JP5863486B2 - Luminous intensity measuring instrument - Google Patents
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- JP5863486B2 JP5863486B2 JP2012019819A JP2012019819A JP5863486B2 JP 5863486 B2 JP5863486 B2 JP 5863486B2 JP 2012019819 A JP2012019819 A JP 2012019819A JP 2012019819 A JP2012019819 A JP 2012019819A JP 5863486 B2 JP5863486 B2 JP 5863486B2
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Description
本発明は、残光輝度を測定することのできる蓄光輝度測定器に関する。 The present invention relates to a luminous intensity measuring device capable of measuring afterglow luminance.
従来から、蓄光性材料を用いて安全に対する警告、指示等の情報を伝達する安全標識板が知られている。この種の安全標識板は、合成樹脂製、陶器製、或いはガラス製等の基板の表面に、蓄光性材料を塗布加工等すると共に、色材料によって安全に対する警告等の情報をデザイン化することにより構成されている（例えば、特許文献１参照。）。 Conventionally, a safety sign board that transmits information such as warnings and instructions for safety using a phosphorescent material is known. This kind of safety sign board is designed by applying a phosphorescent material on the surface of a synthetic resin, earthenware, or glass substrate and designing information such as warnings for safety by using color materials. (For example, refer patent document 1).
ところで、蓄光性材料は、太陽光、蛍光等の光を吸収してそのエネルギーを蓄積し、この蓄積されたエネルギーを可視光として放出する物理特性を有する。その蓄光性材料は、暗闇になったときでも残光としてのリン光を発生するので、その安全標識板は、暗闇の中でも、蓄光性材料から発せられるリン光により安全標識を認識できる。 By the way, the luminous material has the physical property of absorbing light such as sunlight and fluorescence, storing the energy, and emitting the stored energy as visible light. Since the phosphorescent material generates phosphorescence as an afterglow even in the dark, the safety sign plate can recognize the safety sign by phosphorescence emitted from the phosphorescent material even in the dark.
その蓄光性材料から発せられるリン光は、時間の経過と共に減衰する減衰特性を有する。蓄光性材料には、アルミニウム酸ストロンチウム、アルミン酸カルシウム、硫化亜鉛等が知られている。 The phosphorescence emitted from the phosphorescent material has an attenuation characteristic that attenuates over time. Known phosphorescent materials include strontium aluminate, calcium aluminate, zinc sulfide, and the like.
暗所で安全標識として機能させるためには、所要時間が経過したときの安全標識板のリン光の輝度が所定値以上であることが要求される。例えば、蓄光性材料を用いて安全に対する警告、指示等の情報を伝達する安全標識板の場合、安全標識板に光を所定時間、所定強度で照射して、２０分経過後の残光輝度としてのリン光輝度が２４ｍｃｄ／ｍ2（２４ミリカンデラ／ｍ2）であることが要求される。 In order to function as a safety sign in a dark place, it is required that the luminance of phosphorescence of the safety sign plate when a required time elapses is a predetermined value or more. For example, in the case of a safety sign board that transmits information such as safety warnings and instructions using a phosphorescent material, the safety sign board is irradiated with light at a predetermined intensity for a predetermined time, and the afterglow luminance after 20 minutes has elapsed. Is required to have a phosphorescence luminance of 24 mcd / m 2 (24 mCandela / m 2 ).
ところで、この種の安全標識の残光輝度を測定する測定器として、スポットメータのような輝度測定器が用いられ、この種の安全標識の残光輝度の測定は、例えば、以下に説明する手順により行われる。
まず、この種の安全標識を暗所に数時間保管してリン光輝度を減衰させる。
By the way, as a measuring instrument for measuring the afterglow luminance of this type of safety sign, a luminance measuring device such as a spot meter is used, and the measurement of the afterglow luminance of this type of safety sign is, for example, a procedure described below. Is done.
First, this type of safety sign is stored in the dark for several hours to attenuate phosphorescence.
その後、所定の照度の光を所定時間照射して、蓄光性材料に光エネルギーを蓄積させる。
ついで、その蓄光性材料に光エネルギーが蓄積された安全標識を暗所に再び置いて、輝度計により残光輝度としてのリン光の輝度を測定する。
Thereafter, light with a predetermined illuminance is irradiated for a predetermined time to accumulate light energy in the phosphorescent material.
Next, a safety sign in which light energy is stored in the phosphorescent material is placed again in a dark place, and the luminance of phosphorescence as afterglow luminance is measured by a luminance meter.
例えば、JIS（日本工業規格）では、その標識板の残光輝度を測定するために、所定の照度の光を所定時間照射する励起光源として、常用光源蛍光ランプD65を用いることが規定されている。 For example, JIS (Japanese Industrial Standards) stipulates that a regular light source fluorescent lamp D65 is used as an excitation light source for irradiating light with a predetermined illuminance for a predetermined time in order to measure the afterglow luminance of the sign board. .
ところが、励起光源には、蛍光灯の他、電球、発光ダイオード（LED）、ハロゲンランプなどがあり、これらの光源の色温度特性（発光スペクトル）が異なるため、照度（ルクス（ｌｘ））が同じであっても、その標識板の所定時間経過後の残光輝度が異なることが、研究によって明らかになりつつある。 However, excitation light sources include fluorescent lamps, light bulbs, light-emitting diodes (LEDs), halogen lamps, etc., and these light sources have different color temperature characteristics (emission spectra), so the illuminance (lux (lx)) is the same. Even so, studies have revealed that the afterglow brightness of the sign plate after a predetermined time has changed.
すなわち、蓄光性材料を励起する励起波長は、蓄光性材料の物理特性によって異なり、紫外線ないし紫色の光の波長（波長２５０ｎｍないし４５０ｎｍ）の範囲であり、このため、照度だけを基準として安全標識の残光輝度を評価するのは好ましくない。 That is, the excitation wavelength for exciting the phosphorescent material varies depending on the physical characteristics of the phosphorescent material, and is in the range of ultraviolet or violet light wavelength (wavelength 250 nm to 450 nm). It is not preferable to evaluate the afterglow luminance.
このため、蓄光標識の残光輝度の評価を正確に精度良く測定するには、照度測定器と、紫外線強度測定器と、蓄光輝度測定器との三種類の測定器が必要となる。
ところが、蓄光標識の輝度を測定するのに、携帯型の三種類の測定器を現地に持参するのは、携帯型とは言っても不便である。また、測定器のコストもかかる。
For this reason, in order to accurately and accurately measure the afterglow luminance evaluation of the phosphorescent sign, three types of measuring devices are required: an illuminance measuring device, an ultraviolet intensity measuring device, and a phosphorescent luminance measuring device.
However, it is inconvenient to bring three types of portable measuring instruments to the site to measure the brightness of phosphorescent signs. Moreover, the cost of a measuring device is also required.
更に、残光輝度の測定には、蓄光標識の設置箇所によって測定のバラツキがあるため、測定の再現性についての信頼性も要求される。
その残光輝度の評価は、残光の減衰量を用いてその評価を行うため、測定開始時点に極力留意する必要がある。
Furthermore, in the measurement of afterglow luminance, there is a variation in measurement depending on the location where the phosphorescent sign is installed, and thus reliability of measurement reproducibility is required.
Since the evaluation of the afterglow luminance is performed using the attenuation amount of afterglow, it is necessary to pay attention as much as possible to the measurement start time.
本発明は、上記の事情に鑑みて為されたもので、残光輝度の測定開始時点のバラツキを極力小さくすることのできる蓄光輝度測定器を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a phosphorescent luminance measuring device capable of minimizing variation at the time of starting measurement of afterglow luminance.
本発明に係る蓄光輝度測定器は、残光輝度検出用受光部を有する残光輝度検出用受光ケースと、この残光輝度検出用受光ケースが着脱可能でかつ残光輝度を演算して測定する測定部を有する測定器本体ケースとからなる。 A phosphorescence luminance measuring device according to the present invention is an afterglow luminance detection light-receiving case having an afterglow luminance detection light-receiving unit, and the afterglow luminance detection light-receiving case is detachable and calculates and measures the afterglow luminance. It consists of a measuring device main body case having a measuring part .
残光輝度検出用受光ケースは、残光が入射する入射開口部を有し、この入射開口部には残光輝度検出用受光部から測定部に向けて出力された光電変換信号を用いて残光輝度の測定を開始させる機械式測定開始スイッチ部材が設けられている。 The afterglow luminance detection light receiving case has an incident opening through which the afterglow is incident, and the incident opening uses the photoelectric conversion signal output from the afterglow luminance detection light receiving unit to the measurement unit. A mechanical measurement start switch member for starting the measurement of light luminance is provided.
本発明によれば、残光輝度検出用受光ケースを測定器本体ケースに装着して、蓄光部材に対向させてセットさせると、機械式測定開始スイッチ部材がオンされ、残光輝度検出用受光部から測定部に向けて出力された光電変換信号を用いて残光輝度の測定が開始され、残光輝度の測定開始時点のバラツキを極力小さくすることができる。 According to the present invention, when the afterglow luminance detection light receiving case is attached to the measuring device main body case and set to face the phosphorescent member, the mechanical measurement start switch member is turned on, and the afterglow luminance detection light receiving unit. Afterglow luminance measurement is started using the photoelectric conversion signal output from the sensor to the measurement unit, and the variation at the time of the afterglow luminance measurement start can be minimized.
以下に、本発明に係る蓄光輝度測定器の実施例を添付図面を参照しつつ説明する。
図１は、本発明に係る蓄光輝度測定器の概要を示す回路ブロック図である。
その図１において、１は残光輝度検出用受光ケース、２は励起強度検出用受光ケース、３は測定器本体ケースである。
Embodiments of a luminous intensity measuring device according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a circuit block diagram showing an outline of a luminous intensity measuring device according to the present invention.
In FIG. 1, 1 is a light receiving case for detecting afterglow luminance, 2 is a light receiving case for detecting excitation intensity, and 3 is a measuring device main body case.
残光輝度検出用受光ケース１は、蓄光標識４の蓄光材料から放射される可視光を受光して光電変換信号Spを出力する残光輝度検出用受光部５と、識別信号Sｈを出力する識別信号出力部６とを有する。 The afterglow luminance detection light receiving case 1 receives the visible light emitted from the phosphorescent material of the phosphorescent sign 4 and outputs the photoelectric conversion signal Sp, and the identification for outputting the identification signal Sh. And a signal output unit 6.
励起強度検出用受光ケース２は、蓄光材料を励起する励起光源からの励起光を受光して光電変換信号Spを出力する励起強度検出用受光部７と、識別信号Sｈ’を出力する識別信号出力部８とを有する。 The excitation intensity detection light receiving case 2 receives excitation light from an excitation light source that excites a phosphorescent material and outputs a photoelectric conversion signal Sp, and an identification signal output that outputs an identification signal Sh ′. Part 8.
残光輝度検出用受光ケース１と励起強度検出用受光ケース２とは同一の測定器本体ケース３に着脱可能とされて、後述するコネクタ部により電気的に接続される。その残光輝度検出用受光部５、励起強度検出用受光部７、識別信号出力部６、８には、例えば、後述する電源部から電源電力が供給される。 The afterglow luminance detection light-receiving case 1 and the excitation intensity detection light-receiving case 2 can be attached to and detached from the same measuring device main body case 3 and are electrically connected by a connector portion described later. The afterglow luminance detection light receiving unit 5, the excitation intensity detection light receiving unit 7, and the identification signal output units 6 and 8 are supplied with power from, for example, a power supply unit described later.
識別信号Sｈは、例えば、（H、H）信号から構成され、識別信号Sh’は、例えば、（H、L）信号から構成され、これにより、残光輝度検出用受光ケース１が測定器本体ケース３に接続されたか、励起強度検出用受光ケース２が測定器本体ケース３に接続されたかが区別される。 The identification signal Sh is composed of, for example, an (H, H) signal, and the identification signal Sh ′ is composed of, for example, an (H, L) signal. It is distinguished whether it is connected to the case 3 or whether the light receiving case 2 for detecting excitation intensity is connected to the measuring device main body case 3.
測定器本体ケース３は、測定部９と、識別部１０と、表示部１１と、電源部１２とを有する。電源部１２の電源には、例えば、電池が用いられる。その電源部１２は、測定部９、識別部１０、表示部１１、残光輝度検出用受光ケース１、励起強度検出用受光ケース２に電力を供給する。 The measuring device main body case 3 includes a measurement unit 9, an identification unit 10, a display unit 11, and a power supply unit 12. For example, a battery is used as the power supply of the power supply unit 12. The power supply unit 12 supplies power to the measurement unit 9, the identification unit 10, the display unit 11, the afterglow luminance detection light receiving case 1, and the excitation intensity detection light reception case 2.
識別部１０は、識別信号Sｈ、Sｈ’が入力されて、測定器本体ケース３に残光輝度検出用受光ケース１と励起強度検出用受光ケース２とのいずれが接続されたか否かを認識する機能を果たす。 The identification unit 10 receives the identification signals Sh and Sh ′, and recognizes which of the afterglow luminance detection light receiving case 1 and the excitation intensity detection light receiving case 2 is connected to the measuring device main body case 3. Fulfills the function.
測定部９は、残光輝度検出用受光部５からの光電変換信号Spが入力されると残光輝度演算プログラムに従って演算を行って残光輝度を求める残光輝度測定部と、励起強度検出用受光部７から光電変換信号Spが入力されると励起強度演算プログラムに従って演算を行って励起強度を求める励起強度測定部とを備えている。 When the photoelectric conversion signal Sp from the afterglow luminance detection light receiving unit 5 is input, the measurement unit 9 performs an operation according to an afterglow luminance calculation program to obtain an afterglow luminance, and an excitation intensity detection When the photoelectric conversion signal Sp is input from the light receiving unit 7, an excitation intensity measuring unit that calculates the excitation intensity by performing an operation according to the excitation intensity calculation program is provided.
識別部１０は、残光輝度検出用受光ケース１が測定器本体ケース３に装着されたときには、測定部９を残光輝度演算プログラムに従って演算する状態に切り替え、励起強度検出用受光ケース２が測定器本体ケース３に装着されたときには、測定部９を励起強度演算プログラムに従って演算する状態に切り替える。 When the afterglow luminance detection light receiving case 1 is attached to the measuring device main body case 3, the identification unit 10 switches the measurement unit 9 to a state of calculating according to the afterglow luminance calculation program, and the excitation intensity detection light receiving case 2 performs measurement. When mounted on the instrument body case 3, the measuring unit 9 is switched to a state of calculation according to the excitation intensity calculation program.
励起強度検出用受光ケース２は、図２（a）に示すように、照度検出用受光ケース２Aであっても良いし、図２（ｂ）に示すように、紫外線強度検出用受光ケース２Bであっても良い。 The light receiving case 2 for detecting excitation intensity may be a light receiving case 2A for detecting illuminance as shown in FIG. 2A, or a light receiving case 2B for detecting UV intensity as shown in FIG. 2B. There may be.
照度検出用受光ケース２Aは、励起光としての照明光を受光して光電変換信号Spを出力する照度検出用受光部７Aと、識別信号出力部８Aとを有する。
紫外線強度検出用受光ケース２Bは、励起光としての紫外線を受光して光電変換信号Spを出力する紫外線強度検出用受光部７Bと、識別信号出力部８Bとを有する。
The illuminance detection light receiving case 2A includes an illuminance detection light receiving unit 7A that receives illumination light as excitation light and outputs a photoelectric conversion signal Sp, and an identification signal output unit 8A.
The ultraviolet intensity detection light receiving case 2B includes an ultraviolet intensity detection light receiving portion 7B that receives ultraviolet light as excitation light and outputs a photoelectric conversion signal Sp, and an identification signal output portion 8B.
識別信号出力部８Aは識別信号Sｈ’１を出力し、識別信号出力部８Bは識別信号Sｈ’２を出力し、識別信号Sh’１は、例えば、（L、H）信号、識別信号Sh’２は、例えば、（L、L）信号から構成され、これらのハイレベルと、ローレベルの信号の組み合わせによって、残光輝度検出用受光ケース１と照度検出用受光ケース２Aと紫外線強度検出用受光ケース２Bとのいずれが測定器本体ケース３に接続されたか否かが区別される。 The identification signal output unit 8A outputs an identification signal Sh′1, the identification signal output unit 8B outputs an identification signal Sh′2, and the identification signal Sh′1 is, for example, an (L, H) signal or an identification signal Sh ′. 2 is composed of, for example, (L, L) signals, and afterglow luminance detection light receiving case 1, illuminance detection light receiving case 2A, and ultraviolet light intensity detection light reception by a combination of these high level and low level signals. It is distinguished which of the case 2B is connected to the measuring device main body case 3.
識別部１０は、照度検出用受光ケース２Aが測定器本体ケース３に装着されたときには、測定部９を照度演算プログラムに従って演算する状態に切り替え、紫外線強度検出用受光ケース２Bが測定器本体ケース３に装着されたときには、測定部９を紫外線強度演算プログラムに従って演算する状態に切り替える。 When the illuminance detection light receiving case 2A is attached to the measuring device main body case 3, the identification unit 10 switches the measuring unit 9 to a state of calculating according to the illuminance calculation program, and the ultraviolet intensity detection light receiving case 2B is set to the measuring device main body case 3. When mounted, the measuring unit 9 is switched to a state of calculation according to the ultraviolet intensity calculation program.
（残光輝度検出用受光ケース１と照度検出用受光ケース２Aと紫外線強度検出用受光ケース２Bと測定器本体ケース３の外観構成）
図３は蓄光輝度測定器の分解斜視図を示している。
(Appearance structure of afterglow luminance detection light receiving case 1, illuminance detection light receiving case 2A, ultraviolet intensity detection light receiving case 2B, and measuring device body case 3)
FIG. 3 shows an exploded perspective view of the luminous intensity measuring device.
残光輝度検出用受光ケース１、照度検出用受光ケース２A、紫外線強度検出用受光ケース２Bは、同一形状の一対の位置決めピン１３と、同一形状のコネクタ部１４とを有する。コネクタ部１４には挿入方向に延びる案内突起１４’（図４参照）と図示を略す電力供給端子、入出力信号端子とが形成されている。 The afterglow luminance detection light receiving case 1, the illuminance detection light receiving case 2A, and the ultraviolet light intensity detection light receiving case 2B have a pair of positioning pins 13 having the same shape and a connector portion 14 having the same shape. The connector portion 14 is formed with a guide protrusion 14 '(see FIG. 4) extending in the insertion direction, a power supply terminal (not shown), and an input / output signal terminal.
残光輝度検出用受光部５は、図４に示すように、残光輝度検出用受光ケース１の外面から突出されて可視光としてのりん光が入射する円柱形状の入射開口部１５を有する。この入射開口部１５の詳細については後述する。 As shown in FIG. 4, the afterglow luminance detection light receiving portion 5 has a cylindrical incident opening 15 that protrudes from the outer surface of the afterglow luminance detection light receiving case 1 and into which phosphorescence as visible light enters. Details of the incident opening 15 will be described later.
照度検出用受光部７Aは、図３に示すように、照度検出用受光ケース２Aの外面から突出されて可視光としての照明光が入射する輪環状入射開口部１６を有する。紫外線強度検出用受光部７Bは、紫外線強度検出用受光ケース２Bの外面から突出されて、紫外線が入射する輪環状入射開口部１７を有する。その図３において、符合１６a、１７aは入射面を示している。 As shown in FIG. 3, the illuminance detection light receiving portion 7 </ b> A has an annular incident opening 16 that protrudes from the outer surface of the illuminance detection light reception case 2 </ b> A and into which illumination light as visible light enters. The ultraviolet intensity detection light-receiving portion 7B has an annular incident opening 17 that protrudes from the outer surface of the ultraviolet intensity detection light-receiving case 2B and receives ultraviolet rays. In FIG. 3, reference numerals 16a and 17a indicate incident surfaces.
測定器本体ケース３は、コネクタ部１４に対応するコネクタ部１８を有し、このコネクタ部１８には案内突起１４’に対応する案内溝１８’が形成されると共に、コネクタ部１８を挟んでその両側に一対の位置決めピン１３が嵌合する嵌合穴１９が形成されている。その測定器本体ケース３の側面には、図３、図４に示すように、電源スイッチ２０と、予測スイッチ２１とが設けられている。 The measuring instrument main body case 3 has a connector portion 18 corresponding to the connector portion 14, a guide groove 18 ′ corresponding to the guide protrusion 14 ′ is formed in the connector portion 18, and the connector portion 18 is sandwiched therebetween. A fitting hole 19 into which the pair of positioning pins 13 are fitted is formed on both sides. As shown in FIGS. 3 and 4, a power switch 20 and a prediction switch 21 are provided on the side surface of the measuring instrument main body case 3.
電源スイッチ２０をオンすると、測定部９と、識別部１０と、表示部１１とに電力が供給されて、測定器本体ケース３が測定可能状態となると共に、測定器本体ケース３に装着された検出用受光ケースに電力が供給される。予測スイッチ２１は、残光輝度測定の際に用いられるものであるが、この発明に直接的に関連しないので、その説明は省略する。 When the power switch 20 is turned on, power is supplied to the measurement unit 9, the identification unit 10, and the display unit 11, and the measurement device main body case 3 becomes ready for measurement and is attached to the measurement device main body case 3. Electric power is supplied to the light receiving case for detection. The prediction switch 21 is used when measuring the afterglow luminance, but since it is not directly related to the present invention, the description thereof is omitted.
図５は測定器本体ケース３に残光輝度検出用受光ケース１が装着された状態が示されている。その測定器本体ケース３には、この測定器本体ケース３に残光輝度検出用受光ケース１を装着したときに、図６に示すように、入射開口部１５が蓄光標識４に臨む側の外面と同一側の外面３aにこの外面３aから突出する一対の脚部２２が形成されていると共に、電池蓋２３が設けられている。 FIG. 5 shows a state in which the afterglow luminance detection light receiving case 1 is attached to the measuring device main body case 3. When the afterglow luminance detection light receiving case 1 is attached to the measuring device main body case 3, the outer surface of the measuring device main body case 3 where the incident opening 15 faces the phosphorescent sign 4 as shown in FIG. 6. A pair of leg portions 22 projecting from the outer surface 3a are formed on the outer surface 3a on the same side as the battery lid 23, and a battery lid 23 is provided.
その一対の脚部２２の外面３aからの突出高さHは、図７に示すように、入射開口部１５の外面からの突出高さと略同じ高さとされている。これにより、蓄光輝度測定器を蓄光標識４に置いて、残光輝度を測定するときに、蓄光標識４に対する蓄光輝度測定器の平行性が保たれる。なお、その測定器本体ケース３の電源スイッチ２０が設置されている側面と反対側の側面にはAC電源供給用アダプタ端子２４が設けられている。 The protruding height H of the pair of leg portions 22 from the outer surface 3a is substantially the same as the protruding height of the incident opening 15 from the outer surface, as shown in FIG. Thereby, when the phosphorescence luminance measuring device is placed on the phosphorescent marker 4 and the afterglow luminance is measured, the parallelism of the phosphorescent luminance measuring device with respect to the phosphorescent marker 4 is maintained. An AC power supply adapter terminal 24 is provided on the side surface of the measuring device main body case 3 opposite to the side surface on which the power switch 20 is installed.
その測定器本体ケース３の外面３aと反対側の外面３ｂには、図３ないし図５に示すように、表示部１１の一部を構成しかつ測定部９の測定結果を表示する表示面３ｃが設けられている。 On the outer surface 3b opposite to the outer surface 3a of the measuring instrument main body case 3, as shown in FIGS. 3 to 5, a display surface 3c that constitutes a part of the display unit 11 and displays the measurement result of the measuring unit 9 is displayed. Is provided.
測定器本体ケース３に励起強度検出用受光ケース２（照度検出用受光ケース２A、紫外線強度検出用受光ケース２B）を装着したときの測定器本体ケース３の外面からの輪環状入射開口部１６、１７の突出方向は、測定器本体ケース３に残光輝度検出用受光ケース１を装着したときの測定器本体ケース３の外面からの入射開口部１５の突出方向に対して逆向きにされている。 An annular incident opening 16 from the outer surface of the measuring instrument body case 3 when the measuring instrument body case 3 is fitted with the excitation intensity detection light receiving case 2 (illuminance detection light receiving case 2A, ultraviolet intensity detection light receiving case 2B); The protruding direction of 17 is opposite to the protruding direction of the incident opening 15 from the outer surface of the measuring instrument body case 3 when the afterglow luminance detection light receiving case 1 is attached to the measuring instrument body case 3. .
表示面３ｃは、測定器本体ケース３に励起強度検出用受光ケース２（照度検出用受光ケース２A、紫外線強度検出用受光ケース２B）を装着したときに測定器本体ケース３から突出する側の外面３ｂに設けられているので、照度測定中には、照度の測定結果を目視確認でき、紫外線強度を測定中には、紫外線強度を目視確認できる。 The display surface 3c is an outer surface on the side that protrudes from the measuring instrument main body case 3 when the measuring instrument main body case 3 is mounted with the excitation intensity detecting light receiving case 2 (illuminance detecting light receiving case 2A, ultraviolet light intensity detecting light receiving case 2B). Since it is provided in 3b, the measurement result of the illuminance can be visually confirmed during the illuminance measurement, and the ultraviolet intensity can be visually confirmed during the measurement of the ultraviolet intensity.
また、表示面３ｃは、測定器本体ケース３に残光輝度検出用受光ケース１を装着したときには、入射開口部１５が突出する側の外面３aに対して反対側になっているので、残光輝度測定中もその測定結果を目視確認できる。 Further, when the afterglow luminance detection light receiving case 1 is attached to the measuring instrument main body case 3, the display surface 3c is opposite to the outer surface 3a on the side from which the incident opening 15 protrudes. The measurement result can be visually confirmed even during the luminance measurement.
照度検出用受光部７A、紫外線強度検出用受光部７Bの構造には、小型化を図るのみで公知のものを用いることができるので、その詳細な説明は省略することとし、以下、残光輝度検出用受光部５の詳細構成について説明する。 As the structures of the illuminance detection light-receiving unit 7A and the ultraviolet intensity detection light-receiving unit 7B, a well-known one can be used simply by reducing the size, and therefore detailed description thereof will be omitted. A detailed configuration of the detection light receiving unit 5 will be described.
（残光輝度検出用受光部５、入射開口部１５の構造）
入射開口部１５は、黒色の環状のクッション部材２６と、黒色の蓋板２７とを有する。蓋板２７はネジ部材２７aにより入射開口部１５に固定されている。その蓋板２７には、図８に示すように、円形開口２８、２９が形成されている。クッション部材２６、蓋板２７を黒色にしたのは、反射を極力防止するためである。そのクッション部材２６は、その縮み分を考慮して蓋板２７よりも若干外側に向かって突出されている。これにより、残光輝度測定の際に残光輝度検出用受光部５に散乱光が入射するのが防止される。
(Structure of the afterglow luminance detecting light receiving portion 5 and the incident aperture 15)
The incident opening 15 includes a black annular cushion member 26 and a black lid plate 27. The lid plate 27 is fixed to the incident opening 15 by a screw member 27a. As shown in FIG. 8, circular openings 28 and 29 are formed in the lid plate 27. The reason why the cushion member 26 and the cover plate 27 are black is to prevent reflection as much as possible. The cushion member 26 protrudes slightly outward from the lid plate 27 in consideration of the contraction. This prevents scattered light from entering the afterglow luminance detecting light receiving portion 5 during the afterglow luminance measurement.
その入射開口部１５の内部には、図６、図７に示すように、その奥部から円形開口２８に向かって、受光素子としてのシリコンフォトダイオード３０、第１フィルタ３１、第２フィルタ３２が配設されている。 As shown in FIGS. 6 and 7, a silicon photodiode 30 as a light receiving element, a first filter 31, and a second filter 32 are arranged inside the incident opening 15 from the inner part toward the circular opening 28. It is arranged.
シリコンフォトダイオード３０は、光の波長に対して図１０（a）に示す感度曲線Q１を有している。フィルタ３１は、図１０（ｂ）に示す透過率曲線Q2を有し、フィルタ３２は図１０（ｃ）示す透過率曲線Q３を有し、フィルタ３１とフィルタ３２とにより図１０（ｄ）に示す人間の標準比視感度曲線Q４に近似した波長分布の光がシリコンフォトダイオード３０に入射する構成とされている。なお、フィルタ３２は、シリコンフォトダイオード３０の長波長側の光電変換信号Spの出力を抑制するのにも用いられる。 The silicon photodiode 30 has a sensitivity curve Q1 shown in FIG. 10A with respect to the wavelength of light. The filter 31 has the transmittance curve Q2 shown in FIG. 10B, the filter 32 has the transmittance curve Q3 shown in FIG. 10C, and the filter 31 and the filter 32 show the result in FIG. Light having a wavelength distribution approximate to the human standard relative luminous sensitivity curve Q4 is incident on the silicon photodiode 30. The filter 32 is also used to suppress the output of the photoelectric conversion signal Sp on the long wavelength side of the silicon photodiode 30.
その入射開口部１５の内部には、図１１に拡大して示すように、機械式測定開始スイッチ部材３３と、マイクロスイッチ部材３４とが設けられている。機械式測定開始スイッチ部材３３は、板バネ３３Aと板バネ３３Bとから構成されている。 Inside the entrance opening 15, as shown in an enlarged view in FIG. 11, a mechanical measurement start switch member 33 and a micro switch member 34 are provided. The mechanical measurement start switch member 33 includes a leaf spring 33A and a leaf spring 33B.
板バネ３３Aは、図１２に示すように、マイクロスイッチ部材３４の頂部に固定されて、傾斜片部３３A’と半円柱状係合凸部３３A”とを有し、その傾斜片部３３A’が撓むようにされている。板バネ３３Bは半円状湾曲部３３B’を有する。この半円状湾曲部３３B’は、図８、図９に示すように、円形開口２９から外部に突出している。 As shown in FIG. 12, the leaf spring 33A is fixed to the top of the microswitch member 34 and has an inclined piece portion 33A ′ and a semi-cylindrical engaging convex portion 33A ″, and the inclined piece portion 33A ′ The leaf spring 33B has a semicircular curved portion 33B ′, which projects outward from the circular opening 29 as shown in FIGS.
その傾斜片部３３A’は、マイクロスイッチ部材３４のアクチュエータ３５に当接されており、その傾斜片部３３A’はマイクロスイッチ部材３４のアクチュエータ３５の進出ストロークを確保するのに用いられる。 The inclined piece portion 33A 'is in contact with the actuator 35 of the microswitch member 34, and the inclined piece portion 33A' is used to secure the advance stroke of the actuator 35 of the microswitch member 34.
そのマイクロスイッチ部材３４は、半円状湾曲部３３B’が蓄光標識４としての例えば安全標識（図１３参照）に接触されて、入射開口部１５の内部に押し込まれると、オンされる。 The microswitch member 34 is turned on when the semicircular curved portion 33 </ b> B ′ is brought into contact with, for example, a safety sign (see FIG. 13) as the phosphorescent sign 4 and pushed into the entrance opening 15.
残光輝度検出用受光部５は、電源スイッチ２０がオンされると、一定時間間隔で光電変換信号Spを測定部９に向けて出力する。そのマイクロスイッチ部材３４がオンされると、測定部９はこの測定部９に入力された光電変換信号Spを用いて残光輝度の測定を開始する。
ここで、残光輝度の測定開始を機械式にした理由は、後述することとし、先にこの蓄光輝度測定器の使用方法を説明する。
When the power switch 20 is turned on, the afterglow luminance detection light receiving unit 5 outputs the photoelectric conversion signal Sp toward the measurement unit 9 at regular time intervals. When the microswitch member 34 is turned on, the measurement unit 9 starts measuring the afterglow luminance using the photoelectric conversion signal Sp input to the measurement unit 9.
Here, the reason why the measurement of the afterglow luminance is made mechanical will be described later, and the method of using this phosphorescence luminance measuring device will be described first.
蓄光標識（安全標識）４には、通常、蛍光灯や太陽光により、図１４（a）に示すように、励起光としての紫外光や可視光が照射されている。停電等により、暗闇になると、蓄光材料４’が塗布された部分から放射される可視光としてりん光が放射される。 The phosphorescent sign (safety sign) 4 is usually irradiated with ultraviolet light or visible light as excitation light as shown in FIG. In the dark due to a power failure or the like, phosphorescence is emitted as visible light emitted from the portion where the phosphorescent material 4 ′ is applied.
そこで、紫外光や可視光等の励起光の励起強度を測定するときには、図１４（ｂ）に示すように、測定器本体ケース３に照度検出用受光ケース２A又は紫外線強度検出用受光ケース２Bを装着して蓄光標識４にセットする。この場合、蓄光標識４に対して蓄光輝度測定器が平行となるように、一対の脚部２２を二組設けるのが望ましい。一対の脚部２２を二組設けると、光に曝される蓄光輝度測定器の姿勢を蓄光標識４の姿勢と同じに保つことができるので、励起強度の測定を実際の環境条件により近い条件のもとで行うことができる。 Therefore, when the excitation intensity of excitation light such as ultraviolet light or visible light is measured, as shown in FIG. 14B, the illuminance detection light receiving case 2A or the ultraviolet intensity detection light receiving case 2B is provided in the measuring instrument body case 3. Wear it and set it on the phosphorescent sign 4. In this case, it is desirable to provide two pairs of leg portions 22 so that the luminous intensity measuring device is parallel to the luminous index 4. When two pairs of legs 22 are provided, the posture of the phosphorescent luminance measuring device exposed to light can be kept the same as the posture of the phosphorescent marker 4, so that the excitation intensity can be measured under conditions closer to the actual environmental conditions. Can be done with.
このように一対の脚部２２を二組設けると、輪環状入射開口部１６、１７に垂直方向から入射する紫外光や可視光を均一に受光部に取り込むことができることとなって便利だからである。 If two pairs of leg portions 22 are provided in this way, it is convenient because ultraviolet light and visible light incident on the annular incident openings 16 and 17 from the vertical direction can be uniformly taken into the light receiving portion. .
残光輝度を測定するときには、図１４（ｃ）に示すように、測定器本体ケース３に残光輝度検出用受光ケース１を装着して、蓄光標識４にセットする。
すると、半円状湾曲部３３B’が蓄光標識４に接触して、マイクロスイッチ部材３４がオンされ、これにより、測定部９は光電変換信号Spを用いて残光輝度の測定を開始する。
When measuring the afterglow luminance, as shown in FIG. 14 (c), the afterglow luminance detection light receiving case 1 is attached to the measuring device main body case 3 and set to the phosphorescent sign 4.
Then, the semicircular curved portion 33B ′ comes into contact with the phosphorescent marker 4 and the microswitch member 34 is turned on, whereby the measuring unit 9 starts measuring the afterglow luminance using the photoelectric conversion signal Sp.
残光輝度測定器は、蓄光標識４に平行であるので、円柱開口２８には、受光素子の入射面に対して略垂直方向からりん光が入射する。測定部９は、その光電変換信号Spに基づいて残光輝度を演算し、その演算結果が表示部１１に表示される。残光輝度は時間の経過と共に減少するが、測定部９は、その時々刻々とその残光輝度の測定値を表示する。 Since the afterglow luminance measuring device is parallel to the phosphorescent marker 4, phosphorescence is incident on the cylindrical opening 28 from a direction substantially perpendicular to the incident surface of the light receiving element. The measurement unit 9 calculates the afterglow luminance based on the photoelectric conversion signal Sp, and the calculation result is displayed on the display unit 11. Although the afterglow luminance decreases with the passage of time, the measurement unit 9 displays the measurement value of the afterglow luminance every moment.
（機械式測定開始スイッチ部材３３を用いて残光輝度の測定を開始させることとした理由）
機械式測定開始スイッチ部材３３を用いる代わりに、光スイッチを用いることとすると、蓄光標識４の基材がガラスや反射率の高いものであると、反射光を受光するおそれが高まり、残光輝度の測定開始タイミングにばらつきが生じるからである。
(Reason why the measurement of afterglow luminance is started using the mechanical measurement start switch member 33)
If an optical switch is used instead of using the mechanical measurement start switch member 33, if the base material of the phosphorescent marker 4 is made of glass or high reflectance, the possibility of receiving reflected light increases, and the afterglow luminance is increased. This is because the measurement start timing varies.
また、この実施例では、蓄光標識４への接触と同時に自動的にマイクロスイッチ部材３４をオンさせて残光輝度の測定開始を実行させているので、人為的操作ミスによるタイムラグを防止できる。 In this embodiment, since the microswitch member 34 is automatically turned on simultaneously with the contact with the phosphorescent sign 4 to start the measurement of the afterglow luminance, a time lag due to an artificial operation error can be prevented.
また、蓄光標識４に接触しなければ、マイクロスイッチ部材３４がオンしないので、残光輝度の測定精度の確実性を高めることができる。 Moreover, since the microswitch member 34 will not turn on unless it contacts the phosphorescent marker 4, the certainty of the measurement accuracy of afterglow luminance can be improved.
１…残光輝度検出用受光ケース
３…測定器本体ケース
５…残光輝度検出用受光部
９…測定部
３３…機械式測定開始スイッチ部材
Sｐ…光電変換信号
DESCRIPTION OF SYMBOLS 1 ... Afterglow brightness detection light receiving case 3 ... Measuring device main body case 5 ... Afterglow brightness detection light receiving part 9 ... Measuring part 33 ... Mechanical measurement start switch member
Sp: photoelectric conversion signal
Claims (3)
前記残光輝度検出用受光ケースは、残光が入射する入射開口部を有し、
該入射開口部には、前記残光輝度検出用受光部から前記測定部に向けて出力された光電変換信号を用いて残光輝度の測定を開始させる機械式測定開始スイッチ部材が設けられ、
前記機械式測定開始スイッチ部材は、半円状湾曲部を有する板バネと傾斜片部を有する板バネとを含み、
前記入射開口部には、残光が入射する開口と前記半円状湾曲部が突出する開口とが形成され、
前記半円状湾曲部は、前記残光輝度検出用受光ケースを蓄光標識にセットしたときに前記入射開口部の内部に埋没されることを特徴とする蓄光輝度測定器。 From the light-receiving case for afterglow brightness detection with the remaining light intensity detecting light receiving unit, and the measuring device main body case having a measuring unit for receiving case for said residue light brightness detection is measured by calculating the possible and afterglow luminance detachable Become
The afterglow luminance detection light-receiving case has an incident opening through which afterglow enters ,
The the entrance opening, mechanical measurement start switch member for starting the measurement of the afterglow luminance is provided with a photoelectric conversion signal output toward the measuring unit from the afterglow luminance detecting light receiving unit,
The mechanical measurement start switch member includes a leaf spring having a semicircular curved portion and a leaf spring having an inclined piece portion,
The incident opening is formed with an opening through which afterglow is incident and an opening through which the semicircular curved portion protrudes,
The semicircular curved portion, luminous intensity measuring instrument, characterized in Rukoto is buried in the interior of the entrance opening when the afterglow luminance detecting light-receiving casing was set in storing sign.
前記測定器本体ケースは、前記照度検出用受光ケースが装着されたときには照度の測定を実行し、前記紫外線強度検出用受光ケースが装着されたときには紫外線強度の測定を実行することを特徴とする請求項１に記載の蓄光輝度測定器。 In the measuring instrument body case, a light receiving case for detecting illuminance and a light receiving case for detecting ultraviolet intensity can be attached and detached,
The measuring device main body case, when the illuminance detection light-receiving casing is mounted performs the measurement of illuminance, characterized that you perform the measurement of ultraviolet intensity when said UV intensity detecting light-receiving casing is attached The luminous intensity measuring device according to claim 1.
前記残光輝度検出用受光ケースは、残光が入射する入射開口部を有し、
該入射開口部には、前記残光輝度検出用受光部から前記測定部に向けて出力された光電変換信号を用いて残光輝度の測定を開始させる機械式測定開始スイッチ部材が設けられ、
前記測定器本体ケースには、照度検出用受光ケースと紫外線強度検出用受光ケースとが着脱可能であり、
前記測定器本体ケースは、前記照度検出用受光ケースが装着されたときには照度の測定を実行し、前記紫外線強度検出用受光ケースが装着されたときには紫外線強度の測定を実行することを特徴とする蓄光輝度測定器。 An afterglow luminance detection light-receiving case having an afterglow luminance detection light-receiving unit, and a measuring instrument main body case having a measurement unit that is detachable from the afterglow luminance detection light-receiving case and calculates and measures the afterglow luminance Become
The afterglow luminance detection light-receiving case has an incident opening through which afterglow enters,
The incident opening is provided with a mechanical measurement start switch member that starts measurement of afterglow luminance using a photoelectric conversion signal output from the afterglow luminance detection light receiving unit toward the measurement unit,
The front Symbol measuring device main body case, a light receiving case and ultraviolet intensity detecting light-receiving case for illumination detection is detachable,
Before SL instrument body case, when the illuminance detection light-receiving casing is mounted performs the measurement of illuminance, to and executes the measurement of ultraviolet intensity when said UV intensity detecting light-receiving casing is attached 蓄 light intensity measuring instrument that.
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| JP2004309314A (en) * | 2003-04-07 | 2004-11-04 | Fukui Masaya | Fluorescence-detection head, fluorescence-detecting apparatus, and fluorescence detection system |
| JP4783109B2 (en) * | 2005-10-05 | 2011-09-28 | 京都電子工業株式会社 | Luminous intensity measuring instrument |
| JP2007114038A (en) * | 2005-10-20 | 2007-05-10 | Agilent Technol Inc | Color sensor system |
| JP2008032457A (en) * | 2006-07-27 | 2008-02-14 | Olympus Corp | Substrate inspecting device and lamp unit used therein |
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| JP5353826B2 (en) * | 2010-06-11 | 2013-11-27 | コニカミノルタ株式会社 | Residual luminance measuring device and residual luminance measuring system |
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