CN115315593A - Lighting device - Google Patents

Abstract

The lighting device is provided with: an elongated lamp unit; and an elongated housing that houses the lamp unit. The housing includes a glass tube, end members provided at both ends of the glass tube, respectively, and a plurality of shafts connecting the pair of end members. One of the pair of end members is provided with a cover member for opening and closing the housing. At least a part of the plurality of shafts is disposed inside the glass tube. The lighting device is configured such that when the lamp unit is inserted into and removed from the housing in a state where the housing is open, the lamp unit is guided by the shaft in the glass tube.

Description

lighting device

technical field

The invention relates to a lighting device.

Background technique

Conventionally, an explosion-proof lighting device is known (for example, refer to Patent Document 1).

Such a lighting device includes an elongated lamp unit and an elongated housing for accommodating the lamp unit. The housing includes a glass tube and end members respectively provided at both ends of the glass tube. A cover member for opening and closing the case is provided on one of the pair of end members. Furthermore, when replacing the lamp of the lamp unit, the lamp unit is inserted into and removed from the case with the cover member removed.

prior art literature

patent documents

Patent Document 1: Japanese Utility Model Publication No. 64-44525

Contents of the invention

The problem to be solved by the invention

Here, when the lamp unit is inserted into and removed from the housing, if the lamp unit comes into contact with the glass tube, the glass tube may be damaged.

The present invention was made to solve the above problems, and an object of the present invention is to provide a lighting device capable of suppressing damage to a glass tube.

means of solving problems

The lighting device of the present invention includes: a long lamp unit; and a long housing for accommodating the lamp unit. The housing includes a glass tube, end members respectively provided at both ends of the glass tube, and a plurality of shafts connecting the pair of end members. A cover member for opening and closing the case is provided on one of the pair of end members. At least some of the plurality of shafts are arranged inside the glass tube. The lighting device is configured such that the lamp unit is guided by the shaft inside the glass tube when the lamp unit is inserted into and removed from the case with the case opened.

With such a configuration, since the lamp unit can be prevented from coming into contact with the glass tube by guiding the lamp unit, damage to the glass tube can be suppressed.

In the lighting device described above, the lamp unit may include: a mounting plate for detachably attaching a straight tube type lamp; The lamp is provided with a slide engagement portion on the other surface, and the slide engagement portion is configured as a shaft that is slidably engaged with the inside of the glass tube.

In the above-mentioned lighting device in which the lamp unit includes a sliding engaging portion, four shafts may be provided on the housing, two shafts may be arranged inside the glass tube, and two shafts may be arranged outside the glass tube, and the sliding latch may The joint portion is configured to slidably engage with two shafts in the glass tube.

In the lighting device provided with the above-mentioned four shafts, it is also possible that the four shafts are arranged so that the four sides formed by connecting the arrangement positions with straight lines form an isosceles trapezoid, and the center of gravity of the isosceles trapezoid and the center of gravity of the glass tube may be arranged. The center is consistent.

Invention effect

According to the lighting device of the present invention, damage to the glass tube can be suppressed.

Description of drawings

FIG. 1 is a perspective view showing a lighting device according to the present embodiment.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

Fig. 3 is a perspective view showing a state in which a lamp unit is inserted and removed from a housing in the lighting device of Fig. 1 .

Fig. 4 is a view of one end member of the lighting device of Fig. 1 viewed from the inside.

Fig. 5 is a view of the other end member of the lighting device of Fig. 1 viewed from the inside.

Fig. 6 is an enlarged perspective view showing the other end of the lamp unit of the lighting device of Fig. 1 .

Detailed ways

One embodiment of the present invention will be described below.

First, a lighting device 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6 .

The lighting device 100 is an explosion-proof type, and is used in dangerous places such as factories, for example. As shown in FIG. 1 , this lighting device 100 includes a long lamp unit 1 and a housing 2 . The lighting device 100 is configured so that the LED lamp 11 of the lamp unit 1 can be replaced. Specifically, as shown in FIG. 3 , the case 2 is provided with a cover member 222 , and the lamp unit 1 can be inserted and removed from the case 2 with the cover member 222 removed.

The lamp unit 1 is housed in a case 2 and is configured to be able to light a straight tube type LED lamp 11 . The lamp unit 1 includes a mounting plate 12 on which the LED lamp 11 is detachably mounted and a sliding engagement portion 13 disposed on the mounting plate 12 . In addition, the LED lamp 11 is an example of the "lamp" of this invention.

The mounting plate 12 is provided with sockets 123 at both end portions in the longitudinal direction, and the sockets 123 are disposed on one surface side (Z2 direction side) so as to face each other. In the present embodiment, two sets of a pair of sockets 123 are provided so as to be adjacent in the lateral direction (Y direction). That is, the mounting plate 12 is configured so that two LED lamps 11 can be mounted on one side.

A mounting surface 121 is formed at one end portion (end portion on the X1 direction side) of the mounting plate 12 in the longitudinal direction, and a fitting surface 122 ( Refer to Figure 6). A slide engagement portion 13 is provided on the other surface (surface on the Z1 direction side) of the mounting plate 12 . It should be noted that the slide engagement portion 13 will be described later.

The housing 2 is formed in a hollow cylindrical shape, and is configured to accommodate the lamp unit 1 therein. As shown in FIG. 1 , the casing 2 includes a cylindrical glass tube 21, end members 22 and 23 respectively provided at both ends of the glass tube 21, and four wires connecting the pair of end members 22 and 23. Shafts 24 to 27 (see FIG. 2 ). In addition, the end member 22 is an example of "one of a pair of end members" of this invention, and the shafts 24 and 25 are an example of "at least a part of several shafts" of this invention.

The glass tube 21 is transparent and configured to transmit light emitted from the LED lamp 11 .

The end member 22 is arranged at one end (the end on the X1 direction side) of the glass tube 21 in the longitudinal direction, and is configured to close the one end. The end member 22 has a cylindrical body 221 and a cover member 222 detachably attached to the cylindrical body 221 . The cylindrical body 221 can attach and detach the cover member 222 at one end, and is assembled to the glass tube 21 at the other end. In the state where the cover member 222 is attached, the case 2 is sealed, and in the state where the cover member 222 is removed, one end portion of the case 2 in the longitudinal direction is opened. As shown in FIG. 4, the cylindrical body 221 has the support base 22a, the attachment part 22b, four internal thread parts 22c-22f, and 22 g of guide parts.

The support seat 22a is formed in an annular shape, and is configured to support one end portion of the glass tube 21 in the longitudinal direction. The mounting portion 22b (see FIG. 3 ) is formed to protrude inwardly (upper) from the lower end portion of the inner peripheral surface of the cylindrical body 221 , and is configured to be capable of mounting the mounting surface 121 of the lamp unit 1 .

The internally threaded portions 22c and 22d are respectively formed on protruding portions protruding inwardly (lower) from the vicinity of the upper end of the inner peripheral surface of the cylindrical body 221, and the internally threaded portions 22e and 22f are respectively formed on the outer peripheral surface of the cylindrical body 221. A protruding portion protruding outward (lower) near the lower end of the Therefore, the female thread parts 22c and 22d are arranged inside the support seat 22a, and the female thread parts 22e and 22f are arranged outside the support seat 22a. Furthermore, the four internally threaded parts 22c to 22f are provided so that the four sides formed by connecting the arrangement positions with a straight line form an isosceles trapezoid shape, and are arranged so that the center of gravity of the isosceles trapezoid coincides with the center of the support seat 22a. That is, the female thread parts 22c and 22d are arranged on the upper side (Z1 direction side) with respect to the female thread parts 22e and 22f, and the distance between the female thread parts 22c and 22d is shorter than the distance between the female thread parts 22e and 22f.

The guide portion 22g is provided to guide the end portion 12a (see FIG. 3 ) of the mounting plate 12 in the short side direction when the lamp unit 1 is inserted into and removed from the housing 2 . The guide part 22g is formed so as to protrude inward from the inner peripheral surface of the cylindrical body 221, and is arrange|positioned so that it may oppose the intermediate part in the height direction (Z1 and Z2 direction).

As shown in FIG. 1 , the end member 23 is arranged at the other end (the end on the X2 direction side) of the glass tube 21 in the longitudinal direction, and is configured to close the other end. The end member 23 is formed in a bottomed cylindrical shape, and the opening side is assembled to the glass tube 21 . As shown in FIG. 5, the end member 23 has the support seat 23a, the receiving part 23b, and four internal thread parts 23c-23f.

The support seat 23 a is formed in an annular shape, and is configured to support the other end portion of the glass tube 21 in the longitudinal direction. The support seat 23a is arranged at a position corresponding to the support seat 22a, and is provided on the cylindrical portion of the bottomed cylindrical end member 23. As shown in FIG. The receiving portion 23 b is provided to receive the fitting surface 122 of the lamp unit 1 , and is disposed on the bottom surface (end surface) of the bottomed cylindrical end member 23 . The receiving portion 23b has a pair of wall portions protruding inwardly (X1 direction side) from the bottom surface, the pair of wall portions are formed to extend in the lateral direction (Y direction), and the fitting surface 122 is sandwiched between the pair of wall portions. .

The internally threaded portions 23c and 23d are respectively formed on protrusions protruding inwardly (lower) from the vicinity of the upper end of the inner peripheral surface of the cylindrical portion, and the internally threaded portions 23e and 23f are respectively formed on the lower end of the outer peripheral surface of the cylindrical portion. A protruding part protruding outward (lower) near the part. Therefore, the female thread parts 23c and 23d are arranged inside the support seat 23a, and the female thread parts 23e and 23f are arranged outside the support seat 23a. Furthermore, the four internally threaded portions 23c to 23f are provided in an isosceles trapezoidal shape with four sides connecting the arrangement positions with a straight line, and are arranged so that the center of gravity of the isosceles trapezoid coincides with the center of the support seat 23a. That is, the female thread parts 23c and 23d are arranged on the upper side (Z1 direction side) with respect to the female thread parts 23e and 23f, and the distance between the female thread parts 23c and 23d is shorter than the distance between the female thread parts 23e and 23f. Therefore, the four internal thread parts 23c-23f are respectively arrange|positioned in the position corresponding to the four internal thread parts 22c-22f.

As shown in FIG. 2 , the cross-sectional shapes of the shafts 24 to 27 are circular, and external thread portions (not shown) are formed at both end portions. Also, one end portion of the shaft 24 is screwed to the internal thread portion 22 c of the end member 22 , and the other end portion of the shaft 24 is screwed to the internal thread portion 23 c of the end member 23 . One end of the shaft 25 is screwed with the internal thread portion 22 d of the end member 22 , and the other end of the shaft 25 is screwed with the internal thread portion 23 d of the end member 23 . One end of the shaft 26 is screwed to the internally threaded portion 22 e of the end member 22 , and the other end of the shaft 26 is screwed to the internally threaded portion 23 e of the end member 23 . One end portion of the shaft 27 is screwed to the internal thread portion 22 f of the end member 22 , and the other end portion of the shaft 27 is screwed to the internal thread portion 23 f of the end member 23 . Therefore, the end members 22 and 23 are connected by the shafts 24 to 27 , and the glass tube 21 is sandwiched between the end members 22 and 23 .

Furthermore, the shafts 24 and 25 are arranged inside the glass tube 21, and are arranged on the upper side (the side in the Z1 direction) inside the glass tube 21 . The shafts 26 and 27 are arranged outside the glass tube 21 and arranged on the lower side (Z2 direction side) of the case 2 . The shafts 26 and 27 are arranged outside the irradiation range of the LED lamp 11 . In addition, the four shafts 24 to 27 are provided so that the four sides formed by connecting the arrangement positions with straight lines form an isosceles trapezoid shape, and the center of gravity of the isosceles trapezoid coincides with the center of the glass tube 21 . The arrangement position refers to the arrangement position when viewed from the longitudinal direction of the housing 2 (the axial direction of the shafts 24 to 27 ). In the isosceles trapezoid formed by the four shafts 24-27, the straight line connecting the shafts 26 and 27 is the lower base, the straight line connecting the shafts 24 and 25 is the upper base, and the straight line connecting the shafts 24 and 26 and the connecting shafts 25 and 27 The straight line is the waist.

In addition, as shown in FIG. 1 , an attachment piece 223 is provided on an upper end portion of the end member 22 , and an attachment piece 231 is provided on an upper end portion of the end member 23 . The mounting pieces 223 and 231 are provided for mounting the lighting device 100 on an installation object such as a ceiling. As a specific example, one surface 151a of the mounting bracket 151 is fixed to the installation object, and one blade 152a of the hinge 152 is fixed. Furthermore, the mounting piece 223 is detachably attached to the other surface 151 b of the mounting fitting 151 , and the mounting piece 231 is attached to the other blade 152 b of the hinge 152 .

Here, as shown in FIG. 6 , the slide engagement portion 13 of the lamp unit 1 is arranged at the other end portion (the end portion on the X2 direction side) of the mounting plate 12 in the longitudinal direction. The sliding engagement portion 13 is provided for moving the lamp unit 1 along the shafts 24 and 25 when the lamp unit 1 is inserted into and removed from the housing 2 . That is, the sliding engagement portion 13 is configured to be slidably engaged with the two shafts 24 and 25 inside the glass tube 21 .

The sliding engaging part 13 includes a mounting part 131 mounted on the mounting plate 12 and a pair of left and right retaining springs 132 and 133 extending from the mounting part 131 . The mounting portion 131 is mounted on the other surface (the surface on the Z1 direction side) of the mounting plate 12 . As shown in FIG. 2 , the holding springs 132 and 133 are configured to hold the shafts 24 and 25 from outside.

Specifically, the holding spring 132 has an arm portion 132 a extending to one side from the mounting portion 131 and an arc-shaped holding portion 132 b formed at the tip of the arm portion 132 a. The holding spring 132 is configured such that the arm portion 132 a is elastically deformable, and the holding portion 132 b holds the shaft 24 . The holding spring 133 has an arm portion 133 a extending to the other side from the mounting portion 131 and an arc-shaped holding portion 133 b formed at the tip of the arm portion 133 a. The holding spring 133 is configured such that the arm portion 133 a is elastically deformable, and the holding portion 133 b holds the shaft 25 .

In this way, when the sliding engagement portion 13 is engaged with the shafts 24 and 25 and the lamp unit 1 is suspended from the shafts 24 and 25 , the LED lamp 11 located below the sliding engagement portion 13 is separated from the glass tube 21 .

-Operation when replacing the LED lamp-

Next, the operation at the time of replacement of the LED lamp 11 in the lighting device 100 of the present embodiment will be described.

First, as shown in FIG. 1 , the mounting piece 223 of the end member 22 is detached from the other surface 151 b of the mounting metal fitting 151 . Then, when the housing 2 is rotated about the hinge 152 , the one end side (X1 direction side) of the housing 2 descends. Accordingly, even when a plurality of lighting devices 100 are installed in a row, the LED lamp 11 can be replaced while avoiding interference with adjacent lighting devices 100 .

Next, as shown in FIG. 3 , by detaching the cover member 222 of the end member 22 , one end portion (the end portion on the X1 direction side) of the case 2 is opened. Then, the mounting surface 121 of the lamp unit 1 is detached from the mounting portion 22 b of the end member 22 . Thereafter, one end portion (the end portion on the X1 direction side) of the lamp unit 1 is held, and the lamp unit 1 is pulled out from the case 2 to one side (the X1 direction side). At this time, the slide engagement portion 13 is engaged with the shafts 24 and 25 , and the other end portion (end portion on the X2 direction side) of the lamp unit 1 moves along the shafts 24 and 25 . That is, since the other end portion of the lamp unit 1 is guided by the shafts 24 and 25 , the lamp unit 1 hardly comes into contact with the glass tube 21 .

Next, when the other end of the lamp unit 1 reaches the one end of the case 2 , the engagement of the slide engagement portion 13 is released, and the lamp unit 1 is detached from the case 2 . Then, the LED lamp 11 is detached from the mounting plate 12 , and a new LED lamp 11 is mounted on the mounting plate 12 .

Next, the slide engagement portion 13 of the lamp unit 1 after lamp replacement is engaged with the shafts 24 and 25 . Then, the lamp unit 1 is inserted to the other side (X2 direction side) of the case 2. As shown in FIG. At this time, the other end portion of the lamp unit 1 moves along the shafts 24 and 25 . Moreover, the end part 12a of the mounting plate 12 is guided by the guide part 22g (refer FIG. 4). Therefore, it is difficult for the lamp unit 1 to come into contact with the glass tube 21 .

Next, the fitting surface 122 (see FIG. 6 ) of the mounting plate 12 is fitted to the receiving portion 23 b (see FIG. 5 ) of the end member 23 , and the mounting surface 121 of the mounting plate 12 is mounted to the mounting portion 22 b of the end member 22 . Thus, one end of the lamp unit 1 inside the housing 2 is supported by the end member 22 , and the other end is supported by the end member 23 . Thereafter, the casing 2 is sealed by attaching the cover member 222 to the cylindrical body 221 , and the attachment piece 223 of the end member 22 is attached to the other surface 151 b of the attachment fitting 151 .

-Effect-

In the present embodiment, as described above, the shafts 24 and 25 are disposed inside the glass tube 21, and the slide engagement portion 13 is provided on the lamp unit 1, so that when the lamp unit 1 is inserted and removed from the housing 2, the lamp Since the unit 1 is guided along the shafts 24 and 25 , the contact between the lamp unit 1 and the glass tube 21 can be suppressed, so that damage to the glass tube 21 can be suppressed. In addition, by making the shafts 24 and 25 among the shafts 24 to 27 connecting the end members 22 and 23 function as a guide rail, compared with the case of providing a dedicated guide rail (not shown), the increase in the number of parts can be suppressed. .

In addition, in this embodiment, since the sliding engagement portion 13 is engaged with the two shafts 24 and 25, the lamp unit 1 can be easily positioned relative to the housing, compared to the case where the sliding engagement portion is engaged with one shaft. 2 is stable.

-Other Embodiments-

In addition, the embodiment disclosed this time is an illustration in every respect, and does not serve as the basis of a limited interpretation. Therefore, the technical scope of the present invention is not interpreted only by the above-mentioned embodiments, but defined based on the description of technical claims. In addition, the technical scope of the present invention includes all changes within the meaning and range equivalent to the technical claims.

For example, in the above-mentioned embodiment, the example in which the lamp unit 1 is configured to be able to light the LED lamp 11 was shown, but it is not limited to this, and the lamp unit may be configured to be able to light other lamps.

In addition, in the above-mentioned embodiment, the example in which two LED lamps 11 can be attached and detached to the lamp unit 1 was shown, but it is not limited to this, and the number of LED lamps which can be attached and detached to the lamp unit may be any number.

In addition, in the above embodiment, an example in which four shafts 24 to 27 are provided in the housing 2 is shown, but the invention is not limited thereto, and the number of shafts provided in the housing may be any number as long as it is plural.

In addition, in the above-mentioned embodiment, the example in which the two shafts 24 and 25 are provided inside the glass tube 21 was shown, but it is not limited to this, and the number of shafts provided inside the glass tube may be any number.

In addition, in the above-mentioned embodiment, the example in which the two shafts 24 and 25 of the four shafts 24 to 27 are arranged inside the glass tube 21 is shown, but it is not limited to this, and all of the plurality of shafts may be arranged in the glass tube. inside of the tube.

In addition, in the above-mentioned embodiment, an example was shown in which the cross-sectional shape of the shafts 24 to 27 is circular, but the invention is not limited to this, and the cross-sectional shape of the shaft may be polygonal.

Industrial Applicability

The present invention can be applied to a lighting device including a long lamp unit and a long housing for accommodating the lamp unit.

Explanation of reference signs

1: light unit;

2: Shell;

11: LED light (light);

12: Mounting plate;

13: sliding engaging part;

21: glass tube;

22, 23: end member;

24～27: axis;

100: lighting device;

222: Cover member.

Claims (4)

1. A lighting device is characterized in that a lamp body is provided,

the lighting device is provided with:

an elongated lamp unit; and

an elongated housing accommodating the lamp unit,

the housing includes a glass tube, end members provided at both ends of the glass tube, respectively, and a plurality of shafts connecting the pair of end members,

a cover member for opening and closing the housing is provided on one of the pair of end members,

at least a portion of the plurality of shafts is disposed inside the glass tube,

the lighting device is configured such that, when the lamp unit is inserted into and removed from the housing in a state where the housing is open, the lamp unit is guided by a shaft in the glass tube.

2. The lighting device of claim 1,

the lamp unit includes: a mounting plate to which the straight tube type lamp is detachably mounted; and a slide engaging portion provided on the mounting plate,

the mounting plate has a surface on which the lamp can be mounted and a surface on which the slide engaging portion is provided,

the slide engagement portion is configured to be slidably engaged with a shaft in the glass tube.

3. The lighting device of claim 2,

four shafts are provided on the housing, two shafts are disposed inside the glass tube, two shafts are disposed outside the glass tube,

the slide engaging portion is configured to slidably engage with two shafts in the glass tube.

4. The lighting device of claim 3,

the four axes are arranged such that a quadrangle obtained by connecting the arrangement positions by straight lines becomes an isosceles trapezoid, and the center of gravity of the isosceles trapezoid coincides with the center of the glass tube.

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