JP2014053266A - Led straight pipe lamp and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high safety and low-cost LED straight pipe lamp while facilitating its clearing work from an existing fluorescent tube.SOLUTION: This invention relates to an LED straight tube lamp that stores, within a housing, a packaging circuit board having some semiconductor light-emitting elements mounted in a longer direction, a metallic and lengthwise-extending housing 2 of which sectional shape is approximately semi-cylindrical to install the packaging circuit board at a portion corresponding to a chord part of semi-circle, a translucent cover member 3 contacting to the housing, forming an approximate circular shape and extending in a longer direction, cap members 1a, 1b positioned at both ends of each of the housing and the translucent member, arranged to cover each of both ends and connectable to lighting fixture, and a power source board 7 having an electronic component 9 mounted thereon for converting an AC current supplied through terminals 4a to 4d installed at the cap members into a DC power source supplied to a semiconductor light-emitting element, and the circumference of the power source board 7 is covered by the electrical insulation cover member 3 extending in a longer direction that can be stored in the housing and then the power source board 7 is stored in the housing while being spaced apart from the housing.

Description

  The present invention relates to a straight tube lamp using an LED which is a semiconductor light emitting element, and more particularly to a configuration of a cover member that covers a power supply substrate.

  In recent years, as an energy saving measure, there has been an increasing movement to use a fluorescent lamp as a light source rather than an incandescent bulb, or a straight tube lamp using a semiconductor optical element such as an LED or a lighting device including the same in order to save energy. When a semiconductor optical element is used as the light source, there are advantages such as longer life than fluorescent lamps and no flickering or flickering over time.

  In Patent Document 1, a long semi-cylindrical housing having heat dissipation composed of a semi-cylindrical portion and a flat plate portion, and the outer diameter of the semi-cylindrical portion of the housing attached to the flat plate portion side of the housing are substantially the same. A semi-circular translucent cover having an outer diameter and a long LED mounted in close contact with the outer side of the flat plate portion of the housing and mounted with a plurality of semiconductor optical elements (LEDs) at predetermined intervals along the longitudinal direction There is disclosed an LED lighting device in which a power supply board for supplying current to an LED mounted on a mounting board and a power supply wire are housed in a hollow portion of a housing.

  In Patent Document 2, a transparent or translucent cylindrical tubular body, a heat sink attached to an opening provided in a part of the peripheral surface of the tubular body, and a plurality of semiconductor optics mounted in the tubular body An LED lighting device having a hollow structure of a heat sink including an element (LED) and directly or indirectly connected to the LED is disclosed.

  In Patent Document 3, an aluminum lamp body part and an illumination part that can be attached to and detached from the lamp body part are provided, and the illumination part is provided with a plurality of semiconductor optical elements (LEDs) based on an aluminum plate. A long LED substrate, an aluminum long base portion with the LED substrate attached to the lower surface, and a long length that is attached to the base portion so that at least the upper surface of the base portion is exposed and covers the LED substrate The lamp body includes a power supply circuit section that is connected to an external power source and emits semiconductor optical elements (LEDs), and the illumination section is mounted on the lamp body section with the upper surface of the base section. Is configured to contact the lower surface of the lamp body, and an LED lighting device is disclosed in which an LED substrate is bonded to a base with an adhesive having thermal conductivity.

  In Patent Document 1, an LED mounting substrate attached in close contact with the outer side of the flat plate portion of the housing, a power supply substrate for supplying current to the LEDs mounted on the LED mounting substrate in the hollow portion of the housing, and a power source Since it has the structure which accommodated the electric wire, the temperature in the sealed housing | casing will become high temperature. In particular, components such as capacitors and coils mounted on the power supply board may exceed 120 ° C., and a temperature difference occurs in the longitudinal direction (longitudinal direction) of the housing depending on the presence or absence of the power supply board. The LED mounting board is attached in close contact with the casing on the opposite side of the power supply board across the casing, but the temperature of the LED itself is higher than 90 ° C. It is conceivable that heat is transferred to the mounting board because of high heat. For this reason, there is a concern that the mounting board closer to the power supply board becomes hotter than the mounting board closer to the power supply board.

That is, in general, an illumination member such as a fluorescent lamp does not have a means for forcibly cooling with individual lamps, and can only be cooled by natural air cooling. It is known that the lifetime of semiconductor light emitting devices such as LEDs becomes shorter as the temperature increases. For this reason, in the structure of patent document 1, it can be considered that a deviation occurs in the temperature of the LED element between the LED mounting board that is affected by the heat generated by the power supply board and the LED mounting board that is not. Over time, there is a concern that a phenomenon may occur in which a light-emitting element affected by heat is not lit in one LED straight tube lamp and the other light-emitting elements are lit. Alternatively, in the case of LEDs connected in series, all the LEDs mounted on the same substrate are not lit, and the LED illumination device needs to be replaced.
Further, when the long case is made of an aluminum alloy, it is assumed that the power supply board and the semi-cylindrical case are close to each other, so that leakage occurs and an electric shock is caused when the case is touched. Further, since the power supply side base and the reverse side base are also connected to each other, it takes time to pass the lead wire connector through the long casing.

  In Patent Document 2, since the semiconductor optical element (LED) of the light source is directly or indirectly connected to the heat sink, the heat generated from the LED can be released to the heat sink, and the LED substrate does not become hot. The heat load on can be reduced. However, since it does not have a DC power supply unit for lighting the LED, it is necessary to provide a circuit for converting the AC current from the commercial power supply to the DC current supplied to the LED on the lamp side, which requires construction and costs. It will take. In addition, a straight tube lamp used in an existing lighting device, that is, a so-called fluorescent lamp (fluorescent tube) cannot be immediately replaced with a straight tube lamp using an LED, and if it is mistakenly connected to a commercial power supply, AC current flows, and there is concern about fire and electric shock.

Patent Document 3 discloses a method of bonding an LED substrate to a base portion which is a heat sink with a heat conductive adhesive. However, since it has a power supply unit but is integrated with the lamp, construction is required when replacing a fluorescent lamp with a straight tube lamp using an LED, which is costly. In addition, when replacing the LED substrate, it is necessary to disassemble the lamp, which takes time for maintenance. Since the power supply unit is housed in a part called a power supply circuit housing, it is sufficiently larger than the tube diameter of a straight tube lamp using an LED, and a cooling effect is expected from the flow of air. Is difficult to replace.
It is an object of the present invention to provide an LED straight tube lamp and a lighting device that are low in cost and easy to replace an existing fluorescent tube while having high safety.

  In order to achieve the above-described object, the present invention provides a mounting substrate on which a plurality of semiconductor light emitting elements are mounted in the longitudinal direction, and a substantially semi-cylindrical member having substantially the same cross-sectional shape, which corresponds to a semicircular chord. A metal-made housing for mounting the mounting board on the longitudinal direction, and a substantially circular or semi-circular shape in contact with the housing and made of resin or glass that transmits the light flux from the semiconductor light emitting element in the longitudinal direction A translucent member that extends to the cap, a cap member that is located at both ends of the casing and the translucent member, is disposed so as to cover both ends, and can be connected to a lamp, and is provided on the casing and the translucent member. In an LED straight tube lamp that houses an electronic component that converts an alternating current fed through a terminal into a DC power source that supplies the semiconductor light emitting element to a DC power source, the LED substrate covers the periphery of the power substrate. Separate the power supply board from the housing It is characterized by having a cover member having an electrical insulating property can be accommodated.

  According to the present invention, since the power supply board is covered, and the power supply board is separated from the housing and has the electrically insulating cover member that can be stored in the housing, the electrical insulation from the housing is maintained. As a result, there is no need to worry about electric shock or fire due to leakage from the power supply board to the housing, and safety is improved. In order to ensure electrical insulation, it is not necessary to coat the interior of the casing with an insulating material, so that the casing can be manufactured at low cost. In addition, since the power supply substrate covered with the cover member is housed in the housing, an LED straight tube lamp provided with a semiconductor light emitting element is used instead of a fluorescent lamp for a lamp using a fluorescent lamp as in the prior art. It can be easily replaced and eliminates the need for lamp replacement costs and construction time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of an illuminating device including a first embodiment of an LED straight tube lamp using a semiconductor light emitting element according to the present invention and a lamp for mounting the LED straight tube lamp. (A) is an assembly perspective view showing the internal structure of one end side of the straight tube lamp shown in FIG. 1, and (b) is the inside of the other end side of the straight tube lamp shown in FIG. The assembly perspective view which shows a structure. 1A is an assembled perspective view of the internal structure of one end portion of the straight tube lamp shown in FIG. 1 as viewed from the semiconductor light emitting element side, and FIG. 1B is the other perspective view of the straight tube lamp shown in FIG. The assembly perspective view which looked at the internal structure of the edge part side from the semiconductor light-emitting device side. The assembly perspective view explaining the structure of the power supply board of LED straight tube | pipe type | mold lamp. The assembly perspective view which shows the state which covered the cover member on the power supply board. The assembly perspective view which shows the state which covered the elongate housing | casing in the state of FIG. Sectional drawing when an LED straight tube lamp is viewed from the longitudinal direction. Sectional drawing when the structure of the LED straight tube | pipe type lamp which concerns on the 2nd Embodiment of this invention is seen from a longitudinal direction. The perspective view which shows the structure of the cover member used as the principal part of the LED straight tube | pipe type lamp which concerns on 2nd Embodiment. FIG. 10 is a sectional view taken along line AA in FIG. 9. Sectional drawing when the structure of the LED straight tube | pipe type lamp which concerns on the 3rd Embodiment of this invention is seen from a longitudinal direction. The perspective view which shows the structure of the cover member used as the principal part of the LED straight tube | pipe type lamp which concerns on 3rd Embodiment. BB sectional drawing of FIG. The CC sectional view taken on the line of FIG. The perspective view which shows the structure of the principal part of the LED straight tube | pipe type lamp which concerns on the 4th Embodiment of this invention. The DD sectional view taken on the line of FIG. The configuration of the main part of the LED straight tube lamp according to the fourth embodiment of the present invention is the longitudinal direction. The perspective view which shows the structure of the clamp member which concerns on 4th Embodiment.

Hereinafter, a plurality of embodiments according to the present invention will be described with reference to the accompanying drawings. In each embodiment, the same members are denoted by the same reference numerals, and the description of the first embodiment is referred to, and redundant description is omitted.
(First embodiment)
FIG. 1 shows an external perspective view of a lighting device 200 according to the present invention. The illumination device 200 includes an LED straight tube lamp 100 and a lamp 150 on which the LED straight tube lamp 100 is mounted. As for the lamp 150, LED straight tube lamps 100A and 100B, which will be described in another embodiment, are also attached and detached.

  The LED straight tube lamp 100 is a substantially semi-cylindrical member having substantially the same cross-sectional shape. The LED straight tube lamp 100 is made of a metal and extends in the longitudinal direction, which is made by bending a sheet metal or by extrusion molding of an aluminum alloy or a magnesium alloy. 3, a translucent member 3 made of resin or glass that transmits light beams emitted from the plurality of semiconductor light emitting elements 12 a... 12 b. The cap 2 is integrated into a substantially circular shape and is located at both ends of the casing 2 and the translucent member 3 and can be connected to the sockets 151a and 151b of the lamp 150 provided at both ends. Members 1a and 1b are provided.

  Here, the housing 2 has a substantially semi-cylindrical shape, but it is not necessary to limit it to a substantially semi-cylindrical shape. In FIG. 1, the translucent member 3 is drawn in a semicircular shape, but it may be configured such that the cross section is cylindrical like a fluorescent lamp and the translucent member 3 wraps the housing 2.

  The bottomed cylindrical cap members 1a and 1b are fastened and fixed to the housing 2 by a plurality of screws 5a, 5b, 5c and 5d, so that the translucent member 3 fitted to the housing 2 is integrated. It is wrapped up to become. That is, the cap members 1a and 1b are formed and arranged so as to cover both ends of the housing 2 and the translucent member 3.

  The cap members 1a and 1b may be manufactured by crimping to the housing 2 instead of screwing, or may be insert-molded. The cap members 1a and 1b have substantially the same shape as the cap members located at both ends of the existing fluorescent lamp. The shape of the LED straight tube lamp 100 is similar to a straight tube fluorescent lamp, and can easily be replaced with an existing fluorescent lamp attached to the lamp 150.

  As shown in FIGS. 2 to 3, terminals 4a and 4b are installed on one cap member 1a, and terminals 4c and 4d are installed on the other cap member 1b so as to protrude from the cap member in the longitudinal direction. . As a method for installing the terminals 4a, 4b, 4c, and 4d with respect to each cap member, there are fixing methods such as insert molding, caulking, and screw fastening, and the inside of each cap member shown in FIGS. 2 (b) and 3 (b). AC power from a commercial power source is taken into the LED straight tube lamp 100 through a connector 16 or the like disposed on the power source and supplied to the power supply substrate 7 shown in FIG. 2A through the lead wires 6a, 6b, 6c, 6d. ing.

  As shown in FIG. 4, a plurality of semiconductor light emitting elements 12a, 12b,... Shown in FIG. 3 (a) and FIG. A DC power conversion electronic component 9 for converting to a DC power supply to be supplied to the mounting boards 11a and 11b mounted in the direction is mounted. Some electronic components 9 generate heat, such as a coil or a capacitor, and some components have a high temperature exceeding 120 ° C. depending on the capacity of the flowing current. As shown in FIG. 2A, the power supply substrate 7 is housed in a substantially semi-cylindrical housing 2 and fixed to the housing 2 so as not to move. As shown in FIG. 4, the lengths of the lead wires 6a and 6b and the lead wires 6c and 6d in the longitudinal direction are different. In this embodiment, the lead wires 6a and 6b are shorter than the lead wires 6c and 6d.

  The current rectified to direct current by the electronic component 9 is supplied to the mounting boards 11a and 11b through the lead wires 13a and 13b shown in FIG. Here, the semiconductor light emitting elements 12a..., 12... B are LEDs using the EL effect.

  The mounting boards 11a and 11b arranged in parallel in the longitudinal direction are electrically connected by lead wires, jumper wires or the like (not shown). In this embodiment, the mounting substrate on which the semiconductor light emitting element is mounted is composed of two mounting substrates 11a and 11b. However, the effect of the present invention can be obtained even when there are more than two mounting substrates. It is not limited to.

  As described above, the electronic component 9 for converting the alternating current from the commercial power source fed through the terminals 4a, 4b, 4c, and 4d provided on the cap members 1a and 1b into the direct current power source for the semiconductor light emitting device is mounted. Since the power supply board 7 is housed in the housing 2, the LED straight tube lamp 100 having the LED light source can be easily replaced from the fluorescent lamp with respect to the lamp using the fluorescent lamp as in the prior art. This can be done, and there is no need for costs such as lamp replacement and construction time. For this reason, it leads to the spread of the LED straight tube lamp 100 and promotion of power saving.

  As shown in FIGS. 2 and 3, in this embodiment, the power supply substrate 7 is disposed on the lower side of the mounting substrate 11a, and nothing is disposed on the mounting substrate 11b side. In other words, the mounting substrate 11b side is planarly configured so that the inside of the housing 2 is hollow. Further, the mounting boards 11a and 11b are mounted on the flat surface portion 14 which is a portion corresponding to a semicircular chord of the housing 2. Between the flat portion 14 and the mounting substrates 11a and 11b, sheet-like resin members 10a and 10b are respectively disposed so as to be sandwiched between the flat portion 14 and the mounting substrates 11a and 11b. . In addition to the purpose of radiating the heat generated from each semiconductor light emitting element through the housing 2, the resin members 10 a and 10 b are made sticky to fix the mounting boards 11 a and 11 b to the housing 2. Or the mounting boards 11a and 11b and the housing 2 are electrically insulated. If these functions are not required, the present invention can be satisfied without the resin members 10a and 10b.

  As shown in FIG. 4, the power supply board 7 with the lead wires 6a and 6b and the lead wires 6c to 6d connected to both ends thereof is a resin holder serving as a cover member extending in the longitudinal direction as shown in FIG. The surrounding area is covered with 30. At the tips of the lead wire 6a and the lead wire 6b and at the tips of the lead wire 6c and the lead wire 6d, cap portions 16a and 16b for insertion into the connectors 16 are provided. The holder 30 is a continuous cylindrical part having a length equal to or longer than that of the power supply substrate 7 and having no cut portion in a cross-sectional shape. The holder 30 can be formed by a molding method such as extrusion molding, pultrusion molding, or injection molding. The material of the holder 30 is such that the electronic component 9 mounted on the power supply substrate 7 is not deformed by heat generation and has electrical insulation. Examples of this material include PC (polycarbonate) and PA (nylon).

  As shown in FIGS. 6 and 7, the holder 30 can be stored inside the housing 2 and has substantially the same cross-sectional shape in the longitudinal direction. The power supply substrate 7 is integrated with the holder 30 by being detachably attached to the holder 30.

  That is, as shown in FIG. 7, receiving portions 31 a and 31 b are formed on the side surfaces 30 a and 30 b located in the width direction intersecting with the longitudinal direction of the holder 30 so as to protrude in the width direction. These cradle portions 31a and 31b function as guide rail portions when the power supply substrate 7 is inserted into the holder 30 from the end side. The cradle portions 31 a and 31 b support the power supply substrate 7 so that a separation portion (space portion) 32 is formed between the power supply substrate 7 and the bottom portion 30 c of the holder 30 after the power supply substrate 7 is inserted. The separation portion 32 is for securing a distance Z1 such that the lead wire of the electronic component 9 shown in FIG. 2A protruding from the power supply substrate 7 does not touch the holder 30 or can ensure electrical insulation. It is.

  The state in which the holder 30 and the power supply board 7 are integrated as shown in FIG. 5 is referred to herein as a power supply board unit. The holder 30 covers the entire power supply board 7 (outside) from the outside, thereby separating the power supply board 7 from the housing 2 inside the housing.

  As shown in FIG. 7, the holder 30 contacts the inner surface of the housing 2 in the housing 2. For this reason, in order to make it easy to slip in the housing | casing 2, the surface which contacts the inner surface of the housing | casing 2 is made into the smooth surface. In this embodiment, the holder 30 has a cross-sectional shape without a cutting part for dividing the holder. For this reason, as a method of installing the power supply board 7 in the holder 30, the holder 30 is inserted into the holder 30 from the end of the opened holder 30.

  The holder 30 and the power supply board 7 are integrated as a power supply board unit before being attached to the casing 2 and inserted into the casing 2 from the end of the casing 2 in the state of the power supply board unit.

  According to such a configuration, the resin holder 30 that covers the periphery of the power supply substrate 7, separates the power supply substrate 7 from the housing 2, and has substantially the same cross section that can be accommodated in the housing 2 and extends in the longitudinal direction. Therefore, electrical insulation with the housing 2 is maintained, and there is no fear of electric shock or fire due to leakage to the housing 2, and safety is increased. Moreover, in order to ensure electrical insulation, it is not necessary to coat the inside of the housing 2 with an insulating material, so that the housing 2 can be manufactured at low cost. Furthermore, since the inside of the housing | casing 2 can be divided and separated into the power supply board 7 and the housing | casing 2 with the holder 30, even if the lead wires 13a and 13b of the electronic component 9 protrude, it can touch the housing | casing 2. There is no need to use expensive parts such as chip parts.

  In this embodiment, since the holder 30 (the bottom portion 30c of the holder 30) is provided between the power supply substrate 7 and the mounting substrates 11a and 11b, the heat of the power supply substrate 7 is not easily transmitted to the mounting substrates 11a and 11b. The influence of heat on 12a and 12b is uniform in all semiconductor light emitting devices. For this reason, the lifetime of the semiconductor light-emitting element is partially shortened with time, and problems caused by not lighting are eliminated.

  Furthermore, since the contact surface of the holder 30 integrated with the power supply board 7 is smoothed, the frictional resistance is reduced, and the power supply board unit can be slid within the housing 2. For this reason, the operation | work which inserts the connector 16 into the cap parts 16a and 16b of both ends can be performed easily.

Since the cross-sectional shape of the holder 30 is continuous and formed so as to be continuous, the electronic component 9 does not come into direct contact with the housing 2, and electrical insulation with the housing 2 is maintained. There is no risk of electric shock or fire due to leakage to the body 2, and safety is enhanced. Moreover, since it is not necessary to paint the inside of the housing | casing 2 in order to ensure electrical insulation, the housing | casing 2 can be manufactured cheaply.
(Second Embodiment)
An LED straight tube lamp 100A shown in FIG. 8 is detachably attached to the lamp 150 shown in FIG. 1, and its configuration is similar to that of the LED straight tube lamp 100 of the first embodiment. doing. The difference between the two is the same except that the configuration of the cover member that covers the entire power supply board 7 from the outside is different, and here, the configuration of the cover member will be mainly described.

  As shown in FIGS. 8 and 9, the holder 40 serving as the cover member has a cut portion 42 that is a cut portion in the longitudinal direction in the middle of the cross-sectional shape. The cut portion 42 forms a flat portion 420 by overlapping one end portion 42a of the cut portion 42 with the other end portion 42b. The overlapped portion 420 is provided in order to secure a creepage distance for ensuring electrical insulation between the casing 2 and the electronic component 9 directly.

  When the power supply substrate 7 is installed in the cylindrical holder 40 having a cross-sectional shape having such a cut portion 42, the power supply substrate 7 may be inserted from the opening of the end portion, or the cut portion 42 is widened and the power supply substrate is placed in the holder 40. 7 may be installed.

  As with the holder 30, the holder 40 is made of an electrically insulating material that is not deformed by heat generation of the electronic component 9 placed on the power supply substrate 7. The holder 40 can be formed by a molding process such as bending a sheet-like resin member in addition to the above-described extrusion molding.

  As shown in FIG. 8, the holder 40 protrudes in the width direction on the side surfaces 40 a and 40 b positioned in the width direction intersecting the longitudinal direction of the holder 40, and receiving portions 41 a and 41 b are formed. These cradle portions 41 a and 41 b function as guide rail portions when the power supply substrate 7 is inserted into the holder 40 from the end side. The cradle portions 41 a and 41 b support the power supply substrate 7 so that a separation portion (space portion) 132 is formed between the power supply substrate 7 and the holder 40 after the power supply substrate 7 is inserted. The separation portion 132 is for securing a distance Z1 such that the lead wire of the electronic component 9 shown in FIG. 2A protruding from the power supply substrate 7 does not touch the holder 40 or can ensure electrical insulation. It is.

  In this embodiment, gaps Y2 and Y3 are formed between the side surfaces 40a and 40b of the holder 40 and the inside of the housing 2 so as not to be caught when the holder is inserted. This is because even if the holder 40 spreads in the width direction at the cut portion 42, the holder 40 does not open any more (stopper effect) and the length Y1 in the width direction of the overlapped portion 420 in FIG. I tried not to become zero.

  Even in the LED straight tube lamp 100A provided with such a holder 40, the electrical insulation with the housing 2 is maintained, and there is no fear of an electric shock or a fire due to leakage to the housing 2, and the safety is improved. . Moreover, in order to ensure electrical insulation, since it is not necessary to coat the inside of the housing 2 with an insulating material, the housing 2 can be manufactured at low cost. Since the inside of the housing 2 can be separated and separated into the power supply substrate 7 and the housing 2 by the holder 40, even if the lead wires 13a and 13b of the electronic component 9 protrude, the housing 2 is not touched. There is no need to use expensive parts such as chip parts.

If the cut portion 42 is provided in the middle of the cross-sectional shape of the holder 40, the width of the forming method of the holder 40 can be given, and the mounting method of the power supply substrate 7 can also be given flexibility. Further, since the cut portion 42 forms an overlapping portion 420 in the cross-sectional shape, the electronic component 9 does not directly contact the housing 2 and electrical insulation with the housing 2 can be ensured. There is no worry of electric shock or fire due to leakage to 2, and safety is enhanced.
(Third embodiment)
An LED straight tube lamp 100B shown in FIG. 11 is detachably attached to the lamp 150 shown in FIG. 1, and its configuration is similar to that of the LED straight tube lamp 100 of the first embodiment. doing. The difference between the two is the same except that the configuration of the cover member that covers the entire power supply board 7 from the outside is different, and here, the configuration of the cover member will be mainly described.

  As shown in FIGS. 11, 12, and 13, the holder 50 serving as the cover member has a cut portion that becomes a cut portion in the longitudinal direction in the middle of the cross-sectional shape, as shown in FIGS. 52 is formed. The cut portion 52 forms a flat overlapping portion 520 by overlapping one end portion 52a of the cut portion 52 with the other end portion 52b. The reason why the overlapping portion 520 is provided is that a creepage distance is secured in order to secure electrical insulation between the casing 2 and the electronic component 9 directly. The difference between the holder 50 and the holder 40 is that the holder 50 is provided with a restraining means 500 for limiting the spread in the width direction of the overlapping portion 520 of the cut portion 52.

  As with the holder 40, the holder 50 is made of an electrically insulating material that is not deformed by heat generation of the electronic component 9 placed on the power supply substrate 7. The holder 50 can be formed by a molding process such as bending a sheet-like resin member.

  As shown in FIG. 11, the holder 50 protrudes in the width direction from the side surfaces 50 a and 50 b of the holder 50 in the width direction intersecting with the longitudinal direction of the holder 50, thereby forming receiving portions 51 a and 51 b. These cradle parts 51 a and 51 b function as guide rail parts when the power supply substrate 7 is inserted into the holder 50 from the end side. The cradle portions 51 a and 51 b support the power supply substrate 7 so that a separation portion (space portion) 232 is formed between the power supply substrate 7 and the holder 50 after the power supply substrate 7 is inserted. The separation portion 232 secures a distance Z1 such that the lead wires 13a and 13b of the electronic component 9 shown in FIG. 2A protruding from the power supply substrate 7 do not touch the holder 40 or can ensure electrical insulation. Is for.

  The restraining means 500 includes a hook portion 501 formed at one end portion 52 a of the cut portion 52 and a hole portion 502 formed at the other end portion 52 b of the cut portion 52. The hook portion 501 is formed by bending one end portion 52a downward in the drawing. The hole 502 is opened at the end 52 b facing the hook 501 so as to communicate with the inside of the holder 50.

  The restraining means 500 is formed by bending the plate-shaped holder 50 into a cylindrical shape, and inserting the hook portion 501 into the hole portion 502 when the end portion 52a is overlapped with the end portion 52b from above. Thus, the spread of the holder 50 in the width direction is restricted by the cut portion 52. That is, the restraining means 500 holds the overlapping portion 520 in FIGS. 12 and 13 so that the length Y1 in the width direction does not become zero.

  By making the hook portion 501 in a crisp shape, the hook portion 501 is unlikely to be detached from the hole portion 502, and the overlapping portion 520 can be more reliably prevented from spreading in the width direction. That is, the restraining means 500 functions as a stopper that prevents the holder 50 from spreading in the width direction.

  As shown in FIG. 14, in this embodiment, the restraining means 500 and the electronic component 9 mounted on the power supply substrate 7 are arranged so as to be separated by a spatial distance X1 or more that can ensure electrical insulation. Here, the position of the electronic component 9 on the power supply substrate 7 is fixed, and the position of the end of the restraining means 500 formed on the holder 50 is separated from the end of the electronic component 9 by a spatial distance X1 or more. That is, in this embodiment, the electronic component 9 is not mounted on the power supply board 7 in the vicinity of the restraining means 500.

  As described above, when the restraining means 500 and the electronic component 9 are arranged apart from each other by a spatial distance X1 or more, the electronic component 9 is not directly in contact with the housing 2, and further electrical insulation with the housing 2 is further ensured. This eliminates the risk of electric shock and fire due to leakage to the housing 2 and increases safety. In addition, since it is not necessary to paint the inside of the housing in order to ensure electrical insulation, the housing 2 can be manufactured at low cost.

  Further, since the inside of the housing 2 can be separated and separated into the power supply substrate 7 and the housing 2 by the holder 50, the lead wire of the electronic component 9 does not touch the housing 2 even if it protrudes, and the chip It is not necessary to use expensive parts such as parts.

Since the holder 50 has the cut portion 52, the forming method of the holder 50 can be given a width, and the mounting method of the power supply substrate 7 can also be given flexibility. Further, since the cut portion 52 is formed with the overlapping portion 520 in the cross-sectional shape, the electronic component 9 is not directly in contact with the housing 2, and electrical insulation with the housing 2 can be ensured. There is no risk of electric shock or fire due to leakage to the body 2, and safety is enhanced.
(Fourth embodiment)
The present embodiment relates to an LED straight tube lamp having a configuration for fixing the power supply substrate 7 to the housing 2. Here, description will be made using an example in which the LED straight tube lamp is applied to the LED straight tube lamp 100B described in the third embodiment.

  In the first to third embodiments, the power supply substrate 7 is connected to the cap member 1a by lead wires 6a and 6b, and connected to the cap member 1b (see FIG. 2) by lead wires 6c and 6d, and is shown in FIG. The lead wires 13a and 13b are connected to the mounting substrate 11a. For this reason, the moving distance, especially the moving distance in the longitudinal direction is limited. However, it is conceivable that when the power supply substrate 7 moves in the width direction and the vertical direction, a load is applied to the lead wires 6a to 6d and the lead wires 13a and 13b, causing a problem such as disconnection.

  Therefore, in this embodiment, as shown in FIGS. 16 and 17, the power supply substrate 7 and the housing 2 are fixed with an elastic clamp member 60 at a position close to the cap member 1 a. That is, holes 61, 62, 63 communicating with the power supply substrate 7, the bottom part 50 c of the holder 50, and the flat part 14 of the housing 2 facing the bottom part 50 c are formed, and the clamp member 60 is connected to the holes 61, 62, Fix by passing through 63.

  The clamp member 60 is a resin molded product, has a substantially circular pin shape, and is formed with flange portions 60a and 60b provided at its tip so as to be elastically deformable in the radial direction. A pedestal portion 60c is formed on the side opposite to the flange portions 60a and 60b. The pedestal portion 60c is formed larger in diameter than the diameter D2 of the shaft portion 60d located between the pedestal portion 60c and the flange portions 60a and 60b. A boss portion 60e having a diameter larger than the diameter D1 of the shaft portion 60d is formed on the pedestal portion 60c. The diameter D1 of the hole 63 of the housing 2 is set to satisfy D1> D2 rather than the diameter D2 of the shaft portion 60d. The length Z3 from the lower part of the flange parts 60a, 60b to the end face 60f of the boss part 60e is formed to be longer than the distance Z2 from the flat part 14 of the housing 2 to the upper surface of the power supply board 7.

  Such a clamp member 60 is inserted from the hole 63 side of the housing 2 and is inserted into the hole 62 of the bottom 50 c of the holder 50 and the hole 61 of the power supply substrate 7, and the end surface 60 f of the boss 60 e is a flat surface of the housing 2. The movement in the insertion direction is restricted by contacting the portion 14. When the resin clamp member 60 passes through each hole, the collar portions 60a and 60b are elastically deformed to narrow, and when the resin clamp member 60 passes through the hole 61 in the power supply board 7, the collar portions 60a and 60b return to their original shapes. The power board 7 is caught. Thereby, the housing | casing 2, the holder 50, and the power supply board 7 are fixed integrally.

  At this time, the length Z3 from the lower part of the flange parts 60a, 60b to the end face 60f of the boss part 60e is formed longer than the distance Z2 from the flat part 14 of the housing 2 to the upper surface of the power supply board 7, The fastening load is not excessively applied to the holder 50 and the power supply board 7 at the time of fixing, and the damage of the holder 50 and the power supply board 7 due to the fastening force can be prevented.

  Thus, since the power supply board 7 and the housing | casing 2 are being fixed by the clamp member 60 in the position close | similar to the cap member 1a. The power supply board 7 is fixed, and no load due to movement is applied to the lead wires connecting the power supply board 7 and the mounting boards 11a and 11b and the power supply board 7 and the cap member. For this reason, the malfunction of lighting failure by disconnection etc. is eliminated. In addition, since there is no problem such as the creepage distance cannot be secured due to the holder 50 and the power supply board 7 being displaced, electrical insulation can be secured, there is no risk of electric shock or fire due to leakage to the housing 2, and safety. Can increase the sex.

  As a three-way fixing structure of the housing 2, the holder 50, and the power supply substrate 7, the fixing structure may be fixed by a screw serving as a fastening member instead of fixing by the clamp member 60. In this case, if a lock insert screw is installed at a position corresponding to the hole 61 of the power supply board 7, the screw can be fixed. A general bolt may be inserted from the hole 61 into the hole 63 and fixed with a nut. Such a fixing structure using the clamp member 60 or the fastening member is not limited to the third embodiment, and may be applied to the first and second embodiments.

DESCRIPTION OF SYMBOLS 1a, 1b Cap member 2 Case 3 Translucent member 4a-4d Terminal 7 Power supply board 9 Electronic component 11a, 11b Mounting board 12a ... 12b ... Semiconductor light emitting element 14 Portion corresponding to semicircular chord 30, 40, 50 Cover member 42, 52 Cut portion 60 Clamp member 100 LED straight tube lamp 150 Lamp 200 Lighting device 420, 520 Overlapping portion 500 Constraining means

JP 2011-28946 A JP 2011-113876 A JP 2011-210669 A

Claims (7)

A mounting substrate on which a plurality of semiconductor light emitting elements are mounted in the longitudinal direction;
A substantially semi-cylindrical member having substantially the same cross-sectional shape, a metal-made housing that attaches the mounting board to a portion corresponding to a semicircular chord, and a longitudinal direction;
A translucent member extending in a longitudinal direction that is substantially circular or semicircular in contact with the housing and transmits a light beam from the semiconductor light emitting element;
Cap members located at both ends of the casing and the translucent member, disposed so as to cover both ends, and connectable to a lamp;
An LED in which a power supply board on which an electronic component for converting an alternating current fed through a terminal provided on the housing and a light-transmitting member into a direct current power source supplied to the semiconductor light emitting element is mounted is housed in the housing For straight tube lamps,
An LED straight tube lamp characterized by comprising a cover member that covers the periphery of the power supply board, separates the power supply board from the housing, and can be stored in the housing.   2. The LED straight tube lamp according to claim 1, wherein the cover member has no cut portion in the middle of its cross-sectional shape.   2. The LED straight tube lamp according to claim 1, wherein the cover member has a cut portion in the middle of its cross-sectional shape, and has a portion where the cut portion overlaps in the cross-sectional shape.   4. The LED straight tube lamp according to claim 3, further comprising restraining means for restricting the spread of the overlapped portion.   The LED straight tube lamp according to claim 4, wherein the electronic component is not mounted on the power supply board in the vicinity of the restraining means.   6. The LED according to claim 1, wherein the power supply substrate and the housing are fixed by a fastening member or a clamp member having elasticity at a position close to the cap member. Straight tube lamp.   An illumination apparatus comprising: the LED straight tube lamp according to any one of claims 1 to 6; and a lamp for mounting the LED straight tube lamp.

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