DE3825054A1 - Container for storing slides and the like - Google Patents

Abstract

A container for storing slides and the like, having an interior which is at least largely sealed off relative to the outside air, the container having at least one air inlet and one air outlet opening, which openings are closed by a fine filter.

Description

The invention relates to a container for storage according to the General features of patent claims 1 and 2.

Such containers are used by many amateur photographers Storage of framed slides and as so-called slide magazines common for insertion in the slide projector. As possible dust-free storage of the slides between each Demonstrations such as on slide evenings, are the slide containers largely sealed airtight. Many photo amateurs stick the joint between the container and its lid to avoid any ingress of dust.

However, it does occur when projecting during a screening often complain of fogging of slides or streaks, black spots and, in extreme cases, droplet formation that the distort and affect the projected image. Mostly these image disturbances arise due to the coincidence of warm, humid air on cold slides, e.g. while transporting from a relatively cold motor vehicle to a warm apartment occurs (formation of condensate).

In principle, the same applies to the storage of Video cassettes. To avoid tape damage on misted Cassettes here in a moisture protection circuit Video device turned off. Until the video tape again is ready for demonstration, it must be dried for a long time. This Waiting until readiness to perform is extremely annoying.

In order to remedy this situation, attempts have already been made to frame it Strongly ventilate or dry slides using warm air by a warm fan airflow generated by the projector inserted slide magazine. However, this resulted especially with the first slides of a container increased condensate formation, while when the Slides of the drying air flow especially during demonstrations in the Winter hardly to dry the dejected  Air humidity was sufficient. Together with that by the Airflow increases dust particles and Air pollution then leads to this residual moisture Bacteria, mold and fungus formation on the films. This can especially with variable humidification such as with frequent Transport in cold air and demonstration in warm, damp rooms lead to the destruction of the films.

Even with stationary storage under almost constant Environmental conditions can cause damage and therefore There are losses in the color brilliance of the slide film, especially if the developed slide films immediately after framing in the known, airtight and dustproof containers were stowed. By treatment in the development institution such as watering or When rinsing, the slide film still has considerable residual moisture that evaporates in dustproof containers and the like Can cause damage to the film, like this for the above Transport at frequently changing temperatures and Humidity is described.

Therefore, the object of the invention is to overcome these disadvantages to avoid and one for transportation and / or stationary Storage suitable container for storing slides too create the fog and the harmful effects of Condensate formation is at least greatly mitigated or completely excludes.

This object is achieved by a container according to the characterizing features of claims 1 and 2.

Through the air inlet or outlet opening (s) in the container A targeted air circulation is achieved and at the same time through the fine filter prevents dust from entering the slides. This measure is compared to the previously used dust and thus also air sealing especially for stationary Long-term storage and post-drying of newly developed Slide films suitable in the apartment.

Because this measure through natural air circulation (Chimney effect) is very simple, you can use it in particular  Transfer or storage container in the known version be equipped as a bar or carousel cassette.

In the secondary version, especially as Transport containers are for tempering the interior of the container Heating or cooling elements provided. This will e.g. by Temperature increase in the interior of the container leads to condensation also avoided when encountering moist ambient air, since warm air is known to have higher levels of humidity without Fogging can take and thus the slide film on the after Changing environment prevailing conditions continuously can be adjusted.

To support the natural air circulation and / or the Heating / cooling effect can be an advantageous embodiment Air circulation fan and the heating / cooling elements and / or the air circulation fan in connection with a Humidity measurement can be controlled or regulated.

In stationary storage, the Containers with natural air circulation, especially at more changing environmental conditions, e.g. in the course of a Year or day very different Sun exposure in a room, in an air-conditioned Large containers with constant temperature, air humidity and / or draft controlled or regulated by a fan (Degree of air circulation). With that, the Storage conditions for increased demands such as particularly high quality Films further homogenized and optimized.

Because the films stored or to be transported are sometimes very can be valuable in further development Monitoring and display devices for the relative Air humidity, temperature, blower operation and the like. intended.

Further advantageous embodiments are the subject of Subclaims and are closer in the following description explained. Based on the drawing, two exemplary embodiments described the invention. Show it:  

Fig. 1 shows a longitudinal section through a container for a slides magazine Tange,

Fig. 2 shows a longitudinal section through a transport container according to FIG. 1 with heating elements.

Fig. 1 shows a container 1 with outer walls 1 a , which together with a lid 4 (or equivalent to a door) form an interior 2 in which a plurality of slides 3 is stored in a rod shape. The interior 2 is at least largely sealed off from the outside air by means of seals 4 a and has in its bottom region a circulation shaft 2 a which enables air movement. For this purpose, the air can flow through air inlet openings 5 a in the bottom region of the container 1 and flow out through at least one air outlet opening 5 b in the upper region of the container. The arrangement of fine filters 6 , in particular filter fleeces with a high degree of cleaning, reliably prevents dust and air pollution from the interior 2 . Due to the arrangement of the air inlet and air outlet openings 5 a and 5 b at opposite ends, the magazine-coated slides 3 are coated with air on all sides and thus dehumidified or kept dry.

Fig. 2 shows the container 1 with an air circulation fan 7 and a heating element 8 in the form of a heating coil insulated inset in the container bottom. If cooling is required, for example in rooms with higher temperatures, a heat exchanger 8 'shown here in broken lines can be provided as a cooling element.

The blower 7 has an intake opening 7 a and a blow-out opening 7 b , so that the air in the interior 2 is circulated during operation. Towards the outside there is a second suction opening 7 c for the blower 7 , which has the same effect as the air inlet opening 5 a in FIG. 1, the suction cross section of which can be adjusted in an advantageous manner. The degree of outside air admixture can thus be controlled depending on the prevailing temperature and air humidity. The air humidified by evaporation of residual moisture can escape through an air outlet opening 5 b from the interior 2 or, as here, from the blower 7 to the outside, possibly also in a controlled manner.

These two parameters, temperature and humidity, are detected by a measuring element 9 and fed to a display element 10 , in particular a display on the outside of the container 1, for control by the user. To control the interior conditions, the humidity and / or temperature value detected by the measuring element 9 is fed to a control unit 11 , in particular a microprocessor. This has a limit value setting 11 a as a further input channel. As control or regulating outputs of the control device 11 , this is connected to the blower 7 and heating / cooling elements 8 in order to control their operation, in particular duty cycle or intensity, or to regulate the selected limit value 11 a in feedback with the measuring element 9 . The control unit 11 is also connected to a switching element 12 in order to stop the blower 7 or the heating elements 9 when the cover 4 is opened in order to avoid injuries.

The container 1 shown here holds only a few slide magazines or only a few video cassettes and is therefore particularly suitable as a portable, compact, transport container. For this purpose, the energy supply for the blower 7 and the like can be carried out by plugging into the cigarette lighter of a motor vehicle or by means of appropriately dimensioned batteries, possibly in conjunction with solar cells 13 arranged on the cover 4 .

Of course, the container 1 can also be dimensioned larger to accommodate an extensive slide or video film archive and thus serves as an air-conditioned cabinet for more valuable recordings. With medium-sized dimensions, video devices and similarly sensitive devices can also be stored and / or transported independently of temperature and humidity fluctuations, so that, for example, the sensitive video head drum or lenses in video cameras are neither fogged up nor exposed to the harmful influence of air humidity, especially its acidity.

Claims (8)

1. Container for storing slides and the like., With an at least largely sealed from the outside air interior, characterized in that the container ( 1 ) has at least one air inlet ( 5 a ) and air outlet opening ( 5 b ) with a fine filter ( 6 ) are closed. 2. Container in particular according to claim 1, characterized in that heating / cooling elements ( 8 ) for tempering the container interior ( 2 ) are provided. 3. Container according to claim 1 and / or claim 2, characterized in that the container ( 1 ) has an air circulation fan ( 7 ). 4. A container according to claim 1 and / or claim 2, characterized in that the container has thermally insulated outer walls ( 1 a ) and lid ( 4 ). 5. Container at least according to claim 1 or claim 2, characterized in that measuring elements ( 9 ) for detecting the humidity and / or temperature value in the container interior ( 2 ) are provided. 6. Container at least according to claim 1 or 2, characterized in that display elements ( 10 ) outside the container interior ( 2 ) are provided for displaying the current humidity and / or temperature value. 7. Container at least according to claim 3, characterized in that a control device ( 11 ) is provided for controlling the air humidity and / or air temperature in the container interior ( 2 ) and the air circulation fan ( 11 a ) if the adjustable limit value is exceeded / undershot. 7 ) and / or heating / cooling elements ( 8 ) can be switched on. 8. Container at least according to claim 2 and 3, characterized in that on the parts to be opened (cover 4) of the container ( 1 ) an operation of the blower ( 7 ) and / or heater ( 8 ) interrupting switching element ( 12 ) is provided.