JP4518272B2 - lighting equipment - Google Patents

Description

  The present invention relates to an improvement of a lighting fixture mounted inside a cylinder.

Conventionally, for example, a lighting fixture used in a volatile place has a structure in which a straight fluorescent lamp is mounted inside a light-transmitting cylinder in order to be hermetically sealed. (See Patent Document 1)
In order to protect the lamp, a lighting fixture used in a place where dust flies, for example, has a structure in which a straight fluorescent lamp is mounted inside a translucent cylinder. (See Patent Document 2)
In addition, lighting fixtures used in cold regions have a structure in which, for example, a straight tube fluorescent lamp is mounted inside a translucent cylinder in order to keep the lamp warm.

JP-A-2005-268163 JP 61-200602 A

By the way, if a straight tube lamp mounted inside the light-transmitting cylinder is replaced during the life of the lamp or the like, the work becomes complicated, and there is a drawback that the lamp replacement work requires a lot of work.
Further, when a straight tube lamp is inserted into the translucent cylinder, it is necessary to fit the lamp pin of the straight tube lamp into the lamp pin insertion opening of the socket.
However, the tube diameters of the straight tube lamps are, for example, 25.5 mm, 28.0 mm, and 32.5 mm, and the straight tube lamps having different tube diameters are used on the receiving side of the translucent cylinder. It takes a lot of work to fit the lamp pin into the lamp pin insertion slot of the socket.
That is, when trying to fit lamps with different tube diameters into sockets of the same size, it is difficult to fit the lamp pin into the lamp pin insertion slot because the lamp with one tube diameter has its own weight. As the straight tube lamp, for example, a straight tube fluorescent lamp is used.

  This invention is invented in view of the above-mentioned subject, Comprising: It aims at providing the lighting fixture which can attach or detach the straight tube | pipe lamp of a different pipe diameter easily.

In order to solve the above-mentioned problems, the present invention provides a lighting apparatus in which a straight tube lamp having caps at both ends is mounted in a translucent cylinder having sockets at both ends.
When installing a straight tube lamp with a tube diameter smaller than a predetermined one in the translucent cylinder, a lamp support for height adjustment is fitted to the base part on the receiving side of the translucent cylinder. It is.
The lamp support has a plurality of protrusions integrally formed on the outer periphery of the cylindrical annular body.

According to a second aspect of the present invention, the inner surface of the socket lid according to the first aspect from the insertion direction on the lamp pin receiving side has an arcuate curved surface.

  According to a third aspect of the present invention, the lamp support according to the first and second aspects includes a downward inclined portion from the outer side to the inner side of the protruding portion.

  According to a fourth aspect of the present invention, the heat radiating space is formed by the protrusion and the protrusion of the lamp support according to the third aspect.

According to claim 1 described above, when a straight tube lamp having a small tube diameter is mounted in the light-transmitting cylinder, by fitting a lamp support for height adjustment to the base portion of the straight tube lamp, A straight tube lamp with a small tube diameter can be easily attached and detached.
Further, since the lamp support is fitted to the base portion of the straight tube lamp and does not reach the light emitting portion of the straight tube lamp, the light flux can be maintained.

According to the second aspect of the present invention, the inner surface of the socket cover body from the insertion direction on the lamp pin receiving side has an arcuate curved surface. Then, the lamp pin easily fits into the lamp pin insertion opening of the socket along the arcuate curved surface.

According to the third aspect of the present invention, since the projecting portion of the lamp support has a downward inclined portion from the outer side toward the inner side, when the straight tube lamp is taken out from the translucent cylinder, The support can be easily taken out without being caught by the cylinder.

According to the fourth aspect of the present invention, the heat inside the translucent cylinder of the straight tube lamp moves from the heat radiation space formed by the projection and the projection of the lamp support to the internal space of the socket, Temperature rise can be suppressed.

The best mode of the lighting apparatus of the present invention will be described below with reference to FIGS.

A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view showing the entire lighting fixture according to the present invention, and FIG. 2 is a partially cutaway front view of the lighting fixture of FIG. 1 and 2, 1 is a lighting fixture body, 2 and 3 are cylindrical holders provided in the vicinity of both ends of the lighting fixture body 1, and 2 is arranged on the side for receiving a straight tube lamp. 3 is arranged on the side where the straight tube lamp is inserted. Reference numerals 4 and 5 are open / close lids which are configured to be screwed into the holder.
Reference numeral 6 denotes a socket which is mounted and supported on a holder disposed on the side where the straight tube lamp is received, and 7 is a socket which is mounted and supported on a holder disposed on the side where the straight tube lamp is inserted. 8 is a translucent cylinder, which is made of, for example, glass or plastic and has a size of 46 mmΦ. 9 is a straight tube lamp mounted inside the translucent cylinder. For example, a straight tube fluorescent lamp having a tube diameter of 25.5 mm, a straight tube fluorescent lamp having a diameter of 28.0 mm, and a tube diameter of 32. A 5 mm straight tube fluorescent lamp is used. The length of the straight tube fluorescent lamp is 585.5 mm for 16 watts and 1198 mm for 32 watts. Reference numeral 10 denotes a guard for protecting the translucent cylinder.

FIG. 3 is a partially cutaway front view of a socket that is mounted and supported on a holder disposed on the side of receiving a straight tube lamp according to the present invention, and FIG. 4 is a side view of the socket shown in FIG. In FIG. 3, reference numeral 20 denotes a socket body, and reference numeral 21 denotes a lid configured to have a size corresponding to the socket body, and has a lamp pin insertion hole 22. The inner surface from the insertion direction on the lamp pin receiving side with the lamp pin insertion hole 22 as the center has a curved surface inclined in a bowl shape. Reference numeral 23 denotes a metal receiver which is screwed into a concave portion on the inner surface of the socket body 21, and a portion corresponding to the lamp pin has a V-shaped concave portion 24. Further, a part of the metal receiver 23 is configured to be located outside the socket body 20 so that it can be directly electrically connected.

FIG. 5 is a partially cutaway front view of a socket in which a straight tube lamp according to the present invention is mounted and supported on a holder arranged on the insertion side, and FIG. 6 is a side view of the socket shown in FIG. FIG. 7 is a partially cutaway sectional view showing a state where the straight tube lamp is supported by the socket. 5 and 6, 30 is a socket body, and 31 is a lid configured to have a size corresponding to the socket body, and has a lamp pin insertion hole 32. Since the lamp pin insertion hole 32 is on the insertion side of the straight tube lamp, the hand can be seen when the straight tube lamp is attached / detached. . Reference numeral 33 denotes a metal receiver which is screwed into a concave portion on the inner surface of the socket body 31 and has a holding portion 34 for inserting and supporting a lamp pin.

8 is a perspective view of the lamp support, FIG. 9 is a side view of the lamp support shown in FIG. 8, and FIG. 10 is a front view of the lamp support shown in FIG. 8 to 10, reference numeral 40 denotes a cylindrical annular lamp support, which is made of silicon rubber. By fitting the lamp support 40 to the base portion of the straight tube lamp, the height of the lamp pin is adjusted in the cylinder, and a straight tube lamp having a small tube diameter can be easily attached to the socket. Further, since the lamp support does not reach the light emitting part of the straight tube lamp, it is possible to maintain a predetermined light flux. The protrusion 41 has a downward inclined portion 42 from the outer side toward the inner side. By providing the inclined portion 42 in the protruding portion 41, when the straight tube lamp is taken out from the translucent cylinder, the lamp support can be easily taken out without being caught by the cylinder.

Reference numeral 43 denotes a heat radiation space formed by the protrusion 41 and the protrusion 41 of the lamp support.
By configuring the heat radiating space 43, the heat inside the translucent cylinder flows through the internal space of the socket, and the temperature rise inside the translucent cylinder can be suppressed.
In addition, you may comprise the above-mentioned translucent cylinder other than the structure comprised by one, and connecting two or more.

Next, the attachment / detachment of the straight tube lamp in the first embodiment will be described.
[About the order of installing straight tube lamps]
(1) A translucent cylinder 8 is disposed between cylindrical holders 2 and 3 in the vicinity of both ends of the luminaire body 1, and a socket 6 is supported on the holder 2 disposed on the side receiving the straight tube lamp. Further, the socket 7 is supported on the straight tube lamp on the fitting side.
(2) Next, the lamp support 40 is fitted into the cap portion on the receiving side of the straight tube lamp to the translucent cylinder 8, and the straight tube lamp is inserted into the translucent cylinder.
In this case, the height of the lamp pin is adjusted by the lamp support 40, the lamp pin proceeds along the arcuate curved surface, and is easily fitted into the lamp pin insertion port 22 of the socket.
(3) After that, the lid 5 is screwed into the holder 3 to complete the installation work of the straight tube lamp.

[Removal order of straight tube lamp]
(1) To remove the straight tube lamp when replacing the straight tube lamp, etc., remove the cover 5 of the holder 3 on the fitting side of the straight tube lamp, together with the socket 7 on the fitting side of the straight tube lamp. Pull out the straight tube lamp.
(2) When the straight tube lamp is pulled out together with the socket 7, the projecting portion of the lamp support 40 has the inclined portion 42 from the outer side toward the inner side. The lamp support can be easily taken out without being caught by the cylinder 8.

The front view showing the whole lighting fixture which concerns on this invention. The partially cutaway front view of the lighting fixture of FIG. FIG. 3 is a partially cutaway front view of a socket that is attached to and supported by a holder disposed on the side that receives the straight tube lamp shown in FIG. 2. The side view of the socket shown in FIG. The partially cutaway front view of the socket formed by mounting and supporting the holder formed on the side where the straight tube lamp according to the present invention is inserted. The side view of the socket shown in FIG. The partially cutaway sectional view showing a state when the straight tube lamp is supported by the socket. FIG. 8 is a perspective view of the lamp support. The side view of the lamp support shown in FIG. FIG. 10 is a front view of the lamp support shown in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lighting fixture main body 2, 3 Holder 4, 5 Opening / closing lid | cover 6, 7 Socket 8 Translucent cylinder 9 Straight tube type lamp 10 Guard 20, 30 Socket main body 21, 31 Lid body 22, 31 Lamp pin insertion hole 23, 33 Receipt 24 Concave part 34 Nipping part 40 Lamp support 41 Projection part 42 Inclination part 43 Heat radiation space part

Claims (4)

In a lighting fixture in which a straight tube lamp having a base at both ends is mounted inside a translucent cylinder having sockets at both ends,
When installing a straight tube lamp with a tube diameter smaller than the specified one in the translucent cylinder, a lamp support for height adjustment is fitted to the base of the translucent cylinder of the straight tube lamp. In addition, the lamp support has a plurality of protrusions integrally formed on the outer periphery of the cylindrical annular body. The lighting fixture according to claim 1, wherein an inner surface of the socket lid body from the insertion direction on the lamp pin receiving side has an arcuate curved surface. 3. The lighting apparatus according to claim 1, wherein the lamp support has a downward inclined portion from the outer side to the inner side of the projecting portion. The lighting apparatus according to claim 1, wherein the heat radiating space is formed by the protrusion and the protrusion.

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