JP5764794B1 - LED lamp - Google Patents

Abstract

Even when mounting on existing straight tube fluorescent lamps of different types, the total length can be easily changed according to the socket interval of the lighting fixtures, and the ease of attaching and detaching to the socket and after mounting the socket The LED lamp which can fully ensure the drop-off prevention function is provided. A pair of base parts (12a, 12b) are provided at both ends in the tube axis direction of the LED lamp 10 according to an embodiment, and the cylindrical main body part (11) positioned between the pair of base parts (12a, 12a) 12b), a first cylindrical main body (11a) having one end connected to one base (12a) and a second end connected to the other end of the first cylindrical main body (11a) And a second cylindrical main body portion (11b) having a full length variable mechanism capable of changing the interval between the base portions (12a, 12b) to a plurality of predetermined intervals.

Description

  The present invention relates to an LED lamp that is replaceable, that is, compatible with a conventional straight tube fluorescent lamp, and particularly to a lighting device for a straight tube fluorescent lamp having a different type (different spacing between a pair of lamp sockets). Even if it is, it is related with the LED lamp which can change the full length easily according to those various types.

  In the conventional LED lamp which can change the full length, the structure as shown to FIG. 9 (A)-(D) was known (for example, refer patent document 1).

  FIG. 9A is a perspective view of an extended state when a conventional LED lamp is used. FIG. 9B is a perspective view of the LED lamp shown in FIG. 9A in a contracted state during transportation and storage. FIG. 9C is a longitudinal sectional view of a main part of the LED lamp shown in FIG. FIG. 9D is an operation explanatory diagram of the LED lamp shown in FIG. 9C and 9D illustrate the relationship between the first light source unit 310 and the second light source unit 320, which will be described later, illustrated in FIG. 9A.

  The illumination light source device includes an illumination body H having a first light source unit 310, a second light source unit 320, a third light source unit 330, and a fourth light source unit 340, each of which is configured in a cylindrical shape, and both sides of the illumination body H. It has a cap part 350 provided at each end. Each of the first to fourth light source units 310 to 340 has a light source unit, and each light source unit includes a wiring board and a plurality of LED chips mounted on the wiring board.

  The illumination main body H is configured by first to fourth light source units 310 to 340, and can be expanded and contracted by the telescopic pipe configuration.

  The first light source unit 310 has the largest outer diameter, and the second light source unit 320 can be accommodated in the first light source unit 310 in a coaxial state.

  The third light source unit 330 can be accommodated in the second light source unit 320 in a coaxial state, and the fourth light source unit 340 can be accommodated in the third light source unit 330 in a coaxial state.

  And the guide groove 311a opened to the inner peripheral side is formed in the surrounding surface part of the support body 311 in the 1st light source unit 310 along a pipe-axis direction.

  The guide groove 311a is formed by recessing the peripheral surface portion into a rectangular cross section so as to protrude outward.

  Further, the retaining portion 323 of the second light source unit 320 is provided with a projecting portion 323a that projects so as to be slidably fitted in the guide groove 311a.

  In a state where the protrusion 323a of the retaining portion 323 is fitted in the guide groove 311a of the support 311, the light source unit 312 and the light source unit 322 of the first light source unit 310 and the second light source unit 320 are respectively They are arranged at the same position in the circumferential direction.

  Further, when the support body 321 of the second light source unit 320 is pulled out from the support body 311 of the first light source unit 310, the protrusion 323 a of the retaining portion 323 slides inside the guide groove 311 a of the support body 311.

  Thereby, the support body 321 of the second light source unit 320 is pulled out from the support body 311 while maintaining a coaxial state with the support body 311 of the first light source unit 310 without rotating in the circumferential direction.

  Then, the end surface 323b of the retaining portion 323 of the second light source unit 320 is abutted against a stopper 311b provided on the support body 311 of the first light source unit 310, so that the second light source unit 320 is the first light source unit. It is prevented from coming off from the support 311 of 310.

  When the second light source unit 320 is pulled out from the first light source unit 310 in this way, as shown in FIG. 9D, the wiring substrate 312a included in the light source unit 312 of the first light source unit 310, and the second The wiring board 322a included in the light source unit 322 of the light source unit 320 is electrically connected. As described above, the LED chips 312b and 322b are mounted on the wiring boards 312a and 322a, respectively. Here, the relationship between the first light source unit 310 and the second light source unit 320 has been described. However, the relationship between the second light source unit 320 and the third light source unit 330, and the third light source unit 330 and the fourth light source unit 340. The same applies to the relationship.

  In this way, in the case of the above-described telescopic LED lamp, it can be set in a contracted state so that the total length is minimized at the time of transportation and storage, and further, the total length is reduced when used in exchange for an existing fluorescent lamp. It can be set to the maximum stretched state. Moreover, when the full length of the illumination main body H becomes the maximum length, the wiring board which each of the 1st-4th light source units 310-340 has is electrically connected, and an LED lamp functions as an illuminating device.

JP2011-70825A

  However, in the case of the conventional telescopic LED lamp as described above, the total length must be set to the maximum when used in exchange for an existing fluorescent lamp. And in the conventional telescopic LED lamp, when the total length is the maximum length, as shown in FIG. 9D, conduction between adjacent light source units is taken and functions as a lighting device. On the other hand, when the total length is not the maximum length, that is, in the state where the total length of the LED lamp is contracted, as is apparent from FIG. Does not work as.

  Therefore, when designing a conventional LED lamp, the manufacturer must match the type of lighting fixture to which it is mounted (particularly, the same as the type resulting from the difference in socket spacing, the same applies hereinafter). It is clear that the manufacturer must appropriately determine the maximum length according to the form of the design.

  That is, even for lighting equipment for straight tube fluorescent lamps of different types due to a difference in overall length of only a few millimeters to several tens of centimeters, the overall length can be varied so that it can be lit according to these various types. Therefore, it is necessary to design the unit length of each light source unit and the number of light source units, the electrical connection method between adjacent light source units, etc. so that it can correspond exactly one-on-one according to the socket interval.

  As a result, it is necessary to supply LED lamps with different specifications for different types of luminaires, especially in markets where a variety of luminaire types are mixed due to various past circumstances. Both the manufacturer and the custodian are in a complicated and uneconomic situation.

  The present invention has been made in view of the above-mentioned reasons, and its purpose is particularly when it is mounted on a lighting device for a straight tube fluorescent lamp having a different type (a space between a pair of lamp sockets is different). Even if it exists, it is providing the LED lamp which can change the full length easily according to those various forms.

  An LED lamp according to one aspect of the present invention includes a cylindrical main body portion in which a plurality of LEDs are mounted along the tube axis direction, and a pair of cap portions at both ends of the cylindrical main body portion in the tube axis direction. The cylindrical main body portion is a first cylindrical main body portion in which a plurality of LEDs are mounted inside and one base portion and one end portion of the pair of base portions are connected. And a second cylindrical main body part connected to the other end of the first cylindrical main body part and having a total length variable mechanism capable of changing the interval between the pair of base parts to a plurality of predetermined intervals. At least one of the main body part and the second cylindrical body part has a restoring mechanism, and the restoring mechanism is configured such that the interval between the pair of base parts is set to any predetermined interval among a plurality of predetermined intervals. Also, when the interval between the pair of base parts is reduced from the set predetermined interval, To restore the spacing of the base portion of the pair to the set predetermined distance.

  Thereby, even if it is a case where it mounts | wears with the lighting fixture for existing straight tube | pipe type fluorescent lamps from which a format differs, the full length can be easily changed according to the various formats from which a space | interval of a pair of lamp socket differs.

  In addition, in any set full length, when the interval between the pair of base parts is reduced from the set predetermined interval, a restoration mechanism that restores the set predetermined interval works effectively. When attaching the LED lamp to the pair of lamp sockets or removing the LED lamp from the lamp socket, the ease of attachment / detachment can be improved.

  Furthermore, even if a material that easily expands and contracts thermally is used as the material of the cylindrical main body, the interval between the pair of base portions is maintained at a predetermined interval after being mounted on the lighting fixture by the above-described restoration mechanism. It becomes difficult to drop off.

  That is, it is possible to sufficiently ensure the full length variable function, the ease of attaching / detaching, and the function of preventing the dropping after the mounting.

  In one embodiment, the full length variable mechanism of the second cylindrical main body portion includes a first slide cylinder connected to the first cylindrical main body portion and a first slide cylinder connected to the other base portion of the pair of base portions. The first slide cylinder is formed with a guide projection that protrudes outward from the first slide cylinder. The second slide cylinder has a tube shaft on the inner surface of the second slide cylinder. A guide recess is linearly formed along the direction, and the first slide cylinder and the second slide cylinder are arranged in the tube axis direction within a predetermined range by inserting the guide protrusion into the guide recess. It may be slidably engaged along.

  As a result, relative rotation between the first slide cylinder and the second slide cylinder (rotation with the tube axis as the center of rotation) is prevented, so that the full length variable mechanism of the second cylindrical main body portion operates effectively. The total length of the LED lamp can be stably varied along the tube axis direction.

  In one embodiment, a part of the 1st slide cylinder of the 2nd cylindrical body part is inserted in the 2nd slide cylinder so that a slide along a pipe axis direction is possible, and it is inserted in the 2nd slide cylinder. A plurality of unlocking claws are formed along the tube axis direction, the first slide cylinder is formed with a locking projection protruding outward of the first slide cylinder, and the distance between the pair of base parts is When one of the plurality of predetermined intervals is set, the tube is arranged so that the locking convex portion of the first slide cylinder faces the unlocking claw portion of the second slide cylinder. When the second slide tube is displaced in the tube axis direction with respect to the first slide tube by being displaced outwardly orthogonal to the axial direction, and the interval between the pair of base parts is set to another predetermined interval. Is that the claw portion for unlocking the second slide cylinder is pressed inward. Ri, displacement outward of the locking projection is eliminated position regulating in the tube axis direction may be released.

  As a result, in addition to the effective operation of the full length variable mechanism of the second main body portion, when any one of the plurality of predetermined intervals is set, the first slide cylinder at that interval is set. Thus, the position of the second slide cylinder is regulated.

  Therefore, even if the interval between the pair of base portions is set to any of a plurality of predetermined intervals, the mechanical position restriction, that is, the function stop (locking) of the total length variable mechanism of the second cylindrical main body portion. ), The entire length of the LED lamp is stably fixed to a certain length.

  As a result, it is possible to sufficiently ensure the ease of attachment and detachment and the function of preventing the drop-off after the attachment as in the case of a normal straight tube fluorescent tube.

  In one embodiment, the second slide cylinder is formed with at least a pair of unlocking claw portions in a cross section orthogonal to the tube axis direction, and the pair of unlocking claw portions is located at a point where the tube axis is located. On the other hand, it may be located substantially point-symmetrically.

  As a result, the pressing force when the unlocking claw portion of the second slide cylinder is pushed inward acts in the opposite direction to cancel out, so unnecessary or excessive deformation force is applied to the second cylindrical body portion. The position restriction of the second slide cylinder relative to the first slide cylinder can be canceled easily and smoothly without being added.

  As a result, the second slide cylinder can freely slide with respect to the first slide cylinder, and the full length variable function becomes effective.

  In one embodiment, the restoration mechanism may be a spring stored in the hollow portion of the second slide cylinder.

  As a result, for example, when mounted on an existing luminaire for a straight tube fluorescent lamp, the spring can be stretched so that the luminaire can be easily mounted on the socket. Therefore, the fall from the lighting fixture can be effectively prevented.

  That is, it is possible to sufficiently secure the ease of attachment and detachment and the function of preventing the attachment after the attachment.

  According to the LED lamp of the present invention, even when it is mounted on an existing lighting device for a straight tube fluorescent lamp having a different type, its total length can be easily changed according to these various types, and it can be easily attached and detached. It is possible to sufficiently secure the improvement of the performance and the function of preventing the dropout after the mounting.

FIG. 1 is an overall view of a straight tube LED lamp according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view of a second tubular main body portion and a base portion of the straight tube type LED lamp in the embodiment of the present invention. FIG. 3 is an exploded perspective view of the second cylindrical main body portion and the base portion. 4A is a view of only the second cylindrical main body portion and the base portion as viewed from the direction in which the pair of pin terminals of the base portion overlap, and FIG. 4B is a view of IVB- of FIG. 4A. 4C is a cross-sectional view orthogonal to the tube axis direction cut along the IVB line, and FIG. 4C is a cross-sectional view cut along the tube axis direction along the IVC-IVC line of FIG. ) Is a cross-sectional view orthogonal to the tube axis direction taken along line IVD-IVD in FIG. FIG. 5A is a partial cross-sectional perspective view in the direction along the tube axis in a state before the base part is pressed when the distance between the pair of base parts is set to the maximum. ) Is a partial cross-sectional perspective view in the direction along the tube axis in a state after the base part is pressed when the distance between the pair of base parts is set to the maximum. 6A is a partial cross-sectional perspective view in the direction along the tube axis in a state before the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. ) Is a partial cross-sectional perspective view in the direction along the tube axis in a state after the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. 7 (A) is a partial cross-sectional view showing a state before the base part is pressed when the distance between the pair of base parts is set to the maximum, and FIG. 7 (B) is a pair of base parts. FIG. 7C is a partial cross-sectional view showing a state after the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. 7D is a partial cross-sectional view showing a state before the part is pressed, and FIG. 7D shows a state after the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. FIG. 8 is an overall view of a straight tube type LED lamp according to another embodiment of the present invention. FIG. 9 (A) is a perspective view of an extended state when using a conventional LED lamp, and FIG. 9 (B) is contracted during transportation or storage of the LED lamp shown in FIG. 9 (A). FIG. 9 (C) is a longitudinal sectional view of the main part of the LED lamp shown in FIG. 9 (A), and FIG. 9 (D) is the LED shown in FIG. 9 (A). It is operation | movement explanatory drawing of a lamp | ramp.

  Hereinafter, in order to describe an embodiment of the present invention, it will be described with reference to the drawings. In the following description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted. In the description, words indicating directions such as “up” and “down” are convenient words based on the state shown in the drawings.

  FIG. 1 is an overall view of a straight tube LED lamp according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view of a second tubular main body portion and a base portion of the straight tube type LED lamp in the embodiment of the present invention. FIG. 3 is an exploded perspective view of the second cylindrical main body portion and the base portion. FIG. 4A is a view of only the second cylindrical main body portion and the base portion as viewed from the direction in which the pair of pin terminals of the base portion overlap. FIG. 4B is a cross-sectional view orthogonal to the tube axis direction taken along the line IVB-IVB in FIG. FIG. 4C is a cross-sectional view taken along the tube axis direction along the IVC-IVC line in FIG. FIG. 4D is a cross-sectional view orthogonal to the tube axis direction taken along the line IVD-IVD in FIG. FIG. 5A is a partial cross-sectional perspective view in the direction along the tube axis in a state before the base part is pressed when the distance between the pair of base parts is set to the maximum. FIG. 5B is a partial cross-sectional perspective view in the direction along the tube axis in a state after the base part is pressed when the distance between the pair of base parts is set to the maximum. FIG. 6A is a partial cross-sectional perspective view in the direction along the tube axis before the base is pressed when the distance between the pair of bases is set to the minimum. FIG. 6B is a partial cross-sectional perspective view in the direction along the tube axis in a state after the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. 7A is a partial cross-sectional view showing a state before the base part is pressed when the distance between the pair of base parts is set to the maximum. FIG. 7B is a partial cross-sectional view showing a state after the base part is pressed when the distance between the pair of base parts is set to the maximum. FIG. 7C is a partial cross-sectional view showing a state before the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. 7D is a partial cross-sectional view showing a state after the base part is pressed when the distance between the pair of base parts is set to the minimum. FIG. 8 is an overall view of a straight tube type LED lamp according to another embodiment of the present invention.

  As shown in FIG. 1, the entire straight tube LED lamp 10 is composed of a cylindrical main body portion 11 and a pair of base portions 12 a and 12 b provided at both ends thereof.

  Here, although the tube axis direction of the cylindrical main body 11 is indicated by a one-dot chain line TA of a double-ended arrow, a plurality of LEDs 112a (see FIG. 4D) serve as a light source, for example, a long circuit board 111a. It is mounted in a state of being arranged in one or more rows at substantially equal intervals along the tube axis direction (see FIG. 4D).

  Further, the cylindrical main body 11 has an effect of diffusing light emitted from the plurality of LEDs 112a mounted therein along the tube axis direction in the tube axis direction and in a direction orthogonal to the tube axis direction (anti-glare). Effect) and a translucent lens portion positioned at the top and a long circuit board 111a on which the plurality of LEDs 112a are placed on the upper surface so as to sandwich and wrap with the translucent lens portion to form a palm shape It is comprised from the cover part located in the lower part combined (refer FIG.4 (D)).

  Here, an example of the material of the translucent lens portion is a resin material that is lightweight and high in strength, and that can ensure appropriate insulation. Examples of such resin materials include acrylic and PC (polycarbonate).

  On the other hand, examples of the material of the cover portion include aluminum, an aluminum alloy, and an expensive metal material such as a magnesium alloy that is lightweight, robust, and excellent in heat dissipation.

  In addition, the cylindrical main body 11 includes the plurality of LEDs 112a described above, and a first cylindrical main body 11a having one end connected to one of the pair of bases 12a and 12b. Are connected to the other end portion of the first cylindrical main body portion 11a, and the interval between the pair of base portions 12a and 12b is set to a plurality of predetermined intervals (in the case of the present embodiment, two settings of the maximum interval and the minimum interval) 2nd cylindrical main-body part 11b which has a full length variable mechanism for changing to a space | interval) is included.

  Here, the full length variable mechanism is defined as a mechanism that can change the interval between the base portion 12a and the base portion 12b to a plurality of predetermined intervals.

  By this full length variable mechanism, the interval between the base portion 12a and the base portion 12b can be arbitrarily set to one of two set intervals of the maximum interval and the minimum interval.

  Furthermore, the base part 12a is provided with two pin terminals 122a that enable electrical connection with an external lighting fixture (not shown, the same applies hereinafter), and the base part 12b has an external lighting fixture and Are provided with two pin terminals 122b. The pin terminals 122a and 122b are electrically connected to the LED 112a. This electrical connection includes an intermittent connection in which the LED lamp 10 functions as a lighting device.

  Next, as shown in FIG. 2, the second cylindrical main body portion 11 b has one end portion (upper right end portion in FIG. 2) connected to the base portion 12 b having two pin terminals 122 b and the other end portion. The part (the lower left end in FIG. 2) is connected to the first cylindrical main body 11a.

  Further, the total length variable mechanism of the second cylindrical main body portion 11b has a first slide cylinder 13 connected so as to cover the upper right end portion of the first cylindrical main body portion 11a, and an outer diameter of the first slide cylinder 13. By having a large inner diameter, they are slidably fitted to each other along the tube axis, and have a restoring mechanism, which will be described later, at one end thereof (upper right end in FIG. 2). It is comprised by the 2nd slide cylinder 14 connected with 12b.

  Incidentally, FIG. 2 is a diagram showing a state when the interval between the base portion 12a and the base portion 12b is set to the maximum interval.

  Next, as shown in FIG. 3, the second cylindrical main body 11 b is connected to the first slide cylinder 13 connected to the first cylindrical main body 11 a and the base 12 b via the restoring mechanism. It can be disassembled into the second slide cylinder 14.

  The first slide cylinder 13 and the second slide cylinder 14 are slidably engaged with each other in a predetermined range along the tube axis direction as will be described later.

  Here, the first slide cylinder 13 is elastically provided with a guide convex portion 13a that is orthogonal to the tube axis direction and protrudes outward, and a lock convex portion 13b that is orthogonal to the tube axis direction and protrudes outward. It is formed to be deformable.

  Further, the guide convex portion 13a is fitted into a guide concave portion 14c (see FIGS. 4B and 4C) formed on the inner wall of the second slide cylinder 14, and the first slide cylinder 13 is the second slide. The position of the cylinder 14 is restricted so as not to rotate in the circumferential direction around the tube axis.

  Further, since the guide recess 14c is linearly formed along the tube axis direction, the second slide cylinder 14 can freely slide within a predetermined range with respect to the first slide cylinder 13. The predetermined range is a range of the length of the guide recess 14c. One example of the length of the guide recess 14c is a maximum interval that is one predetermined interval and a minimum interval that is the other predetermined interval among the two-step intervals of the base portion 12a and the base portion 12b set by the full length variable mechanism. Can be the difference between

  On the other hand, the second slide cylinder 14 stores a coil spring (elastic body) 15 as a restoring mechanism on the inner peripheral side of one end thereof (upper right end in FIG. 3), and the base portion 12b via the restoring mechanism. The restoration mechanism will be described in detail later.

  Here, the restoration mechanism means that when the interval between the base portion 12a and the base portion 12b is set to a predetermined interval, the interval between the base portion 12a and the base portion 12b is reduced from the set predetermined interval. Is defined as a mechanism for restoring to the set predetermined interval. For example, the case where the space | interval of the nozzle | cap | die part 12a and the nozzle | cap | die part 12b is set to the 1st predetermined space | interval is demonstrated concretely. For the sake of explanation, a predetermined interval in which the interval between the base portion 12a and the base portion 12b is narrow after the first predetermined interval is referred to as a second predetermined interval. In this case, when the interval between the base portion 12a and the base portion 12b is contracted from the first predetermined interval between the first predetermined interval and the second predetermined interval by an external force along the tube axis direction, The restoration mechanism is a mechanism that restores the interval between the base portion 12a and the base portion 12b to a first predetermined interval.

  Here, the pair of locking claws 121 b formed integrally with the base portion 12 b are inserted into the inner peripheral side of the coil spring 15.

  When open (when the straight tube LED lamp 10 is not attached to an external lighting device not shown, that is, the same meaning as when the base is not pressed by the socket, the same applies hereinafter), the coil spring 15 tries to expand. Since the locking claw 121b is locked to the locking convex portion 14d (see FIG. 4C), the position of the straight tube LED lamp 10 is regulated so as to be fixed at the maximum length.

  That is, when the base portion 12a or the base portion 12b of the straight tube LED lamp 10 is attached to or detached from a socket (not shown, the same applies hereinafter) of an external lighting fixture, even if the entire length is temporarily reduced, A restoring mechanism for returning to each preset full length operates.

Thereby, the improvement of the ease of attachment / detachment and the drop-off preventing function after the attachment can be sufficiently secured.
In addition, the second slide tube 14 is formed with an unlocking claw portion 14a, and when the distance between the base part 12a and the base part 12b is set to the maximum distance (the total length of the straight tube LED lamp 10 is maximized). (When set), the locking convex portion 13b and the unlocking claw portion 14a are in contact with each other or face each other with a slight gap.

  Further, the second slide tube 14 is formed with a lock releasing claw portion 14b, and the distance between the base portion 12a and the base portion 12b is set to the minimum interval (the total length of the straight tube LED lamp 10 is minimized). When set, the locking convex portion 13b and the unlocking claw portion 14b are in contact with each other or face each other with a slight gap.

  Next, with reference to FIGS. 4A to 4C, the relationship between the first slide cylinder 13 and the second slide cylinder 14 when the interval between the cap portion 12a and the cap portion 12b is set to the maximum interval. Will be described.

  As described above, the first slide cylinder 13 is formed with the locking projection 13b that is orthogonal to the tube axis direction and protrudes outward, and the locking projection 13b of the first slide cylinder 13 is the second projection 13b. The slide cylinder 14 is displaced outwardly perpendicular to the tube axis direction in such a positional relationship as to come into contact with the unlocking claw portion 14a of the slide cylinder 14 or face it with a slight gap.

  As a result, when the locking convex portion 13b comes out of contact with the unlocking claw portion 14a or moves away from the position facing the locking claw portion 14a with a slight gap, it interferes with the main body of the second slide cylinder 14, and therefore the second slide cylinder The position of the first slide cylinder 13 is regulated in the tube axis direction (the same as the slide direction of the second slide cylinder 14 with respect to the first slide cylinder 13, the same applies hereinafter).

  As a result, the overall length of the straight tube LED lamp 10 is stably fixed to the maximum length by the function stop (lock) of the overall length variable mechanism of the second cylindrical main body portion 11b.

  Further, as shown in FIG. 4B, in the cross section orthogonal to the tube axis direction of the second slide cylinder 14, at least a pair of unlocking claw portions 14a is substantially pointed to a point P indicating the position of the tube axis. It is formed so as to be located symmetrically.

  Thereby, when it is going to set and change the space | interval of the nozzle | cap | die part 12a and the nozzle | cap | die part 12b to the minimum space | interval, when a pair of unlocking nail | claw parts 14a of the 2nd slide cylinder 14 are pushed inward manually (fingertip) Since the pressing force acts in the opposite direction and cancels out, unnecessary or excessive deformation force is not applied to the second cylindrical main body portion 11b, and the position of the second slide cylinder 14 in the tube axis direction smoothly with respect to the first slide cylinder 13 Regulations can be easily released.

  Note that the above-described pair of unlocking claw portions 14a is located approximately point-symmetrically with respect to the point P indicating the position of the tube axis. It is defined that the other unlocking claw portion 14a and a part or all of the claw portion 14a are overlapped when rotated in a range from 150 ° to 210 ° from the center.

  Further, the tube axis is an axis extending in the longitudinal direction of the straight tube LED lamp 10, and in the case of the present embodiment, a pair of pin terminals 122b (see FIG. 3) in one base 12b. A straight line connecting the pair of pin terminals 122a in the other base portion 12a and a straight line connecting the pair of pin terminals 122b (the length of which corresponds to the separation distance of the pair of pin terminals 122b). It is almost coincident with a straight line connecting points that bisect the straight line corresponding to the separation distance of the terminal 122a.

  Therefore, if the outer periphery of the second slide cylinder 14 (excluding the unlocking claw portion 14a) is a perfect circle, the point P indicating the position of the tube axis substantially coincides with the center of the perfect circle.

  A guide convex portion 13a that is orthogonal to the tube axis direction of the first slide cylinder 13 and protrudes outward is linearly formed on the inner surface of the second slide cylinder 14 along the tube axis direction. By fitting in 14c, the first slide cylinder 13 and the second slide cylinder 14 are engaged with each other so as to be slidable along the tube axis direction within a predetermined range.

  This prevents relative rotation between the first slide cylinder 13 and the second slide cylinder 14 (rotation with the tube axis as the rotation center), so that the full length variable mechanism of the second cylindrical main body portion 11b is effective. The total length of the straight tube type LED lamp 10 can be stably varied along the tube axis direction.

  Further, as shown in FIG. 4C, a coil spring 15 is housed in the second slide cylinder 14, and after the distance between the base part 12a and the base part 12b is set to the maximum distance, external illumination is performed. When the gap is narrower than the interval by being attached to the instrument, the elastic force of the coil spring 15 acts so that the interval between the base portion 12a and the base portion 12b is restored to the set predetermined interval.

  On the other hand, when the straight tube LED lamp 10 is not attached to an external lighting fixture, that is, when both the base part 12a and the base part 12b are open, the coil spring 15 is elastically deformed in the extending direction.

  When the coil spring 15 is extended to a predetermined length, the pair of locking claws 121b of the base portion 12b are locked to the locking convex portion 14d, so that the straight tube LED lamp 10 is fixed to the maximum length. The position is regulated as follows.

  With the above configuration, elasticity is obtained by the coil spring 15, and therefore, when mounted on an existing lighting fixture for a straight tube fluorescent lamp, it is easy to mount the lighting fixture on a socket, and once attached Since the restoring mechanism acts, it is possible to effectively prevent the lighting apparatus from falling.

  In addition, the guide convex portion 13 a that is orthogonal to the tube axis direction of the first slide cylinder 13 and protrudes outward is a guide recess formed linearly along the tube axis direction on the inner surface of the second slide cylinder 14. 14c.

  Thus, the first slide cylinder 13 and the second slide cylinder 14 are slidably engaged within a predetermined range set by the length of the guide recess 14c formed along the tube axis direction.

  When the interval between the base part 12a and the base part 12b is to be set to the minimum distance, first, as described above, the lock release claw part 14a of the second slide cylinder 14 is first moved inward manually (fingertip). The position restriction in the tube axis direction of the second slide cylinder 14 relative to the first slide cylinder 13 is released.

  Next, when the second slide cylinder 14 is slid leftward, the locking projection 13b that is orthogonal to the tube axis direction of the first slide cylinder 13 and protrudes outward contacts the unlocking claw 14b. It is regulated in such a positional relationship as to face each other through contact or a slight gap.

  Thereby, the full length of the straight tube | pipe type LED lamp 10 is stably fixed to the minimum length by the function stop (lock) of the full length variable mechanism of the 2nd cylindrical main-body part 11b.

  Further, when the straight tube LED lamp 10 with the total length set to the minimum length is mounted on an external lighting fixture, the base portion 12b is pressed by the socket in the direction of the second slide cylinder 14 along the tube axis direction. Is done.

  Then, the coil spring 15 housed between the base part 12b and the locking convex part 14d crawls, and the locking claw 121b comes close to the inner wall of the first slide cylinder 13, but the contact prevention formed on the inner wall thereof. The interference 13c prevents the interference between the two in advance.

  As described above, a part of the first slide cylinder 13 of the second cylindrical main body portion 11b is fitted and inserted into the inner peripheral side of the second slide cylinder 14 so as to be slidable along the tube axis direction. 14, unlocking claw portions 14a and 14b are formed along the tube axis direction.

  The first slide cylinder 13 is formed with a locking projection 13b that is orthogonal to the tube axis direction and protrudes outward, and the interval between the pair of base portions 12a and 12b is any one of a plurality of predetermined intervals. When the interval is set, the locking projection 13b of the first slide cylinder 13 is perpendicular to the tube axis direction while contacting the unlocking claw 14a or the unlocking claw 14b of the second slide cylinder 14. By displacing to the outside, the position of the second slide cylinder 14 is regulated in the tube axis direction with respect to the first slide cylinder 13.

  Furthermore, when it is going to set the space | interval of a pair of nozzle | cap | die parts 12a and 12b to another predetermined space | interval, the nail | claw part 14a for unlocking of the 2nd slide cylinder 14 or the nail | claw part 14b for unlocking is pressed inward. Accordingly, the outward displacement of the locking projection 13b is eliminated, and the position restriction in the tube axis direction is released.

  As a result, the second slide cylinder 14 can be freely slid relative to the first slide cylinder 13, and the interval between the free slide by the release of the position restriction and the pair of base portions 12a and 12b is a plurality of predetermined intervals. Depending on the position restriction when set to any one of the intervals, the interval between the pair of base portions 12a and 12b can be changed to a plurality of predetermined intervals.

  Further, as shown in FIG. 4D, in the first cylindrical main body portion 11a, the left and right ends of the circuit board 111a are recessed portions of the cover portion positioned at the lower portion of the first cylindrical main body portion 11a. It is firmly clamped by being fitted in.

  Further, the LEDs 112a are mounted in a state of being arranged in one or more rows at substantially equal intervals along the tube axis direction on the upper surface of the circuit board 111a.

  Next, FIG. 5A shows that the total length of the straight tube LED lamp 10 is stably fixed to the maximum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b. Indicates the opened state.

  In this state, the locking projection 13b that is formed on the first slide cylinder 13 and that is orthogonal to the tube axis direction and protrudes outwardly is in contact with the unlocking claw 14a of the second slide cylinder 14. The second slide cylinder 14 is regulated in the pipe axis direction with respect to the first slide cylinder 13 by being displaced outwardly orthogonal to the tube axis direction so as to face each other with a slight gap.

  Further, since the locking claw 121b of the base part 12b is locked to the locking convex part 14d formed so as to protrude inwardly toward the inside of the second slide cylinder 14, The position of the base portion 12b is regulated by the position, and the entire length when opened is fixed.

  On the other hand, in FIG. 5B, the total length of the straight tube LED lamp 10 is stably fixed to the maximum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b is It is in a state of being attached to an external lighting fixture and pressed by a socket.

  As described above, when the interval between the base portion 12a and the base portion 12b is narrower than the interval at the time of opening, the elastic force of the coil spring 15 is set at a predetermined interval (see FIG. 5 (A), the total length is set to the maximum length).

  Next, FIG. 6A shows that the total length of the straight tube LED lamp 10 is stably fixed to the minimum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b. Indicates the opened state.

  In this state, the locking convex portion 13b that is formed on the first slide cylinder 13 and is orthogonal to the tube axis direction and protrudes outward is in contact with the unlocking claw portion 14b of the second slide cylinder 14. By displacing outward in the direction perpendicular to the tube axis direction, the position of the second slide cylinder 14 is restricted in the tube axis direction with respect to the first slide cylinder 13.

  Further, since the locking claw 121b of the base part 12b is locked to the locking convex part 14d formed in a ring shape inwardly on the inner side of the second slide cylinder 14, the base part is formed at that position. The position of 12b is regulated.

  On the other hand, in FIG. 6B, the total length of the straight tube LED lamp 10 is stably fixed to the minimum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b is It is a state where it is mounted on an external lighting fixture and pressed by a socket.

  As described above, when the interval between the base portion 12a and the base portion 12b is narrower than the interval at the time of opening, the elastic force of the coil spring 15 is set at a predetermined interval (see FIG. 6 (A), in which the total length is set to the minimum length).

  Next, FIG. 7A shows that the total length of the straight tube LED lamp 10 is stably fixed to the maximum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b. Indicates the opened state.

  In this state, the locking projection 13b formed in the first slide cylinder 13 and projecting outward perpendicular to the tube axis direction is in contact with the unlocking claw 14a of the second slide cylinder 14. By displacing outward in the direction perpendicular to the tube axis direction, the position of the second slide cylinder 14 is restricted in the tube axis direction with respect to the first slide cylinder 13.

  Further, the locking claw 121b of the base portion 12b is locked by a locking convex portion 14d formed so as to protrude inwardly toward the inside of the second slide cylinder 14, so that the position thereof Thus, the position of the base portion 12b is regulated and the total length when opened is fixed.

  On the other hand, in FIG. 7B, the total length of the straight tube LED lamp 10 is stably fixed to the maximum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b is It is in a state of being attached to an external lighting fixture and pressed by a socket.

  As described above, when the interval between the base portion 12a and the base portion 12b is narrower than the interval at the time of opening, the elastic force of the coil spring 15 is set to a predetermined interval (see FIG. 7 (A), in which the full length is set to the maximum length).

  Next, FIG. 7C shows that the total length of the straight tube LED lamp 10 is stably fixed to the minimum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b. Indicates the opened state.

  In this state, the locking convex portion 13b that is formed on the first slide cylinder 13 and is orthogonal to the tube axis direction and protrudes outward is in contact with the unlocking claw portion 14b of the second slide cylinder 14. By displacing outward in the direction perpendicular to the tube axis direction, the position of the second slide cylinder 14 is restricted in the tube axis direction with respect to the first slide cylinder 13.

  Further, the locking claw 121b of the base portion 12b is locked by a locking convex portion 14d formed so as to protrude inwardly toward the inside of the second slide cylinder 14, so that the position thereof Thus, the position of the base portion 12b is regulated and the total length when opened is fixed.

  On the other hand, in FIG. 7D, the total length of the straight tube LED lamp 10 is stably fixed to the minimum length by the function stop (lock) of the total length variable mechanism of the second cylindrical main body portion 11b, and the base portion 12b is It is in a state of being attached to an external lighting fixture and pressed by a socket.

  As described above, when the interval between the base portion 12a and the base portion 12b is narrower than the interval at the time of opening, the elastic force of the coil spring 15 is set to a predetermined interval (see FIG. 7 (C), and the total length is set to the minimum length).

  In the LED lamp 10 having the above configuration, even when the total length of the LED lamp 10 is varied, the electrical connection (intermittently) between the LED 112a mounted inside the first cylindrical main body 11a and the pin terminals 122a and 122b. Connection) is maintained. Therefore, in the LED lamp 10 having the above-described configuration, even if the interval between the pair of base parts 12a and 12b is set to a predetermined interval (in the above-described embodiment, the interval is the maximum length or the minimum length), the LED lamp 10 is a lighting device. Can function as.

  On the other hand, as shown in FIG. 8, the whole straight tube | pipe type LED lamp 20 in another embodiment is comprised from the cylindrical main-body part 21 and a pair of nozzle | cap | die part 22a, 22b provided in the both ends. Yes.

  Here, similar to that of the straight tube LED lamp 10 described above, the cylindrical main body 21 transmits light emitted from a plurality of LEDs mounted therein along the tube axis direction in the tube axis direction and its tube axis. A long circuit board (not shown) on which a translucent lens portion having an effect of diffusing in a direction orthogonal to the direction (anti-glare effect) and located above and a plurality of LEDs (not shown) are mounted. And a cover part that is combined with the translucent lens part from the lower part while fitting with the translucent lens part.

In addition, the cylindrical main body portion 21 includes the plurality of LEDs described above, and is a first cylindrical main body portion connected to one of the pair of base portions 22a and 22b via the restoring mechanism. 21a and the other end of the first cylindrical main body portion 21a are connected to each other with a plurality of predetermined intervals (in the case of this embodiment, the maximum interval and the minimum interval). 2nd cylindrical main-body part 21b which has a full length variable mechanism for changing to 2 setting intervals) is included.
With this full length variable mechanism, the interval between the base portion 22a and the base portion 22b can be arbitrarily set to one of two set intervals of the maximum interval and the minimum interval.

  Further, the base portion 22a is provided with two pin terminals 222a that allow electrical connection with an external lighting fixture, and the base portion 22b has two pins that allow electrical connection with an external lighting fixture. Pin terminal 222b is provided.

  Here, the total length variable mechanism of the second cylindrical main body portion 21b is based on the first slide cylinder 23 connected to cover the upper right end portion of the first cylindrical main body portion 21a and the outer diameter of the first slide cylinder 23. And a second slide cylinder 24 which has a large inner diameter and is slidably fitted along the tube axis.

  Moreover, about the restoring mechanism between the 1st cylindrical main-body part 21a and the nozzle | cap | die part 22a, and the full length variable mechanism of the 2nd cylindrical main-body part 21b, it is the same as the content described by description of the straight tube | pipe type LED lamp 10 mentioned above. Therefore, detailed description is omitted.

  Incidentally, FIG. 8 is a diagram showing a state when the interval between the base portion 22a and the base portion 22b is set to the maximum interval.

  The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. The technical scope disclosed in different embodiments, respectively. Modifications of the embodiment obtained by appropriately combining the means are also included in the technical scope of the present invention.

  For example, the shape of the first cylindrical main body portion and the second cylindrical main body portion constituting the cylindrical main body portion may be a shape having a hollow portion in which the LED mounting substrate can be mounted inside, and an orthogonal cross section in the tube axis direction. The shape may be a circle, ellipse, rectangle, polygon, or any other shape.

  Further, the cylindrical main body is not limited at all with respect to the material, and may be an integrally molded product or a composite product composed of a plurality of materials and members.

  In addition, as for the form of the pair of base parts, a base corresponding to the G13 standard having two pin terminals used in the existing straight tube fluorescent lamp may be used, or the Japan Electric Bulb Industry Association Standard JEL801 “New Type Base”. A base corresponding to the “straight tube type LED lamp system” (established on Oct. 8, 2010) or any other base may be used.

  The full length variable mechanism is not limited to the two-stage full length variable mechanism of the maximum length and the minimum length as in the two embodiments described above, and the multi-stage interval between the pair of base portions is arbitrarily set to a plurality of predetermined intervals. Any variable length mechanism can be used.

  In other words, in addition to the two-stage variable mechanism of the maximum length and the minimum length as required, it may be designed to be variable to a plurality of intermediate lengths of three or more stages as necessary.

  Further, the full length variable mechanism may have a multi-stage configuration with three or more slide cylinders, including the one configured with two slide cylinders as in the above-described embodiment.

  Furthermore, the full length variable mechanism may be provided only in the second cylindrical main body, or in addition, another full length variable mechanism may be provided in the first cylindrical main body.

  On the other hand, the above-described restoration mechanism has been described in the case where it is provided only in either the first cylindrical main body part or the second cylindrical main body part, but a similar mechanism may be provided in either of them. Instead of being interposed between the base part and the base part, it may be provided in the middle part of the main body of the first cylindrical main body part or the second cylindrical main body part.

  Moreover, although the case where the restoring force by the elastic deformation of a coil spring was utilized was illustrated about the restoring mechanism, other mechanisms may be used.

  For example, the restoring force due to elastic deformation of the leaf spring, the property of returning to the original volume before compression when the volume is reduced by compressing fluid such as air, that is, compressibility, and further using an electric motor such as a motor. May be.

  In the form in which the guide convex portion is formed on the first slide cylinder, the guide convex portion only needs to protrude outward from the first slide cylinder. Specifically, the guide convex portion is fitted into a guide concave portion formed in the second slide cylinder so that the first slide cylinder and the second slide cylinder are slidably engaged. If the protruding direction of the portion intersects the tube axis direction, the protruding direction of the guide convex portion does not necessarily have to be orthogonal to the tube axis direction. In the form in which the locking convex portion is formed on the first slide cylinder, the locking convex portion only has to protrude outward from the first slide cylinder. Specifically, due to the outward displacement of the locking convex portion, the locking convex portion cooperates with the unlocking claw portion formed on the second slide cylinder, and the second slide cylinder is moved to the first slide. If the protruding direction of the locking convex part intersects the tube axis direction so that the position restriction is released by pressing the locking convex part by the unlocking claw part while restricting the position with respect to the cylinder The protruding direction of the locking convex portion does not necessarily have to be orthogonal to the tube axis direction.

  As described above, according to the LED lamp according to the present invention, even when it is mounted on an existing lighting apparatus for a straight tube fluorescent lamp having a different type, the total length can be easily adjusted according to the various types. In addition to being variable, the LED lamp is useful as an LED lamp that can sufficiently ensure ease of attachment and detachment and can sufficiently ensure the function of preventing the attachment after the attachment.

DESCRIPTION OF SYMBOLS 10 Straight tube | pipe type LED lamp 11 Cylindrical main-body part 11a 1st cylindrical main-body part 111a Circuit board 112a LED
11b 2nd cylindrical main-body parts 12a, 12b Base parts 122a, 122b Pin terminal 13 1st slide cylinder 13a Guide convex part 13b Locking convex part 13c Contact preventing concave part 14 Second slide cylinders 14a, 14b Unlocking claw part 14c Guide recess 14d Locking projection 15 Coil spring 20 Straight tube LED lamp 21 Cylindrical main body 21a First cylindrical main body 21b Second cylindrical main body 22a, 22b Base 23 First slide cylinder 24 First 2 Slide cylinder 121b A pair of latching claws 222a, 222b Pin terminal P Point TA indicating the position of the tube axis Double-dotted arrow indicating the direction of the tube axis

Claims (3)

A cylindrical main body portion in which a plurality of LEDs are mounted inside along the tube axis direction, and an LED lamp provided with a pair of base portions at both ends in the tube axis direction of the cylindrical main body portion,
The cylindrical main body includes a first cylindrical main body in which the plurality of LEDs are mounted and one of the pair of bases is connected to one end and the first cylindrical main body. A second cylindrical main body connected to the other end of the main body, and having a total length variable mechanism capable of changing the interval between the pair of caps to a plurality of predetermined intervals;
At least one of the first cylindrical main body and the second cylindrical main body has a restoring mechanism,
In the restoration mechanism, even when the interval between the pair of base portions is set to any predetermined interval among the plurality of predetermined intervals, the interval between the pair of base portions is reduced from the set predetermined interval. When the interval between the pair of cap parts is restored to the set predetermined interval ,
The variable length mechanism of the second cylindrical main body includes a first slide cylinder connected to the first cylindrical main body and a second slide connected to the other base of the pair of bases. Tube and
The first slide tube is formed with a guide protrusion that protrudes outward of the first slide tube,
In the second slide cylinder, a guide recess is formed linearly along the tube axis direction on the inner surface of the second slide cylinder,
The first slide cylinder and the second slide cylinder are slidably engaged with each other in a predetermined range along the tube axis direction by fitting the guide convex portion into the guide concave portion,
A part of the first slide cylinder of the second cylindrical main body portion is fitted and slidable along the tube axis direction on the inner peripheral side of the second slide cylinder,
A plurality of unlocking claws are formed along the tube axis direction in the second slide cylinder,
The first slide tube is formed with a locking projection that protrudes outward of the first slide tube,
When the interval between the pair of base portions is set to any one of the plurality of predetermined intervals, the locking convex portion of the first slide cylinder is one of the second slide cylinders. The second slide cylinder is regulated in the pipe axis direction with respect to the first slide cylinder by being displaced outwardly orthogonal to the pipe axis direction so as to face the unlocking claw.
When the interval between the pair of bases is set to another predetermined interval, the lock-release claw portion of the second slide cylinder is pressed inward, so that the lock convex portion moves outward. The position restriction in the tube axis direction is canceled by the displacement of
An LED lamp characterized by that. The second slide cylinder is formed with at least a pair of unlocking claws in a cross section orthogonal to the tube axis direction, and the pair of unlocking claws is substantially pointed with respect to the point where the tube axis is located. 2. The LED lamp according to claim 1 , wherein the LED lamp is symmetrically positioned. The LED lamp according to claim 1 or 2 , wherein the restoring mechanism is a spring stored in a hollow portion of the second slide cylinder.

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