JP2018040654A - Portable gas detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable gas detector which allows adequately illuminating more than one part in a dark place and ensuring a high operability when a light is turned on.SOLUTION: A gas detector 100 (portable gas detector) includes: a housing 1 which can be held by an operator; a gas collection unit for collecting a detection target gas into the housing 1; a gas detection unit 6 for detecting the detection target gas collected in the housing 1; a housing light 4; a front light 3; an input unit for receiving an operation input by the operator; and a control unit 7 for performing control to turn on the housing light 4 based on a first operation via the input unit and performing control to additionally turn on the front light 3 based on a second operation input after the first operation.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a portable gas detection device.

  Conventionally, portable gas detectors are known (see, for example, Patent Document 1).

  Patent Document 1 discloses a portable gas detector including a gas detector main body (housing) and a sampling tube (gas sampling unit) for collecting gas. This gas detector has a structure for collecting and detecting gas from the tip of the sampling tube. A light emitting part (illumination) is provided at the tip of the sampling tube so that the tip of the sampling tube and the inspected part in front (gas leak inspection point) can be confirmed even in the ground, in the tank, or in other dark places. ing. The light emitting unit is a light emitting diode or the like, and is turned on by a switch operation.

JP 2007-108128 A

  In the above-mentioned Patent Document 1, although it is possible to check the front end portion of the sampling tube (gas sampling portion) and the front inspection location away from the gas detector main body (housing) by the light emitting portion (illumination), for example, There is a problem that it is difficult to illuminate the display unit and the operation switch of the casing that the operator holds. In addition, when another illumination different from the illumination at the tip of the sampling tube is simply added, the switch operation of each of the plurality of illuminations becomes complicated, and the operability of the portable gas detection device in the usage situation in a dark place is reduced. There is a problem of getting worse. Deterioration in operability is not preferable because it not only reduces convenience but also causes erroneous operations.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to enable appropriate illumination in a plurality of places in a dark place, and at the time of lighting lighting. It is another object of the present invention to provide a portable gas detector capable of ensuring high operability.

  A portable gas detection device according to one aspect of the present invention detects a casing that can be gripped by an operator, a gas sampling unit that collects detection target gas in the casing, and a detection target gas collected in the casing. Based on the gas detection unit, the first illumination, the second illumination that irradiates light in a direction different from the first illumination, the input unit that receives an operation input from the operator, and the first operation via the input unit A control unit that performs control to turn on the first illumination and performs control to additionally light the second illumination based on the second operation continuously input from the first operation. The first illumination and the second illumination indicate illumination that can be brightened by irradiating light within a predetermined range, and do not include a simple indicator lamp (indicator lamp).

  In the portable gas detection device according to one aspect of the present invention, as described above, the first illumination and the second illumination that irradiates light in a direction different from the first illumination are provided. Thereby, even in a dark place, a sufficient amount of light is ensured by turning on the second illumination in addition to the first illumination, for example, the first illumination illuminates the operator's hand side, and the second illumination is the gas sampling unit. Since it is possible to illuminate the inspected portion on the front side, it is possible to appropriately illuminate a plurality of locations even in a dark place. Furthermore, control which performs the control which lights 1st illumination based on 1st operation via an input part, and performs control which additionally lights 2nd illumination based on 2nd operation continuously input from 1st operation is performed. By providing the unit, the operator can continuously input the second operation (lighting of the second illumination) as it is, following the input of the first operation of lighting the first illumination. As a result, unlike a case where a plurality of switches corresponding to each illumination needs to be operated separately, for example, the hand is uncertain due to lighting of a series of continuous operations (first operation and second operation). High operability can be obtained even in the dark. As described above, according to the present invention, it is possible to appropriately illuminate a plurality of places in a dark place, and it is possible to ensure high operability even when the lighting is turned on.

  In addition, according to the present invention, since high operability is ensured even in a dark place, it is possible to suppress erroneous operations even when performing the first operation and the second operation. Further, the first operation and the second operation can increase the light quantity of the illumination stepwise in the order of the lighting of the first illumination and the lighting of the first illumination and the second illumination. The amount of light can be easily secured as compared with the case where the illumination is alternatively turned on. Then, the first operation and the second operation can be used properly to enable illumination with a light amount as required.

  In the portable gas detection device according to the above aspect, the second illumination is preferably front illumination that irradiates light from the housing toward the distal end side of the gas sampling unit, and the first illumination is of the gas sampling unit. This is housing illumination that irradiates light on a housing side different from the front end side. Note that the case illumination that irradiates light on the case side not only irradiates light from the outside of the case toward the case, but also emits light on the case itself (inside or on the surface), thereby emitting light from the case. It is a broad concept including lighting that illuminates the surroundings. If comprised in this way, each of the to-be-inspected location of the front side of a gas sampling part and the housing | casing side which is an operator's hand side can be confirmed by a front illumination and housing | casing illumination also in a dark place. . Furthermore, since the first operation and the second operation light up in a stepwise manner in the order of the case illumination, the case illumination, and the front illumination, the illumination can be turned on in order from the hand side closer to the operator. As a result, after confirming the status of the gas detection device, it is possible to turn on the illumination according to the movement of the line of sight of the operator (from the hand to the front), which is the confirmation of the location to be inspected in front. Thus, the ease of use for the operator can be improved.

  In the portable gas detection device according to the above aspect, the input unit preferably includes one or a plurality of switches, and the control unit receives the first operation and the second operation using the same switch. It is configured. If comprised in this way, since it becomes possible to perform 1st operation and 2nd operation by one common switch operation, the erroneous operation in a dark place can be suppressed more reliably. In particular, if there are multiple switches and you can't see your hand in the dark, operating different switches is likely to cause incorrect operations, but it is only necessary to operate one common switch. Can be suppressed. Further, since only one switch needs to be operated, the operability can be easily improved.

  In this case, preferably, the first operation is an operation of continuing the switch input for the first time, and the second operation is the input of the first operation for the second time longer than the first time. This is an operation of continuously inputting a switch even after confirmation. If comprised in this way, a series of continuous operation (1st operation and 2nd operation) will be attained by continuing inputting a switch. For example, in the case of operations such as the number of switch inputs (single click, double click) within a predetermined time, it is necessary to take your finger off the switch once, especially when gas detection work is performed with gloves on. Although it is easy, with the above-described configuration in which the switch is continuously input, a reliable operation can be performed without fear of an erroneous operation.

  In the portable gas detection device according to the above aspect, the control unit preferably turns on both the first illumination and the second illumination while the input via the input unit is continued after the second illumination is turned on. It is configured to let you. If comprised in this way, since the lighting state of 1st illumination and 2nd illumination will continue while continuing input operation, it becomes unnecessary to repeat 1st operation and 2nd operation many times. As a result, since the number of operations can be reduced, the occurrence of erroneous operations can be suppressed.

  In the portable gas detection device according to the above aspect, the control unit preferably includes the first illumination and the second illumination after the first preliminary time elapses after the input through the input unit is released after the second illumination is turned on. It is configured to turn off both of the two lights. If comprised in this way, even if it cancels input operation via an input part, a lighting state can be continued for a while (1st preliminary | backup time). As a result, for example, it is possible to secure time for performing confirmation of the next inspection location, and the convenience in a dark place can be further improved.

  In this case, preferably, when the second operation is not performed after the first illumination is turned on, the control unit turns off the first illumination after the second preliminary time shorter than the first preliminary time has elapsed. It is configured. If comprised in this way, even if it does not light a 2nd illumination, since the lighting state of a 1st illumination will continue during a 2nd preliminary | backup time, the time which checks the next operation location etc., for example can be ensured. it can. Here, for example, when the first illumination is illumination that illuminates the hand side (housing side), when the second illumination is not turned on, the operation location at hand and the state of the portable gas detector can be confirmed in a short time. Since there are many cases where it can be completed, unnecessary power consumption can be suppressed by continuing lighting for a second standby time shorter than the first standby time when the second illumination is turned on.

  In the portable gas detection device according to the above aspect, preferably, when the second operation is not performed after the first illumination is turned on, the control unit performs the second operation until the first illumination is turned off. It is configured not to accept. If comprised in this way, after the 1st operation will be decided, when the operator has unintentionally performed switch input etc., the 2nd illumination will not be additionally lit unintentionally. Thereby, it is possible to further suppress erroneous operations even under circumstances where erroneous operations are likely to occur, such as when wearing gloves.

  In the portable gas detection device according to the above aspect, the light amount of the second illumination is preferably larger than the light amount of the first illumination. With this configuration, the first illumination is turned on when a large amount of light is not required, such as confirmation of the hand (housing side), and the second illumination is additionally turned on particularly when confirmation is performed on the front side where a light amount is necessary. The amount of light can be maximized. Further, when the amount of light of the second illumination that illuminates the front side is large, if the second illumination is turned on before the first illumination that illuminates the hand side, the operation location of the portable gas detection device, such as a display screen, etc. However, the visibility of the operation location, the display screen, and the like may be reduced by the configuration in which the second illumination is additionally lit after the first illumination is turned on by the first operation and the second operation. Absent.

  In the configuration in which the first illumination is a housing illumination that irradiates light to a housing side different from the distal end side of the gas sampling unit, preferably, the first illumination further includes a display unit provided in the housing, Light is irradiated to a range including the display portion. If comprised in this way, since a display part can be visually recognized now reliably in a dark place by housing | casing illumination, the convenience in a dark place can further be improved.

  According to the present invention, as described above, there is provided a portable gas detection device that can appropriately illuminate a plurality of places in a dark place and can ensure high operability even when the illumination is turned on. Can be provided.

It is a perspective view which shows the gas detection apparatus by one Embodiment of this invention. It is a block diagram which shows the control structure of the gas detection apparatus by one Embodiment. It is a typical perspective view for demonstrating the state which the housing | casing illumination and the front illumination lighted by 2nd operation. It is a typical perspective view for demonstrating the state which the housing | casing illumination lighted by 1st operation. It is the figure which showed an example of the display part and the sensitivity indicator. It is a flowchart for demonstrating lighting control processing of housing | casing illumination and front illumination. It is the typical perspective view which showed the 1st modification of housing | casing illumination. It is the typical perspective view which showed the 2nd modification of housing | casing illumination.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  With reference to FIGS. 1-5, the structure of the gas detection apparatus 100 by one Embodiment of this invention is demonstrated. The gas detection device 100 is an example of a “portable gas detection device” in the claims.

  The gas detection device 100 according to the present embodiment is a portable gas detection device that detects a detection target gas and notifies the presence of the detection target gas. More specifically, as shown in FIG. 1, the gas detection device 100 is a handy type (portable) gas detection device that can be used by being held by an operator (user).

  The gas detection device 100 is suitably used, for example, for indoor and outdoor gas leak inspection (identification of gas leak location). For example, the gas detection device 100 can be used for a point to be inspected such as a pipe, the ground, or a gas appliance. The gas detection apparatus 100 is used not only outdoors at night but also in dark places (dark or dim places) such as inspection of indoor piping installation places (under the sink, under the floor, etc.).

(Configuration of gas detector)
As shown in FIG. 1, the gas detection device 100 includes a housing 1 that can be held by an operator. The housing 1 is provided with a gas sampling unit 2, a front illumination 3, a housing illumination 4, and an input unit 5. As shown in FIG. 2, the gas detection device 100 includes a gas detection unit 6 and a control unit 7 in the housing 1. The casing illumination 4 is an example of “first illumination” in the claims, and the front illumination 3 is an example of “second illumination” in the claims.

  As shown in FIG. 1, the housing 1 has a roughly prismatic shape. A gas sampling unit 2 and a front illumination 3 are provided on the upper surface 1a which is one end surface in the longitudinal direction (Z direction) of the housing 1. Hereinafter, the longitudinal direction (Z direction) of the housing 1 is referred to as the vertical direction, and the upper surface 1a side of the housing 1 is referred to as the upper side (Z1 direction), and the opposite side to the upper surface 1a is referred to as the lower side (Z2 direction). A grip 11 that is gripped by an operator is provided on the lower side of the housing 1.

  In the housing 1, an input unit 5 and a display unit 12 are provided on a front surface 1 b that is one side surface orthogonal to the upper surface 1 a. Hereinafter, among the short directions perpendicular to the Z direction, the side on which the input unit 5 and the display unit 12 are provided (Y1 direction) is referred to as the front 1b side, and the side opposite to the front 1b (Y2 direction) is referred to as the back side. .

  The gas collection unit 2 is configured to collect the detection target gas in the housing 1. The gas sampling unit 2 includes, on the upper surface 1a of the housing 1, an intake port 2a that communicates with the inside of the housing 1, and a sampling tube 2b that is detachably attached to the intake port 2a. The intake port 2 a is an introduction pipe portion protruding from the upper surface 1 a of the housing 1. The sampling tube 2b is provided so as to protrude upward (in the Z1 direction) from the upper surface 1a of the housing 1, and the tip end portion is open. The gas sampling unit 2 is connected to a suction pump 13 (see FIG. 2) provided inside the housing 1. When the suction pump 13 is driven, gas is sucked from the distal end portion (Z1 direction end portion) of the collection tube 2b, and the gas is collected into the housing 1 through the intake port 2a. Even in a state where the sampling tube 2b is removed and the intake port 2a is exposed, gas can be collected. As shown in FIG. 3, when the gas detection device 100 is used, the gas is sampled such that the tip of the gas sampling unit 2 (sampling tube 2 b) is pushed out toward the inspection site P. Hereinafter, in consideration of the state of use, the tip direction (Z1 direction) of the gas sampling unit 2 (sampling tube 2b) is referred to as “front”.

  With reference to FIG. 2, the gas detector 6 is configured to detect a detection target gas collected in the housing 1. The gas detection unit 6 is a gas detection element having a sensitive unit (not shown) provided so as to be in contact with the gas taken into the housing 1 by the gas sampling unit 2. As the gas detection element, for example, a hot-wire semiconductor sensor, a substrate semiconductor sensor, a contact combustion sensor, or the like is employed.

  Gases to be detected include flammable gases containing flammable components such as propane, isobutane, methane, hydrogen, and malodorous gases containing components that cause odors (sulfur compounds, amines, carboxylic acids, ketones, aldehydes, etc.) There are various gases such as volatile gas containing volatile components such as alcohol. A gas detection element is selected according to the kind of detection object gas. The gas detector 6 employs, for example, a hot-wire semiconductor sensor, and can detect combustible gas (LPG, city gas, etc.).

  Returning to FIG. 1, the front illumination 3 is configured to irradiate light from the housing 1 toward the distal end side of the gas sampling unit 2. That is, the front illumination 3 is provided on the upper surface 1a of the housing 1 and emits light substantially in the Z1 direction so as to include the distal end portion of the gas sampling unit 2. That is, when the gas detector 100 is used, light is emitted from the front illumination 3 toward the front. The front illumination 3 may diffuse light so that the center optical axis faces the Z1 direction and includes the tip of the gas sampling unit 2, or the center optical axis faces the tip of the gas sampling unit 2. You may incline from Z1 direction. As shown in FIG. 3, when used in a dark place, the operator visually turns on the front illumination 3 so that the point P to be inspected and the tip of the gas sampling unit 2 are visually recognized along with the tip of the gas sampling unit 2. it can. Although the front illumination 3 is comprised by the light emitting diode, for example, the kind of light source is not specifically limited. In the present embodiment, the light amount of the front illumination 3 is larger than the light amount of the housing illumination 4. Moreover, in this embodiment, the front illumination 3 is comprised as illumination which is additionally lit based on 2nd operation so that it may mention later.

  As shown in FIG. 1, the display unit 12 has a function of displaying various information of the gas detection device 100. The display unit 12 is disposed adjacent to the upper side (Z1 direction) of the input unit 5. The display unit 12 includes a liquid crystal display, and can display setting information and the like under the control of the control unit 7. In addition, a sensitivity indicator 14 indicating a setting state of the sensitivity level of gas detection is provided on the front surface 1b of the housing 1 so as to be adjacent to the side of the display unit 12.

  The casing illumination 4 is configured to irradiate light in a direction different from the front illumination 3. In the present embodiment, the housing illumination 4 is configured to irradiate light on the housing 1 side different from the distal end side of the gas sampling unit 2. More specifically, the casing illumination 4 is configured to irradiate light in a range including the display unit 12. In the configuration example of FIG. 1, the casing illumination 4 is configured to function as a backlight of the display unit 12 including a liquid crystal display. That is, the casing illumination 4 is arranged on the back side of the display unit 12 in the casing 1 and is configured to illuminate the periphery of the display unit 12 of the casing 1 by causing the display unit 12 to shine from the inside. As shown in FIG. 4, by turning on the housing illumination 4 in a dark place, the operator can easily have the operator's hand, such as the screen of the display unit 12, the input unit 5 near the display unit 12, and the sensitivity indicator 14. Can be visually recognized. In this embodiment, the housing | casing illumination 4 is comprised as an illumination lighted based on 1st operation so that it may mention later.

  Returning to FIG. 1, the input unit 5 has a function of receiving an operation input from the operator. The input unit 5 is disposed on the upper portion (Z1 side portion) of the grip portion 11. Specifically, the input unit 5 is disposed adjacent to the lower side (Z2 direction side) of the display unit 12 in the vicinity of the upper end of the gripping unit 11. The input unit 5 is arranged on the grip unit 11 so that the operator's fingers (particularly the thumb) are positioned in the vicinity of the input unit 5 in a state where the operator grips the grip unit 11.

  The input unit 5 includes one or a plurality of switches 15. In the present embodiment, the input unit 5 receives an input of a first operation for lighting the casing illumination 4 and an input of a second operation for additionally lighting the front illumination 3. In the configuration example of FIG. 1, the input unit 5 includes three switches 15 (15a, 15b, and 15c). In FIG. 1, each switch 15 is constituted by a mechanical push button switch, but may be another switch such as a touch sensor or a toggle switch.

  The arrangement and function of each switch 15 are not particularly limited. For example, in FIG. 1, the switch 15a is a power ON / OFF and sensitivity level switching operation switch, the switch 15b is a return and illumination operation switch for the suction pump 13, and the switch 15c. Is an alarm buzzer sound and operation sound switching operation switch. In the present embodiment, the switch 15b is provided at a position where the operator's thumb is placed when the operator grips the grip portion 11, for example. Thereby, the switch 15c is configured to be able to accept an operation input of illumination while keeping the position of the finger when the operator holds it.

  In addition, a notification lamp 16 and a speaker 17 (see FIG. 2) are provided on the top of the housing 1. The notification lamp 16 notifies the operator of the presence of the detection target gas by emitting light when detecting the detection target gas. The speaker 17 outputs a notification sound when detecting the detection target gas, and also outputs an operation sound when the switch 15 is input.

  As shown in FIG. 2, the control unit 7 controls the overall operation of the gas detection device 100. The control unit 7 includes a processor that performs arithmetic processing, and performs display control of the display unit 12, detection determination based on the output value of the gas detection unit 6, notification control at the time of detection, and the like according to a program stored in the storage unit 8. . Moreover, in this embodiment, the control part 7 is comprised so that the lighting control of the front illumination 3 and the housing | casing illumination 4 may be performed based on operation via the input part 5. FIG. Details of the lighting control will be described later.

  The storage unit 8 stores sensitivity level setting information (threshold value) for detection detection and setting information related to lighting control of the front illumination 3 and the casing illumination 4. The control unit 7 determines that the detection target gas has been detected when the output value of the gas detection unit 6 with respect to the gas collected through the gas collection unit 2 exceeds a threshold corresponding to the set sensitivity level. Then, an alarm operation (lamp lighting, notification sounding) is performed by the notification lamp 16 and / or the speaker 17. Each unit including the gas detection unit 6 and the control unit 7 operates by supplying power from the battery 9.

(Display contents on the display)
FIG. 5 shows a configuration example of the display unit 12 and the sensitivity indicator 14. The display part 12 displays the battery remaining amount information 21 of the gas detection apparatus 100, for example. The display unit 12 displays setting information of the gas detection device 100. For example, the display unit 12 includes notification sound setting information 22 indicating whether a notification sound (alarm buzzer) can be output when detecting the detection target gas, and operation sound setting information 23 indicating whether an operation sound can be output when the switch 15 is input. indicate. When the output of the notification sound or the operation sound is set to OFF (output impossible) by the switch 15c, the notification sound setting information 22 and the operation sound setting information 23 are not displayed. Moreover, the display part 12 displays the setting information of detection object gas. For example, the display unit 12 displays gas type information 24 (such as “LPG”) for each of “GAS1” and “GAS2” as detection target gases. Various other information can be displayed on the display unit 12, and when used, the various types of information are confirmed and set by the operator. The display content of the display unit 12 can be visually recognized even in a dark place by lighting the housing illumination 4.

  The sensitivity indicator 14 displays, for example, detection sensitivity settings of a plurality of levels (five levels in FIG. 5) from a high sensitivity setting to a low sensitivity setting. The sensitivity indicator 14 has individual display lamps 14a to 14e (not shown in FIG. 2) for each sensitivity level, and lights the display lamp corresponding to the sensitivity level set by the operator. It is possible to check which level of the display lamp is lit even in a dark place (relative position with other display lamps that are not lit) by turning on the casing illumination 4.

(Lighting control of front lighting and housing lighting)
Next, lighting control of the front illumination 3 and the casing illumination 4 will be described. In the present embodiment, control is performed to turn on the casing illumination 4 based on the first operation via the input unit 5, and the front illumination 3 is additionally lit based on the second operation continuously input from the first operation. It is configured to perform control. When the first operation is input, the control unit 7 turns on the casing illumination 4 as shown in FIG.

  The controller 7 adds the case illumination 4 to the case illumination 4 when the case illumination 4 is turned on (after the first operation is input) and the second operation is input without being interrupted. Further, the front illumination 3 is turned on (see FIG. 3). As described above, the gas detection device 100 starts from the state in which only the casing illumination 4 is turned on in accordance with a series of first and second operations that are continuously input (see FIG. 4). And it is comprised so that it may transfer in steps to the state (refer FIG. 3) which both the front illuminations 3 light.

  In the gas detection device 100, the first operation and the second operation can be input by common switch input. That is, in the present embodiment, the control unit 7 is configured to accept a first operation and a second operation using the same single switch 15. In the configuration example of FIG. 1, the first operation and the second operation are input by the same switch 15b. In the configuration example of FIG. 1, the switch 15 b to which the first operation and the second operation are input is configured as a common switch that can also perform an operation input for the return control of the suction pump 13 other than the lighting lighting control. The control unit 7 returns the suction pump 13 to stop the error of the suction pump 13 when water or the like is sucked from the gas sampling unit 2 or when the gas sampling unit 2 is blocked. The switch 15b also functions as a return (reset) switch when the suction pump 13 stops due to an error.

  The control unit 7 is configured to accept the first operation and the second operation according to the input duration time of the switch 15b. Specifically, the first operation is an operation of continuing the input of the switch 15b for the first time T1, and the second operation is the first operation for the second time T2 longer than the first time T1. This is an operation of continuing to input the switch 15b even after the input is confirmed.

  The first time T1 is not particularly limited, but is preferably a sufficiently short time from the viewpoint of operability. In the present embodiment, the first time T1 is set to 200 milliseconds, for example. On the other hand, when the switch 15b is turned on immediately after input (when T1≈0 seconds), erroneous operation is likely to occur. Therefore, the control unit 7 continues to input the switch 15b for the first time T1. To confirm the input of the first operation. If the operator keeps pressing the switch 15b for 200 milliseconds or more even in a dark place, the casing illumination 4 can be turned on and the display unit 12 and its peripheral part can be visually recognized.

  The second time T2 is not particularly limited as long as it is longer than the first time T1. From the viewpoint of preventing erroneous operation, it is preferable that the first time T1 and the second time T2 have a sufficient difference. The second time T2 is, for example, not less than twice the first time T1, and preferably not less than five times. In the present embodiment, the second time T2 is set to 1.5 seconds (1500 milliseconds), for example. On the other hand, if the second time T2 is too long, the time lag until lighting is increased, and therefore the second time T2 is preferably about 1 to 2 seconds. The control unit 7 determines the input of the second operation when the switch 15b is continuously input for the second time T2.

  The control unit 7 is configured to light both the casing illumination 4 and the front illumination 3 while the input via the input unit 5 is continued after the front illumination 3 is lit. That is, after the switch 15b is continuously input for the second time T2 and the input of the second operation is confirmed after the switch 15b is continuously input for the second time T2, the front illumination is performed while the input (pressing) of the switch 15b is continued. 3 and the lighting state of the casing illumination 4 are maintained.

  The control unit 7 is configured to turn off both the casing illumination 4 and the front illumination 3 after the first preliminary time T3 has elapsed after the input via the input unit 5 is canceled after the front illumination 3 is turned on. ing. That is, after the input of the second operation is confirmed, the control unit 7 starts time counting when the input (press) of the switch 15b is released, and the elapsed time from the input release of the switch 15b is the first preliminary time T3. The front illumination 3 and the housing illumination 4 are extinguished when reaching. Therefore, the control unit 7 turns on the front illumination 3 and the case illumination 4 with a time difference, and turns off both the front illumination 3 and the case illumination 4 simultaneously.

  Even when the input of the switch 15b is canceled, the first preliminary time T3 is preferably preliminarily lit in order for the operator to move to the next operation or the next inspection location P, for example. . In addition, if the first preliminary time T3 is set sufficiently long, a sufficient lighting duration time can be obtained even if the switch input is canceled immediately after the input of the second operation, in the case where the lighting for a long time is unnecessary. On the other hand, if the first preliminary time T3 is longer than necessary, unnecessary power consumption occurs. Therefore, in the present embodiment, the first preliminary time T3 is set to 10 seconds, for example.

  Note that after the switch input is continued for the first time T1 and the first operation is confirmed (after the casing illumination 4 is turned on), when the switch input is canceled before the second time T2 elapses, the second Only the casing illumination 4 is lit without confirming the operation. That is, when the input of the switch 15b is canceled during the first time T1 or more and less than the second time T2, only the casing illumination 4 is turned on.

  The control unit 7 is configured to turn off the casing illumination 4 after the second preliminary time T4, which is shorter than the first preliminary time T3, when the second operation is not performed after the casing lighting 4 is turned on. Has been. That is, when the casing lighting 4 is turned on without turning on the front lighting 3, the control unit 7 sets a spare time for continuing the lighting state after canceling the switch input to the front lighting 3 and the casing lighting 4. Make it shorter than when both are lit. In this case, the control unit 7 turns off the casing illumination 4 after the second preliminary time T4 has elapsed since the input via the input unit 5 was canceled.

  In the configuration in which the amount of light is increased in two stages (two stages of the casing illumination 4 and the casing illumination 4 + the front illumination 3) as in the present embodiment, the one-stage illumination of only the casing illumination 4 is selected by the operator. In such a case, there is a high probability that a large amount of light or long-time illumination is unnecessary. In particular, when the casing illumination 4 functions as a backlight of the display unit 12, for example, it may be turned on to confirm the screen display, and long-time lighting in that case is unnecessary. Therefore, from the viewpoint of suppressing power consumption, the second preliminary time T4 is set shorter than the first preliminary time T3. The second preliminary time T4 is, for example, half of the first preliminary time T3, and is set to 5 seconds.

  The control unit 7 is configured not to accept the second operation until the casing illumination 4 is turned off when the second operation is not performed after the casing illumination 4 is turned on. . That is, when the input time of the switch 15b is canceled during the first time T1 or more and less than the second time T2, the control unit 7 does not release the input until the second preliminary time T4 elapses. The second operation is not accepted. For this reason, even if only the case illumination 4 is turned on and then the operator re-inputs the switch 15b without intention, the front illumination 3 is not turned on until the case illumination 4 is turned off.

(Lighting control processing)
Next, the lighting control process by the control unit 7 will be described with reference to FIG. The lighting control process is a process of controlling lighting / extinguishing of the casing illumination 4 and the front illumination 3 based on an input operation via the operator's input unit 5 (switch 15b).

  In step S1 of FIG. 6, the control unit 7 determines whether or not the input has continued for the first time T1 from the start of the input of the switch 15b. When there is no input from the switch 15b or when the input from the switch 15b is not continued for the first time T1 (200 milliseconds) from the start, the control unit 7 repeats the process of step S1.

  The first operation is confirmed when the input of the switch 15b is continued during the first time T1. That is, when the input of the switch 15b continues during the first time T1, the control unit 7 proceeds to step S2 and turns on the casing illumination 4. As a result, as shown in FIG. 4, the operator checks the display unit 12 with the light of the casing illumination 4 even in the dark, and sets the remaining battery level and sensitivity of the display unit 12 before the gas leak test. Sound settings (alarm buzzer sound, operation sound) can be confirmed. If necessary, the operator can change the setting by operating each switch 15 of the input unit 5.

  Subsequently, in step S3, the control unit 7 determines whether or not the input has continued for the second time T2 from the start of the input of the switch 15b. That is, it is determined whether or not the input state of the switch 15b continues even after the casing illumination 4 is turned on and the duration has reached the second time T2 (1.5 seconds).

  When the input of the switch 15b continues during the second time T2, the second operation is confirmed. That is, when the input of the switch 15b continues during the second time T2, the control unit 7 proceeds to step S4 and turns on the front illumination 3. Thereby, as shown in FIG. 3, the operator can easily check the tip (opening) of the gas sampling unit 2 and the inspection location P by the light of the front illumination 3 even in a dark place, thereby facilitating the gas leakage inspection work. Can be done.

  In step S5, the control unit 7 determines whether or not the input of the switch 15b is released. When the input of the switch 15b is not released (when the input state is continued), the control unit 7 repeats the process of step S5 while the casing illumination 4 and the front illumination 3 are turned on.

  When the input of the switch 15b is released, the control unit 7 proceeds to step S6, and determines whether or not the first preliminary time T3 has elapsed since the input of the switch 15b was released. That is, the control unit 7 counts the first preliminary time T3 (10 seconds) while the lighting state of the casing illumination 4 and the front illumination 3 is continued even after the input of the switch 15b is released. The controller 7 repeats the process of step S6 until the first preliminary time T3 has elapsed. Thereby, for example, even if the inspection of the inspection location P in FIG. 3 is completed and the input of the switch 15b is released, the operator can confirm the next inspection location by the light of the front illumination 3.

  When the first preliminary time T3 has elapsed, the control unit 7 proceeds to step S7, turns off the casing illumination 4 and the front illumination 3, and ends the process.

  On the other hand, if the switch input is released before the second time T2 has elapsed in step S3, only the first operation is confirmed and the second operation is not confirmed, and the operation input is terminated. That is, when the input of the switch 15b is not continued after the first time T1 has elapsed until the second time T2 has elapsed, the control unit 7 advances the processing to step S8 without turning on the front illumination 3.

  In step S8, the control unit 7 determines whether or not the second preliminary time T4 has elapsed since the input of the switch 15b was released. That is, the control unit 7 counts the second preliminary time T4 (5 seconds) while keeping the lighting state of the casing illumination 4 (the front illumination 3 is turned off) even after the input of the switch 15b is released. The controller 7 repeats the process of step S8 until the second preliminary time T4 has elapsed. Since only time counting is performed in step S8, even when the switch 15b is input again until the second preliminary time T4 elapses, the control unit 7 does not accept the second operation.

  When the second preliminary time T4 has elapsed, the control unit 7 proceeds to step S9, turns off the casing illumination 4, and ends the process. As a result, the operator can quickly turn off the light after confirming the display content (such as the remaining battery level) on the display unit 12 in a short time as shown in FIG.

  As described above, the lighting control process of the present embodiment is performed.

(Effect of this embodiment)
In the present embodiment, the following effects can be obtained.

  In the present embodiment, as described above, the case illumination 4 and the front illumination 3 that irradiates light in a direction different from the case illumination 4 are provided. Thereby, even in a dark place, a sufficient amount of light is secured by turning on the front illumination 3 in addition to the housing illumination 4, the housing illumination 4 illuminates the operator's hand side, and the front illumination 3 is the gas sampling unit. 2 can be configured to illuminate the inspected place P on the front side, and thus appropriate illumination can be performed at a plurality of places even in a dark place. Furthermore, control which lights the housing | casing illumination 4 based on 1st operation via the input part 5 is performed, and control which additionally lights the front illumination 3 based on 2nd operation input continuously from 1st operation. By providing the control unit 7 to be performed, the operator can continuously input the second operation (lighting the front illumination 3) as it is, following the input of the first operation to light the casing illumination 4. . As a result, unlike the case where it is necessary to separately operate the plurality of switches 15b corresponding to each illumination, for example, the hand is uncertain due to the illumination lighting in a series of continuous operations (first operation and second operation). High operability can be obtained even in dark places. As described above, according to the gas detection device 100 of the present embodiment, it is possible to appropriately illuminate a plurality of places in a dark place, and it is possible to ensure high operability even when the lighting is turned on.

  Moreover, according to the gas detection apparatus 100 of this embodiment, since high operativity is ensured also in a dark place, it becomes possible to suppress erroneous operation also when performing 1st operation and 2nd operation. Furthermore, the light amount of the illumination can be increased stepwise by the first operation and the second operation in the order of lighting of the casing lighting 4 and lighting of the casing lighting 4 and the front lighting 3. As compared with the case where the front illumination 3 and the front illumination 3 are alternatively turned on, the amount of light can be easily secured. Then, the first operation and the second operation can be used properly to enable illumination with a light amount as required.

  Further, in the present embodiment, as described above, the front illumination 3 that irradiates light from the housing 1 toward the distal end side of the gas sampling unit 2 and the housing 1 side different from the distal end side of the gas sampling unit 2 A housing illumination 4 for irradiating light is provided. Thus, even in a dark place, the front illumination 3 and the housing illumination 4 are used to confirm each of the inspection location P on the front side of the gas sampling unit 2 and the housing 1 side on the operator's hand side. Can do. Further, since the case illumination 4, the case illumination 4, and the front illumination 3 are turned on step by step by the first operation and the second operation, it is possible to turn on the illumination sequentially from the side closer to the operator. it can. As a result, after confirming the state of the gas detection device 100, it is possible to turn on the illumination according to the movement of the line of sight of the operator (from the hand to the front), that is, confirm the front inspection location P, and the lighting order is reversed. Compared with, it is possible to improve the usability for the operator.

  In the present embodiment, as described above, the control unit 7 is configured so that one or more switches 15b are provided in the input unit 5 and the first operation and the second operation using the same switch 15b are accepted. To do. As a result, the first operation and the second operation can be performed by operating one common switch 15b, so that erroneous operations in a dark place can be more reliably suppressed. In particular, when there are a plurality of switches and the hand is not visible in the dark, an erroneous operation is likely to occur when operating different switches, but it is only necessary to operate one common switch 15b. It can be effectively suppressed.

  In the present embodiment, as described above, the first operation is an operation for continuing the input of the switch 15b for the first time T1, and the second operation is the second time T2 longer than the first time T1. In the meantime, it is assumed that the switch 15b is continuously input even after the input of the first operation is confirmed. Accordingly, a series of continuous operations (first operation and second operation) can be performed by continuing to input the switch 15b. For example, in the case of operations such as the number of times the switch 15b is input (single click or double click) within a predetermined time, it is necessary to release the finger once from the switch 15b. Although it is likely to occur, the above-described configuration in which the switch 15b is continuously input can perform a reliable operation without fear of an erroneous operation.

  Further, in the present embodiment, as described above, the control unit is configured to light both the housing illumination 4 and the front illumination 3 while the input via the input unit 5 is continued after the front illumination 3 is lit. 7 is configured. Thereby, while the input operation is continued, the lighting state of the case illumination 4 and the front illumination 3 is continued, so that it is not necessary to repeat the first operation and the second operation many times. As a result, since the number of operations can be reduced, the occurrence of erroneous operations can be suppressed.

  Further, in the present embodiment, as described above, after the front illumination 3 is turned on, both the case illumination 4 and the front illumination 3 are detected after the first preliminary time T3 has elapsed since the input via the input unit 5 was canceled. The control unit 7 is configured to turn off the light. Thereby, even after canceling the input operation via the input unit 5, the lighting state can be continued for a while (first preliminary time T3). As a result, for example, it is possible to secure time for performing confirmation of the next inspection location P and the convenience in the dark place is further improved.

  In the present embodiment, as described above, when the second operation is not performed after the lighting of the casing lighting 4, the casing lighting is performed after the second preliminary time T4 that is shorter than the first preliminary time T3. The control unit 7 is configured to turn off 4. Thereby, even when the front illumination 3 is not turned on, the lighting state of the casing illumination 4 continues during the second preliminary time T4, so that, for example, a time for checking the next operation location or the like can be secured. Here, for example, when the case illumination 4 is illumination that illuminates the hand side (the case 1 side), when the front illumination 3 is not turned on, the operation location at hand and the state of the portable gas detection device are only checked. Since there are many cases where only a short time is required, unnecessary power consumption can be suppressed by continuing lighting for a second preliminary time T4 shorter than the first preliminary time T3 when the front illumination 3 is lit. .

  In the present embodiment, as described above, when the second operation is not performed after the casing lighting 4 is turned on, the second operation is not accepted until the casing lighting 4 is turned off. The control unit 7 is configured as follows. As a result, after the first operation is confirmed, the front illumination 3 will not be additionally lit unintentionally when the operator unintentionally inputs the switch 15b. Thereby, it is possible to further suppress erroneous operations even under circumstances where erroneous operations are likely to occur, such as when wearing gloves.

  In the present embodiment, as described above, the light amount of the front illumination 3 is made larger than the light amount of the housing illumination 4. Thus, the case illumination 4 is turned on when a large amount of light is not required, such as confirmation of the hand (the case 1 side), and the front illumination 3 is additionally lit up particularly when confirmation is made on the front side where a light amount is necessary. Can be maximized. Further, when the front illumination 3 is turned on before the housing illumination 4 that illuminates the hand side when the amount of light of the front illumination 3 that illuminates the front side is large, the operation location of the gas detection device 100 (such as the input unit 5). ) And the display screen of the display unit 12 may be difficult to check. However, the front lighting 3 is additionally turned on after the case lighting 4 is turned on by the first operation and the second operation, so that the operation location and the display are displayed. The visibility of the screen or the like is not lowered.

  In the present embodiment, as described above, the display unit 12 is provided in the case 1, and the case illumination 4 that irradiates light in a range including the display unit 12 is provided. As a result, the housing illumination 4 allows the display unit 12 to be surely visually recognized even in a dark place, so that the convenience in the dark place can be further improved.

[Modification]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, the front illumination 3 is provided as an example of the first illumination in the claims, and the case illumination 4 is provided as an example of the second illumination in the claims. Is not limited to this. The first illumination of the present invention may be other illumination (illumination that irradiates light in other directions) other than the front illumination 3 that irradiates light toward the distal end side of the gas sampling unit 2, or the present invention. The second illumination may be other illumination than the case illumination 4. Moreover, in this invention, you may provide 3 or more illuminations, such as providing 3rd illumination in addition to 1st illumination and 2nd illumination.

  Moreover, in the said embodiment, although the example in which the housing | casing illumination 4 functions as a backlight of the display part 12 was shown, this invention is not limited to this. In the present invention, the housing illumination 4 may be provided as illumination other than the backlight, as in the first modification shown in FIG. In the first modified example of FIG. 7, the housing illumination 4 is provided on the protruding portion 101 that protrudes from the front surface 1 b in the upper portion of the housing 1. The housing illumination 4 is configured to irradiate light from the protruding portion 101 toward the front surface 1b (the display unit 12 and the input unit 5) of the housing 1.

  Moreover, the structure which irradiates light using the front illumination 3 or the housing | casing illumination 4 using a part of housing | casing 1 like the 2nd modification shown in FIG. In the second modified example of FIG. 8, the housing illumination 4 is disposed inside the housing 1 and irradiates light onto the window portion 102 provided on the front surface 1 b of the housing 1. The window part 102 has translucency, and the light from the casing illumination 4 in the casing 1 is irradiated to the periphery of the front surface 1 b through the window part 102. The window portion 102 may be made of, for example, a light diffusing material. In that case, light can be diffused and illuminated over a wide range including the display portion 12 and the input portion 5 on the front surface 1b.

  In addition, for example, when a self-luminous display is adopted as the display unit 12, the display unit 12 itself may be configured to function as the casing illumination 4.

  In the above-described embodiment, the configuration example in which the casing illumination 4 irradiates light to the range including the display unit 12 is shown, but the present invention is not limited to this. In the present invention, it is not necessary to irradiate light to the range in which the housing illumination 4 includes the display unit 12, and it is not necessary to provide a display unit in the gas detection device.

  Moreover, although the example which inputs 1st operation and 2nd operation using the same switch 15b was shown in the said embodiment, this invention is not limited to this. In the present invention, the first operation and the second operation may be input using a plurality of switches 15. In the present invention, the contents of the first operation and the second operation are not limited as long as the first operation and the second operation are continuously input.

  In the above-described embodiment, an example in which the first operation and the second operation are operations that continue the input of the same single switch 15b has been described, but the present invention is not limited to this. For example, the first operation may be a single click (one input operation of the switch 15), and the second operation may be a double click (an operation to input the switch 15 once more after the first operation).

  Moreover, although the said embodiment showed the example which lights up both the housing | casing illumination 4 and the front illumination 3 while the input via the input part 5 is continued after the lighting of the front illumination 3, the present invention showed that It is not limited to this. In the present invention, even if the input through the input unit 5 is continued after the front illumination 3 is turned on, each illumination may be turned off after a predetermined time has elapsed.

  In the above-described embodiment, the example in which the illumination is turned off after the first preliminary time T3 (or the second preliminary time T4) has elapsed since the input via the input unit 5 was canceled has been described. Not limited. In the present invention, after the lighting is turned on (after the first operation or the second operation is received), the lighting may be turned off immediately when the input of the input unit is released.

  Moreover, although the example which made the light quantity of the front illumination 3 larger than the light quantity of the housing | casing illumination 4 was shown in the said embodiment, this invention is not limited to this. In the present invention, the light amount of the front illumination 3 may be equal to or less than the light amount of the housing illumination 4.

  Moreover, although the input part 5 (switch 15) was arrange | positioned under the display part 12 (Z2 direction) in the said embodiment, this invention is not limited to this. For example, the display unit 12 and the input unit 5 (switch 15) may be arranged side by side in the horizontal direction orthogonal to the vertical direction at substantially the same position in the vertical direction (Z direction).

  Regarding the position of the input unit 5, it is preferable that the input unit 5 be disposed at a position where the operator's fingers can reach when the operator grips the gas detection device 100 (the gripping unit 11). By arranging the input unit 5 at such a position, the operator turns on the casing illumination 4 and the front illumination 3 while maintaining the arrangement position of the fingers when grasping the gas detection device 100 (gripping unit 11). The operation can be performed. Thereby, high operativity can be ensured about the lighting operation in a dark place, and generation | occurrence | production of a misoperation can be suppressed.

  In the gas detection device 100 of the present embodiment shown in FIG. 1, as described above, when the switch 15 b (input unit 5) that receives the illumination operation is gripped by the operator, the thumb of the operator It is preferable because it is provided at a position where it is placed, and an operation input of illumination can be received with the thumb position held by the operator. In the case of a configuration in which operation input is performed with a finger other than the thumb (index finger or the like), the switch 15b (input unit 5) may be disposed on the back side opposite to the display unit 12.

DESCRIPTION OF SYMBOLS 1 Case 2 Gas sampling part 3 Front illumination (2nd illumination)
4 Case illumination (first illumination)
DESCRIPTION OF SYMBOLS 5 Input part 6 Gas detection part 7 Control part 12 Display part 15 (15a, 15b, 15c) Switch 100 Gas detection apparatus (portable gas detection apparatus)
T1 1st time T2 2nd time T3 1st reserve time T4 2nd reserve time

Claims (10)

A housing that can be held by an operator;
A gas collecting unit for collecting the detection target gas in the housing;
A gas detection unit for detecting the detection target gas collected in the housing;
A first illumination, and a second illumination that irradiates light in a direction different from the first illumination;
An input unit for receiving an operation input from the operator;
Control to turn on the first illumination based on a first operation via the input unit, and control to additionally light the second illumination based on a second operation continuously input from the first operation. A portable gas detection device comprising a control unit for performing the operation. The second illumination is a front illumination that irradiates light from the housing toward the distal end side of the gas sampling unit,
The portable gas detection device according to claim 1, wherein the first illumination is a housing illumination that irradiates light on the housing side different from a distal end side of the gas sampling unit. The input unit includes one or more switches,
The portable gas detection device according to claim 1, wherein the control unit is configured to receive the first operation and the second operation using the same one switch. The first operation is an operation of continuing input of the switch for a first time,
The portable operation according to claim 3, wherein the second operation is an operation of continuously inputting the switch after the input of the first operation is confirmed for a second time longer than the first time. Gas detector.   The said control part is comprised so that both the said 1st illumination and the said 2nd illumination may be lighted, while the input via the said input part is continued after the said 2nd illumination is lighted. The portable gas detection device according to any one of 1 to 4.   The controller is configured to turn off both the first illumination and the second illumination after the first preliminary time elapses after the input through the input unit is released after the second illumination is turned on. The portable gas detection device according to claim 1, wherein the portable gas detection device is used.   The controller is configured to turn off the first illumination after a second preliminary time shorter than the first preliminary time if the second operation is not performed after the first illumination is turned on. The portable gas detection device according to claim 6.   The control unit is configured not to accept the second operation until the first illumination is turned off when the second operation is not performed after the first illumination is turned on. The portable gas detector according to any one of claims 1 to 7.   The portable gas detection device according to claim 1, wherein a light amount of the second illumination is larger than a light amount of the first illumination. A display unit provided in the housing;
The portable gas detection device according to claim 2, wherein the casing illumination irradiates light to a range including the display unit.

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