JPH0516924Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a simple environmental test device used for comparative tests of plant germination and growth, etc., microorganism culture tests, etc.

(Prior Art) The speed of germination of plants and cultivation of microorganisms varies greatly depending on environmental conditions such as temperature, amount of sunlight, humidity, and nutrients. As a result, in fields related to living organisms, tests that use temperature and solar radiation as parameters are often required, but they are usually conducted using small-sized tests with temperature and daylight fluorescent lamp irradiance set to different values. By arranging a large number of thermostatic testers in parallel, placing test samples in these thermostatic testers and operating them in parallel, various tests using the temperature and the amount of solar radiation as parameters are carried out.

However, there are problems in that preparing a large number of small thermostatic testers requires a lot of expense and effort, and the work of comparing and examining test samples becomes extremely complicated. For example, when comparing the growth of plants placed in sample containers, conventional test methods require that each test container be removed from each thermostatic tester and placed in one place each time a comparison is made, or that samples are collected individually. It is necessary to measure the growth length of plants, and there is a problem in that it is not possible to compare the growth conditions of plants at a glance and efficiently.

In addition, it is extremely difficult to accurately set the interior of a large number of constant-temperature test chambers to the desired conditions, and in reality, errors due to differences in environmental conditions enter the test results, resulting in extremely poor test accuracy. There are some difficulties.

(Problems to be solved by the invention) The present invention solves the above-mentioned problems in conventional germination and growth tests of this kind of plants, culture tests of microorganisms, etc.
That is, it requires a large number of small thermostatic testers, which is not economical, it is difficult to compare growth amounts quickly and efficiently, and the comparison work becomes extremely complicated, and the environmental conditions of each small thermostatic tester This is an attempt to solve problems such as low test accuracy, which is time-consuming to set up, and difficult to accurately maintain the inside of all test devices in a predetermined environment. Tests can be performed easily and efficiently under desired environmental conditions, and
To provide an environmental test device that allows test results to be compared efficiently and at a glance.

(Means for solving the problem) The present invention includes a substantially rectangular metal support plate 1;
a heating device 4 that maintains one side edge of the metal support plate 1 at a desired high temperature over its entire length; and a heating device 4 that maintains the other side edge of the support plate 1 facing the high temperature side over its entire length. Cooling device 5 that maintains the desired low temperature
and; an irradiation plate 2 which is attached to one side of the support plate 1 so as to be able to rise and fall freely and is held and fixed above the support plate 1 at a desired irradiation angle α by a fixture 12; The basic structure of the invention includes a plurality of daylight color fluorescent lamps 3.

(Function) The heating device 4 and the cooling device 5 are activated, and the support plate 1
A temperature gradient is generated between both sides of the support plate 1 by uniformly heating and cooling the opposite sides of the support plate 1 over its entire length.

As a result, by arranging the test containers 14 containing the samples along the sections formed in a grid on the support plate 1, the test containers 14 on each row have the same temperature and their bottom surfaces are on the support plate 1. The test containers 14 on each row are heated at different temperatures at their bottom surfaces.

On the other hand, by holding and fixing the irradiation plate 2 at a predetermined irradiation angle α and lighting the daylight color fluorescent lamp 3, the test containers on each row on the support plate 1 receive approximately the same amount of daylight color irradiation, and each column The upper test vessels each receive different amounts of daylight radiation.

By continuing the temperature gradient and the irradiation by daylight fluorescent lamps for a certain period of time (the fluorescent lamps may be turned on and off at certain intervals), each test container is placed under a different temperature and amount of sunlight for a certain period of time. Become.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a plan view of the simplified environmental test device according to the present invention with the irradiation plate inverted, FIG. 2 is a front view of the irradiation plate fixed, and FIG. 3 is a side view thereof. Moreover, FIG. 4 is a sectional view taken along the line AA in FIG. 1, and FIG. 5 is a piping system diagram of the heating and cooling device for the support plate.

Referring to FIGS. 1 to 5, the simple environmental test device of the present invention includes a metal support plate 1, an irradiation plate 2 that is attached to one side of the support plate 1 so as to be tiltable;
Natural white fluorescent lamp 3 attached to the inner surface of the irradiation plate 2
, a heating device 4 on one side edge of the support plate 1, and a cooling device 5 on the edge opposite to the high temperature side of the support plate 1.
It is composed of.

The support plate 1 is formed into a rectangular shallow box shape from a metal bottom plate (aluminum or stainless steel) 1a with a thickness of 10 to 15 mm and a surrounding plate 1b surrounding its outer periphery, and is placed on a pedestal 6. ing. Said bottom plate 1
A plurality of hot water passages 7, 7 are provided on one side in the longitudinal direction of a.
However, on the other longitudinal side of the bottom plate 1a, a plurality of cold water passages 8, 8 are penetrated in the short side direction of the bottom plate 1a, respectively. Furthermore, a plurality of temperature sensors 9, 9 are embedded in the upper surface side of the bottom plate 1a, and temperature signal lead lines 10, 10 are provided on the top surface side of the bottom plate 1a.
is derived downward.

The irradiation plate 2 has approximately the same external dimensions as the support plate 1, and one side thereof is attached to the upper end of the surrounding plate 1b on the upper side of the support plate 1 via a hinge 11 so that it can be raised and lowered freely. . Further, the irradiation plate 2 is configured to be held and fixed at an arbitrary irradiation angle α by adjusting the fixture 12.

On the inner surface of the irradiation plate 2, a plurality of daylight color fluorescent lamps 3 are arranged side by side at a constant pitch, and in this embodiment, seven 40W daylight color lamps are used.

Note that the daylight color lamp 3 is equipped with a so-called dimmer device 13.
A power supply voltage is supplied through the dimmer, and the luminous flux (i.e., the amount of light irradiation) of the fluorescent lamp 3 is controlled by the light control device.
is adjusted accordingly.

Furthermore, although rod-shaped fluorescent lamps are used in this embodiment, it goes without saying that spherical fluorescent lamps may also be arranged.

The heating device 4 is composed of a small oil (or hot water) heater, and heat medium oil (or hot water) heated to about 80° C. is supplied to the hot water passage 7 on one side edge of the support plate 1. One side edge of the bottom plate 1a is heated to a constant temperature of about 80° C. over its entire length.

In this embodiment, heated oil or hot water is circulated through the hot water passage, but it goes without saying that an electric heater may be directly embedded in the hot water passage 7 instead of the hot water.

On the other hand, the cooling device 5 is formed of a so-called water cooler, and cold water of about 5° C. is cyclically supplied into a cold water passage 8 formed on the other side edge of the support plate 1, and is supplied to the heating side of the bottom plate 1a. The opposite side edge is cooled and maintained at a low temperature of about 5° C. over its entire length.

Next, the operation of the simple environmental test device of the present invention will be explained using a plant growth comparison test as an example.

In the test, first, a predetermined amount of soil (or nutrient solution) and seeds (or seedlings) are placed in an open top test container 14 made of metal or thin glass with good heat conductivity, and then the plurality of test containers 14 are placed. They are arranged in sections 15 carved in a grid pattern on the surface of the support board 1.

Next, the irradiation angle α of the irradiation plate 2 is set appropriately and the irradiation plate 2 is fixed by the fixture 12, and the dimmer 13 is adjusted to adjust the luminous flux of the daylight color fluorescent lamp 3.

At the same time, the heating device 4 and the cooling device 5 are operated to circulate the hot water 4a and the cold water 5a into the passages 7 and 8, so that the edges of both sides of the support plate 1 are heated to a predetermined high temperature (for example, about 45 ℃) and low temperatures (e.g. approx.
℃) and cooled, respectively.

As a result, a substantially linear temperature gradient is generated in the longitudinal direction of the bottom plate 1a, and the bottom surface of the test container 14 is heated to a temperature determined by the position of each compartment 15, respectively. According to the test results,
The temperature gradient for each row of the section 15 is almost the same,
Moreover, the temperature of each section 15 in one row became almost the same.

That is, the large number of test containers 14 arranged on the support plate 1 are heated to a higher temperature as they move from the left side to the right side in FIG. 1, and the luminous flux decreases as they move from the upper position to the lower position in FIG. irradiation dose decreases. As a result, it is possible to find the amount of light and temperature that best promotes growth depending on the type of plant. This is because plants generally do not grow well if the amount of light is too high or too little, and growth also slows if the temperature is high or low.

According to the results of comparative tests on germination and growth of vegetables (high temperature 45℃, low temperature 5℃, irradiation angle α 30°, irradiation time 15 hours per day, 100V x 40W x 7)
In a continuous test of approximately 30 days using daylight color fluorescent lamps, a gradual difference in the amount of plant growth was clearly apparent depending on the location of section 15.

In other words, 60 to 100 samples can be tested simultaneously under different temperatures and light irradiances, and the results can be compared and observed without having to transport the samples. .

In the above test, the simple environmental test device was placed in a room controlled at a room temperature of approximately 20 to 25 degrees Celsius, but in order to further improve the test accuracy, a so-called large-sized Ideally, the test should be conducted by installing the simple environmental test device in a constant temperature room.

(Effect of the invention) In the present invention, both sides of the support plate 1 are maintained at predetermined high and low temperatures, respectively, to create a desired temperature gradient in the X-axis direction of the support plate 1, and the fluorescent lamp Since the irradiation plate 2 with the irradiation plates 3 fixed in parallel is supported and fixed to the support plate 1 so as to be able to move up and down,
The test containers 14 arranged in each compartment 15 on the support plate 1 are heated from below at different temperatures in each row, and receive a different amount of incident light in each row. As a result, it is now possible to test a large number of samples at the same time under different temperatures and light irradiances, improving testing efficiency and allowing comparative observation and study of test results without having to move the samples. It can be done in the state of

Further, by adjusting the high and low temperature side temperatures and the irradiation angle α, various environmental conditions can be freely created, which is extremely convenient in practice.

Furthermore, since the temperature and light irradiation amount are set and adjusted for one unit, there is less labor involved than in the past when many small constant temperature testers were used in parallel. Not only will the period be shortened, but the accuracy of the test will also be significantly improved.

As mentioned above, the present invention has excellent practical effects.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the simplified environmental test device of the present invention with the irradiation plate inverted, FIG. 2 is a front view showing the state in use, and FIG. 3 is a side view showing the state in use. FIG. 4 is a sectional view taken along the line A-A in FIG. 1, and FIG. 5 is a system diagram of a heating device and a cooling device for the support plate. 1...Metal support plate, 2...Irradiation plate, 3...Daylight fluorescent lamp, 4...Heating device, 5...Cooling device,
7... Hot water passage, 8... Cold water passage, 12... Fixture, 13... Light control device, 14... Test container, 15
...A section on the support board.

Claims (1)

[Claims for Utility Model Registration] (1) A substantially rectangular metal support plate 1; a heating device 4 that maintains one side edge of the metal support plate 1 at a desired high temperature over its entire length; The support plate 1
a cooling device 5 for maintaining the other edge facing the high temperature side at a desired low temperature over its entire length;
It is attached to one side of the support plate 1 so as to be able to rise and fall freely,
an irradiation plate 2 held and fixed above the support plate 1 by a fixture 12 at a desired irradiation angle α; and a plurality of daylight fluorescent lamps 3 fixed to the inner surface of the irradiation plate 2.
A simple environmental test device consisting of. (2) Claim (1) in which the heating device 4 is an electric heater
Simple environmental test device described in .