Oxygen meter convenient to operate

Abstract

The invention discloses an oxygen meter convenient to operate, which comprises an oxygen meter body and a remote control handle, and telescopic pipe rods are fixedly arranged on the outer side of the oxygen meter body close to the two ends. Belongs to the technical field of oxygen meter structures, the arranged telescopic pipe rod enables the oxygen meter to be placed in pipelines with different thicknesses, the power frame wheel can drive the oxygen meter to move back and forth in the pipelines so that the oxygen meter can reach a specified oxygen measuring area in the pipelines, and the arranged oxygen meter body can be bent under the action of external force so that the oxygen meter can be placed in the pipelines. The oxygen measuring instrument can adapt to pipelines with different bending shapes through the oxygen measuring instrument body, air in an oxygen measuring area can more quickly enter the oxygen measuring instrument to be detected through the arranged air inlet funnel, the tested air is exhausted out of the pipeline along the exhaust pipe, the detection result is prevented from being influenced, and the detection efficiency is improved. The arranged remote control handle enables a display screen, a control key and an indicating lamp which are originally arranged on the surface of the surveying and mapping instrument to be combined on the handle, so that the surveying and mapping instrument is more convenient and flexible to control.

Description

Technical Field

[0001] This invention relates to the field of oxygen analyzer structure technology, and in particular to an oxygen analyzer that is easy to operate. Background Technology

[0002] Oxygen analyzers are widely used in various industries such as oil extraction, petrochemicals, pipeline oil transportation, metal smelting, thermal power generation, ceramics, and cement, as well as in various boilers and kilns for urban centralized heating. There are also oxygen analyzers for fire safety, and others for medical equipment and the environment. Oxygen analyzers for flue gas can measure the residual oxygen content in flue gas, thereby controlling the combustion state of various combustion equipment to the optimal level, effectively saving fuel, controlling stable and economical equipment operation, and extending equipment lifespan. Oxygen analyzers for fire protection are intrinsically safe detection and alarm instruments that continuously detect oxygen concentration. The detector uses natural diffusion to detect ambient gases. Oxygen analyzers for medical equipment and the environment measure the oxygen concentration in medical equipment and environments. They are suitable for monitoring the oxygen concentration in air-oxygen mixers, anesthesia machines, incubators, oxygen masks, ventilators, nebulizers, and other similar instruments.

[0003] However, existing oxygen analyzers have certain drawbacks in use. Traditional oxygen analyzers cannot be placed inside pipes of different diameters to move to the designated oxygen measurement area for testing. The main body of the oxygen analyzer cannot bend and cannot adapt to pipes with different bends. The air inlet of the oxygen analyzer is too small, making it inconvenient to absorb air from the oxygen measurement area for testing. There is no exhaust pipe on the exhaust port, so the gas after testing cannot be discharged outside the oxygen measurement area. In addition, the display screen, control keys and indicator lights of the oxygen analyzer are all located on its surface, making the operation process inconvenient and inflexible. Summary of the Invention

[0004] The main objective of this invention is to provide an oxygen analyzer that is easy to operate and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An easy-to-operate oxygen analyzer includes an oxygen analyzer body and a remote control handle. Telescopic tubes are fixedly installed on the outer side of the oxygen analyzer body near both ends. A power frame wheel is fixedly installed on the end of the telescopic tubes away from the oxygen analyzer body. A connecting wire is fixedly connected between the rear end of the oxygen analyzer body and the middle of the front surface of the remote control handle. An exhaust pipe is movably connected to the rear end of the oxygen analyzer body, and an air inlet funnel is movably installed at the front end of the oxygen analyzer body.

[0007] Preferably, the oxygen analyzer body includes an oxygen analyzer front end, an oxygen analyzer rear end, an air inlet pipe connector, an air outlet pipe connector, a charging interface, a fixing ring, a No. 1 spring, and a telescopic sleeve.

[0008] Preferably, the oxygen analyzer has an air inlet connector at the center of its front surface and an air outlet connector at the center of its rear surface. A charging port is located at the lower end of the rear surface of the oxygen analyzer. Fixed rings are fixedly installed on the rear surface of the front end and the front surface of the rear end of the oxygen analyzer. A first spring is fixedly connected between the fixed rings near the inner side, and a telescopic sleeve is fixedly installed between the fixed rings near the outer side.

[0009] Preferably, the telescopic tube includes an outer tube, an inner liner tube, and a second spring. The outer tube is sleeved on the outside of the inner liner tube, and the second spring is sleeved on the outside of the outer tube. The rear end of the outer tube is fixedly connected to the outer end of the front end and the rear end of the oxygen analyzer, respectively. The rear end of the second spring is fixedly connected to the rear end of the outer tube, and the front end of the second spring is fixedly connected to the front end of the inner liner tube.

[0010] Preferably, the power frame wheel includes an H-shaped plate frame, a C-shaped plate, a guide rail through hole, a circular through hole, a first bearing, an inner bushing, an electric motor, a fixing sleeve, a first roller, a second bearing, a central shaft, and a second roller.

[0011] Preferably, the C-shaped plate is fixedly installed at the front end of the H-shaped plate frame, the guide rail through hole is opened on the side of the H-shaped plate frame near the rear end, the circular through hole is opened on the side of the H-shaped plate frame near the front end, the first bearing is located inside the guide rail through hole, the inner bushing is secured inside the first bearing, the electric motor is located inside the guide rail through hole, the fixing sleeve is fixedly installed on the upper end of the electric motor, the first roller is fixedly installed on the upper surface of the inner bushing, the second bearing is fixedly installed inside the circular through hole, the central shaft is fixedly installed inside the second bearing, the second roller is fixedly installed on the upper end of the central shaft, and the rear end of the fixing sleeve is fixedly connected to the front end of the inner bushing tube.

[0012] Preferably, the exhaust pipe includes a nut, a first rubber ring, and an exhaust hose. The first rubber ring is attached to the front surface of the nut, the front end of the exhaust hose is fixedly connected to the rear end of the nut, and the nut is sleeved on the outside of the air outlet pipe joint.

[0013] Preferably, the air intake funnel includes an air intake fan, an air intake hopper, an air intake plate, a screw through hole, and a No. 2 rubber ring. The air intake hopper is fixedly installed at the rear end of the air intake fan, the air intake plate is fixedly installed at the front end of the air intake fan, the screw through hole is opened at the rear end of the air intake hopper, the No. 2 rubber ring is attached to the rear surface of the air intake hopper, and the air intake hopper is sleeved on the front end of the air outlet pipe connector through the screw through hole.

[0014] Preferably, the remote control handle includes a handle body, status indicator lights, a display screen, a power menu button, a built-in printer, up, down, left, and right buttons, a joystick, and an alarm indicator light.

[0015] Preferably, the handle body is fixedly connected to one end of the connecting wire, the status indicator light is fixedly installed on the rear surface of the handle body, the display screen is fixedly installed in the middle of the upper surface of the handle body, the power menu button is located on the upper surface of the handle body, the built-in printer is embedded and fixedly installed on the upper surface of the handle body, the up, down, left, and right buttons are located on the upper surface of the handle body, the joystick is movably installed on the upper surface of the handle body, the alarm indicator light is located on the upper surface of the handle body, the power menu button is located in front of the display screen, the built-in printer is located in front of the power menu button, the up, down, left, and right buttons are located on one side of the display screen, the joystick is located on the other side of the display screen, and the alarm indicator light is located in front of the up, down, left, and right buttons and the joystick.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The telescopic tube rod and the power frame wheel are designed so that the oxygen analyzer can be placed inside pipes of different diameters via the telescopic tube rod, and the power frame wheel can drive the oxygen analyzer to move back and forth inside the pipe so that the oxygen analyzer can reach the designated oxygen measurement area inside the pipe.

[0018] 2. The oxygen meter body is designed to bend under external force, allowing the oxygen meter to adapt to pipes with different bending shapes.

[0019] 3. The exhaust pipe and air inlet funnel are designed so that air in the oxygen measurement area can enter the oxygen analyzer more quickly for testing. After testing, the gas is discharged out of the pipe along the exhaust pipe to avoid affecting the test results.

[0020] 4. The remote control handle is designed to combine the display screen, control keys and indicator lights that were originally located on the surface of the surveying instrument with the handle, making the surveying instrument more convenient and flexible to control. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an oxygen analyzer that is easy to operate according to the present invention;

[0022] Figure 2 This is an exploded view of the oxygen analyzer body structure of an easy-to-operate oxygen analyzer according to the present invention.

[0023] Figure 3 This is an exploded view of the telescopic tube structure of an oxygen analyzer that is easy to operate according to the present invention.

[0024] Figure 4This is an exploded view of the power frame wheel structure of an oxygen analyzer that is easy to operate according to the present invention;

[0025] Figure 5 This is a partial exploded view of the exhaust pipe end of an oxygen analyzer that is easy to operate according to the present invention.

[0026] Figure 6 This is an exploded view of the air inlet funnel structure of an oxygen analyzer that is easy to operate according to the present invention.

[0027] Figure 7 This is a schematic diagram of the remote control handle structure of an oxygen analyzer that is easy to operate according to the present invention;

[0028] Figure 8 This invention provides an easy-to-operate oxygen analyzer. Figure 1 Enlarged diagram of part A in the middle;

[0029] Figure 9 This invention provides an easy-to-operate oxygen analyzer. Figure 1 Enlarged schematic diagram of part B in the middle.

[0030] In the diagram: 1. Oxygen analyzer body; 101. Oxygen analyzer front end; 102. Oxygen analyzer rear end; 103. Air inlet pipe connector; 104. Air outlet pipe connector; 105. Charging interface; 106. Fixing ring; 107. Spring No. 1; 108. Telescopic sleeve; 2. Telescopic rod; 201. Outer sleeve; 202. Inner liner; 203. Spring No. 2; 3. Power frame wheel; 301. H-shaped plate frame; 302. C-shaped plate; 303. Guide rail through hole; 304. Circular through hole; 305. Bearing No. 1; 306. Inner liner; 307. Electric motor; 308. Fixing sleeve; 309. No. 1 310. Roller; 311. Bearing No. 2; 312. Central shaft; 313. Roller No. 2; 4. Connecting wire; 5. Exhaust pipe; 501. Nut; 502. Rubber ring No. 1; 503. Exhaust hose; 6. Intake funnel; 601. Intake fan; 602. Intake hopper; 603. Intake plate; 604. Screw through hole; 605. Rubber ring No. 2; 7. Remote control handle; 701. Handle body; 702. Status indicator light; 703. Display screen; 704. Power menu button; 705. Built-in printer; 706. Up, down, left, and right buttons; 707. Joystick; 708. Alarm indicator light. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figure 1 - Figure 9As shown, an easy-to-operate oxygen analyzer includes an oxygen analyzer body 1 and a remote control handle 7. Telescopic tube rods 2 are fixedly installed on the outer side of the oxygen analyzer body 1 near both ends. A power frame wheel 3 is fixedly installed on the end of the telescopic tube rod 2 away from the oxygen analyzer body 1. A connecting wire 4 is fixedly connected between the rear end of the oxygen analyzer body 1 and the middle of the front surface of the remote control handle 7. An exhaust pipe 5 is movably connected to the rear end of the oxygen analyzer body 1. An air inlet funnel 6 is movably installed at the front end of the oxygen analyzer body 1.

[0033] An easy-to-operate oxygen analyzer mainly includes an oxygen analyzer movement system, an oxygen analyzer body bending system, and an oxygen analyzer air intake and exhaust system. The actual operation of this system is as follows: First, the compressed telescopic rod 2 places the oxygen analyzer body 1 into a narrow oxygen measurement space such as a pipe; then, the remote control handle 7 allows for better control of the oxygen analyzer, and the power frame wheel 3 drives the oxygen analyzer body 1 to move forward and backward to the designated oxygen measurement area; next, the air intake funnel 6 fills the oxygen analyzer body 1 with air for detection; finally, the detected gas is discharged from the oxygen measurement area along the exhaust pipe 5.

[0034] like Figure 1 - Figure 2 As shown, in this embodiment, in order to enable the oxygen analyzer to bend and move better within the pipeline, the oxygen analyzer body 1 includes an oxygen analyzer front end 101, an oxygen analyzer rear end 102, an air inlet pipe connector 103, an air outlet pipe connector 104, a charging interface 105, a fixing ring 106, a first spring 107, and a telescopic sleeve 108. The air inlet pipe connector 103 is located at the center of the front surface of the oxygen analyzer front end 101, the air outlet pipe connector 104 is located at the center of the rear surface of the oxygen analyzer rear end 102, and the charging interface 105 is located at the lower end of the rear surface of the oxygen analyzer rear end 102. The fixing ring 106 is fixedly installed on the rear surface of the oxygen analyzer front end 101 and the front surface of the oxygen analyzer rear end 102. The first spring 107 is fixedly connected between the fixing rings 106 near the inner side, and the telescopic sleeve 108 is fixedly installed between the fixing rings 106 near the outer side.

[0035] The specific operation is as follows: In the oxygen analyzer body 1, the first spring 107 and the telescopic sleeve 108 can be bent under the action of external force, so that the oxygen analyzer body 1 can adapt to the curved pipe.

[0036] like Figure 1 - Figure 4As shown, in this embodiment, in order for the oxygen analyzer to adapt to pipes of different diameters and move along the pipes, the telescopic rod 2 includes an outer sleeve 201, an inner liner 202, and a second spring 203. The outer sleeve 201 is fitted over the outer side of the inner liner 202, and the second spring 203 is fitted over the outer side of the outer sleeve 201. The rear end of the outer sleeve 201 is fixedly connected to the outer side of the front end 101 and the rear end 102 of the oxygen analyzer, respectively. The rear end of the second spring 203 is fixedly connected to the rear end of the outer sleeve 201, and the front end of the second spring 203 is fixedly connected to the front end of the inner liner 202. The power frame wheel 3 includes an H-shaped plate frame 301, a C-shaped plate 302, a guide rail through hole 303, a circular through hole 304, a first bearing 305, an inner liner 306, an electric motor 307, a fixed sleeve 308, a first roller 309, a second bearing 310, and a center... Shaft 311 and roller 312; C-shaped plate 302 is fixedly installed at the front end of H-shaped plate frame 301, guide rail through hole 303 is opened on the side of H-shaped plate frame 301 near the rear end, circular through hole 304 is opened on the side of H-shaped plate frame 301 near the front end, bearing 305 is located inside guide rail through hole 303, inner bushing 306 is clamped inside bearing 305, electric motor 307 is located inside guide rail through hole 303, fixed sleeve 308 is fixedly installed on the upper end of electric motor 307, roller 309 is fixedly installed on the upper surface of inner bushing 306, bearing 310 is fixedly installed inside circular through hole 304, central shaft 311 is fixedly installed inside bearing 310, roller 312 is fixedly installed on the upper end of central shaft 311, and the rear end of fixed sleeve 308 is fixedly connected to the front end of inner bushing tube 202;

[0037] The specific operation is as follows: In the telescopic tube rod 2 and the power frame wheel 3, the inner liner tube 202 is pressed into the inside of the outer sleeve tube 201, and the second spring 203 is compressed. After the oxygen meter body 1 is placed into the pipeline, the inner liner tube 202 is released, and the second spring 203 returns to its original state, so that the second roller 312 is pressed against the inner wall of the pipeline, and the first roller 309 is pressed firmly against the surface of the second roller 312. The electric motor 307 drives the inner liner sleeve 306 to rotate, and the rotation of the first roller 309 drives the second roller 312 to rotate. Then the oxygen meter body 1 moves along the inner wall of the pipeline.

[0038] like Figure 1 - Figure 6As shown, in this embodiment, in order to allow air to enter the oxygen analyzer more easily and improve the detection effect, and to discharge the detected gas out of the pipeline with the exhaust pipe 5, the exhaust pipe 5 includes a nut 501, a first rubber ring 502, and an exhaust hose 503. The first rubber ring 502 is attached to the front surface of the nut 501, and the front end of the exhaust hose 503 is fixedly connected to the rear end of the nut 501. The nut 501 is sleeved on the outside of the air outlet connector 104; the air inlet funnel 6 includes an intake fan 601, an intake hopper 602, an intake disc 603, a screw through hole 604, and a second rubber ring 605. The intake hopper 602 is fixedly installed at the rear end of the intake fan 601, the intake disc 603 is fixedly installed at the front end of the intake fan 601, the screw through hole 604 is opened at the rear end of the intake hopper 602, the second rubber ring 605 is attached to the rear surface of the intake hopper 602, and the intake hopper 602 is sleeved on the front end of the air outlet pipe connector 104 through the screw through hole 604.

[0039] The specific operation is as follows: In the exhaust pipe 5 and the air inlet funnel 6, the air intake fan 601 draws the air in the oxygen measurement area of ​​the pipe into the interior of the oxygen meter body 1 along the inner wall of the air intake plate 603 and the air inlet funnel 602. Then, the air inside the oxygen meter body 1 after detection passes through the nut 501 and is discharged to the outside of the pipe along the exhaust hose 503. By rotating the nut 501 and the air inlet funnel 602, the exhaust pipe 5 and the air inlet funnel 6 can be removed. The first rubber ring 502 and the second rubber ring 605 play a sealing role.

[0040] like Figure 1 - Figure 7 As shown, in this embodiment, in order for the oxygen analyzer to adapt to pipes of different diameters and move along the pipes, the remote control handle 7 includes a handle body 701, a status indicator light 702, a display screen 703, a power menu button 704, a built-in printer 705, up / down / left / right buttons 706, a joystick 707, and an alarm indicator light 708. The handle body 701 is fixedly connected to one end of the connecting wire 4, the status indicator light 702 is fixedly installed on the rear surface of the handle body 701, the display screen 703 is fixedly installed in the middle of the upper surface of the handle body 701, and the power menu button 704 is located on the handle body 701. On the surface, the built-in printer 705 is embedded and fixedly installed on the upper surface of the handle body 701. The up, down, left, and right buttons 706 are located on the upper surface of the handle body 701. The joystick 707 is movably installed on the upper surface of the handle body 701. The alarm indicator light 708 is located on the upper surface of the handle body 701. The power menu button 704 is located in front of the display screen 703. The built-in printer 705 is located in front of the power menu button 704. The up, down, left, and right buttons 706 are located on one side of the display screen 703. The joystick 707 is located on the other side of the display screen 703. The alarm indicator light 708 is located in front of the up, down, left, and right buttons 706 and the joystick 707.

[0041] The specific operation is as follows: In the remote control handle 7, the status indicator light 702, the display screen 703, the power menu button 704, the built-in printer 705, the up, down, left and right buttons 706, the joystick 707 and the alarm indicator light 708 are all set on the handle body 701, making it more convenient and flexible to control the surveying instrument.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, various modifications can be made to it without departing from the scope of the present invention, and equivalent components can be replaced with equivalents or some technical features can be equivalently replaced. All modifications and modifications within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An easy-to-operate oxygen analyzer, characterized in that: The device includes an oxygen meter body (1) and a remote control handle (7). A telescopic tube rod (2) is fixedly installed on the outer side of the oxygen meter body (1) near both ends. A power frame wheel (3) is fixedly installed on the end of the telescopic tube rod (2) away from the oxygen meter body (1). A connecting wire (4) is fixedly connected between the rear end of the oxygen meter body (1) and the middle of the front surface of the remote control handle (7). An exhaust pipe (5) is movably connected to the rear end of the oxygen meter body (1). An air inlet funnel (6) is movably installed at the front end of the oxygen meter body (1).

2. The easy-to-operate oxygen analyzer according to claim 1, characterized in that: The oxygen analyzer body (1) includes an oxygen analyzer front end (101), an oxygen analyzer rear end (102), an air inlet pipe connector (103), an air outlet pipe connector (104), a charging interface (105), a fixing ring (106), a No. 1 spring (107), and a telescopic sleeve (108).

3. The convenient oxygen analyzer according to claim 2, characterized in that: An air inlet connector (103) is provided at the center of the front surface of the oxygen analyzer front end (101), an air outlet connector (104) is provided at the center of the rear surface of the oxygen analyzer rear end (102), a charging interface (105) is provided at the lower end of the rear surface of the oxygen analyzer rear end (102), a fixing ring (106) is fixedly installed on the rear surface of the oxygen analyzer front end (101) and the front surface of the oxygen analyzer rear end (102), a first spring (107) is fixedly connected between the fixing rings (106) near the inner side, and a telescopic sleeve (108) is fixedly installed between the fixing rings (106) near the outer side.

4. The convenient oxygen analyzer according to claim 3, characterized in that: The telescopic tube (2) includes an outer tube (201), an inner liner tube (202), and a second spring (203). The outer tube (201) is sleeved on the outside of the inner liner tube (202), and the second spring (203) is sleeved on the outside of the outer tube (201). The rear end of the outer tube (201) is fixedly connected to the outer end of the front end (101) and the rear end (102) of the oxygen analyzer, respectively. The rear end of the second spring (203) is fixedly connected to the rear end of the outer tube (201), and the front end of the second spring (203) is fixedly connected to the front end of the inner liner tube (202).

5. The easy-to-operate oxygen analyzer according to claim 4, characterized in that: The power frame wheel (3) includes an H-shaped plate frame (301), a C-shaped plate (302), a guide rail through hole (303), a circular through hole (304), a first bearing (305), an inner bushing (306), an electric motor (307), a fixed sleeve (308), a first roller (309), a second bearing (310), a central shaft (311), and a second roller (312).

6. The easy-to-operate oxygen analyzer according to claim 5, characterized in that: The C-shaped plate (302) is fixedly installed at the front end of the H-shaped plate frame (301). The guide rail through hole (303) is opened on the side of the H-shaped plate frame (301) near the rear end. The circular through hole (304) is opened on the side of the H-shaped plate frame (301) near the front end. The first bearing (305) is located inside the guide rail through hole (303). The inner bushing (306) is secured inside the first bearing (305). The electric motor (307) is located inside the guide rail through hole (303). The fixing sleeve (308) is fixedly installed on the upper end of the electric motor (307), the first roller (309) is fixedly installed on the upper surface of the inner bushing (306), the second bearing (310) is fixedly installed inside the circular through hole (304), the central shaft (311) is fixedly installed inside the second bearing (310), the second roller (312) is fixedly installed on the upper end of the central shaft (311), and the rear end of the fixing sleeve (308) is fixedly connected to the front end of the inner bushing (202).

7. The easy-to-operate oxygen analyzer according to claim 6, characterized in that: The exhaust pipe (5) includes a nut (501), a first rubber ring (502), and an exhaust hose (503). The first rubber ring (502) is attached to the front surface of the nut (501), the front end of the exhaust hose (503) is fixedly connected to the rear end of the nut (501), and the nut (501) is sleeved on the outside of the air outlet pipe joint (104).

8. The convenient oxygen analyzer according to claim 7, characterized in that: The air intake funnel (6) includes an air intake fan (601), an air intake hopper (602), an air intake plate (603), a screw through hole (604), and a second rubber ring (605). The air intake hopper (602) is fixedly installed at the rear end of the air intake fan (601), the air intake plate (603) is fixedly installed at the front end of the air intake fan (601), the screw through hole (604) is opened at the rear end of the air intake hopper (602), and the second rubber ring (605) is attached to the rear surface of the air intake hopper (602). The air intake hopper (602) is sleeved on the front end of the air outlet pipe connector (104) through the screw through hole (604).

9. The convenient oxygen analyzer according to claim 8, characterized in that: The remote control handle (7) includes a handle body (701), a status indicator light (702), a display screen (703), a power menu button (704), a built-in printer (705), up, down, left, and right buttons (706), a joystick (707), and an alarm indicator light (708).

10. The convenient oxygen analyzer according to claim 9, characterized in that: The handle body (701) is fixedly connected to one end of the connecting wire (4), the status indicator light (702) is fixedly installed on the rear surface of the handle body (701), the display screen (703) is fixedly installed in the middle of the upper surface of the handle body (701), the power menu button (704) is located on the upper surface of the handle body (701), the built-in printer (705) is embedded and fixedly installed on the upper surface of the handle body (701), the up, down, left, and right buttons (706) are located on the upper surface of the handle body (701), and the joystick (707) is movable. The alarm indicator light (708) is located on the upper surface of the handle body (701), the power menu button (704) is located in front of the display screen (703), the built-in printer (705) is located in front of the power menu button (704), the up, down, left, and right buttons (706) are located on one side of the display screen (703), the joystick (707) is located on the other side of the display screen (703), and the alarm indicator light (708) is located in front of the up, down, left, and right buttons (706) and the joystick (707).

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