JP2003308720A - Lamp coating device and lighting device - Google Patents

Abstract

(57) [Problem] To improve the workability of attaching and detaching a lamp covering device to and from a lamp. SOLUTION: Caps 33 are attached to both ends of a pipe 31 to constitute a lamp covering device 15. The cap 33 includes a cylindrical main body 35. The outer peripheral surface 35b of the main body 35 is brought into close contact with the inner surface of the pipe 31 in a planar manner. Inner peripheral surface 35a of main body 35
Then, an annular inner protruding portion 36 that linearly adheres to the arc tube 22 of the lamp FL is provided in a protruding manner. When attaching the lamp FL to the lamp covering device 15, the cap 33 can be hardly removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp coating device for covering a lamp and a lighting device having the lamp coating device.

[0002]

2. Description of the Related Art Conventionally, there has been known a structure in which, for example, a straight tube type fluorescent lamp is covered with a translucent pipe to keep heat and waterproof. Then, in such a configuration, in the configuration in which the fluorescent lamp is inserted inside the simple cylindrical pipe, there is a gap between the pipe and the fluorescent lamp, and the positions of these pipe and the fluorescent lamp are not fixed, and the pipe There is a problem in that the work of attaching and detaching the fluorescent lamp inserted into the lighting fixture to the lighting fixture becomes complicated.

In this respect, for example, as shown in WO00 / 68613, there is known a structure in which a tubular cap made of an elastic material is attached to both ends of the pipe to position the pipe and the fluorescent lamp. ing. In this configuration, the cap is fitted between the inner peripheral portion of the pipe and the outer peripheral portion of the base portion of the fluorescent lamp, and a part of the cap projects outward from the outer shape of the pipe.

[0004]

As described above, in the structure in which the cap is fitted to the base portion of the fluorescent lamp as described above, when the fluorescent lamp is inserted into the pipe to which the cap is previously attached,
There is a problem that the fluorescent lamp presses the cap and the cap comes off from a predetermined position. In addition, in order to improve waterproofness, a waterproof socket having a cylindrical cap portion may be used, but in a configuration in which the cap protrudes to the outer peripheral side of the pipe, the cap abuts to keep the fluorescent lamp in the waterproof socket. There is a problem that it may not be able to be attached to.

The present invention has been made in view of the above points, and an object of the present invention is to provide a lamp coating device which can be mounted on a lamp with good workability and a lighting device including the lamp coating device.

[0006]

According to a first aspect of the present invention, there is provided a lamp coating device, which has a translucent pipe for covering an arc tube of a lamp while separating the arc tube from the arc tube; and an outer peripheral surface portion closely contacting an inner peripheral surface of the pipe. And a cylindrical main body portion having an inner peripheral surface portion facing the outer peripheral portion of the lamp, and an outer peripheral surface portion on the outer peripheral portion of the arc tube of the lamp which is projected from the inner peripheral surface portion of the main body portion and has a diameter larger than that of the lamp cap The inner peripheral surface of the pipe and the inner protrusions that are in close contact with each other in an area smaller than that of the inner peripheral surface of the pipe, and caps that are attached to both ends of the pipe.

In this structure, since the inner projection of the cap, which projects from the inner peripheral surface of the main body, comes into contact with the outer peripheral portion of the arc tube whose diameter is larger than that of the base portion, friction between the cap and the lamp occurs. The friction resistance between the cap and the pipe becomes larger than the resistance, and the cap is less likely to be caught on the lamp, and it is possible to insert the lamp into the pipe while holding the cap at a predetermined position of the pipe,
The workability of attaching and detaching the lamp is improved.

For example, the lamp is a straight tube type fluorescent lamp, the pipe is made of a straight tubular cylindrical polycarbonate, and the cap is made of elastically deformable silicon. Moreover, the inner protrusion is formed, for example, in an annular shape that is continuous over the entire circumference in the circumferential direction.

The lamp coating apparatus according to a second aspect is the lamp coating apparatus according to the first aspect, wherein the cap is formed so as to be elastically deformable, and a part of the outer peripheral surface portion is recessed on the inner peripheral side. It is provided with an outer recess.

In this structure, since a space is formed in a part between the cap and the pipe, when the lamp comes into contact with the cap, the cap is easily deformed to reduce frictional resistance, The workability of attaching and detaching is improved.

An illumination device according to a third aspect of the present invention is a fixture main body having a pair of sockets; a lamp which is a straight tube type fluorescent lamp mounted between the sockets; and a lamp which covers the lamp. And a coating device.

In this structure, the first or second aspect is used.
Since the lamp covering device described above is provided, workability of attaching and detaching the lamp covering device to the lamp is improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a lamp coating device of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a lamp covering device according to an embodiment of the present invention in which a part of a lighting device is cut away and enlarged, and FIG. 3 is a side view in which a part of the lighting device is cut away, and FIG. 4 is a perspective view of the cap.

In the figure, reference numeral 11 is a lighting device, and this lighting device 11 comprises a fixture body 12 and a lamp FL and a lamp covering device 15 attached to the fixture body 12. The instrument body 12 is composed of a chassis 16 attached to an installed portion such as a ceiling surface, electric parts such as an inverter circuit and a base mounted in the chassis 16, and a pair of sockets attached to both ends of the chassis 16. 18 and. Further, these sockets 18 are waterproof lamp sockets having a function such as moistureproof or rainproof, that is, so-called waterproof sockets, and a socket body 19 fixed to the chassis 16,
A cylindrical cap portion 20 is attached to the socket body 19 by screwing, and a rubber packing and a slip ring sandwiched between the socket body 19 and the cap portion 20. The lamp FL is a general straight tube type fluorescent lamp having a diameter of 25 mm or 32 mm, and the arc tube 22 which is a straight tube glass tube and the arc tube 22
22 and metal cap portions 23 located at both ends. The cap 23 has a diameter slightly smaller than that of the arc tube 22, and a pair of cap pins 24 project from both ends.

The lamp coating device 15, which can also be called a fluorescent lamp coating device, is provided with a pipe 31 and a pair of caps 33 attached to both ends of the pipe 31. The pipe 31, which is also called a tube, is made of a translucent material, for example, transparent polycarbonate, and is formed into a cylindrical shape capable of housing the lamp FL inside. And the inner diameter of this pipe 31 is
The outer diameter of the arc tube 22, that is, the outer dimension of the arc tube 22 is larger. The cap 33 is also called a packing or a pipe cap, and is made of an elastically deformable material, for example, silicon, and is integrally formed as a whole including a cylindrical main body portion 35. And
From the inner peripheral surface portion 35a of the main body portion 35, from the vicinity of one end portion along the axial direction toward the inner peripheral side, the inner protrusion 36 having a semicircular cross section is continuous in the circumferential direction, that is, an annular shape over the entire circumference. It is projected. Further, the outer peripheral surface portion 35b of the main body portion 35 is recessed toward the inner peripheral side from one end portion along the axial direction to a plurality of locations intermittently in the circumferential direction, in the present embodiment, five locations. An outer recess 38 is formed. Also, each outer recess 38,
A position corresponding to the inner protruding portion 36, that is, disposed on the opposite side of the inner protruding portion 36 with respect to the thickness direction of the main body portion 35,
The main body part 35 is notched in a rectangular shape with an inclination toward the one end so as to become deeper. Further, the outer peripheral surface portion 35b
From the other end portion, toward the outer peripheral side, a locking projection 39 is provided so as to be continuous in the circumferential direction, that is, to form an annular shape over the entire circumference. Further, the projecting dimension of the locking projection 39 is equal to or smaller than the thickness dimension of the pipe 31.

The lamp coating device 15 is a pipe
The cap 33 is press-fitted inside both end portions of the pipe 31, the locking projection 39 is brought into contact with the end face of the pipe 31 for positioning, and the outer peripheral surface portion 35b is planarly adhered to the inside of the pipe 31. It

By inserting the lamp FL through any one of the openings of the lamp covering device 15 thus formed, the inner protrusions 36 of the caps 33 at both ends linearly contact the arc tube 22 to emit light. Pipe 31 at the same intervals as the entire circumference in pipe 22
The lamps FL and the lamp coating device 15 are combined in a state where they face each other.

Then, the lamp FL in which the lamp covering device 15 is combined is installed in the socket main body of the socket 18 facing each other.
By installing between 19 and tightening the cap part 20,
The lamp FL and the lamp coating device 15 are attached to the fixture body 12.

In this state, the lamp FL is covered with the pipe 31 and the socket 18 in a substantially liquid-tight manner, so that the effect of waterproofing, that is, moisture-proofing and rain-proofing is achieved, and the outside air or the air of the air conditioning does not directly hit the lamp FL and keeps it warm. Produce the effect of.

Further, according to the present embodiment, the cap
33 is press-fitted inside the pipe 31 so that the outer peripheral surface portion 35b is firmly adhered to the inner surface of the pipe 31 in a planar manner, and only the inner protruding portion 36 protruding from the inner peripheral surface portion 35a is linearly ramped. Since the FL is in close contact with the arc tube 22, the frictional resistance between the pipe 31 and the cap 33 is larger than the frictional resistance between the lamp FL and the cap 33, and the cap 33 is not caught by the lamp FL. Therefore, when inserting the lamp FL into the pipe 31 with the cap 33 attached, the lamp FL
Slides smoothly with respect to the cap 33, and the position of the cap 33 can be prevented from shifting or coming off, and the workability of attaching and detaching the lamp FL can be improved.

Further, in the cap 33, the inner protrusion 36 is formed as an annular protrusion continuous over the entire circumference in the circumferential direction.
By reducing the contact surface between the cap 33 and the lamp FL to reduce the frictional resistance, the workability of attaching and detaching the lamp FL can be improved, and the lamp FL can be stably supported.

Further, in the cap 33, a part of the main body portion 35 is thinly formed, and an outer concave portion 38 is formed in the outer peripheral surface portion 35b. Since a space was provided in a part, when mounting the lamp FL, with this lamp FL pressed against the cap 33 side,
This space serves as an escape, so that the cap 33 is easily deformed, and the frictional resistance between the lamp FL and the cap 33 can be reduced. Therefore, it is possible to prevent the position of the cap 33 from being displaced or to come off, and it is possible to improve the workability of attaching and detaching the lamp FL. That is, in a structure in which the frictional resistance between the lamp and the cap is large, the cap is easily pulled off by the lamp when the lamp is inserted, and when the cap is in contact with the base part, when the lamp is inserted, the cap is more than the base part. The arc tube having a large diameter comes into contact with the cap, and the cap easily comes off.

Further, by making the length of the cap 33 along the axial direction smaller than the length of the base portion 23 of the lamp FL, the cap 33 does not easily project from the end portion of the lamp FL, and the lamp FL Can be easily and surely attached to the socket 18.

In the above embodiment, the cap 33
Although the locking projection 39 is provided at the end of the above, the locking projection 39 may be omitted.

Further, the structure for forming the space between the cap 33 and the pipe 31 is not limited to the rectangular outer recess 38 provided at the five places as described above, but may be, for example, four places. Also, other shapes can be used.

Further, in the above embodiment, the socket
Although the waterproof socket including the cap portion 20 and the like has been described as 18, the configuration is not limited to this, and a normal socket that does not include the cap portion or the like can be used. This configuration is effective, for example, for keeping the temperature of the fluorescent lamp that is easily cooled by the air blow of the air conditioner.

Further, as shown in FIG. 5, even if the cap 43 does not have the outer recess 38, the workability of attaching and detaching the lamp FL can be facilitated and the lamp FL can be stably supported. Therefore, the cap is not limited to the structure in which the outer concave portion 38 is provided as in the present embodiment.

[0029]

According to the lamp coating apparatus of the first aspect of the present invention, in the cap, the inner protrusion protruding from the inner peripheral surface of the main body contacts the outer peripheral portion of the arc tube having a diameter larger than that of the base. Therefore, the frictional resistance between the cap and the pipe becomes larger than the frictional resistance between the cap and the lamp, and the cap is less likely to be caught by the lamp, and the lamp can be inserted into the pipe while holding the cap at the predetermined position of the pipe, The workability of attaching and detaching the lamp can be improved.

According to the lamp coating device of the second aspect,
In addition to the effect according to claim 1, since a space is formed in a part between the cap and the pipe, when the lamp comes into contact with the cap, the cap is easily deformed to reduce frictional resistance. The workability of attaching and detaching can be improved.

According to the lighting device of the third aspect, since the lamp covering device according to the first or second aspect is provided, the workability of attaching and detaching the lamp covering device to the lamp can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway enlarged side view of a lighting device showing an embodiment of a lamp coating device of the present invention.

FIG. 2 is a perspective view in which a part of the illumination device is cut away.

FIG. 3 is a side view in which a part of the illumination device is cut away.

FIG. 4 is a perspective view of the same cap.

FIG. 5 is a perspective view showing another embodiment of the cap of the present invention.

[Explanation of symbols]

11 Lighting device 12 Instrument body 15 Lamp coating device 18 socket 22 arc tube 23 Clasp 31 pipes 33 cap 35 Body 35a Inner surface 35b outer peripheral surface 36 Inner protrusion 38 Outer recess FL lamp

Claims (3)

[Claims] 1. A pipe having a light-transmitting property, which covers the arc tube of the lamp away from the arc tube; and an outer peripheral surface portion which is in close contact with the inner peripheral surface of the pipe and an inner peripheral surface portion which faces the outer peripheral portion of the lamp. An area smaller than the area where the outer peripheral surface part and the inner peripheral surface of the pipe are in close contact with the outer peripheral part of the arc tube of the lamp, which is projected from the inner peripheral surface part of the cylindrical main body part and has a larger diameter than the base part of the lamp. And a cap attached to both ends of the pipe; and a lamp covering device. 2. The lamp covering device according to claim 1, wherein the cap is formed so as to be elastically deformable, and the outer peripheral surface part is provided with an outer recessed part that is recessed on the inner peripheral side. . 3. An instrument body having a pair of sockets;
A lighting device comprising: a lamp which is a straight tube type fluorescent lamp mounted between sockets; and the lamp coating device according to claim 1 or 2 which covers the lamp.