a power connector connected to a power line from a power source.

  Moreover, 2nd invention provides the LED illuminating device characterized by the said main body connector part being provided in the vicinity of one of said pair of end cap parts on the basis of 1st invention. .

  Moreover, 3rd invention is based on 1st or 2nd invention, and each of these LED element of the said LED lamp part is arranged in a straight pipe axis direction, and is perpendicular | vertical to a straight pipe axis. Provided is an LED illuminating device which is disposed obliquely so that adjacent LED elements overlap each other.

  Further, according to a fourth aspect of the invention, on the basis of any one of the first to third aspects, the end cap portion is composed of two members that are rotatably attached to each other. An LED lighting device is provided.

  According to the present invention, when replacing a fluorescent lamp with an LED lighting device, it can be installed with relatively simple construction, installation cost is low, and waste of resources can be prevented. It is possible to provide an LED lighting device that can avoid the problem of safety and the waste of power consumption while maintaining the advantage that the atmosphere of the room can be maintained.

The perspective view which shows an example of the shape of the LED lighting apparatus which concerns on Example 1. FIG. 1 is an exploded perspective view of FIG. The perspective view which shows an example of the shape of the LED lighting apparatus which concerns on Example 1. FIG. The perspective view which shows an example of the shape of the LED lighting apparatus which concerns on Example 1. FIG. The figure which shows an example of the shape of the end cap part of the LED lighting apparatus of Example 1. Conceptual diagram showing an example of a power supply path in an LED lighting device The perspective view which shows an example of arrangement | positioning of the LED element of the LED lamp part of Example 2. FIG. The figure which shows an example of the shape of the attachment part of the LED lamp part of an LED lamp illuminating device of Example 3, and an end cap part.

0100 LED lighting device 0110 LED lamp part 0111 Tube body 0112 Upper half body 0113 Lower half body 0120a End cap part (main body connector part side)
0120b End cap (the side that is not the main body connector)
0122 Support pin 0123 Notch 0130 Body connector (pin)
0140 Power line (portion from main body connector part to LED lamp part)
0150 Power line (from the ceiling etc. to the power connector)
0160 Power connector 0160a Pin receiving hole 0212a Overhang part 0270 Circular substrate

  Examples of the present invention will be described below. The relationship between the embodiments and the claims is as follows. The first embodiment mainly relates to claims 1 and 2, the second embodiment mainly relates to claim 3, and the third embodiment mainly relates to claim 4. In addition, this invention is not limited to this Example at all, and can be implemented in various modes without departing from the gist thereof.

  <Overview>

  The LED illumination device of the present embodiment has a straight tube fluorescent lamp shape, and is provided with an LED lamp unit in which a plurality of LED elements are arranged, and both ends of the LED lamp unit, and is attached to a socket of a straight tube type fluorescent lamp. It is an LED lighting device having a pair of end cap portions having support pins that can be attached and a main body connector portion to which a power connector connected to a power line from a power source can be connected. Also, the LED illumination device of this embodiment includes a main body connector portion provided in the vicinity of one of the pair of end cap portions.

  <Configuration>

    (General lighting equipment)

  FIG. 1 is a perspective view showing an example of the shape of the LED lighting device according to the present embodiment. As shown in the figure, the LED lighting device 0100 according to the present embodiment includes an LED lamp part 0110, an end cap part 0120, and a main body connector part 0130.

    (LED lamp part)

  The LED lamp portion has a straight tube fluorescent lamp shape, and a plurality of LED elements are arranged. In the present invention, the “straight tube fluorescent lamp” refers to a conventional straight tube fluorescent lamp, and more specifically, 2.3.1 “JIS C7617-2“ Straight tube fluorescent lamp—Part 2: Performance specification ”. This refers to the straight tube fluorescent lamp specified in the “List of data sheets”. Thus, the shape of the LED lamp portion in the present invention is a conventional straight tube fluorescent lamp shape so that it can be directly attached to a straight tube fluorescent lamp for mounting such a conventional straight tube fluorescent lamp. It is to make it. That is, in the present invention, the “straight tube fluorescent lamp” refers to a fluorescent lamp having a shape, size, and function that can be used with the conventional straight tube fluorescent lamp as described above.

  By making the LED lamp portion into a straight fluorescent lamp shape in this way, it is possible to install the LED lighting device with relatively simple construction, the installation cost is low, and the waste of resources can be prevented. it can. In addition, it is possible to exhibit the advantages of the fluorescent lamp alternative type LED lighting device that can maintain the atmosphere of the room when the fluorescent lamp is used.

  In addition, as described below, a pair of end cap portions are provided at both ends of the LED lamp portion, and are configured to be attached to a conventional fluorescent lamp by means of support pins (corresponding to terminals of a straight tube fluorescent lamp). Therefore, the tube length of the LED lamp portion of the present invention is restricted to a size that can be attached to a conventional fluorescent lamp including the pair of end cap portions.

  The specific configuration of the LED lamp unit is the same as that of a known straight tube fluorescent lamp-shaped LED lamp. For example, a cylindrical tube body 0111 made of transparent or translucent plastic is supplied from a power source through a circuit board. A plurality of LED elements that are supplied with power and emit light are arranged in an array on a circuit board. The cylindrical tube may be made of a single material as described above. For example, the upper half is made of a metal such as aluminum, and the lower half is made of a plastic such as polycarbonate. It may be a combination of materials. FIG. 1 shows this example, and the tube body 0111 is a combination of a metal upper half body 0112 and a plastic lower half body 0113. In the case of this example, by using a metal material for the upper half, the strength of the tube is increased, or the metal part is brought into contact with the circuit board, so that the heat generated by the light emission from the circuit board The heat dissipation effect can be enhanced by conducting the metal part.

  Similarly to the conventional LED lighting device, the LED lighting device of the present invention is also provided with an AC / DC converter, a capacitor, etc., and the power input from the power source is converted into a direct current by the AC / DC converter, and the capacitor It is smoothed and supplied to each LED element. The arrangement location of the AC / DC converter or the like may be appropriately designed. For example, the AC / DC converter is arranged inside the tube (for example, the upper half shown in FIG. 1) constituting the LED lamp unit.

  The shape of the LED lamp portion shown in FIG. 1 is merely an example, and it goes without saying that the shape of the LED lamp portion according to the present invention is not limited to that shown in the drawing. The same applies to the shapes of the end cap part and the main body connector part. These are the same in other drawings.

  FIG. 2A is an exploded perspective view of FIG. For convenience of explanation, illustration of the end cap portion 0120b appearing on the right side in FIG. 1 is omitted. In this figure, the tube body 0211 constituting the LED lamp part 0210 is divided into a metal upper half body 0212 and a plastic lower half body 0213. Both halves are joined, for example, with an adhesive. Further, in the example shown in this figure, the metal portion of the tube body has an inwardly extending portion 0212a, and it is possible to enhance the heat dissipation effect by contacting the circuit board (not shown) at this portion. I have to.

  For example, an adhesive may be used for joining the LED lamp part and the end cap part. Or you may make it an LED lamp part and an end cap part turn independently.

  Further, as shown in the figure, a circular substrate 0270 made of a plastic material such as polychlorinated biphenyl is interposed between the LED lamp part 0210 and the end cap part 0220a so as to join them together. Good. By interposing such a board, when the LED lamp part and the end cap part can be rotated independently as described above, the effect that the contact part of the power line with the circuit board is less likely to be disconnected. is there.

    (End cap part)

  Returning to FIG. 1, the end cap portions 0120a and 0120b are provided with support pins which are respectively provided at both ends of the LED lamp portion and can be attached to sockets of a straight tube type fluorescent lamp. The first purpose of the end cap portion is to enable the LED lamp to be attached to a conventional fluorescent lamp as it is. Therefore, the end cap part is a cylindrical member having substantially the same tube diameter as that of the LED lamp, and the length of the end cap part is directly attached to the conventional fluorescent lamp with the end cap provided at both ends. The length can be regulated. The material of the end cap portion is not particularly limited, but for example, a metal one is used.

  Support pins 0122 are provided at the outer ends of the pair of end cap portions (on the socket side of a conventional fluorescent lamp). This support pin is for making it possible to attach the LED lamp part and the end cap part as they are to the socket of the straight tube type fluorescent lamp. That is, this support pin corresponds to a terminal provided for electrical connection to a socket of a conventional fluorescent lamp device in a known fluorescent lamp type LED lighting device. Accordingly, the size and shape of the support pin has a size and shape that can be attached to a socket of a conventional fluorescent lamp, and specifically, G13 defined in JIS C7601 “Fluorescent lamp (for general illumination)”. This applies to the caps related to. However, the difference from the terminal of the known fluorescent lamp type LED lighting device is that the support pin is not electrically connected to the socket of the conventional fluorescent lamp unit, but simply replaces the conventional fluorescent lamp unit with the LED lamp unit. It is only connected to be used as a support for holding.

  The second purpose of the end cap part is particularly to house and protect a part of the power line from the main body connector part to the circuit board. This object typically appears particularly when the main body connector portion is provided near one of the pair of end cap portions. For this purpose, the end cap part desirably has a space for accommodating a part of the power line therein. In this case, as will be described later with reference to another drawing, the pin constituting the main body connector portion is erected, for example, embedded in the wall surface of the end cap portion, and the head of the pin appearing on the inner wall surface side of the end cap portion. The power line connected to the top part (pin head) is extended in the space inside the end cap part, and further reaches the circuit board of the LED lamp part through the opening part of the connection part between the end cap part and the LED lamp part. become.

  Moreover, the end cap part may be comprised from the two members attached so that rotation was mutually independent. The specific configuration and purpose in such a case will be described later in another embodiment.

  When the main body connector portion is provided in the vicinity of one of the pair of end cap portions, as shown in the examples of FIGS. 1 and 2A, the one end cap portion (for convenience, the end cap portion (the main body connector portion side) In FIG. 1, the end cap portion 0120a appearing on the left side corresponds to this), and a notch portion 0123 may be provided near the upper end as shown in FIG. This notch portion provides a space for standing a pair of pins constituting the main body connector portion 0130 and also allows the power connector to be closely fitted when the main body connector portion is connected to the power connector. Is intended to provide space. Details of this configuration and the effects thereof will be described again in the description of the main body connector section described later.

  2A, when the circular substrate 0270 described above is interposed between the LED lamp portion and the end cap portion, the power line is connected to the circuit board via the small hole 0270a provided in the substrate. (In FIG. 2A, in order to show the shape of the small hole in an easy-to-understand manner, the power line 0240 that penetrates only one of the holes is shown).

  FIG. 3 is a diagram showing an example of the shape of the end cap portion of the LED lighting device of the present embodiment, and the end cap portion (main body connector portion side) 0220a appearing in FIG. 2A is seen from the slightly right side of the drawing. It is a perspective view. As shown in this figure, a space 0321 for accommodating a power line is provided inside the end cap part 0320, and a notch part 0323 of the end cap part (in this figure, the end cap part is viewed from the inside). Therefore, a pair of pins 0330 of the main body connector portion erected on the end cap portion space (appears as a hook-like overhang portion protruding in the space) (pins embedded in the inner wall surface of the end cap portion in this figure) A portion 0340 of each power line connected to each other is stored. Although not shown in the figure, this power line is led from the opening of the end cap part (a substantially circular opening part appearing at the upper end surface in this figure) to the LED lamp part (note that it should actually appear in this figure) The illustration of the pin head portion of the support pin 0122 shown in FIG. 1 is omitted to avoid complication).

    (Main unit connector)

  Returning to FIG. 1 again, the main body connector unit 0130 is for inputting power from a power source. The input of power from the power source is typically input of power from the primary power source, which means that power is taken directly from a power line (power line) such as a ceiling or wall. For this reason, also in the example of this figure, the main body connector portion is configured to be able to connect the power connector 0160 connected to the power line 0150 drawn from the primary power supply via the ceiling, wall, or the like. However, the main body connector portion may be used for inputting power from the battery in the event of a power failure, for example.

  The main body connector portion constitutes one of the pair of connectors together with the power connector. There is no particular limitation on the method of connecting the main body connector and the power supply connector as long as they are electrically connected. For example, one is a female connector having a pair of pins, and the other is connected to this. A male connector with a corresponding pin receiving hole is conceivable. In this case, it is desirable that the main body connector portion is a female connector and the power connector is a male connector. This is because, by doing so, it is possible to prevent the risk of electric shock at the time of installation work and the like and to improve safety, and it is not necessary to provide a space for the connector on the main body side of the LED lighting device. .

  As described above, unlike the conventional fluorescent lamp type LED lighting device, in the present invention, power is not input from the socket of the fluorescent lamp, but instead, power is directly input from the power source via the main body connector. Is done. Since power is directly input from the power supply in this way, power is supplied without going through a ballast provided in the fluorescent lamp. Accordingly, it is possible to avoid the possibility of causing a fire accident or the like by the AC / DC converter and the ballast of the fluorescent lamp fixture provided in the LED lamp itself acting in a superimposed manner. It is therefore unnecessary to remove the ballast of the fluorescent lamp.

  Input from the power source is typically performed by connecting a single socket to a single power connector that is connected to the power lines from both the hot and cold sides. By doing in this way, it can comprise so that the arrangement position of a main-body connector part may be provided in the vicinity of one of a pair of end cap parts. Thereby, for example, when attaching the main body connector part to the tip of the power line drawn out from the end cap part, the length of the power line exposed from the end cap part can be shortened. It becomes easy and the appearance can be made clear.

  There is no particular limitation on the shape of the main body connector part. For example, the hot-side and cold-side terminals are simply attached to the ends of the two power lines drawn out from the small holes provided in the end cap part. May be. However, as a preferred example, as in the example shown in FIGS. 1 and 2, a notch portion is provided near the upper end of the end cap portion, and a pair of pins constituting the main body connector portion are erected here. Can be considered. In this case, when the main body connector portion is connected to the power connector, the power connector is fitted into the notch portion of the end cap portion. For this reason, the shape and size of the notch and the shape and size of the power connector are designed to fit and fit closely together. Furthermore, this shape is such that when the power connector is fitted into the notch portion of the end cap portion, the overall shape of the LED lamp portion, end cap portion, and power connector becomes a straight tube fluorescent lamp shape. It is desirable that the power connector is a shape obtained by cutting a part of the cylindrical end cap portion.

  Speaking of the example of FIG. 2A, the shape and dimensions of the power connector 0260 are as follows when fitted into a notch portion 0223 provided near the upper end of the end cap portion (main body connector portion side) 0220a. The shape and dimensions are such that the combined shape is exactly one cylindrical shape. In addition, the pin 0230 constituting the main body connector portion erected on the notch and the pin receiving hole 0260a of the power connector are provided at positions where the power connector and the notch can be closely fitted. In FIG. 2A, a two-dot chain line 0224 drawn above the notch part 0223 indicates a virtual position of the power connector when the power connector is fitted into the notch part. It is shown that the combined shape of the connector part side is exactly one cylindrical shape.

  Although not shown, the pin receiving hole is provided with a pin receiving terminal connected to a power line (a portion extending from the ceiling or the like to the power connector) 0250 from the power source, and the pin of the main body connector portion is connected to the pin receiving hole. When the pin is inserted into the connector, the pin comes into contact with the pin receiving terminal so that power is supplied from the power connector to the main body connector portion.

  If the arrangement, shape, and dimensions of the end cap part, main body connector part (pin), and power supply connector are such, the power line exposed from the end cap part can be eliminated altogether. Can be made easier, and the appearance can be made clearer.

  2B and 2C are perspective views showing another example of the shape of the LED lighting device according to the present embodiment, which is different from FIG. 1 (for the sake of illustration, FIG. 2C is an end cap portion ( The main connector side) is shown on the right side). As a suitable example of the main body connector portion having a shape different from that shown in FIGS. 1 and 2A, as shown in FIG. 2B, the main body connector portion 0230 provided in the notch portion 0223 of the end cap portion 0220a The power connector 0260 may be connected from substantially the left-right direction (generally indicated by the arrow A direction or A ′ direction in the drawing). In the example of this figure, a power connector that is a male connector is inserted and connected to a main body connector portion that is a female connector as shown by a thick arrow a. Alternatively, as shown in FIG. 2C, the power connector 0260 is connected to the main body connector portion 0230 provided in the notch portion 0223 of the end cap portion 0220a from a substantially rear direction (a direction generally indicated by an arrow B direction in the drawing). It may be as described above. In the example of this figure, a power connector that is a male connector is inserted and connected to a main body connector portion that is a female connector as shown by a thick arrow b. In particular, as shown in the example of FIG. 2B, when the power connector is connected to the main body connector portion from substantially the left-right direction, the power connector may be connected to the main body connector portion after the LED lighting device is attached to the fluorescent lamp. Therefore, the mounting operation of the LED lighting device can be performed more easily. 1 (FIG. 2A), FIG. 2B, and FIG. 2C are merely examples of the shape, dimensions, and specific arrangement of the main body connector portion and the power connector, and male and female connectors (preferably main body connector portion). Any female connector may be used as long as it can electrically connect the female connector.

    (Power supply route)

  As described above, in the LED lighting device of the present invention, the power input from the power source through the main body connector portion is directly supplied to the circuit board without going through the ballast of the fluorescent lamp, and further, the circuit board. It is configured to be supplied to a plurality of LED elements arranged above to emit light. Here, the power supply path in the present invention will be described again in comparison with the power supply path in the conventional fluorescent lamp type LED lighting device.

  FIG. 4 is a conceptual diagram illustrating an example of a power supply path in the LED lighting device. 4A shows the power supply path in the LED lighting device of the present invention, and FIG. 4B shows the power supply path in the conventional fluorescent lamp type LED lighting device. As shown in FIG. 4B, in the conventional apparatus, the LED lamp 0410 is electrically connected to the socket 0470 of the fluorescent lamp. For this reason, the electric power introduced from the primary power supply 0400 passes through a ballast (shown as a fluorescent lamp fixture ballast 0480 in the drawing) provided in the fluorescent lamp, and an AC / DC converter provided in the LED lighting device itself. (Shown as an AC / DC converter 0490 in the figure) is also supplied to the LED circuit board 0491 of the LED lamp (note that in this figure, power is supplied from a primary power source which is a typical example, but the battery The same applies to the case of supplying from the like). For this reason, as described above, the AC / DC converter and the ballast of the fluorescent lamp fixture provided in the LED lamp itself act in a superimposed manner, which may cause a fire accident or the like.

  On the other hand, in the apparatus of the present invention shown in FIG. 4A, the LED lamp 0410 is not electrically connected to the socket 0470 of the fluorescent lamp. In addition, in this figure, since only the electrical connection is connected with the line, it does not appear in the figure, but the LED lamp is attached to the fluorescent lamp in the apparatus of the present invention. However, this merely uses the socket of the fluorescent lamp as a support for preventing the LED lamp from falling. For this reason, the power introduced from the primary power supply 0400 via the connector 0430 (shown as a concept in which the power supply connector and the main body side connector are combined in this figure) is passed through the ballast 0480 provided in the fluorescent lamp. Instead, it is supplied directly to the LED circuit board 0491 of the LED lamp via the AC / DC converter 0490 provided in the LED lighting device itself. For this reason, the possibility of causing a fire accident or the like can be avoided by the superimposed action of the AC / DC converter and the ballast of the fluorescent lamp fixture provided in the LED lamp itself.

    (Comparison with the method of taking the power directly from the power source and not attaching it to the fluorescent lamp)

  By the way, if it is only to supply power without going through the ballast of fluorescent lamps in order to deal with safety problems, it is only necessary to introduce power directly from the power source. It can be said that it is not necessary to attach to the fluorescent lamp. For example, a method of attaching to an exclusive lamp for the LED lamp or directly attaching the LED lamp to a ceiling or a wall may be used. However, such a method is a waste of resources when a dedicated lamp for the LED lamp must be prepared, and can maintain the atmosphere of the room when the fluorescent lamp is used so far. Without any sense of incongruity. In this case, the significance of using a straight tube fluorescent lamp type LED lamp is halved, which is not appropriate. In this regard, as in the present invention, if it is an LED lighting device that can be directly attached to a socket of an existing straight tube type fluorescent lamp while taking power directly from a power source, it prevents waste of resources and While maintaining the advantage of being able to maintain the atmosphere of the room, it is possible to exhibit an excellent effect of being able to cope with safety problems.

  <Effect>

  According to the invention of the present embodiment, when replacing a fluorescent lamp with an LED lighting device, it can be installed with relatively simple construction, the installation cost is low, and waste of resources can be prevented. It is possible to provide an LED lighting device that can avoid the problem of safety and the waste of power consumption while maintaining the advantage that the atmosphere of the room can be maintained when using a fluorescent lamp It becomes.

  <Overview>

  The LED illumination device of the present embodiment is basically the same as the LED illumination device of Embodiment 1, but each of the plurality of LED elements of the LED lamp unit is arranged in the straight tube axis direction and perpendicular to the straight tube axis. The LED elements are arranged obliquely so that adjacent LED elements overlap each other in any direction.

  <Configuration>

    (LED lamp part: LED element)

  FIG. 5 is a perspective view showing an example of the arrangement of the LED elements of the LED lamp portion of the present embodiment. Using this figure, each of the LED elements of the LED lamp portion of the present embodiment is arranged in the straight tube axis direction, and is disposed obliquely so that adjacent LED elements overlap in a direction perpendicular to the straight tube axis. The meaning and specific examples thereof will be described. Since the configuration of the remaining part of the LED lamp unit and the configuration of each unit other than the LED lamp unit are the same as those described in the first embodiment, the description thereof is omitted here.

  FIG. 5A shows an example of the arrangement of the LED elements of the LED lamp portion of this embodiment. As shown here, a plurality of LED elements 0514 (only one LED element is given a sign to avoid complication) of the LED lamp portion of the present embodiment on a circuit board 0515 are straight pipes. They are arranged in an array in the axial direction, and this is the same as the arrangement of LED elements in a conventional LED lamp. Here, the “straight tube axial direction” refers to the direction indicated by the arrow AA ′ in the drawing, that is, the longitudinal direction of the straight tube lamp. FIG. 5 (b) shows a typical example of how LED elements are arranged in a conventional LED lamp for reference, and the LED elements are also arranged in an array in the straight tube axis direction. ing.

  However, unlike the conventional LED lamp, the LED lamp portion of the present embodiment is disposed obliquely so that adjacent LED elements overlap in a direction perpendicular to the straight tube axis. Speaking in line with FIG. 5A, the “direction perpendicular to the straight tube axis” is a direction indicated by an arrow BB ′ in the figure, and in this direction “an oblique direction so that adjacent LED elements overlap each other”. ”Arranged” means a width (L1 in this figure) that a single LED element (LED element 0514a in this figure) occupies left and right on the line indicating this direction (on the vertical line in this figure). The width occupied by the LED element on the right (LED element 0514b in this figure) (the width indicated by L2 in this figure) partially overlaps (the width indicated by L3 in this figure overlaps). Therefore, the direction of each LED element is arranged in an oblique direction with respect to the straight tube axis. In this respect, as shown in FIG. 5B, the arrangement of the conventional LED elements does not overlap on the vertical line, which is different from the arrangement of the LED elements in the direction parallel to the straight tube axis. .

  The purpose of such an arrangement is to maintain the atmosphere of the room at the time of a fluorescent lamp so as not to change. In this regard, in the conventional LED element arrangement as shown in FIG. 5B, when at least the lower part of the tube is made of transparent plastic, the LED elements are spaced apart from each other. It seems that the elements are lined up in dots, and a sense of incongruity occurs compared to the conventional fluorescent lamp. If the lower part of the tube is made of translucent plastic, such a sense of incongruity can be eliminated. However, in order to increase the illumination efficiency, the lower part of the tube is preferably transparent.

  Therefore, in the case of the LED lighting device of the present embodiment, since the adjacent LED elements are arranged so as to overlap each other, even when the lower part of the tubular body is made of transparent plastic, Since the LED elements appear to be shining, there is no sense of incongruity compared to previous fluorescent lamps, and it is possible to maintain the atmosphere of the room when fluorescent lamps are unchanged. .

  5A shows an example in which the planar shape of each LED element is a substantially rectangular shape, the shape of the LED element is not limited to such a shape, for example, other than a substantially elliptical shape or a rectangular shape. The approximate polygon may be used. The specific meaning of “disposed diagonally so that LED elements adjacent in the direction perpendicular to the straight tube axis overlap” in these cases may be considered in the same manner as in the case of the substantially rectangular shape, for example, When the planar shape of the LED elements is substantially elliptical, it means that the widths of the adjacent LED elements occupying the left and right partly overlap, and the major axis and minor axis directions are inclined obliquely. .

  <Effect>

  Even when the lower part of the tubular body is made of a transparent plastic according to the invention of the present embodiment, there is no sense of incongruity as compared with the conventional fluorescent lamp, and the atmosphere of the room when the fluorescent lamp is more It becomes possible to maintain the same as before.

  <Overview>

  The LED lighting device according to the present embodiment is basically the same as the LED lighting device according to the first embodiment or the second embodiment, but includes two members whose end cap portions are rotatably attached independently of each other. It is characterized by that.

  <Configuration>

    (End cap part)

  FIG. 6 is a diagram showing an example of the shape of the end cap portion of the LED lamp illumination device of the present embodiment, and the end cap portion is composed of two members that are rotatably attached independently of each other. It is shown that. 6A is a perspective view of the end cap portion, and shows one end cap portion 0620a of the pair of end cap portions (the other end cap portion is the same). (The illustration is omitted because it appears symmetrically). In the example of this figure, the end cap portion 0620a includes a cylindrical member (referred to as a “cylindrical member” for convenience) 0624 having substantially the same tube diameter as the LED lamp 0610, and an outer side of the cylindrical member (fluorescent lamp). A disk-shaped member (referred to as a “disk-shaped member” for convenience) 0625 having substantially the same diameter as the end cap portion disposed on the socket side of the lamp. A support pin 0622 for attaching the LED lighting device of the present invention to a straight tube fluorescent lamp is provided on the outer surface of the disk-shaped member (the surface on the socket side of the fluorescent lamp). The cylindrical member and the disk-shaped member are rotatably attached independently of each other. In the example of this figure, both members are independent of each other by a rivet 0691 (the top of the rivet appears in this figure) that passes through a small hole (not shown in this figure) drilled in the central portion of each member. It is semi-fixed so that it can rotate.

  FIG. 6B is a cross-sectional view taken along the line AA of FIG. 6A, in which a cylindrical member 0625 and a disk-shaped member 0626 (both indicated by diagonal lines rising to the right) are small holes drilled in the respective central portions. A state is shown in which the rivets 0691 (shown by left-upward oblique lines) penetrating through the holes 0625a and 0626a are semi-fixed so as to be able to rotate independently of each other.

  Note that the rivet may be an eyelet-shaped one. In addition, a male screw is formed on one of the opposing surfaces of the cylindrical member and the disk-shaped member, and a female screw is formed on the other, so that they can be fitted gently so that they can be easily rotated by a human hand. It may be combined. Furthermore, the structure of the attachment part of the cylindrical member and the disk-shaped member is not limited to these. In short, any structure can be used as long as both members can be attached to each other so as to be easily rotatable without dropping off from each other. It may be a thing.

  According to such a configuration, when the LED lighting device is installed in an existing fluorescent lamp, the disk-shaped member of the end cap portion is maintained while keeping the LED lamp portion facing the desired illumination direction. Since it is possible to easily perform the operation of aligning only the direction with the socket of the fluorescent lamp, it is possible to easily perform the mounting operation of the LED lighting device.

  Further, as shown in the example of FIG. 6 (b), two substantially disk-shaped members 0627 having surfaces that mesh closely with each other are fixed to the opposing surfaces of the cylindrical member and the disk-shaped member, respectively. May be attached. As specific shapes of the surfaces where the members closely mesh with each other, for example, a wavy shape arranged radially, a dimple shape arranged on the circumference, and the like can be considered (shown in FIG. 6B). Is an example of the former). In addition, the fixing surface (the surface on the opposite side of the surface that meshes with each other) may be flat so that adhesion for fixing the respective members to the cylindrical member and the disk-shaped member is facilitated.

  In this case, the shapes of the surfaces of the two substantially disk-shaped members are formed in substantially the same shape. By fixing such a member to each of the cylindrical member and the disk-shaped member, the cylindrical member and the disk-shaped member are not only rotatable independently of each other, but also attached to a fluorescent lamp. In this state, the cylindrical member of the end cap part and the LED lamp part fixed thereto can be rotated and kept at an arbitrary position (angle).

  According to such a configuration, the LED element disposed in the LED lamp portion can be directed in an arbitrary direction. That is, the LED element has a certain degree of directivity in the direction of light emission. The LED elements are arranged so as to form, for example, a two-row array, and each array is arranged so as to emit light toward a diagonally outer direction (for example, a 45 degree direction) across the vertical axis. If it does so, the light from an LED element will not be directed directly but the part just under an LED lamp will be in a relatively dark state. Therefore, if the LED lamp is rotated using the above configuration and is kept at a position where one of the arrays illuminates directly below, it becomes possible to illuminate directly below. As in this example, it is possible to brightly illuminate any direction of the room by rotating the LED lamp so that the LED elements are oriented in any direction.

  FIG. 6C shows an example of the shape of the substantially disk-shaped member 0627, and shows an example of the point-symmetric waveform shape arranged radially, similar to the example of FIG. 6B. The member shown in this figure is also an example in which the fixing surface (not shown in this figure) is formed flat. In the example of this figure, since 24 waveforms are formed, the member fixed on the cylindrical member side is rotated, and the member on the disk-shaped member side is fitted at an arbitrary angle of every 15 degrees. It can be fixed while meshing. For this reason, it is desirable that all the waveforms are equiangular and have the same shape.

  <Effect>

  According to the invention of the present embodiment, when the LED lighting device is installed in an existing fluorescent lamp, the disk-shaped member of the end cap portion is maintained while keeping the LED lamp portion facing the desired illumination direction. Therefore, it is possible to easily attach the LED lighting device to the socket of the fluorescent lamp.

Claims (4)

An LED lamp part having a straight tube fluorescent lamp shape and having a plurality of LED elements disposed thereon;
A pair of end cap parts each provided with a support pin that can be attached to both ends of the LED lamp part and can be attached to a socket of a straight tube fluorescent lamp,
A main body connector portion to which a power connector connected to a power line from the power source can be connected, and
The main body connector part is provided in the end cap part,
An LED lighting device configured such that the LED lamp part and the end cap part are independently rotatable .   The LED lighting device according to claim 1, wherein the main body connector portion is provided in the vicinity of one of the pair of end cap portions.   Each of the plurality of LED elements of the LED lamp unit is arranged in a straight tube axis direction, and is disposed obliquely so that adjacent LED elements overlap in a direction perpendicular to the straight tube axis. The LED lighting device according to claim 1.   The LED lighting device according to any one of claims 1 to 3, wherein the end cap portion includes two members that are rotatably attached to each other.

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