JPH0584846U - Temperature test device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a test device for testing a component having a relatively small volume. A heat insulating container, a part to be tested housed in the heat insulating container, a means for detecting a temperature in the heat insulating container, and a means for maintaining a state in the heat insulating container are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a temperature test device for testing the behavior and the like of a test object depending on ambient temperature conditions and the like. More specifically, it relates to an apparatus for testing a test object having a relatively small volume such as an electric component.

[0002]

[Prior Art]

 A typical example of this kind of device was a so-called environmental test device for testing a device having a relatively large volume. This environmental testing device has a sealed structure that is isolated from the surroundings, and the device body or device block to be tested is installed in this sealed structure (container). Further, it had a heat source and the like for making the inside of the closed container a predetermined environmental condition (temperature, humidity, etc.).

[0003]

[Problems to be solved by the device]

 As described above, in the conventional environment test apparatus, it is necessary to form the closed container so as to be able to hold the entire test apparatus or at least the constituent blocks thereof. For this reason, in such an apparatus, a strong heat source and a cold source were required when performing a temperature test, and a powerful humidifying and dehumidifying means was also required to perform a humidity test.

Further, when the apparatus main body or its constituent blocks are not tested as described above but a small volume such as an electric component is tested, the environmental test apparatus as described above is not suitable. was there. In order to solve this drawback, the present applicant has proposed a small test apparatus in Japanese Patent Application No. 3-353064 filed earlier. This device is a further development of the previous proposal.

[0005]

For this reason, in the present invention, a container capable of holding the DUT for performing a temperature test on the DUT, and for detecting the temperature inside the container A temperature test device having a temperature sensor provided in the container, and means for sending cold air or warm air from a cold heat source into the container to maintain the inside of the container at a predetermined temperature based on the temperature detected by the temperature sensor. In the above, the container is provided with an inlet for taking in the cold air or the warm air and an outlet for exhausting the gas in the container, and the cold heat source brings the gas discharged from the outlet of the container to a predetermined temperature. After the adjustment, it was configured to be fed into the container through the inlet of the container.

[0006]

[Action]

 The container of the test device is constructed so that it can store, for example, electrical components to be tested. Then, a cold heat source that sends cold air or warm air into the container is operated so as to set the inside of the container to a predetermined temperature state. A temperature sensor for detecting the temperature inside the container is installed in the container, and the behavior of electrical parts and the like under a predetermined temperature condition can be tested. In this case, since the gas that sets the temperature inside the container is circulated and used, the temperature can be efficiently controlled.

[0007]

【Example】

 FIG. 1 is a configuration explanatory view showing an embodiment of a test apparatus according to the present invention. The test apparatus shown in FIG. 1 relates to an apparatus which is particularly suitable for testing electric parts and the like. In the figure, 11 is a temperature setter, 12 is a temperature control device, 13 is a flexible pipe for delivery, 14 is a flexible pipe for intake, 15 is a heat insulating container, 20 is a printed wiring board, and 21 is a component under test.

The component under test 21 is connected to a power source, a signal source, or the like (not shown) so as to be capable of so-called actual operation.

As the heat-insulating container 15 of the test apparatus, for example, a container having a bottom surface of 50 mm cubic with an opening is used. The part to be tested 21 is housed in this opened container so as to cover it.

An inlet 151 for introducing cold air or warm air sent from the temperature control device 12 to the heat insulating container 15, and a gas for sending the gas in the heat insulating container 15 to the temperature control device 12. A discharge port 152 is provided. Then, the flexible pipes 13 and 14 which can be bent are used to connect the temperature control device 12 and the intake port 151 and the exhaust port 152 of the heat insulating container 15. Although not shown, the temperature control device 12 is provided with a heater and a cooling device, and the temperature inside the heat insulating container 15 is set to a predetermined temperature (this temperature is set by the user using the temperature setting device 11). Set to temperature).

The temperature inside the heat insulating container 15 is detected by a temperature sensor embedded in the side wall of the heat insulating container 15. Then, the detection result is sent to the temperature control device 12 to bring the temperature in the heat insulation container 15 to a predetermined state.

In this way, when the inside of the heat insulating container 15 reaches a predetermined temperature, the user actually operates the component under test 21. A probe (not shown) of another test device such as an oscilloscope is connected to the component under test 21, and the behavior of the component under test 21 when the component under test 21 is in a predetermined temperature environment is measured.

FIG. 2 shows a second embodiment according to the present invention. This device is so constructed as to directly send cold air or warm air to the component under test 21 without having the heat insulating container 15 and is various.

[0014]

[Effect of the device]

 As described above, according to the present invention, it is possible to realize a test apparatus particularly suitable for testing an object to be tested having a small volume.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

FIG. 2 is a structural explanatory view showing another embodiment.

[Explanation of symbols]

 15: Heat insulation container 16: Temperature sensor 21: Parts under test

Claims (1)

[Scope of utility model registration request] 1. A container capable of holding a test object for performing a temperature test on the test object, a temperature sensor provided in the container for detecting a temperature inside the container,
In a temperature test device having means for sending cold air or warm air into the container from a cold heat source or a warm heat source in order to maintain the inside of the container at a predetermined temperature based on the temperature detected by the temperature sensor, the cold air or warm air is taken in. An inlet for discharging the gas in the container and an outlet for discharging the gas in the container are provided in the container, and after the cold heat source adjusts the gas discharged from the outlet of the container to a predetermined temperature, the inlet of the container A temperature test device characterized in that it is fed into the container via