JP2018194338A - Environmental testing device and lamp unit - Google Patents

Abstract

To provide an improved environmental testing device with a troubleproof lamp for irradiating a test target object with light.SOLUTION: An environmental testing device 1 includes: a testing room 5; and a lamp 31 for irradiating a test target object 18 with light, and has a function of irradiating the surface of the test target object 18 with light in a desired environment. The device has a cooling room 20 separate from the testing room 5. At least the power supply part of the lamp 31 is in the cooling room 20, and at least the top end surface of the bulb of the lamp 31 is outside the cooling room and is exposed to the inside of the testing room 5.SELECTED DRAWING: Figure 1

Description

The present invention relates to an environmental test apparatus for performing a test by placing a device under test in a predetermined environment. The present invention particularly relates to an environmental test apparatus having a function of irradiating light on the surface of a test object.
The present invention also relates to a lamp unit that is disposed in a test chamber of an environmental test apparatus and irradiates light on the surface of a test object.

One of the methods for examining the performance and durability of products and materials is environmental testing. As one of the environmental tests, there is a test in which an environment in which the DUT is placed is artificially reproduced and the DUT is exposed to the environment.
For example, there is a market demand to reproduce the environment in a car parked under a hot sun and to know changes in the test object under the environment of automobile interior parts, mobile phones and other test objects.
When a car is parked under hot weather with the car window closed, the temperature inside the car rises to about 80 degrees Celsius. In addition, automotive interior parts such as instrument panels and console boxes rise to about 120 degrees Celsius when exposed to direct sunlight.

Patent Documents 1 and 2 disclose environmental test apparatuses that reproduce the environment in an automobile.
Each of the environmental test apparatuses disclosed in Patent Documents 1 and 2 includes a lamp that irradiates light to a test object.
The environmental test apparatus disclosed in Patent Document 1 has a lamp chamber partitioned by glass at the top of the test chamber, and the entire lamp is accommodated in the lamp chamber.
In addition, the environmental test apparatus disclosed in Patent Document 1 includes a blower cooling apparatus that cools the lamp. In the environmental test apparatus disclosed in Patent Document 1, a straight tube lamp is employed.
In the environmental test apparatus disclosed in Patent Document 1, the entire lamp is in the lamp chamber, and light emitted from the lamp is irradiated into the test chamber through the glass.

On the other hand, the environmental test apparatus disclosed in Patent Document 2 is provided with a lamp at the top of the test chamber. In Patent Document 2, there are a plurality of lamps, which are referred to as lamp banks.
The environmental test apparatus disclosed in Patent Document 2 has a temperature adjustment unit including a cooling device for cooling the heat generated from the lamp. Furthermore, in the environmental test apparatus disclosed in Patent Document 2, a perforated plate is installed at a position on the same plane as the lamp bank, and the cold air discharged from a position higher than the lamp bank reaches the test chamber before reaching the lamp bank. Preventing you from descending to the floor.

The temperature adjustment unit employed by the environmental test apparatus disclosed in Patent Document 2 adjusts the temperature in the test chamber.
In the environmental test apparatus disclosed in Patent Document 2, the entire lamp is installed in a test chamber. The perforated plate induces constant cold air to flow to the lamp side.
In the environmental test apparatus disclosed in Patent Document 2, the cold air cooled by the temperature control unit is introduced into the test chamber, and most of the air passes through the perforated plate and falls. Also, a certain amount of cool air descends through the lamp bank.
According to the configuration of Patent Document 2, since a part of the cool air descends through the periphery of the lamp, the lamp can be cooled.

JP-A-4-369465 JP 2006-2105015 A

A lamp for reproducing direct sunlight is essential for an environmental test apparatus that reproduces the environment in an automobile. In addition, an environmental test apparatus that reproduces the environment in a car needs to create a high temperature environment.
Here, when a lamp is placed in a high temperature environment to emit light, the life of the lamp tends to be shortened. For example, in a lamp having a structure in which the filament is heated red, it is generally said that the lifetime is determined by the lifetime of the filament.
That is, when the filament is red hot, the filament is sublimated and becomes thinner. Finally, the filament breaks and reaches the end of its life.
When the lamp is exposed to high temperatures, filament sublimation proceeds and the life is shortened.

The environmental test apparatus disclosed in Patent Document 1 uses a rod-shaped lamp, and it is not certain whether or not it has a filament, but it is expected to have an effect of extending the life of the lamp.
However, since the entire lamp is housed in the lamp chamber isolated from the test chamber, the environmental test device disclosed in Patent Document 1 is difficult to replace when the lamp is burned out.
Further, in the environmental test apparatus disclosed in Patent Document 1, since the lamp is cooled as a whole, it is necessary to take heat corresponding to the heat generation amount of the lamp. Therefore, in the environmental test apparatus disclosed in Patent Document 1, it is necessary to employ a cooling apparatus having a considerably large capacity.

On the other hand, the environmental test apparatus disclosed in Patent Document 2 has a lamp in the test chamber. A part of the cold air passes through the lamp part and flows to the DUT side.
Here, in order to reproduce the environment inside the automobile, it is necessary to maintain the inside of the test room at about 80 degrees Celsius. In the environmental test apparatus disclosed in Patent Document 2, the cooling device is mainly intended to prevent the temperature in the test chamber from rising excessively, and a part of the cold air is caused to flow to the lamp side. It's just a thing.
Therefore, according to the configuration of Patent Document 2, it is questionable whether the lamp can be cooled effectively. Further, in order to sufficiently cool the lamp, it is necessary to supply a considerable amount of cool air to the lamp, and there is a possibility that the temperature in the test chamber cannot be maintained at a high temperature.
Furthermore, in the environmental test apparatus disclosed in Patent Document 2, as in Patent Document 1, it is necessary to employ a cooling device having a considerably large capacity.

The present invention pays attention to the above-mentioned problems of the prior art, and an object of the present invention is to improve an environmental test apparatus provided with a lamp that irradiates light to a device under test and to provide an environmental test apparatus in which the lamp is less likely to fail. Is.
Moreover, this invention makes it a subject to provide the lamp unit which can solve the same subject.

  The present applicant has prototyped an environmental test apparatus that reproduces the environment inside the automobile. In the prototype environmental test equipment, the entire lamp was installed in the test room. The prototype environmental test apparatus may need to be replaced frequently because the lamp may fail early depending on the test conditions.

  When the temperature of the lamp rises or lowers, the present inventors create a fine gap in the bulb wire introduction part due to the difference in thermal expansion coefficient between the bulb and the conductive wire, and the air in the test chamber enters through the fine gap. , Thought that it may lead to lamp failure.

  The invention according to claim 1, which has been developed based on the above knowledge, includes a test chamber in which a desired environment can be created and a test object is placed, and a lamp that irradiates the test object with light. An environmental test apparatus having a function of irradiating the surface of the test object with light in a desired environment, and having a cooling chamber isolated from the test room, the lamp including a power supply unit, And a light source that feeds light into the bulb from the power feeding portion and emits light at least from a tip surface of the bulb. At least the power feeding portion of the lamp is disposed in a cooling chamber, and at least the bulb of the lamp The tip surface is outside the cooling chamber and is exposed to the test chamber.

Here, “light” is a concept including infrared light, visible light, and ultraviolet light.
The lamp preferably has a bulb in which a filament is enclosed and, like an infrared lamp, supplies power to the filament from the power supply unit to emit light from the filament, but may use discharge.
In the environmental test apparatus of the present invention, there is a cooling chamber, and the cooling chamber is isolated from the test chamber. “Isolated from the test chamber” may mean that the cooling chamber is isolated from the test area in the test chamber.
In the environmental test apparatus of the present invention, at least the power supply unit of the lamp is disposed in the cooling chamber, and the electric wire introducing unit of the bulb is in the cooling chamber and is not easily affected by the temperature of the test chamber. Therefore, a gap is hardly generated in the electric wire introduction part, and the lamp is less likely to fail.

  According to a second aspect of the present invention, the lamp is an infrared lamp, and is an environmental test apparatus having a function of increasing the temperature of the surface of the test object by irradiating the surface of the test object with infrared light. The environmental test apparatus according to claim 1, further comprising a base part in which a power feeding part is formed, wherein at least the base part is disposed in the cooling chamber.

The lamp employed in the environmental test apparatus of the present invention is an infrared lamp, and the emitted light is infrared light. Therefore, the temperature of the surface of the test object can be raised.
In the environmental test apparatus of the present invention, at least the base portion of the lamp is disposed in the cooling chamber. Therefore, the electric wire introduction part of the valve is not easily affected by the temperature of the test chamber.

  According to a third aspect of the present invention, there is provided an environmental test apparatus according to the first or second aspect, further comprising a cooling unit, wherein the cooling chamber is cooled by the cooling unit.

The cooling means is preferably provided with a refrigerator, but may be one that maintains the temperature in the cooling chamber at room temperature by introducing outside air.
In the environmental test apparatus of the present invention, since the temperature rise in the cooling chamber is suppressed by the cooling means, the temperature change of the electric wire introduction part of the bulb is relatively small, and the failure of the lamp is small.

  According to a fourth aspect of the present invention, the cooling means has a ventilating means, and air in the cooling chamber is replaced by the ventilating means to cool the cooling chamber. It is.

  In the environmental test apparatus of the present invention, since the air in the cooling chamber is replaced by the cooling means, it is difficult for heat to stay in the cooling chamber.

  According to a fifth aspect of the present invention, there is a cooling means outside the cooling chamber, the cooling chamber and the cooling means are connected in an annular shape, and air circulates between the cooling chamber and the cooling means. The environmental test apparatus according to any one of the above.

  According to the present invention, the cooling chamber can be efficiently cooled.

  A sixth aspect of the present invention is the environmental test apparatus according to any one of the first to fifth aspects, wherein the cooling chamber is cooled by the cooling means when the lamp is turned on.

  According to the present invention, since the cooling chamber is not wastedly cooled, efficiency is high.

  The invention described in claim 7 is the environmental test apparatus according to any one of claims 1 to 6, wherein the pressure in the cooling chamber is a positive pressure relative to the pressure in the test chamber.

  According to the present invention, high-temperature air in the test chamber is unlikely to enter the cooling chamber side. Therefore, the temperature in the cooling chamber can be maintained below a certain level.

  According to an eighth aspect of the present invention, the lamp has a base portion in the power supply portion, and the bulb has a shape in which the diameter of the base portion is small and the distal end side gradually expands to form a bulging portion. Is a light emitting surface, and there is an opening for mounting the lamp on the test chamber side of the cooling chamber, and the opening has a sealing member in contact with the side of the bulb of the lamp. Is provided with a socket that fits into the base, and the lamp base can be attached to the cooling chamber by inserting the base part of the lamp into the opening from the test chamber side and fitting the base part into the socket. 8. The environmental test apparatus according to claim 1, wherein in a state in which the lamp is mounted, the side surface of the bulb of the lamp is in close contact with the sealing member and the gap between the bulb and the opening is sealed. It is.

In the environmental test apparatus of the present invention, the lamp has a thin base portion and a wide front light emitting area. In the present invention, there is an opening for mounting the lamp on the test chamber side of the cooling chamber, and a socket for fitting with the base is provided at the back of the opening. Therefore, the lamp cap can be mounted by inserting a lamp cap from the test chamber side into the opening.
In addition, the cooling chamber opening has a sealing member in contact with the side surface of the lamp bulb. When the lamp is mounted, the side surface of the lamp bulb is in close contact with the sealing member to seal the gap between the bulb and the opening. The In the environmental test apparatus of the present invention, airtightness between the cooling chamber and the test chamber is ensured. Therefore, there is little concern that the cool air in the cooling chamber leaks to the test chamber side, lowers the temperature of the test chamber, or causes temperature variations in the test chamber.
It is also possible to prevent hot air in the test chamber from flowing into the cooling chamber.

  The housing may be independent from the test chamber, the cooling chamber may be provided in the housing, and the housing may be disposed in the test chamber.

  The invention relating to the lamp unit is a lamp unit that is arranged in a test chamber of an environmental test apparatus and irradiates light to a test object in the test chamber, and includes a housing and a lamp, and the cooling chamber is provided in the housing The lamp has a power supply unit and a bulb, and supplies power from the power supply unit into the bulb to emit light, and emits light at least from the tip surface of the bulb. At least the power supply unit of the lamp is in the cooling chamber. It is arranged, and at least a tip end face of the bulb of the lamp is exposed to the outside of the cooling chamber.

By installing the lamp unit of the present invention in a test room of an existing environmental test apparatus or an existing environmental test apparatus, light can be irradiated to a device under test in a desired environment.
Further, according to the present invention, the lamp is unlikely to fail.

  According to the environmental test apparatus and the lamp unit of the present invention, the lamp that irradiates the test object with light is unlikely to fail.

It is sectional drawing which represented notionally the environmental test apparatus of this embodiment. It is a cross-sectional perspective view of the cooling chamber and lamp | ramp explaining the usage method of the environmental test apparatus of FIG. It is a partially exploded cross-sectional perspective view of the cooling chamber of the environmental test apparatus of FIG. It is sectional drawing of the cooling chamber of the environmental test apparatus of FIG. 1, and the side view of a lamp | ramp. It is sectional drawing of the lamp insertion port vicinity of the cooling chamber of the environmental test apparatus of FIG. It is sectional drawing of the lamp | ramp employ | adopted with the environmental test apparatus of FIG. It is sectional drawing which represented notionally the environmental test apparatus of other embodiment of this invention conceptually. It is sectional drawing which represented notionally the environmental test apparatus of other embodiment of this invention notionally.

Embodiments of the present invention will be further described below.
The environmental test apparatus 1 of the present embodiment artificially creates an environment such as an outdoor environment, a car interior, a house in a closed state, a warehouse in a closed state, and the like. The lamp group 30 is combined with the apparatus.

  The environmental test apparatus 1 of this embodiment has the heat insulation tank 3 covered with the heat insulation wall 2, as shown in FIG. The inside of the heat insulating tank 3 is divided into a test chamber 5, an air conditioning unit 15, and a cooling chamber 20. If it demonstrates centering on the test chamber 5, as shown in FIG. 1, the cooling chamber 20 exists in the upper part of the test chamber 5, and the air-conditioning part 15 exists in the horizontal direction back | inner side of the test chamber 5. FIG.

The heat insulation tank 3 is a housing | casing covered with the heat insulation wall 2, as shown in FIG. In the heat insulating tank 3, there is a partition wall 22 provided in the vertical direction, and the inside of the heat insulating tank 3 is partitioned into the test chamber 5 and the air conditioning unit 15 by the partition wall 22.
The test chamber 5 is a space in which the device under test 18 is installed. An opening / closing door 26 is provided in front of the test chamber 5.

The air conditioning unit 15 is a space that forms an air conditioning ventilation path that communicates with the test chamber 5, and includes an air conditioning device 17 and a blower 10 inside. The air conditioner 17 includes a humidifying device 6, a cooling device 7, and a heating device 8.
The air conditioning unit 15 is formed in a part of the heat insulating tank 3 and communicates with the test chamber 5 at two locations of the air blowing unit 16 and the air introducing unit 25.
Therefore, when the blower 10 is activated, the air in the test chamber 5 is introduced from the air introduction unit 25 into the air conditioning unit 15. Then, the air conditioning unit 15 enters a ventilation state, air contacts the air conditioning device 17, heat exchange and humidity adjustment are performed, and the adjusted air is blown out from the air blowing unit 16 into the test chamber 5.
A temperature sensor 12 and a humidity sensor 13 are provided in the vicinity of the air blowing portion 16 of the air conditioning unit 15.
When the environmental test apparatus 1 is used, the air conditioner is operated so that the blower 10 is operated to bring the air-conditioning unit 15 into a ventilation state, and the detected values of the temperature sensor 12 and the humidity sensor 13 approach the temperature and humidity of the set environment. 17 is controlled.

  That is, by operating the blower 10, the air in the test chamber 5 is introduced from the air introduction unit 25 to the air conditioning unit 15, and the temperature and humidity are adjusted by passing through the air conditioning device 17 in the air conditioning unit 15. Then, the air whose temperature / humidity is adjusted is returned from the air blowing section 16 to the test chamber 5, and an environment of desired temperature / humidity is created in the test chamber 5.

The cooling chamber 20 is installed in the upper part of the test chamber 5 as shown in FIG. The cooling chamber 20 and the test chamber 5 are partitioned by a ceiling wall 32. It is desirable that the ceiling wall 32 has a heat insulating structure.
The ceiling wall 32 is provided with a plurality of lamp insertion openings 33 as shown in FIGS. The lamp insertion port 33 is an opening in which the lamp 31 is mounted.
As shown in FIGS. 3, 4, and 5, the lamp insertion opening 33 of the ceiling wall 32 has a sealing member mounting seat 37, and the sealing member mounting seat 37 is provided with a sealing member 36.
As shown in FIGS. 3 and 4, the sealing member mounting seat 37 is a cylindrical body having a short overall length that protrudes downward from the ceiling wall 32, has a through hole 40 at the center, and has a flange 38 at the tip. Is formed. That is, the sealing member mounting seat 37 is provided with a flange 38 at the tip of the cylindrical shaft portion 42.

The sealing member 36 is made of a resin having high heat resistance and flexibility, such as silicon resin.
The sealing member 36 has a shape that completely covers the sealing member mounting seat 37.
The sealing member 36 is made of a thin skin as shown in FIG. 4 and has a hollow inside. The cross-sectional shape of the sealing member 36 is such that its inner surface is in contact with the sealing member mounting seat 37 as shown in FIG.
Specifically, it has a cylindrical portion 45 that is in close contact with the cylindrical shaft portion 42 of the sealing member mounting seat 37 and a flange surrounding portion 46 that covers the flange 38.
An opening 48 is provided on the surface of the flange surrounding portion 46. The diameter of the opening 48 is smaller than the opening diameter of the through hole 40 of the sealing member mounting seat 37.

As described above, the ceiling wall 32 is provided between the cooling chamber 20 and the test chamber 5, and the ceiling wall 32 has no substantial opening except for the lamp insertion port 33 described above. Isolated from test chamber 5.
Inside the cooling chamber 20 and behind the opening of the lamp insertion port 33, a socket 35 is arranged as shown in FIGS. 2, 3, 4, and 5.
In the present embodiment, the socket 35 is attached to the ceiling wall 32 by a support member 43 as shown in FIG.
However, the socket 35 itself is separated from both the ceiling wall 32 and the heat insulating tank 3 as shown in the drawings.

  As shown in FIG. 1, the cooling chamber 20 has two air introduction ports 50 a and 50 b and an exhaust port 51. In the present embodiment, the two air introduction ports 50 a and 50 b are on both sides of the cooling chamber 20, and the exhaust port 51 is in the center of the cooling chamber 20.

There is a cooling device (cooling means) 52 outside the heat insulating tank 3.
The cooling device 52 includes a cooler (evaporator of the refrigerator) 53, a blower (ventilating means) 55, and a filter 57 inside.
The cooling device 52 has an outside air introduction port 70, an inside air introduction port 71, and an exhaust port 72.
As shown in FIG. 1, an outside air introduction port 70 and an inside air introduction port 71 are provided on the suction side of the blower 55. A filter 57 is provided in the vicinity of the outside air introduction port 70, and an inside air introduction port 71 is provided between the filter 57 and the suction side of the blower 55.
A cooler 53 is provided on the discharge side of the blower 55, and an exhaust port 72 is provided on the downstream side thereof.

As shown in FIG. 1, the exhaust port 51 of the cooling chamber 20 is connected to the inside air introduction port 71 of the cooling device 52, and the exhaust port 72 of the cooling device 52 is branched to the two air introduction ports 50 a and 50 b of the cooling chamber 20. It is connected. As a result, two annular air passages are formed between the cooling device (cooling means) 52 and the cooling chamber 20.
By starting the blower 55 of the cooling device 52, the air in the cooling chamber 20 circulates through the two annular air passages including the cooling device 52. As a result, the inside of the cooling chamber 20 is ventilated and the temperature in the cooling chamber 20 is lowered.
In this embodiment, since the outside air introduction port 70 is provided in the cooling device 52 and the outside air introduction port 70 is on the suction side of the blower 55, the outside air is added to the circulation air volume, and the inside of the cooling chamber 20 is always in the normal state. It becomes a pressure tendency.

In addition, a temperature sensor 56 is provided in the cooling chamber 20, and when the temperature in the cooling chamber 20 exceeds a certain temperature, the refrigerator is started, and the cooling device 52 is activated by the cooler (evaporator of the refrigerator) 53. The passing air is cooled, the air is supplied to the cooling chamber 20, and the temperature in the cooling chamber 20 is kept below a certain level.
Further, in the present embodiment, the driving of the cooling device 52 is interlocked with the activation of the lamp 31, and the inside of the cooling chamber 20 is cooled by the cooling device (cooling means) 52 when the lamp 31 is turned on.
When the lamp 31 is turned off, the cooling device 52 also stops.

The lamp 31 is, for example, a lamp called an eye lamp (registered trademark), and is a known reflector lamp that emits infrared light.
As shown in FIG. 6, the lamp 31 includes a flask-like bulb 58 made of glass and a base portion (power feeding portion) 60 in which a screw is formed.
An inert gas is sealed inside the valve 58.
The shape of the bulb 58 is the same as that of a known lamp, the diameter of the cap portion 60 is small, and the tip side gradually increases in diameter to constitute a bulging portion. A reflective paint 63 is applied to the inner surface of the bulb 58 except for the front surface, and the tip surface 65 of the bulb is a light emitting surface.

A filament 61 is provided inside the bulb 58, and an internal conductive wire 62 connected to the filament 61 passes through the bulb 58 to become an external conductive wire 67 and is connected to the base portion 60.
When power is supplied to the base part (power feeding part) 60, the filament 61 of the bulb 58 becomes red hot, generates infrared light (infrared rays), and light is irradiated from the tip surface 65 of the bulb.

In the present embodiment, as shown in FIG. 2, the lamp 31 is inserted from the test chamber 5 side into the lamp insertion port 33 of the ceiling wall 32 from the base portion 60 side, and is connected to the socket 35 installed in the cooling chamber 20. 60 is fitted.
FIG. 5 is a cross-sectional view of the state in which the lamp 31 is mounted. The entire cap portion 60 and about two thirds of the bulb 58 are in the cooling chamber 20.
On the other hand, about one third of the valve 58 including the distal end surface 65 of the valve 58 is exposed outside the cooling chamber 20.

As described above, the lamp insertion port 33 has the sealing member 36, and the diameter of the opening 48 of the flange surrounding portion 46 of the sealing member 36 is smaller than the diameter of the through hole 40 of the sealing member mounting seat 37. Therefore, as shown in FIG. 5, the opening end of the opening 48 of the sealing member 36 is in close contact with the side surface of the bulb 58 of the lamp 31, and the gap between the bulb 58 and the lamp insertion port 33 is sealed.
Therefore, in a state where the lamp 31 is mounted, substantially airtightness is ensured between the cooling chamber 20 and the test chamber 5.

Next, functions of the environmental test apparatus 1 will be described.
The environmental test apparatus according to the present embodiment reproduces the environment inside the vehicle when parked under a hot sun, for example.
As a preparatory stage for the environmental test, for example, an automobile interior such as an instrument panel is used as the test object 18, and the test object 18 is installed in the test chamber 5.
Further, a non-contact type temperature sensor 66 is installed in the vicinity of the test object 18, and the surface temperature of the test object 18 is detected by the temperature sensor 66.

And the air blower 10 and the air conditioner 17 in the air-conditioning part 15 are driven, and the inside of the test chamber 5 is adjusted to a high temperature environment. Specifically, the air blower 10 is operated to bring the air conditioning unit 15 into a ventilation state, and the air conditioner 17 is controlled so that the detected values of the temperature sensor 12 and the humidity sensor 13 approach the temperature and humidity of the set environment.
For example, the air conditioner 17 is controlled so that the temperature in the test chamber 5 becomes the same temperature (for example, 80 degrees Celsius) as the temperature in the vehicle when parked under a hot sun.
Moreover, since the environmental test apparatus 1 of this embodiment is equipped with the humidification apparatus 6 and has a humidification function, the inside of the test chamber 5 can be made into a high humidity environment as needed.

  When the environment in the test chamber 5 is ready, each lamp 31 is turned on and infrared light is emitted to the device under test 18 to raise the surface temperature of the device under test 18. At the same time, the temperature detected by the temperature sensor 66 provided in the vicinity of the DUT 18 is monitored, and the illuminance, lighting number, lighting time, etc. of each lamp 31 are controlled so that the surface of the DUT 18 reaches the target temperature. .

In the environmental test apparatus 1 of the present embodiment, the lamp 31 is exposed in the test chamber 5 on the tip surface 65 side of the bulb 58.
The lamp 31 is a reflector lamp and emits light only from the front end surface 65 toward the front, and no light is emitted from the side surface or the back side of the bulb 58. In the environmental test apparatus 1 according to the present embodiment, a part of the side surface of the bulb 58 is hidden behind the cooling chamber 20, but as described above, the lamp 31 to be used emits light only from the tip surface 65. Therefore, light is radiated to the test chamber 5 side without waste and is applied to the device under test 18.
In the lamp 31, the tip surface 65 becomes the highest temperature, but since the high temperature portion is exposed in the test chamber 5, the heat generation of the lamp 31 contributes to maintaining the temperature in the test chamber 5 at a high temperature. The power consumption of the entire device 1 can be reduced.

  As described above, according to the environmental test apparatus 1 of the present embodiment, since the tip surface of the valve 58 is outside the cooling chamber 20, the inside of the test chamber 5 is heated by the temperature of the surface of the valve 58. Contribute to maintenance.

  Further, the cooling device 52 is activated in conjunction with the lighting of the lamp 31, and the blower 55 is driven to ventilate the cooling chamber 20. When the temperature in the cooling chamber 20 rises, the refrigerator is started, the phase change refrigerant is supplied to the cooler 53, the surface temperature of the cooler 53 is lowered, and the air supplied from the cooling device 52 to the cooling chamber 20 The temperature of is lowered.

Therefore, the temperature of the base part (power feeding part) 60 of the lamp 31 does not become excessively high, and a gap due to the difference in the thermal expansion coefficient between the bulb 58 and the conductive wires 62 and 67 hardly occurs. The air is difficult to flow in. Therefore, in the environmental test apparatus 1 of the present embodiment, the life of the lamp 31 is long.
Further, when the lamp 31 breaks down, the portion exposed to the test chamber 5 of the lamp 31 can be rotated by hand to cancel the fitting with the socket 35 and the lamp 31 can be removed. Can be replaced.
As described above, in the environmental test apparatus 1 according to the present embodiment, the front end surface of the bulb 58 of the lamp 31 is outside the cooling chamber 20 and exposed in the test chamber 5. Therefore, the lamp can be removed from the test chamber 5 side, and the lamp can be easily replaced.

  In the present embodiment, the highest temperature portion of the lamp 31 (the tip surface 65 of the bulb 58) is outside the cooling chamber 20, so the temperature of the cooling chamber 20 is not so high in the first place. A small object is enough. Also, less power is consumed.

  As described above, in the environmental test apparatus 1 according to the present embodiment, the cooling chamber 20 has only a part of the lamp 31, and the tip portion of the bulb 58 that has the highest temperature is exposed to the test chamber 5 side. Therefore, compared with the case where the whole lamp | ramp 31 is put in the cooling chamber 20, the amount of cold heat required to maintain the temperature of the cooling chamber 20 is enough.

  In the present embodiment, since the inside of the cooling chamber 20 is maintained at a positive pressure tendency with respect to the test chamber 5, high-temperature air in the test chamber 5 is not easily mixed into the cooling chamber 20. Therefore, the capacity of the refrigerator is sufficient to simply remove the heat in the vicinity of the cap portion 60 of the lamp 31, and is small in size and consumes less power.

In embodiment described above, what has a refrigerator was illustrated as the cooling device (cooling means) 52 which cools the cooling chamber 20. However, as described above, the temperature of the cooling chamber 20 does not become so high in the first place, and therefore it is possible to have a configuration having only the ventilation fan 81 as in the environmental test apparatus 80 shown in FIG.
Since the other configuration of the environmental test apparatus 80 shown in FIG. 7 is the same as that of the above-described embodiment, the same reference numerals are assigned to the same members, and duplicate descriptions are omitted.

Further, in the embodiment described above, the cooling chamber 20 is provided in a part of the heat insulating tank 3 and the inner wall of the heat insulating tank 3 is a part of the cooling chamber 20, but the cooling chamber is similar to the environmental test apparatus 82 shown in FIG. 20 and the lamp 31 may be independent lamp units 85.
In the environmental test apparatus 82 shown in FIG. 8, an independent box (housing) 83 is installed in the test chamber 5 to form the cooling chamber 20. In this case, it is desirable that the box 83 has a heat insulating structure.
The lamp unit 85 shown in FIG. 8 is arranged in the test chamber 5 and has a function of irradiating the DUT 18 with light. The lamp unit 85 includes a box (housing) 83 and a lamp 31, and the cooling chamber 20 is in the box (housing) 83.
In the lamp 31 attached to the box 83, the tip portion of the bulb 58 is exposed from the box 83.

The environmental test apparatus 82 shown in FIG. 8 is a unit in which the cooling chamber 20 and the lamp 31 are unitized, and an independent box (housing) 83 is provided in the test chamber 5, and the inside of the box 83 is the cooling chamber. Since it is the same as that of the above-described embodiment except that it is 20, the same number is assigned to the same member, and redundant description is omitted.
The lamp unit 85 can be attached to an existing environmental test apparatus or an existing environmental test apparatus.

In the embodiment described above, an infrared lamp is used as the lamp 31, but an ultraviolet lamp or a lamp that emits visible light may be mixed in the lamp group 30 in order to make it closer to sunlight.
All may be replaced with an ultraviolet lamp or a lamp that emits visible light.

In the embodiment described above, the lamp 31 has a turn-in type, but may have another structure such as a plug-in type.
In the embodiment described above, the pressure in the cooling chamber 20 is adjusted to be higher than the pressure in the test chamber 5, but the present invention is not limited to this configuration, and both pressures are equal. The test chamber 5 may be higher.

  In the embodiment described above, the sealing member 36 is provided in the lamp insertion port 33. However, the shape and mounting position of the sealing member 36 are not limited to the embodiment.

The present invention does not deny a configuration in which the sealing member 36 is omitted.
In the embodiment described above, the humidifying device 6, the cooling device 7, and the heating device 8 are provided as the air conditioner 17, but it is not always necessary to include all of them. For example, it may not have a humidifying function.
In the embodiment described above, the inside of the heat insulating tank 3 is partitioned into the test chamber 5 and the air conditioning unit 15, but the heat insulating tank constituting the test chamber 5 and the air conditioning unit may be separate.

1, 80, 82 Environmental test device 5 Test chamber 15 Air conditioning unit 20 Cooling chamber 31 Lamp 32 Ceiling wall 33 Lamp insertion port 35 Socket 36 Sealing member 37 Sealing member mounting seat 52 Cooling device (cooling means)
55 Blower (Ventilation means)
60 Base part (Power supply part)
61 Filament 65 Tip surface 83 Box (housing)
85 Lamp unit

Claims (10)

It has a test chamber in which a desired environment can be created and the DUT is placed, and a lamp that irradiates the DUT with light. The DUT is placed on the surface of the DUT in the desired environment. In environmental test equipment with the function of irradiating light,
There is a cooling chamber isolated from the test chamber,
The lamp has a power feeding unit and a bulb, and feeds light into the bulb from the power feeding unit to emit light, and emits light from at least the front end surface of the bulb,
An environmental test apparatus, wherein at least a power feeding portion of the lamp is disposed in a cooling chamber, and at least a tip end surface of the bulb of the lamp is outside the cooling chamber and exposed to the test chamber. The lamp is an infrared lamp, and is an environmental test apparatus having a function of increasing the temperature of the surface of the test object by irradiating the surface of the test object with infrared light,
The environmental test apparatus according to claim 1, wherein the lamp has a base part in which a power feeding part is formed, and at least the base part is disposed in the cooling chamber.   The environmental test apparatus according to claim 1, further comprising a cooling unit, wherein the cooling chamber is cooled by the cooling unit.   The environmental test apparatus according to claim 3, wherein the cooling unit includes a ventilation unit, and the air in the cooling chamber is replaced by the ventilation unit to cool the cooling chamber.   5. The environmental test apparatus according to claim 1, wherein cooling means is provided outside the cooling chamber, the cooling chamber and the cooling means are connected in a ring shape, and air circulates between the cooling chamber and the cooling means. .   6. The environmental test apparatus according to claim 1, wherein the cooling chamber is cooled by a cooling means when the lamp is turned on.   The environmental test apparatus according to claim 1, wherein the pressure in the cooling chamber is a positive pressure relative to the pressure in the test chamber. The lamp has a base part in the power supply part, and the shape of the bulb is such that the diameter of the base part is small, the tip side gradually expands to form a bulging part, and the tip surface of the bulb is a light emitting surface,
There is an opening for mounting the lamp on the test chamber side of the cooling chamber, and the opening has a sealing member in contact with the side surface of the bulb of the lamp. A socket is provided,
The lamp base can be attached to the cooling chamber by inserting the base of the lamp into the opening from the test chamber side and fitting the base into the socket.
8. The environmental test apparatus according to claim 1, wherein in a state in which the lamp is mounted, the side surface of the bulb of the lamp is in close contact with the sealing member and the gap between the bulb and the opening is sealed. .   9. The apparatus according to claim 1, further comprising a housing independent of the test chamber, wherein the cooling chamber is provided in the housing, and the housing is disposed in the test chamber. The environmental test apparatus described in 1. A lamp unit that is arranged in a test chamber of an environmental test apparatus and irradiates light to a test object in the test chamber,
A housing and a lamp;
There is a cooling chamber in the housing,
The lamp has a power feeding unit and a bulb, and feeds light into the bulb from the power feeding unit to emit light, and emits light from at least the front end surface of the bulb,
At least a power feeding section of the lamp is disposed in a cooling chamber, and at least a tip end surface of the bulb of the lamp is exposed outside the cooling chamber.

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