JPS647540Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to the structure of a lighting fixture that is attached to a wall and projects lamp light upward.

[Background Art] FIG. 2 shows a sectional view of a conventional lighting fixture of this type that is attached to a wall surface and projects lamp light upward. Mounting member 2 on wall surface 21
The cylinder main body 1', which is attached through the tube 0, has an open upper surface and a closed lower surface. A U-shaped socket base 24 is located approximately in the center of the bottom surface of this cylinder body 1'.
is attached, and the socket 2 for mounting the lamp 3 is attached to the upper surface of this socket base 24.
A stabilizer 4 is attached to the inner peripheral surface on the bottom side of the tube body 1', and a terminal block 9 is attached to the outer surface on the wall surface 21 side of the tube body 1'. This terminal block 9 is used as a relay to electrically connect to an external power source via a power line 18 and to electrically connect to an internal ballast 4 and the like. Incidentally, the tube body 1', that is, the lighting fixture, can be attached to the attachment member 20 by means of attachment screws 19.

The reflecting plate 6 that reflects the light of the lamp 3 upward is
It is arranged around the outside of the lamp 3 with the upper opening surface facing up. The cross section is L on the upper opening side of the cylinder body 1'.
A ring-shaped mounting bracket 25 is fixed by screws or welding, and the flange 14 of the reflector 6 is attached and fixed to the lower surface of the horizontal piece of the mounting bracket 25. Further, a panel frame 16 is attached to the mounting bracket 25, and a panel 7 is disposed on the panel frame 16 in a manner that closes the upper opening surface of the reflector plate 6. This panel 7 and panel frame 16 make up the reflector 6.
The upper opening surface of the reflector 6 is closed, and the outer side of the reflector 6 and the inner upper part of the cylinder body 1' are closed by the flange 14 and the mounting fittings 25 of the reflector 6. Therefore, since the upper part of the cylinder body 1' is closed, a heat radiation hole 26 for dissipating heat is bored in the upper side surface of the cylinder body 1'.

Such conventional examples have the following problems. That is, the heat of the lamp 3 and the ballast 4 affects the terminal block 9 and the power line 18 through heat conduction through the cylinder body 1', as shown by the broken line A in the figure. In addition, there is no gap between the reflector 6 and the panel 7, and there is little heat dissipation from the lamp 3 due to convection, so that heat is trapped as shown by arrow B in the figure, resulting in less heat dissipation effect and an increase in temperature. Furthermore, as shown by arrow C, convection on the outside of the reflector plate 6 is also poor in heat dissipation due to convection since the upper part is closed even if the heat dissipation hole 26 is provided. Furthermore, since the ballast 4 is placed below the terminal block 9, air heated by the ballast 4 passes through the terminal block 9 side, as shown by arrow D, so that the terminal block is heated by convection. There was a problem that the heat dissipation effect of No. 9 was low.

[Purpose of the invention] The present invention was provided in view of the above-mentioned points, and it reduces the heat conduction of a heating element such as a ballast or lamp to the cylinder body or terminal block, and also reduces the air inside the cylinder body. This provides a structure for a lighting fixture that aims to smooth the flow of water and lower the overall temperature.

[Disclosure of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings. FIG. 1 shows a cross-sectional view of the lighting fixture of the present invention. In the figure, 1 is a cylindrical main body, and openings 10 and 11 are formed in the upper and lower surfaces, respectively. Reference numeral 5 denotes a mounting base disposed above the opening 11 and at the lower part of the cylinder body 1 so as to be spaced apart from the inner circumferential surface of the cylinder body 1; It is fixed with screws 13 by a fixing metal fitting 12 fixed to. In addition, there is a socket 2 in the center of the top surface of the mounting base 5.
is attached, and a stabilizer 4 is placed on the side of the socket 2. 3 is a lamp attached to the socket 2. In this way, lamp 3, socket 2,
Heat generating elements such as the ballast 4 are centrally arranged on the mounting base 5.

Reference numeral 6 denotes a reflecting plate disposed around the lamp 3, which is shaped like a bowl with an open top. That is, the reflector plate 6 is arranged with the opening surface facing upward. The lower part of the reflector 6 is in contact with the outer periphery of the socket 2, and the upper part is secured by hooking a flange 14 formed around the periphery to the inner tip of an L-shaped mounting bracket 15 fixed to the inner periphery of the cylinder body 1. There is. That is, a plurality of mounting brackets 15 are fixed along the inner circumferential surface of the cylinder body 1, and by locking the flange 14 of the reflector 6 to the tip thereof, the reflector 6 can be attached to the inner circumferential surface of the cylinder body 1. It is placed away from the surface. Reference numeral 7 denotes a panel located at the upper opening 10 of the cylinder body 1, and this panel 7 is fitted into the panel frame 16 with a gap S between it and the upper opening of the reflecting plate 6. Also, this panel frame 1
6 is mounted on a plurality of fixing fittings 17 which are fixed to the upper part of the inner peripheral surface of the cylinder body 1 and have a substantially U-shaped cross section.
The outer diameters of the panel frame 16, the reflector 6, and the mounting base 5 are smaller than the inner diameter of the cylinder body 1, and there are upper and lower openings between the outer side of these members and the inner peripheral surface of the cylinder body 1. A groove 8 communicating with 10 and 11 is formed.

Reference numeral 9 denotes a terminal block attached to the outer circumferential surface of the cylinder body 1, which is electrically connected to an external power source via the power line 18, and is also used as a relay to electrically connect to the internal ballast 4, etc. It is. Reference numeral 20 denotes a mounting member fixed to a wall surface 21, and the tube body 1, that is, the lighting fixture, is mounted to the mounting member 20 by means of mounting screws 19.

Since the mounting base 5 and the cylinder body 1 are separated from each other, heat from the heat generating elements such as the lamp 3 and the ballast 4 is blocked from being conducted to the terminal block 9. The heat from the mounting base 5 escapes upward through the groove 8 due to the convection of air that enters between the mounting base 5 and the lower part of the cylinder body 1, as shown by the arrow in the figure.
The heat is not conducted to the cylinder body 1. Furthermore, since the air from below entering through the opening 1 of the cylinder body 1 flows upward through the groove 8 as described above, the overall temperature rise is suppressed. In particular, since cold air from below flows upward through the grooves 8, the heat dissipation effect of the terminal block 9 is great. Moreover, since the gap S is provided between the reflection plate 6 and the panel 7, heat can be efficiently dissipated. In addition, as shown by the dashed line in the figure, by providing an auxiliary plate 22 parallel to and apart from the inner peripheral surface of the cylinder body 1, the air flow can be made smoother and the temperature can be further lowered. be.

[Effects of the invention] As mentioned above, the present invention has a mounting base on which a socket, a lamp to be attached to the socket, and a heating element such as a ballast are centrally arranged, in the lower part of a cylinder body whose top and bottom surfaces are open. A bowl-shaped reflector plate with an open top surface located around the outside of the lamp, which is spaced apart from the lower opening surface and the inner peripheral surface of the cylinder body, and a bowl-shaped reflector plate with an open top surface located around the outside of the lamp, and a gap above the opening surfaces of the lamp and reflector plate. The upper and lower parts of the cylinder body are placed between the mounting base, the reflector, and the outer part of the panel and the inner peripheral surface of the cylinder body. This is because a terminal block is attached to the outer circumferential surface of the cylinder body, which forms a groove for air circulation that communicates with the cylinder in both directions, and is electrically connected to an external power source and an internal ballast, etc. Heat generating elements such as lamps, sockets, and ballasts are centrally arranged on the mounting base, and by arranging the mounting base at a distance from the inner circumferential surface of the cylinder body, the heat generated from these heating elements is concentrated within the cylinder. Heat conduction to the main body is blocked, and the cold air that enters from the gap between the cylinder main body and the mounting base flows upward through the groove on the inner circumferential surface of the cylinder body, resulting in heat conduction to the cylinder main body. This has the effect of reducing heat conduction to the terminal block attached to the tube body, and the heat from the lamp is transferred to the groove side through the gap between the opening surface of the reflector and the panel. The heat from the lamp as well as the heat from heating elements such as sockets and ballasts escapes upward through the grooves due to air convection, which has the effect of suppressing the overall temperature rise. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional example. 1 is the tube body, 2 is the socket, 3 is the lamp, 4 is the ballast, 5 is the mounting base, 6 is the reflector, 7 is the panel,
8 is a groove, 9 is a terminal block, and S is a gap.

Claims (1)

[Scope of utility model registration request] A panel is placed on the top opening of the tube body that is attached to a wall, etc., and a reflector with an opening on the top that reflects the light from the lamp upward is placed inside to reflect the light from the lamp upward through the panel. In lighting equipment that emits light to Arranged at a distance from the inner peripheral surface of the main body,
A bowl-shaped reflector with an open upper surface located around the outside of the lamp, and a panel located above the open surfaces of the lamp and reflector with a gap between them are attached to the upper part of the cylinder body from the inner peripheral surface of the cylinder body. A groove for air circulation that communicates in the vertical direction of the cylinder body is formed between the outside of the mounting base, reflector, and panel and the inner circumferential surface of the cylinder body, and an external power source and electric A lighting fixture structure in which a terminal block is attached to the outer circumferential surface of the tube body for electrical connection with internal ballasts, etc.