JP3200935U - Cylindrical cover for straight tube type LED lighting device and straight tube type LED lighting device - Google Patents

Abstract

An object of the present invention is to prevent dripping of a resin-made cylindrical cover when a straight tube type LED lighting device is attached to a socket, and to trap heat generated from an LED element without using a material having high thermal conductivity. Provided are a cylindrical cover for a straight tube type LED lighting device and a straight tube type LED lighting device which are made difficult and can be easily assembled with a small number of parts. A transparent or translucent resin cylindrical cover used for a straight tube type LED lighting device is extended from a peripheral wall portion 11 having a circular cross section and two upper end portions 12 of the peripheral wall portion 11 to have a cross sectional shape. Each of the LED elements 6 near the peripheral wall portion of the extension portion 13. The extension portion 13 is an H-type and the LED substrate holding portion 15 protrudes inwardly from the two lower end portions 14 of the extension portion 13. A circular hole 16 is formed at a close location. [Selection] Figure 4

Description

  The present invention relates to a cylindrical cover for a straight tube type LED lighting device and a straight tube type LED lighting device using the cylindrical cover.

  Conventionally, as described in Patent Document 1 (Japanese Patent Laid-Open No. 2014-63616), a resin cylindrical body is used as a main body, an LED substrate is attached to the cylindrical body, and a terminal block and a base body are attached to the end of the cylindrical body. A straight tube type LED lighting device has been proposed in which the LED board and the base pin are electrically connected to supply power to the LED element.

In the straight tube type LED lighting device having such a structure, since the cylindrical body is made of resin, the strength is insufficient and the thermal conductivity is poor. Therefore, when the straight tube type LED lighting device is attached to the socket, the cylindrical body Therefore, it has been necessary to take measures to prevent the sag from being generated and to prevent the heat generated from the LED elements during light emission from being trapped.
For example, in the thing of patent document 1, the support base material which supports an LED board is used, and the support base material shall be bent to the steel plate with high heat conductivity and rigidity.
There have also been many proposals for the cylindrical body itself comprising a metal portion and a resin portion having high thermal conductivity and rigidity.

However, since the straight tube type LED lighting device of Patent Document 1 includes a support base material in addition to the cylindrical body, the LED substrate, the terminal block, and the base body, there is a problem that the number of parts increases and it takes time to assemble. Moreover, in the case where the cylindrical body is made of metal and resin, there is a problem that the configuration of the cylindrical body itself is complicated and the cost is increased.
In addition, the conventional cylindrical cover for all-plastic straight tube LED lighting devices can be reduced in weight and cost by not using a metal fuselage, but it has low strength and poor heat dissipation. There is a problem that the twist and the lifetime of the LED element are reduced.

JP 2014-63616 A

A first problem of the present invention is to prevent dripping from occurring in a resin-made cylindrical body when a straight tube type LED lighting device is attached to a socket.
Moreover, the 2nd subject of this invention is making it hard to trap the heat which generate | occur | produces from an LED element etc., without utilizing a material with high heat conductivity.
Furthermore, a third problem of the present invention is to make it possible to easily assemble a straight tube type LED lighting device with a small number of parts.

  A cylindrical cover for a straight tube type LED lighting device according to claim 1 is a transparent or translucent resin cylindrical cover used for a straight tube type LED lighting device, and a peripheral wall having a circular or circular cross section. And the center line of the cylindrical cover from two upper end portions extending in the longitudinal direction of the peripheral wall portion having a circular cross section or two parallel lines extending in the longitudinal direction of the peripheral wall portion having a circular cross sectional shape And an LED board holding portion that protrudes inward from two lower end portions extending in the longitudinal direction of the extension portion, and an extension portion having an H-shaped cross-section extending in the direction. And

  The cylindrical cover for a straight tube type LED lighting device according to claim 2 is the cylindrical cover for a straight tube type LED lighting device according to claim 1, wherein the cylindrical cover is a longitudinal direction of the extending portion. It further has one or a plurality of reinforcing portions that respectively reach the peripheral wall portion from the two lower end portions extending in the direction.

  A cylindrical cover for a straight tube type LED lighting device according to a third aspect of the present invention is the cylindrical cover for a straight tube type LED lighting device according to claim 1, wherein the cross-sectional shape is an upper end portion of a peripheral wall portion having an arc. A plurality of holes are formed near the peripheral wall portion of the extending extension portion, or near the peripheral wall portion of the extending portion extending from two parallel lines extending in the longitudinal direction of the peripheral wall portion having a circular cross-sectional shape. A plurality of vent holes are formed, and a plurality of vent holes are formed inside the two parallel lines of the peripheral wall portion having a circular cross-sectional shape.

  A straight tube type LED lighting device according to a fourth aspect of the present invention is the cylindrical cover for a straight tube type LED lighting device according to the third aspect, wherein the cylindrical cover extends in the longitudinal direction of the extending portion. It further has one or a plurality of reinforcing portions that respectively reach the peripheral wall portion from the two lower end portions, and a plurality of openings are formed in the reinforcing portions.

  A straight tube type LED lighting device according to a fifth aspect of the present invention is a straight tube type LED lighting device cylindrical cover according to any one of claims 1 to 4, an elongated rectangular LED substrate, and a feeder line connection. And a connector part connected to the end part of the cylindrical cover, and a connector part connected to the base pin and the LED substrate.

  A straight tube type LED lighting device according to a sixth aspect of the present invention is characterized in that, in the straight tube type LED lighting device according to the fifth aspect, an air inlet is formed in a lower portion of the base part.

  According to the first aspect of the present invention, the transparent or translucent resin-made straight tube type LED lighting device cylindrical cover (hereinafter referred to as “cylindrical cover”) includes a peripheral wall portion having a circular or circular cross-sectional shape. , Extending from the two upper ends extending in the longitudinal direction of the peripheral wall portion having a circular cross section or from two parallel lines extending in the longitudinal direction of the peripheral wall portion having a circular cross sectional shape in the direction of the center line of the cylindrical cover It has an LED board holding part that protrudes inward from the two lower ends that extend in the longitudinal direction of the extension part, and the cross-sectional shape is H type. The extension part is effective for raising the strength against drooping and twisting, so that when the straight tube type LED lighting device is attached to the socket, the cylindrical cover is made of resin, although it is made of resin. Prevent dripping without using a metal support substrate It is possible.

  According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, the cylindrical cover is provided with one or a plurality of parts that respectively reach the peripheral wall part from two lower end parts extending in the longitudinal direction of the extension part. Further, the strength of the cylindrical cover can be further increased.

According to the device of claim 3, in addition to the effect of the device of claim 1, a plurality of holes are formed near the peripheral wall portion of the extending portion extending from the upper end portion of the peripheral wall portion having a circular cross section. Alternatively, a plurality of holes are formed near the peripheral wall portion of the extending portion extending from two parallel lines extending in the longitudinal direction of the peripheral wall portion having a circular cross-sectional shape and the peripheral wall portion 2 having a circular cross-sectional shape is formed. Since a plurality of vents are formed inside the parallel lines of the book, it is possible to make it difficult for the heat generated from the LED elements or the like to be trapped inside the cylindrical cover without using a material having high thermal conductivity.
In addition, the H-shaped extending portion of the cross-sectional shape is not only effective for increasing the strength against drooping and twisting, but also has the effect of expanding the heat radiation area, and by forming a plurality of holes Since heat dissipation can be improved, dripping and twisting due to thermal deformation can be prevented while the life of the LED element can be prevented while being a resin-made cylindrical cover.
In addition, since the several hole formed near the surrounding wall part of the extension part is drilled horizontally, dust etc. do not accumulate and clog.

  According to the invention according to claim 4, in addition to the effect of the invention according to claim 1, the cylindrical cover is provided with one or a plurality of parts that respectively reach the peripheral wall part from two lower end parts extending in the longitudinal direction of the extension part. Since the reinforcement part has a plurality of openings, the strength of the cylindrical cover is further increased, and it is generated from the LED element etc. without using a material with high thermal conductivity It is possible to make it difficult for the heat to be trapped inside the cylindrical cover.

  According to the invention concerning Claim 5, the straight tube | pipe type LED lighting apparatus which has an effect by the idea concerning any one of Claim 1 thru | or 4 can be obtained.

  According to the sixth aspect of the invention, in addition to the effect of the fifth aspect of the invention, since the air inlet is formed in the lower part of the base part, the heat generated from the LED element or the like is further generated inside the cylindrical cover. It can be made harder to stay.

1 is an exploded perspective view of a straight tube type LED lighting device of Embodiment 1. FIG. The enlarged view of the A section of FIG. The enlarged view of the B section of FIG. 1 is a cross-sectional view of a cylindrical cover 1 of Example 1. FIG. Sectional drawing of the cylindrical cover 21 of Example 2. FIG. Sectional drawing of the cylindrical cover 31 of Example 3. FIG.

  Hereinafter, embodiments of the present invention will be described by way of examples.

FIG. 1 is an exploded perspective view of the straight tube type LED lighting device of the first embodiment, FIG. 2 is an enlarged view of a portion A of FIG. 1, FIG. 3 is an enlarged view of a portion B of FIG. A sectional view of the cover 1 is shown in FIG.
In the following description, the left side of the drawing is described as one end side, and the right side is described as the other end side.

As shown in FIG. 1, the straight tube type LED lighting device of Example 1 includes a cylindrical cover 1, one end side cap portion 2 having a dummy cap pin 7, and the other end side cap portion 3 having a cap pin 8, It consists of a connector 4, an elongated rectangular LED substrate 5, and a plurality of LED elements 6 mounted on one side of the LED substrate 5.
The straight tube type LED lighting device 1 according to the first embodiment has a cylindrical shape that is almost the same size as a conventional straight tube type fluorescent lamp, and an LED substrate 5 is fixed inside the cylindrical cover 1 to form a cylindrical cover. One end side cap part 2 is fitted and fixed to one end side of 1, the other end side base part 3 is fitted and fixed to the other end side of the cylindrical cover 1, and the LED substrate 5 and the base pin 8 are connected by the connector 4. And is assembled by electrically connecting.

The cylindrical cover 1 of Example 1 is made of a transparent or translucent resin and is integrally molded.
As shown in FIGS. 2 and 4, the cylindrical cover 1 extends in the center line direction from the peripheral wall portion 11 having a circular cross-sectional shape and the two upper end portions 12 extending in the longitudinal direction of the peripheral wall portion 11. It has the extension part 13 whose cross-sectional shape is H type, and the LED board holding | maintenance part 15 which protrudes inward from the two lower end parts 14 extended in the longitudinal direction of the extension part 13. As shown in FIG.
In addition, a circular hole 16 is formed at a location near each LED element 6 near the peripheral wall portion of the extending portion 13, and air heated by heat generated from the LED element 6 and the like escapes from the cylindrical cover 1. It is supposed to be.
Further, rectangular holes 17 for fixing the one end side cap portion 2 and the other end side cap portion 3 are formed in the vicinity of both end portions of the extending portion 13.

The one end side cap part 2 in the straight tube type LED lighting device of the first embodiment is cylindrical as shown in FIG. 1, two dummy base pins 7 on one end side, two air inlets 9 on the lower side, and the other end side. There is an engaging portion (not shown) for fixing at the top of the.
In FIG. 1, the side with the air inlet 9 is drawn on the upper side. However, when the straight tube LED lighting device is actually attached to the socket, the side with the air inlet 9 is on the lower side.

The other end side cap portion 3 in the straight tube type LED lighting device of the first embodiment is cylindrical as shown in FIGS. 1 and 3, and has two cap pins 8 on the other end side and two air introduction ports 9 on the lower portion. In addition, an engaging portion 10 for fixing is provided at an upper portion on one end side, and a connector holding portion 30 for holding the connector 4 on an inner wall surface on one end side.
Moreover, the connector 4 in the straight tube type LED lighting apparatus of Example 1 is flat form as shown in FIG.1 and FIG.3, the terminal board 40 for electrically connecting with the LED board 5 at one end side, and the other end The terminal pin 41 for electrically connecting with the two cap pins 8 is provided on the side.
Furthermore, the LED board 5 in the straight tube type LED lighting device of the first embodiment has an elongated rectangular shape as shown in FIG. 3, and a terminal plate is inserted into the lower side of the other end portion for electrical connection with the terminal plate 40. Part 50.
In FIG. 3, the side with the air inlet 9 and the terminal board insertion portion 50 is drawn up, and the side with the engagement portion 10 is drawn down. However, the straight tube type LED lighting device is actually attached to the socket. When used, the side with the air inlet 9 and the terminal board insertion portion 50 is on the bottom, and the side with the engagement portion 10 is on the top.

The straight tube type LED lighting device of Example 1 is assembled according to the following procedure.
(1) One end portion of the LED substrate 5 is inserted from the other end side of the extending portion 13 to one end side and is held by the LED substrate holding portion 15.
Although not shown, an LED board stopper is provided near one end side of the extending part 13 (near the other end side of the rectangular hole 17), and one end part of the LED board 5 is used as the LED board stopper. When it hits, the LED board 5 cannot be inserted any more.
(2) The connector 4 is inserted into the connector holding portion 30 from one end side of the other end side cap portion 3 and the terminal pin 41 is inserted from one end side of the cap pin 8 to electrically connect the connector 4 and the cap pin 8. .
(3) One end side of the other end side cap part 3 is inserted from the other end side of the cylindrical cover 1, and the terminal plate 40 is inserted from the other end side of the terminal plate insertion part 50 to electrically connect the connector 4 and the LED substrate 5. The other end side base part 3 is fixed to the cylindrical cover 1 by engaging the engaging part 10 of the other end side base part 3 with the other end side of the rectangular hole 17.
(4) The other end side of the one end side cap part 2 is inserted from one end side of the cylindrical cover 1, the engaging part of the one end side cap part 2 is hooked on one end side of the rectangular hole 17, and the one end side cap part 2 is Secure to the cylindrical cover 1.

As can be seen from the above assembling procedure, when assembling the straight tube type LED lighting device of the first embodiment, it is not necessary to use any fixing tool such as a screw or a nail, so that the assembling work can be performed quickly without any mistake.
Further, since the dummy base pin 7 and the base pin 8 have the same structure as the base pin of a conventional straight tube fluorescent lamp, the straight tube type LED lighting device of the present invention has a conventional straight tube type fluorescent lamp. It can be used by attaching it to a lamp.

FIG. 5 shows a cross-sectional view of the cylindrical cover in the straight tube type LED lighting device of the second embodiment.
The straight tube type LED lighting apparatus of the second embodiment is different only in the structure of the cylindrical cover, and the other configurations are exactly the same as those of the straight tube type LED lighting apparatus of the first embodiment. The description of the other end side cap part 3, the connector 4, and the LED substrate 5 and their assembly procedures are omitted, and the same numbers as those in the first embodiment are used for portions that are not different from the first embodiment.

The cylindrical cover of Example 2 is made of a transparent or translucent resin and is integrally formed in the same manner as the cylindrical cover 1 of Example 1.
And as shown in FIG. 5, the cross-sectional shape extends in the center line direction of the cylindrical cover from the peripheral wall portion 21 having a circular cross-sectional shape and two parallel lines 22 extending in the longitudinal direction of the peripheral wall portion 21. The LED board holding part 25 projecting inward from the two lower end parts 24 extending in the longitudinal direction of the extension part 23, and the two lower end parts 24 extending horizontally in the horizontal direction. It has the reinforcement part 27 which reaches a surrounding wall part.
Since the cylindrical cover of Example 2 improves the strength of the upper portion of the cylindrical cover than the cylindrical cover 1 of Example 1 by the above structure, when the straight tube type LED lighting device of Example 2 is attached to the socket, The sag generated in the cylindrical cover can be made smaller.

FIG. 6 shows a cross-sectional view of the cylindrical cover in the straight tube type LED lighting device of the third embodiment.
The straight tube type LED lighting apparatus of the third embodiment is different only in the structure of the cylindrical cover, and the other configurations are exactly the same as those of the straight tube type LED lighting apparatus of the first embodiment. The description of the other end side cap part 3, the connector 4, and the LED substrate 5 and their assembly procedures are omitted, and the same numbers as those in the first embodiment are used for portions that are not different from the first embodiment.

The cylindrical cover of Example 3 is integrally formed of a transparent or translucent resin, like the cylindrical cover 1 of Example 1.
And as shown in FIG. 6, it extends in the centerline direction of a cylindrical cover from the surrounding wall part 31 whose cross-sectional shape is circular, and the two parallel lines 32 extended in the longitudinal direction of the peripheral wall part 31, and cross-sectional shape is H type. And an LED board holding portion 35 protruding inward from two lower end portions 34 extending in the longitudinal direction of the extending portion 33.
Further, a location near each LED element 6 near the peripheral wall portion of the extending portion 33, a location near each LED element 6 in the central portion of the extending portion 33, and the inside of the two parallel lines 32 above the peripheral wall portion 31. A circular hole 36 is formed so that the air heated by the heat generated from the LED element 6 and the like can escape from the cylindrical cover.
Since the cylindrical cover of Example 2 improves the strength of the upper part of the cylindrical cover than the cylindrical cover 1 of Example 1 by the above structure, when the straight tube type LED lighting device of Example 3 is attached to the socket, The sag generated in the cylindrical cover can be further reduced, and the hole 36 is formed in the central portion of the extending portion 33, so that the heat generated from the LED element 6 and the like can be made less likely to be trapped.

The modification of Examples 1-3 is listed.
(1) In Example 1, the circular hole 16 is formed in the location close | similar to each LED element 6 near the surrounding wall part of the extension part 13, and in Example 3, each LED element near the surrounding wall part of the extension part 33 is formed. A circular hole 36 is formed in a location near 6, a location near each LED element 6 in the center of the extension portion 33, and two parallel lines 32 above the peripheral wall portion 31. Is not limited to the location close to each LED element 6, and may be formed anywhere, and the forming direction may be either a vertical direction or an oblique direction with respect to the forming member.
Further, the shapes of the holes 16 and 36 may be any shape such as an ellipse or a polygon.
(2) The cylindrical covers of Examples 1 and 3 were provided with holes 16 and 36, and the one end side cap part 2 and the other end side base part 3 of Examples 1 to 3 were provided with air inlets 9. The LED board 5 may be sealed inside the straight tube type LED lighting device without providing the holes 16 and 36 and the air inlet 9.

(3) The reinforcing portion 27 of the second embodiment extends horizontally outward from the two lower end portions 24, but instead of or in addition to the reinforcing portion 27, the reinforcing portion extends obliquely downward. May be provided.
(4) The cylindrical cover of Examples 1 and 3 was not provided with a reinforcing part, but it may be provided with one or a plurality of reinforcing parts as in Example 2 or Modification (3).
However, if a reinforcing part continuous in the longitudinal direction is provided, the meaning of forming the holes 16 and 36 is lost. Therefore, the reinforcing part is provided intermittently in the longitudinal direction, or the reinforcing part continuous in the longitudinal direction. It is necessary to form a hole in some places.

(5) Although no special surface treatment is applied to the inner surface of the cylindrical cover of Examples 1 to 3, in Examples 1 and 3, the inner surface of the upper part of the cylindrical cover and the inner surfaces of the extending portions 13 and 33 are provided. If surface treatment is performed and the reflectance is increased by performing surface treatment on the lower surface of the reinforcing portion in the second embodiment and the modifications (3) and (4), light from the LED element 6 can be efficiently guided downward. it can.
Examples of the surface treatment include coating, plating treatment, and reflection material sticking.
(6) The assembly of the straight tube type LED lighting devices of Examples 1 to 3 is performed in the order of procedure (1) to procedure (4), but the order of procedure (1) and procedure (2) may be changed. The procedure (4) may be performed before any one of the procedures (1) to (3).
(7) In the straight tube type LED lighting devices of Examples 1 to 3, power is supplied from the base pin 8 of the other end side base part 3 to the LED element 6, and the dummy base pin 7 is provided to the one end side base part 2. However, power may be supplied to the LED element 6 from both ends.
In such a case, it is necessary to provide at least one cap pin for power feeding also on the one end side cap portion 2 so that the cap pin and the LED substrate 5 can be electrically connected.

DESCRIPTION OF SYMBOLS 1 Cylindrical cover 2 One end side base part 3 Other end side base part 4 Connector 5 LED board 6 LED element 7 Dummy base pin 8 Base pin 9 Air inlet 10 Engagement part 11 Peripheral wall part 12 Two upper end parts 13 Extension Part 14 Two lower end parts 15 LED board holding part 16 Hole 17 Rectangular hole 21, 31 Perimeter wall part 22, 32 Two parallel lines 23, 33 Extension part 24, 34 Two lower end parts 25, 35 LED board Holding part 27 Reinforcing part 30 Connector holding part 36 Hole 40 Terminal board 41 Terminal pin 50 Terminal board insertion part

Claims (6)

A transparent or translucent resin cylindrical cover used for a straight tube type LED lighting device,
A peripheral wall having a circular or circular cross-sectional shape;
It extends in the direction of the center line of the cylindrical cover from two upper end portions extending in the longitudinal direction of the peripheral wall portion having a circular cross section or from two parallel lines extending in the longitudinal direction of the peripheral wall portion having a circular cross sectional shape. An extending portion having an H-shaped protruding cross-sectional shape;
A cylindrical cover for a straight tube type LED lighting device, comprising an LED substrate holding portion that protrudes inward from two lower end portions extending in the longitudinal direction of the extending portion. The cylindrical cover further includes one or a plurality of reinforcing portions that respectively reach a peripheral wall portion from two lower end portions extending in a longitudinal direction of the extending portion. Cylindrical cover for straight tube type LED lighting device. A plurality of holes are formed near the peripheral wall portion of the extending portion extending from the upper end portion of the peripheral wall portion whose cross-sectional shape is an arc, or two parallel lines extending in the longitudinal direction of the peripheral wall portion having a circular cross-sectional shape. A plurality of holes are formed near the peripheral wall portion of the extending portion extending from the line, and a plurality of vent holes are formed inside the two parallel lines of the peripheral wall portion having a circular cross-sectional shape. The cylindrical cover for a straight tube type LED lighting device according to claim 1. The cylindrical cover further includes one or a plurality of reinforcing portions that respectively reach the peripheral wall portion from two lower end portions extending in the longitudinal direction of the extending portion,
The cylindrical cover for a straight tube type LED lighting device according to claim 3, wherein a plurality of openings are formed in the reinforcing portion. A cylindrical cover for a straight tube type LED lighting device according to any one of claims 1 to 4,
An elongated rectangular LED substrate;
A base portion having a base pin for connecting a power supply line and attached to an end portion of the cylindrical cover;
A straight tube type LED lighting device comprising: a connector portion connected to the base pin and the LED substrate. The straight tube type LED lighting device according to claim 5, wherein an air inlet is formed in a lower portion of the base part.