US1849634A

US1849634A - Ventilating hood for show case lights

Info

Publication number: US1849634A
Application number: US241231A
Authority: US
Inventors: Reuben E Ottenheimer
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-12-19
Filing date: 1927-12-19
Publication date: 1932-03-15
Anticipated expiration: 1949-03-15

Description

March 15, 1932.- R E. OTTENHEIMER VENTILATING HOOD FOR SHOW CASE LIGHTS Original Filed Dec. 19. 1,927

Patented Mar. 15, 1932 UNITED STATES REUBEN E. OTTENHEIMER, F BALTIMORE, MARYLAND VENTILATING HOOD FOR SHOW CASE LIGHTS Application filed. December 19, 1927, Serial No. 241,231.

This invention relates to illuminating devices for show cases and particularly to a combined ventilator and reflector for use where a light source is housed in a portion of the show case structure. Wherever a light source is so mounted, some means must be provided to dissipate the heat generated by the light source, and when such light sources are used in conjunction with refrigerated cases this problem assumes even greater importance.

In my prior Patent No. 1,572,855, granted February 9, 1926, I have described a refrigerated case structure in which the light source is mounted between the top rails of a narrow topped show case, and in which the heat is discharged through vent openings formed in such top rails. This construction is effective but does not lend itself well to that type of display case construction in which all portions of the case other than the glass are sheathed with porcelain enameled iron.

The objects of the present invention, therefore, are, first, to provide a ventilator of peculiar effectiveness so far as the dissipation of heat is concerned, and, second, to provide a ventilator unit which may be used conveniently in show cases which are sheathed with porcelain enameled iron, as well as others, which permits ready access to the light sources in case of need and which offers an attractive display feature which may be availed of conveniently when desired.

A practical embodiment of the invention is shown in the accompanying drawings, in Which- Fig. 1 is a fragmentary perspective view of the top portion of the display case showing my improved ventilator applied.

Fig. 2 is a section on the line 22 of Fig. 3.

Fig. 3 is a section on the line 3-3 of Fig. 2.

Fig. 1 is a perspective view of the frame member forming a part of the ventilator viewed from the lower or bottom side.

Fig. 5 is a perspective of the reflector, viewed from the lower side.

The top rails of the case are indicated at 6 and 7. A portion of the front glass panel is shown at 8. The top rails 6 and 7 are concealed by a sheet metal cap plate 9 having flanges 10 and 11 which overhang the rails Renewed May 2, 1930.

6 and 7 respectively. The cap plate 9 is usually finished in porcelain enamel. A glass plate 12 extends between the lower edges of the top rails 6 and 7, and serves to isolate the lamp space from the interior of the case. 7

The construction of the parts so far described is not a part of the present invention and may be changed in various ways. For example, it is common practice in refriger ated cases to use double glazing, i. e., two glass panels with a narrow air space between, and such construction may, if desired, be adopted for both panels 8 and 12.

Above the glass panel 12 and between the rails 6 and 7 there is mounted an elongated incandescent lamp bulb 13 which is mounted in a keyless socket 14. The socket 14 is supported by a tube 15 carried by a bracket 16. The bracket 16 is carried by a filler block 17 which connects the top rails 6 and 7 Any equivalent way of supporting the lamp might be substituted.

Directly over the lamp 13 an elongated generally rectangular opening is formed through the top plate 9. This opening is preferably slightly wider than the interval between the rails 6 and 7, and is of any desired length, but preferably greater than the length of the bulb 13.

Mounted in this opening is a frame member indicated generally by the numeral 18. This has a m arginal flange 19, which seats on the top of the plate 9 and a centering flange 20 which enters the opening in the top plate 9 and serves to position the frame 18. The frame 18 is closed at the front side and at both ends, but at the rear has a bar 21 which overhangs an upwardly inclined flange 22, leaving an intervening air discharge port 23 (see Fig. 2) extending the entire length of the rear side of the ventilator frame.

As is clearly shown in the drawings, the frame 18 is inclined upward to the rear. The frame 18 is open at its top, there being a rectangular opening defined by a flange 24 which is sunk below the margin of the top of the frame and which serves as a seat to receive a removable top plate 25. This plate 25 is held in place by small bolts 26 which pass p through holes in said plate and through registering holes 26' in the end flanges 24f of the frame 18. Below the frame 18 they pass through a reflector 27 whose curved form is clearly shown in Fig. 2. This reflector lies below the flanges 24 of the frame 18, and is retained by nuts 28 applied to the bolts 26. The reason for making the plate 25 removable is to permit the interchange of various types of plates bearing trademarks or advertising data conforming to the wishes of the user of the case.

The frame 18 is fixed in position in such a way that it may be removed on occasion, for example, for the replacement of lamp bulbs 13.

Fixed in the front flange 20 are two projecting pins 29 which underlie the top plate 9 in recesses formed in the rail 7 to receive them.v On the rear side of the case the flange l9 is extended as shown at 30, and is provided with a hole 31 which receives a screw 32 driven through a registering hole in the top plate 9, and into the rail 6.

By removing the screw 32 and lifting the rear edge of the frame 18, it thus becomes possible to withdraw this frame rearwardly, thus giving access to the lamp. After the frame has been removed it is possible to dismount the top plate 25 and reflector 27.

It will be observed that the reflector 27 blinds the slot 23 so far as the passage of light directly from the lamp is concerned. The reflector 27 is spaced from the frame 18 and also from the top plate 25 in such a way as to offer a passage for heated air over the top of the reflector and to the slot 23. The effect is to create a circulation favorable to the discharge of heat from the lamp space.

The form of the device is attractive, as is the possibility of using it for advertising display. The removable top plate 25, being usually formed of translucent material lends itself well to such an advertising display. The manner in which the ventilator frame is mounted on the case provides a construction suited to cases sheathed with enamel metal which, nevertheless, permits necessary access to the lamp space.

hat is claimed is 1. The combination with a show case having a light source mounted within the struc ture of the case and having an opening above said light source, of a combined ventilator and reflector comprising a frame member seated on the case and having a centering portion extending into said opening, said frame being provided with a ventilating port, and with an inclined seat to receive a removable top plate, a top plate removably mounted in said frame; a reflector overlying said light source spaced from said frame and top plate; and releasable means for fastening said top plate and reflector in position.

2. A combined display device and ventilator for show cases comprising a frame member adapted to be mounted on the top of a show case over a light source, said frame member being inclined upwardly and rearwardly and being formed with an opening in its top, such opening having a seating flange, and the frame member having a port for the escape of heated air, a plate removably mounted on said flange and closing the first named opening, and means for preventing the passage of light from said source through said port.

3. The combination of a refrigerator display case, artificial lighting means mounted at the top of said case, a light transmitting panel mounted within said case isolating said lighting means from the main interior refrigerated portion of said case, ventilating means for discharging heated air from said lighting means, comprising a frame member adapted to be mounted on the top of said case and having an apertured top and a port for the escape of heated air; a plate removably seated in the aperture in said top, and means carried by said plate to guide the heated air to said port.

4;. The combination with a refrigerator display case having a transparent display panel and artificial lighting means mounted adj acent the upper portion of said panel to illuminate the interior of said case, of means to disperse heat generated by the lighting means and to prevent flow of said heat into the refrigerated interior of the case, comprising a ventilator frame mounted above said lighting means and a plate mounted below said lighting means, said frame and plate together with the top of the case forming an enclosure for said lighting means and said frame having an upwardly inclined top portion, said portion being formed with an opening in its top having a seating flange, and said frame being formed with an elongated port for the escape of heated air, a plate removably mounted on said flange and closing the first named opening, and means in said frame for blocking the passage of light from the interior of said enclosure through said port.

5. The combination of a refrigerator display case, artificial lighting means mounted at the top of said case, a light transmitting panel mounted within said case and isolating said lighting means from the main interior refrigerated portion of said case, ventilating means for discharging heated air from said lighting means comprising a frame member mounted above the lighting means and having an apertured top, and a port for the escape of heated air, a plate removably seated in the aperture in said top, and a reflector overlying said light source and mounted in spaced relation to said plate whereby heated air may flow around and behind the reflector to said port, and common means securing said plate and reflector to said frame member.

6. A refrigerator display case having an illuminating chamber in its upper portion, a light transmitting panel closing the bottom of said chamber and a display ventilator closing the top of said chamber, lighting means within said chamber, said ventilator including a frame member provided with a removable top panel adapted to the display of advertising, a ventilating port in one side of said frame member, and means carried by said plate in spaced relation thereto to block the passage of light through said ventilating port and to direct heated air from within the chamber to said port.

In testimony whereof I have signed my name to this specification.

REUBEN E. OTTENHEIMER.