JP7428566B2 - Measuring equipment and dust-proofing methods for measuring equipment - Google Patents

Description

The present invention relates to a measuring device and a dust-proofing method for the measuring device, and in particular to collimating display devices such as LED backlights, LCDs, and OLEDs (Organic Light Emitting Diodes) in a non-contact manner to determine their spectral distribution, brightness, and chromaticity. - Concerning measuring devices used to measure and manage correlated color temperature, etc., and dust-proofing methods for measuring devices.

BACKGROUND ART Conventionally, electronic devices such as spectrophotometers and projectors described in Patent Documents 1 to 3 have been equipped with heat-generating components such as lamps, control boards, and electric converters.
Patent Document 1 describes a ``reference light source for calibration that enables the user to calibrate the wavelength and sensitivity of a spectrophotometer, which could previously only be done at the manufacturer's factory or service base.''"A calibration method using a calibration method and an operation program for a calibration system" (paragraph 0007).
In Patent Document 2, "A plurality of axial fans 61 and 62 are arranged adjacent to each other near an exhaust port, and the airflow is rectified in one direction and then discharged from the exhaust port to the outside of the casing 10." At the same time, it functions to prevent the airflow after exhaust from flowing back through the exhaust port. "Equipment" (summary).
Patent Document 3 discloses that ``a lamp, a lamp house that houses the lamp, and a power supply cover that houses a power source and ballast are arranged in the direction of the cooling air outlet of a fan for cooling the power source or in the opening surface of the cooling air intake port of the power source. ``In contrast, in a projector device that is not arranged in a straight line, it is characterized by having a duct that bypasses cooling air between the lamp house and the power supply cover.'' (Summary), describes scissors with a power assist function. .

Patent No. 4400448 Japanese Patent Application Publication No. 2006-98734 Japanese Patent Application Publication No. 2014-48354

Generally, a measuring device used for measuring and managing spectral distribution, brightness, chromaticity, correlated color temperature, etc. includes an electrical system including a motor, a linear array sensor, etc., and an optical system including a lens, a diffraction grating, etc. Therefore, it is assumed that dust, dirt, dust, etc. from the outside air may fly towards the optical system (e.g., scatter, float, move, etc.), and may adhere to or cloud the optical system such as lenses and mirrors. In some cases, the light may float in the optical path. In such a case, the output may fluctuate or the accuracy may be affected, and it may be difficult or impossible to precisely measure and manage spectral distribution, brightness, chromaticity, correlated color temperature, etc.

In view of the above points, it is an object of the present invention to provide a measuring device and a dustproofing method for a measuring device that can accurately measure and manage spectral distribution, brightness, chromaticity, correlated color temperature, and the like.

According to the first solution of the present invention,
a casing that has a first space inside that includes an electrical system having a heat generating part and an optical system for acquiring measurement light; and a second space that is isolated and partitioned from the first space;
It has an L-shaped plate, one side of the L-shaped plate is in contact with the heat generating part of the first space, and the other side of the L-shaped plate is in contact with the second space. a heat conductive part arranged to conduct heat from the heat generating part in the first space to the second space;
a cooling unit provided inside the second space on the other side of the L-shaped plate of the heat conduction unit ;
a sealing member for partitioning and sealing the second space from the first space;
A first and a second space are provided on both sides of a side surface of the casing forming a partition of the second space, and are configured such that air vented to the second space flows in a straight line or a substantially straight line from one side to the other. 2 vents and
A fan provided in one or both of the first and second vents;
Equipped with
The other side of the L-shaped plate of the heat conduction part is in contact with the first space outside the second space, and the seal member surrounds and seals the cooling part,
The seal member covers a partition forming the second space in which the cooling unit is arranged, partitions and seals the first space from the casing, and separates the first space from the second space. Seal the partition of the space,
Heat generated from the heat generating part is absorbed from one side of the L-shaped plate of the heat conduction part, the heat is conducted to the sealed second space, and the heat conduction part is attached to the other side of the L-shaped plate. applying wind from the fan to the cooled cooling unit to cool it;
There is provided a measuring device characterized by the following .

According to the second solution of the present invention,
A method for preventing dust of a measuring device,
The measuring device is
a casing that has a first space inside that includes an electrical system having a heat generating part and an optical system for acquiring measurement light; and a second space that is isolated and partitioned from the first space;
An L-shaped plate is provided, one side of the L-shaped plate is in contact with the heat generating part of the first space, and the other side of the L-shaped plate is arranged in contact with the second space. a heat conducting part for conducting heat from the heat generating part in the first space to the second space;
a cooling unit provided inside the second space on the other side of the L-shaped plate of the heat conduction unit;
a sealing member for partitioning and sealing the second space from the first space;
A first and a second space are provided on both sides of a side surface of the casing forming a partition of the second space, and are configured such that air vented to the second space flows in a straight line or a substantially straight line from one side to the other. 2 vents and
A fan provided in one or both of the first and second vents;
Equipped with
The other side of the L-shaped plate of the heat conduction part is in contact with the first space outside the second space, and the seal member surrounds and seals the cooling part,
The seal member covers a partition forming the second space in which the cooling unit is arranged, partitions and seals the first space from the casing, and separates the first space from the second space. Seal the partition of the space,
Heat generated from the heat generating part is absorbed from one side of the L-shaped plate of the heat conduction part, the heat is conducted to the sealed second space, and the heat conduction part is attached to the other side of the L-shaped plate. applying wind from the fan to the cooled cooling unit to cool it;
There is provided a dustproof method for a measuring device characterized by the following.

As described above, the present invention can provide a measuring device and a dustproof method for a measuring device that can accurately measure and manage spectral distribution, brightness, chromaticity, correlated color temperature, and the like.

FIG. 1 is a configuration diagram (perspective view) of a measuring device according to a first embodiment. FIG. 2 is a block configuration diagram of a measuring device. FIG. 3 is a configuration diagram (perspective view) of a measuring device according to a second embodiment.

A. overview

In the measuring device of the present invention and/or this embodiment, for example, a space (part, region, area) in which a heat generating part (heat generating component) is arranged is sealed with a sealing member, etc., and air is circulated in a straight line (straight line) within the space. ) or in a substantially straight line (straight line).
According to the measuring device of the present invention and/or the present embodiment, for example, a space in which a cooling unit for cooling heat-generating components such as an electric converter is arranged can be The vents installed on both sides of the device main body that separate the space are isolated from the space where the system is located, and sealed with a sealing member, etc., and the positions of the vents provided on both sides of the device body that partition the space are the same or almost the same ( (target position), so that the air to be vented can proceed (flow) in a straight line (straight line) or approximately straight line (straight line) from one vent (intake port) to the other vent (exhaust port). . This configuration prevents dust, dirt, dust, etc. (hereinafter sometimes referred to as dust, etc.) from flying toward the optical system (for example, scattering, floating, moving, etc.), and prevents the lenses and mirrors from flying toward the optical system. - The optical system, such as the optical path, is not contaminated or affected, and spectral distribution, brightness, chromaticity, and correlated color temperature can be precisely measured and managed.

The measuring device and the dust-proofing method for the measuring device of the present invention and/or this embodiment can be applied to, for example, a spectrophotometer or a spectroradiance meter, and are not limited to these, but can be applied to various types of devices including an optical system and an electrical system. The present invention can be provided to a measuring device and a dustproof method for a measuring device.

B. Measuring device according to the first embodiment and its dust-proofing method

FIG. 1 shows a configuration diagram (perspective view) of a measuring device according to a first embodiment.
The measuring device of this embodiment is applied to a spectroradiometer as an example, but is not limited thereto. The measuring device of the present invention and/or this embodiment mainly collimates display devices such as LED backlights, LCDs, and OLEDs (Organic Light Emitting Diodes) in a contact or non-contact manner, and measures their spectral distribution, brightness, and color. Used to measure and manage color temperature and correlated color temperature. In addition, since it enables high-speed measurement compared to conventional diffraction grating drive methods, it is expected that it will be used more frequently for general measurement needs, and as a master instrument for luminance and chromaticity management of color luminance meters. It is expected to be used as a measuring instrument in various research institutions.

The measuring device is isolated by partitioning the inside of a housing 10 into a first space (section, region, area) 1 and a second space (section, region, area) 2. The second space 2 is sealed and isolated or partitioned from the first space 1. As a partition (partition plate) for the second space 2, for example, a part of the surface may be used together with a surface (plate) that forms the casing 10, or a surface (partition plate) other than the casing 10 may be used. It is also possible to form the second space 2 with a surface (plate) and double the surface (plate) forming the casing 10.

The first space 1 includes an electrical system 12 having a heat generating part 121 (heat generating component) mainly for acquiring, analyzing, managing, etc. data from measurement light, and an optical system 12 mainly for acquiring measurement light, etc. system 11 (see FIG. 2 and its explanation below).
The heat conduction part 3 has one side in contact with a heat generating part 121 (e.g., a heat generating component) of the electrical system 12 in the first space 1, and the other side in an isolated second space 2, which generates heat. Conducts heat generated from the portion 121 (see later description regarding the heat generating portion 121). In this embodiment, an L-shaped heat conduction plate is used as an example of the heat conduction section 3.
A cooling section 4 is provided inside the second space 2 on the other side of the heat conducting section 3 . Although a heat sink having an appropriately shaped shape can be used for the cooling unit 4, other appropriate cooling members can also be used.

The seal member 5 isolates or partitions the second space 2 from the first space 1 and seals it (see thick line in the figure). For example, the sealing member 5 covers a partition (partition plate) that forms the second space 2 in which the cooling unit 4 is arranged. Furthermore, the partition (partition plate) between the first space 1 and the casing 10 and the partition (partition plate) between the first space 1 and the second space 2 are sealed with a sealing member 5 . As the sealing member 5, for example, polyethylene, proproprene, cushioning material, double-sided tape (for example, waterproof double-sided tape, etc.), etc. can be used. Note that the figure shows a case where the L-shaped heat conductive plate used as an example of the heat conductive part 3 is in contact with the outside of the second space 2 (first space 1 side), and the cooling part Although a seal member 5 surrounding the cooling section 4 is provided, if the heat conduction plate formed by an L-shaped plate is located inside the second space 2, the seal member 5 surrounding the cooling section 4 can be omitted.

Vent holes 6 are provided on both sides of the casing 10 that partitions the second space 2, and the air to be vented can proceed (flow) from one side to the other in a straight line (straight line) or a substantially straight line (substantially straight line). . Air entering through one of the vent ports 6 (intake port) passes in a straight line (straight line) or approximately in a straight line (substantially straight line), and is discharged from the other vent port 6 (exhaust port).
The position of the ventilation hole 6 may be, for example, at the same or approximately the same position on both sides of the casing 10 that partitions the second space 2 (with respect to the central plane parallel to the side surface of the casing 10). position). As shown in the figure, the vent 6 may be arranged at or near the center of the second space 2 when viewed from the side surface of the housing 10, or may be provided at any appropriate position above, below, left, or right. In addition, when viewed from the side of the illustrated casing 10, the vent 6 allows air to be vented to the second space 2 from the upper front side of the casing 10 to the lower back side, from the right side of the front side to the left side of the back side. , it can be configured to proceed in a straight line (in a straight line) in an appropriate direction, such as from the upper right on the front to the lower left on the back, or from the lower right on the front to the upper left on the back.

As shown in the figure, the fan 7 may be provided in either the intake port or the exhaust port 6, or may be provided in both vent ports 6.

With the above configuration, dust etc. from the outside air will not fly to the optical system 11, and the optical system 11 including lenses, mirrors, optical paths, etc. will not be contaminated or affected, and the spectral distribution and brightness will be maintained. Accordingly, it is possible to provide a measuring device that can accurately measure and manage chromaticity and correlated color temperature, and a dustproof method for the measuring device.

FIG. 2 shows a block diagram of the measuring device.
Furthermore, with reference to FIG. 2, a block diagram of the measuring device will be described.
The measuring device of the present invention and/or this embodiment receives measurement light from an optical system 11 by an electrical system 12 including a linear array sensor and the like.

Regarding the optical system 11, the light beam incident on the objective lens passes through an aperture mirror and is subjected to wavelength dispersion by a diffraction grating. The light after wavelength dispersion is imaged onto the linear array sensor by an imaging lens. Furthermore, the light beam reflected by the aperture mirror can be observed through the eyepiece.
Regarding the electrical system 12, the amount of photoelectricity accumulated in the linear array sensor is outputted via an analog unit, A/D converted, and the spectral radiance is calculated by the CPU.

The appearance of the casing 10 is created by bending a sheet metal such as aluminum or molding plastic or the like, and the optical system 11 is held by parts made of metal or plastic and attached to a bracket made of sheet metal or plastic. The board of the electrical system 12 is also attached to a bracket made of sheet metal, plastic, or the like.

The board of the electrical system 12 includes, for example, a DC power supply unit, a linear array sensor, an analog unit, an A/D converter, a CPU, an interface, an operation panel, and an external synchronization input connector. As the heat generating part 121, for example, a linear array sensor, an analog unit including the same, etc. can be considered, but any one or more of a linear array sensor, an analog unit, an A/D converter, a CPU, a DC power supply unit, etc. Can contain parts.

One side of the L-shaped plate used as the heat conduction part 3 is in contact with the heat generating part 121, and the other side is arranged in an isolated space. The heat generated from the heat generating part 121 is absorbed from one side of the L-shaped plate and conducted to the closed space, and the cooling part 4 such as a heat sink is attached to the other side. Air from the fan 7 is applied to the cooling unit 4 such as a heat sink to cool it.

Furthermore, a connector such as a BNC may be installed so that a frequency synchronization signal can be input and the blinking frequency can be detected. As the interface, an appropriate interface such as RS-232C or USB can be adopted. The internal mechanism part of the optical system 11 includes, for example, an aperture mirror switching, an optical path blocking shutter, and a finder shutter, and the aperture mirror switching and the optical path blocking shutter can be electrically switched types driven by a step motor, and the finder shutter can be switched to open/close. . For power supply to the electric system 12, an AC-DC converter or the like is used, for example.

There are two types of measurement methods: local measurement and remote measurement, each of which is performed using the following procedures.
(1) Local measurement: Turn on the power using the power switch on the main unit, adjust the diopter of the eyepiece, and then focus on the object to be measured using the objective lens.
・Select the measurement angle using the measurement angle selection switch.
・Close the finder shutter to block stray light from the eyepiece and start measurement.
・When the measurement is finished, the result will be displayed on the display.
(2) Remote measurement: Connect the main unit and computer using an interface such as USB or RS-232C cable.
- Turn on the computer and start the application software.
- Turn on the main power, adjust the diopter of the eyepiece, focus with the objective lens, and set the measurement angle, then close the finder shutter.
・Collect data using application software.

C. Measuring device of second embodiment and its dustproof method

FIG. 3 shows a configuration diagram (perspective view) of a measuring device according to the second embodiment.
The second embodiment differs from the first embodiment in that the heat conduction section 3' uses a flat plate instead of an L-shaped plate. In addition, the cooling part 4 is arrange|positioned on the upper surface of the heat conduction part 3' of a flat plate. Further, the other configurations, functions, etc. are the same as those in the first embodiment, and the block diagram of the measuring device is also the same as in FIG. 2 and its description.

1 First space 2 Second space 3, 3' Heat conduction part 4 Cooling part 5 Seal member 6 Vent hole 7 Fan 10 Housing 11 Optical system 12 Electrical system 121 Heat generating part

Claims (5)

a casing that has a first space inside that includes an electrical system having a heat generating part and an optical system for acquiring measurement light; and a second space that is isolated and partitioned from the first space;
It has an L-shaped plate, one side of the L-shaped plate is in contact with the heat generating part of the first space, and the other side of the L-shaped plate is in contact with the second space. a heat conductive part arranged to conduct heat from the heat generating part in the first space to the second space;
a cooling unit provided inside the second space on the other side of the L-shaped plate of the heat conduction unit ;
a sealing member for partitioning and sealing the second space from the first space;
A first and a second space are provided on both sides of a side surface of the casing forming a partition of the second space, and are configured such that air vented to the second space flows in a straight line or a substantially straight line from one side to the other. 2 vents and
a fan provided in either one or both of the first and second vents;
Equipped with
The other side of the L-shaped plate of the heat conduction part is in contact with the first space outside the second space, and the seal member surrounds and seals the cooling part,
The seal member covers a partition forming the second space in which the cooling unit is arranged, partitions and seals the first space from the casing, and separates the first space from the second space. Seal the partition of the space,
Heat generated from the heat generating part is absorbed from one side of the L-shaped plate of the heat conduction part, the heat is conducted to the sealed second space, and the heat conduction part is attached to the other side of the L-shaped plate. applying wind from the fan to the cooled cooling unit to cool it;
A measuring device characterized by :
The measuring device according to claim 1,
The first and second vents are provided on both sides of the casing that partitions the second space, and are located at the same or substantially the same position, or on both sides with respect to a central plane parallel to the side surface of the casing. 1. A measuring device characterized in that the air to be vented is configured to flow in a straight line or a substantially straight line from one side to the other at symmetrical positions on a surface.
The measuring device according to claim 1 or 2,
The measuring device is characterized in that the heat generating section includes one or more of a linear array sensor, an analog unit, an A/D converter, a CPU, and a DC power supply unit.
The measuring device according to any one of claims 1 to 3 ,
The measuring device is characterized in that the sealing member uses one of polyethylene, proproprene, double-sided tape, and cushioning material.
A method for preventing dust of a measuring device,
The measuring device is
a casing that has a first space inside that includes an electrical system having a heat generating part and an optical system for acquiring measurement light; and a second space that is isolated and partitioned from the first space;
An L-shaped plate is provided, one side of the L-shaped plate is in contact with the heat generating part of the first space, and the other side of the L-shaped plate is arranged in contact with the second space. a heat conducting part for conducting heat from the heat generating part in the first space to the second space;
a cooling unit provided inside the second space on the other side of the L-shaped plate of the heat conduction unit;
a sealing member for partitioning and sealing the second space from the first space;
A first and a second space are provided on both sides of a side surface of the casing forming a partition of the second space, and are configured such that air vented to the second space flows in a straight line or a substantially straight line from one side to the other. 2 vents and
A fan provided in one or both of the first and second vents;
Equipped with
The other side of the L-shaped plate of the heat conduction part is in contact with the first space outside the second space, and the seal member surrounds and seals the cooling part,
The seal member covers a partition forming the second space in which the cooling unit is arranged, partitions and seals the first space from the casing, and separates the first space from the second space. Seal the partition of the space,
Heat generated from the heat generating part is absorbed from one side of the L-shaped plate of the heat conduction part, the heat is conducted to the sealed second space, and the heat conduction part is attached to the other side of the L-shaped plate. applying air from the fan to the cooled cooling unit to cool it;
A dustproof method for a measuring device characterized by the following.

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