JP6169368B2 - Incense ignition device - Google Patents

Description

  The present invention relates to an incense ignition device, and more particularly to an incense ignition device that ignites using an electric heater.

  To raise the incense to the Buddhist altar, ignite the flame of the match directly close to the tip of the incense stick, or ignite the candle once with the flame of the match and then indirectly bring the tip of the incense stick close to the flame of the candle. It is customary to ignite. According to such an incense ignition method, when a match is rubbed, the flamed shaft breaks and falls, the match embers fall, or the fired shaft can be let go and let go and let it fall. Doing so may scorch the floor and tatami mats or ignite surrounding combustibles, and in the worst case there is a risk of fire. In particular, elderly people who often give incense sticks to the Buddhist altar are more likely to be at risk because their hands are handicapped and their visual acuity is often weak.

  As another incense ignition method, it is conceivable to use a gas writer for cigarette ignition or gas range ignition instead of a match. However, these types of gas writer have been used as a return spring for the ignition lever of the gas writer in recent years because it is so powerful that infants and lower grades cannot easily operate the lever to prevent mischief. Is difficult to handle even for the powerless elderly.

  In contrast, incense ignition devices that ignite by directly contacting an electric heater with an incense stick do not emit a flame unlike a gas writer, and an ignition lever having a strong return spring is also unnecessary, which is safe. Excellent in operability and operability.

Japanese Utility Model Publication No. 6-22763 JP 2003-185138 A Utility Model Registration No. 3089420

  Incense incandescent devices that ignite incense sticks one by one using an electric heater have been known (see Patent Document 1). According to the literature 1, the electric heater is energized in a state where the incense sticks are inserted one by one into a bottomed cylindrical container (enclosure) called an elongated enclosure having an electric heater disposed at the bottom thereof. By this, even in the windy outdoor, it can ignite the incense stick, and by detecting the insertion of the incense stick into the bottomed cylindrical container by the sensor, by controlling the energization timing to the electric heater, It is described that the incense of the incense stick can be automatically ignited only by performing the operation of inserting the incense stick.

  As another incense incense ignition device that ignites the incense sticks one by one using an electric heater, a bar heater formed by spirally winding an electric heating wire is adopted as the electric heater, and the circumferential side surface of the horizontal bar heater The tip of the incense stick is brought into contact with the rod heater so that it sticks perpendicularly to the rod heater, while the electric contact is opened and closed using the force of the incense stick thrust against the rod heater to automatically energize the electric heater. What is made to perform is known (refer patent document 2).

  As another incense incense ignition device that ignites the incense sticks one by one using an electric heater, an on-surface heater formed by winding a heating wire in a spiral shape is laid in a container having an open top surface, There is also known an apparatus in which an incense stick is erected to cause ignition by bringing the tip of the incense stick into contact with an electric heater (see Patent Document 3).

  The present invention has been made under the above-described technical background, and the purpose of the present invention is to allow easy operation of incandescent ignition even for incompetent things such as the elderly, while overturning and others. Even if the push button is pressed by itself due to contact with other objects, or if the push button continues to be pressed for a long time due to a child's mischief, etc., fire due to overheating of the electric heater, etc. An object of the present invention is to provide an incandescent ignition device capable of preventing the danger of the above.

  Other objects and operational effects of the present invention can be easily understood by those skilled in the art by referring to the following description of the specification.

  It is considered that the above technical problem can be solved by the incense ignition device having the following configuration.

That is, the incense stick ignition device of the present invention ignites the case, the incense stick insertion opening opened on the outer surface of the casing, and the tip of the incense stick inserted in the incense stick insertion opening. An electric heater, a momentary type pushbutton switch having a pushbutton exposed on the outer surface of the housing, and an electric circuit for intermittently energizing the electric heater in conjunction with an on / off operation of the pushbutton. , and a battery as a power source, and the electric circuit, while the pressing duration of the pushbuttons until exceeds the predetermined time, continuing the energization of the electric heater only during depression of the pushbutton, the A circuit operation for forcibly shutting off the power to the electric heater is incorporated when the pressing duration of the push button exceeds the predetermined time .

In addition, the return spring strength of the push button is set so weak that it can be easily pushed by a weak person such as an elderly person.

  According to such a configuration, a push button operation for incandescent ignition can be easily performed even by a weak person such as an elderly person, while the push button is pressed alone by a fall or contact with another object. Even when a situation occurs or when the push button is continuously pressed for a long time due to a child's mischief or the like, it is possible to prevent a danger such as a fire due to overheating of the electric heater.

  According to such a configuration, it is possible to further improve the convenience of users such as elderly people who often have an opportunity to raise an incense stick on the Buddhist altar while preventing an accident due to overheating of the electric heater.

  According to a preferred embodiment of the present invention, the end of the push button may protrude beyond the outer surface of the housing.

  According to such a configuration, it is possible to further improve the operability by providing a certain pressing feeling of the push button while preventing an accident due to overheating of the electric heater.

  According to a preferred embodiment of the present invention, the casing may be an upright stationary type, and the push button may be attached at any position on the peripheral side surface thereof.

  According to such a configuration, it is possible to manufacture an incandescent ignition device that is easy to use while preventing an accident due to overheating of the electric heater.

According to the present invention, a push button operation for incandescent ignition can be easily performed even by a weak person such as an elderly person, while there is a situation where the push button is pressed by itself due to a fall or contact with another object. If this happens, or if the push button continues to be pressed for a long time due to a child's mischief, etc., it is possible to prevent the danger of fire due to overheating of the electric heater . Until the pressing duration time reaches a predetermined time, it is possible to provide an incandescent ignition device that can avoid wasteful consumption of the battery by making use of the instantaneous operation instantaneous return function of the momentary pushbutton switch .

It is an external appearance perspective view of this invention apparatus. It is the front view and back view of this invention apparatus. It is the top view and bottom view of this invention apparatus. It is the left view and right view of this invention apparatus. It is the sectional view on the AA line which omitted the inside of the device of the present invention. It is a half-cut perspective view which expands and shows the principal part of this invention apparatus. It is a principal part expanded sectional view for demonstrating the effect | action of this invention apparatus (the 1). It is a principal part expanded sectional view (the 2) for statementing the effect | action of this invention apparatus. It is a perspective view which shows the use condition of this invention apparatus. It is an electric circuit diagram of the device of the present invention.

  Hereinafter, a preferred embodiment of the incense ignition device according to the present invention will be described in detail with reference to the accompanying drawings.

  An external perspective view of the device of the present invention is shown in FIG. As shown in the figure, the incandescent ignition device 1 has a plastic stationary housing 2 that has an appearance such that a cylindrical upper part and a truncated cone or skirt-like lower part are continuous. As shown in FIG. 2, the housing 2 is divided into a front housing portion 2a and a rear housing portion 2b, and the housing portions 2a and 2b are separated by a dividing line 4 as shown in FIG. In a state where the two face each other, after inserting screws (not shown) into the three screw insertion holes 4a, 4b, 4c provided in the rear side housing portion 2b to the back of the holes, By being screwed into the side housing portion 2a, they are coupled together. In this example, the casing 2 has a height of about 100 mm, an upper end diameter of about 50 mm, and a lower end diameter of about 65 mm. As shown in FIG. The size is set to fit.

  As shown in FIG. 5, the assembled housing 2 as a whole has a housing body having a peripheral side plate portion 21, a top plate portion 22, and a bottom opening 23, and a bottom opening 23 of the housing body. The lid plate 7 is configured to be fitted and can be opened and closed for battery replacement or the like by holding the knob 7a and performing a snap operation. Inside the housing 2, there are provided a lower chamber 25 occupying almost half from the bottom of the housing 2 and an upper chamber 26 occupying 1/5 from the top.

  The lower chamber 25 is hermetically sealed, and four AA batteries 10 in an upright state can be accommodated in parallel in the lower chamber 25, thereby reducing the center of gravity of the entire apparatus, thereby reducing the weight balance. Is being optimized. These dry batteries 10 are electrically connected in series to constitute a 6-volt DC power source. In the lower chamber 26, a switch mechanism 3a is further arranged. This switch mechanism 3a constitutes a momentary type (instantaneous operation instantaneous return type) push button switch, and an on / off operation is performed by a push button 3 (see FIG. 1) arranged at a suitable position in the lower front of the housing 2. It is possible. As will be described later, an SPDT contact (not shown) built in the switch mechanism 3a or an energizing switch linked thereto is a 6-volt DC power source and an electric heater 9 (see FIG. 5) formed by connecting four dry batteries in series. Therefore, energization from the DC power source to the electric heater 9 is performed only during the period in which the push button 3 is pressed.

The upper chamber 26 has a ventilation opening for ventilation. As shown in FIGS. 1 to 4, in this example, the vents are a front side slit group 5 consisting of eight slits 51 to 58 and a rear side slit group consisting of eight slits 61 to 68. 6. The front-side slits 51 to 58 each have a narrow width of about 3 mm in this example, and extend portions 51 a to 58 a that extend in the vertical direction along the front-side peripheral side plate portion 21 and the top plate portion 22. And extending portions 51b to 58b extending in the front-rear direction. Similarly, the rear side slits 61 to 68 each have a narrow width of about 3 mm in this example, and extend portions 61 a to 68 a extending in the vertical direction along the peripheral side plate portion 21 on the rear side and the ceiling. It is comprised from the extension parts 61b-68b extended in the front-back direction along the board part 22. As shown in FIG. As apparent from FIGS. 1 and 2, the eight slits 51 to 58 on the front side and the eight slits 61 to 68 on the rear side correspond to each other (for example, 51 and 61, 52 and 62). , 53 and 63, 54 and 64,...).

  As will be described later, these slits 51 to 58 and 61 to 68 supply sufficient air necessary for the ignition of the incense stick 12 around the electric heater 9 and strongly toward the front slit group 5. By blowing in air, a flow of air from the front side slit group 5 to the back side slit group 6 is generated, and the residual ash accumulated in the electric heater 9 can be blown out of the casing and removed. Further, since the electric heater 9 inside the housing faces the two slits 54 and 55 constituting the slit group 5 on the front side, the electric heater 9 is energized by pressing the push button 3. While monitoring the rising of white smoke from the vicinity of the electric heater 9, the ignition to the incense stick 12 is confirmed at an early stage, and the pressing to the push button 3 is immediately released, thereby reducing wasteful power consumption. Without it, battery life can be extended.

  An electric heater 9 is disposed at the center of the bottom of the upper chamber 26. In the illustrated example, as shown in FIG. 6, the electric heater 9 has heating wires (for example, a nichrome wire having a thickness of about 0.3 mm) at a predetermined pitch (for example, a pitch of 0.5 to 0.7 mm). A cylindrical coil electric heater is formed by spirally winding only five times. That is, the illustrated cylindrical coil-shaped electric heater 9 includes the uppermost (first stage) heating wire 91, the second heating wire 92, the third winding wire 93, and the fourth heating wire 94. , And the lowermost (fifth stage) circulating heating wire 95.

  The inner diameter of the cylinder formed by the cylindrical coiled electric heater 9 is larger than the standard outer diameter (for example, 2 to 3 mm) of the incense stick, and in this example, is set to about 3.5 to 4.5 mm. ing. In the example shown in the drawing, the diameter of the ring formed by the circulating heating wire is set to be gradually reduced, although gradually increasing from the upper stage to the lower stage, and the coil upper end opening 9a (see FIG. 7). While the incense stick 12 can be easily received into the coil inner cavity 9b (see FIG. 7), when the incense stick 12 is tilted, the lowermost heating wire 95 or the upper stage is used even if the tilt angle is small. It is devised so that it may contact with the surrounding heating wire 94-91 reliably.

  The cylindrical coil-shaped electric heater 9 is placed on a support base 24 made of heat-resistant plastic in a posture in which the central axis of the cylinder is vertical, and the same three heat-resistant plastic projections 24a, 24b, The cylindrical coil-shaped electric heater 9 is fixed so as not to be deformed or moved by contact with the lower end portion of the incense stick. In other words, in the cylindrical coil-shaped electric heater 9, one incense stick inserted from the insertion port 80 (see FIG. 7) is transferred from the cylindrical end surface opening 9a (see FIG. 7) to the cylindrical internal cavity 9b (see FIG. 7). And arranged in an acceptable posture.

  The incense stick 12 inserted into the cylindrical coil-shaped electric heater 9 abuts against the upper surface of the support base 24 and is prevented from further insertion. That is, the upper surface of the support base 24 functions as an incense stick insertion depth limiting member in this example. In addition, the method for restrict | limiting the insertion depth of the incense stick 12 is not restricted to this. For example, even when the lowermost heating wire 95 is deformed into a “letter shape” so as to cross the coil end face, the inserted incense stick 12 hits the heating wire crossing the coil end face and is inserted further. Is prevented. In addition, in this case, since the lower end surface of the incense stick 12 is in contact with the heater, the distal end portion of the incense stick 12 is heated not only from the outer peripheral surface but also from the lower end face as will be described later. Thus, the ignition reliability can be further improved.

  One terminal of the cylindrical coil-shaped electric heater 9 is wired to conduct to the terminal fitting 11a, and the other terminal is wired to conduct to the terminal fitting 11b. These terminal fittings 11a and 11b are electrically connected to the DC power source (dry battery 10) and the switch mechanism 3a through a conductive member (not shown), and the push button 3 is pushed as described above. The electric heater 9 is energized only during a certain period.

  As shown in FIG. 5, a funnel-shaped guide surface 82a (see FIG. 7) and a tunnel-shaped passage 81a are formed in the top plate portion 22 positioned directly above the cylindrical coil-shaped electric heater 9 so as to penetrate the top plate portion 22. A substantially cylindrical metal part (for example, copper, iron, aluminum part, etc.) 8 having (see FIG. 7) is disposed. The metal part 8 is fixed integrally with the housing so as to be sandwiched between the front end surfaces of the two cantilevered support members 27 and 27 that protrude from the front and rear walls in the upper chamber 26.

  As shown in FIG. 7, the metal part 8 has an inner portion 81 that functions as a nonflammable inner member and an outer portion 82 that functions as a nonflammable outer member, with the incense stick insertion port 80 as a boundary. The inner diameter a1 of the incense stick insertion port 80 is set to an inner diameter that allows only one incense stick 12 having a standard outer diameter (for example, 2 to 3 mm) to pass therethrough with a certain margin. In the illustrated example, the inner diameter a1 of the incense stick insertion port 80 is set to about 3.5 to 4.5 mm.

  One protrusion 81b is formed at the center of the outer peripheral surface of the inner portion 81 so as to surround it. The protrusions 81b are fitted to the recesses formed on the respective front end surfaces of the cantilever-like support members 27 and 27, and contribute to the positioning action. Inside the inner portion 81, a tunnel-shaped passage 81 a is formed from the incense stick insertion port 80 to the lower end opening 8 b (see FIG. 8) of the metal part 8. The outlet side inner diameter a2 (see FIG. 7) of the tunnel-shaped passage 81a is set to be substantially the same as or slightly smaller than the inner diameter of the incense stick insertion port 80. The length b1 (refer to FIG. 7) of the tunnel-shaped passage 81a is long enough to spontaneously extinguish the fire due to lack of oxygen in the tunnel-shaped passage 81a when the ignited incense that has been forgotten to draw out gradually spreads upward. It is determined in consideration, and is set to about 8 mm in the illustrated example.

  As shown in FIG. 7, a funnel-shaped guide surface 82 a is formed inside the outer portion 82. The inlet-side inner diameter a3 (see FIG. 7) of the funnel-shaped guide surface 82a is determined in consideration of the ease of inserting the incense stick 12 having a standard outer diameter (for example, 2 to 3 mm) into the incense stick insertion port 80. In this example, it is set to about 6 mm. Further, the depth b2 (see FIG. 7) of the funnel-shaped guide surface 82a is set to about 5 mm in this example. Therefore, even if the visual acuity is weak or the hand is inconvenient, the inner diameter a3 of the tip opening 8a of the metal part 8 is nearly two to three times the inner diameter a1 of the incense stick insertion port 80, so By making it guide to the inclination angle of the guide surface 82a, one incense stick 12 that is brittle and easy to break can be inserted into the incense stick insertion port 80 relatively easily.

  If the distance between the incense stick insertion port 80 and the support base upper surface 24d is defined as the maximum insertion depth of the incense stick in the metal part 8, in the illustrated example, the maximum insertion depth of the incense stick is 15 mm. Is set to about. Here, since the length of a standard incense stick is about 150 mm, it turns out that the maximum insertion depth of a incense stick is about 1/10 of the full length of a standard incense stick. Then, since 90% of the incense stick's full length protrudes outside from the incense stick insertion opening 80, it is understood from the weight balance that the incense stick tilts around the inner peripheral edge of the incense stick insertion opening 80 alone. It will be.

  In some cases, depending on the sect or region, the incense sticks may be ignited after being folded in two or three. Assuming such a case, the maximum insertion depth described above is 1/6 of the total length of the incense stick finished product. It is preferable that the depth is sufficiently shallower and deeper than 1/15. Depending on the region or sect, if the incense sticks are inserted into a third, the incense sticks are inserted from the incense stick opening 80 more than half of the total length. While tilting alone, even if the incense stick finished product is inserted without being folded, there is no inconvenience that the sticking portion is too long and the incense stick is easily broken during insertion.

  Next, the operation of the device of the present invention will be described. Suppose now that the tip of a standard incense stick 12 having an outer diameter of 2 mm and a total length of 150 mm is ignited. In that case, the operator tries to insert the incense stick into the upper end opening 8a located at the center of the top surface of the top plate 22 with the apparatus 1 of the present invention placed on the Buddhist altar or an appropriate table or desk around it. At this time, since the inner diameter of the upper end opening 8a is about 6 mm and is three times as large as the outer diameter 2 mm of the incense stick 12, the tip of the incense stick 12 is placed at the upper end even for an elderly person with weak visual acuity or inconvenient hand. It can be relatively easily inserted into the opening 8a.

  Then, the tip of the incense stick 12 is guided to the incense stick insertion port 80 by the guiding action of the funnel-shaped guide surface 82a. If the hand is lightly attached to the incense stick 12 in that state, the tip of the incense stick 12 is guided into the tunnel-shaped passage 81a, and then passed through the tunnel-shaped passage 81a and further guided downward. Then, the cylindrical coil-shaped electric heater 9 is received from the cylindrical end opening 9a of the cylindrical coil into the cylindrical internal cavity 9b, and the tip of the incense stick 12 abuts against the upper surface 24d of the support base 24, whereby the incense stick insertion operation is completed. To do.

  As described above, in the state where the insertion has been completed, about 90% of the entire length of the incense stick protrudes from the incense stick insertion port 80 to the outside. From the state shown by the middle phantom line to the state shown by the solid line in the figure, the tilting is performed using the inner peripheral edge of the incense stick insertion port 80 as a fulcrum in the direction shown by the arrow B. Then, the lower end part outer peripheral surface of the incense stick 12 and one or two or more of the surrounding heating wire 95 which forms the inner peripheral surface of the cylindrical coil-shaped electric heater 9, or the surrounding heating wires 94-91 located in the upper stage contact it. To do.

  At this time, the contact with the electric heater 9 is mainly the outer peripheral surface of the lower end of the incense stick, not the end face of the lower end of the incense stick. There is no problem. Moreover, even if the incense stick lower end part is bent somewhat with an irregular curvature, the circumference of the incense stick is surrounded by the surrounding heating wires 91 to 95 constituting the cylindrical coiled electric heater 9, so that the tip part Even when the incense stick 12 is bent, when the incense stick 12 is tilted, it always comes into contact with any one of the circulating heating wires 91 to 95, so that the tip of the incense stick is bent with respect to the contact with the electric heater 9. The degree of variation does not matter. Furthermore, since the cylindrical coil-shaped electric heater 9 is composed of a plurality of circulating heating wires 91 to 95 continuous in the coil axis direction, even if the insertion depth of the incense stick 12 varies, the lower end of the incense stick Since the outer peripheral surface always comes into contact with any one of the plurality of circulating heating wires 91 to 95, variation in the insertion depth of the incense stick does not become a problem with respect to the contact with the electric heater 9. As a result, according to the present invention, it is possible to improve the ignition reliability by reliably bringing the tip of any one incense stick 12 into contact with the electric heater 9.

  After that, as shown in FIG. 9, when the push button 3 is pressed with both thumbs in a state where the case 2 is supported by the right hand 13a and the left hand 13b, the switch mechanism 3a is operated, and the pressing period. As long as the electric heater 9 is energized, the surrounding heating wires 91 to 95 constituting the electric heater 9 are in a red hot state. At this time, as shown in FIG. 8, in addition to the presence of a sufficient gap between the lower end of the metal part 8 and the electric heater 9, there is sufficient air circulation, as shown in FIG. In addition, there is a sufficient gap around the electric heater 9 for air circulation. Further, fresh air is sufficiently supplied from the surrounding slit groups 5 and 6 to the electric heater 9. In the presence of sufficient oxygen, the lower end portion of the incense stick 12 receives heat from the electric heater 9 and ignites in a short time. In fact, according to the prototypes of the present inventors, it was confirmed that an arbitrary incense stick (outer diameter 2 mm, total length 150 mm) can be ignited reliably by pressing the push button 3 for about 3 to 4 seconds. It was.

  The two slits in the center of the front slit group 5 as shown in FIG. 2A, FIG. 5 and FIG. 6 until the ignition is started after the push button 3 is pressed. Since the electric heater 9 located inside the housing can be seen from 54 and 55, it is immediately confirmed that white smoke rises from the vicinity of the electric heater 9 to ignite the lower end portion of the incense stick 12, and push button 3 can be released and battery consumption due to useless long press can be avoided. In fact, according to the trial production by the present inventors, it was confirmed that the use of three AA batteries was continued for three months under normal use of the Buddhist altar.

  As a fate of the electric heater type incandescent ignition device, it is conceivable that residual ash accumulates around the electric heater 9 and hinders ignition. In this case, the front side of the housing 2 is directed to the front side. 2, the slits 51 to 58 constituting the front side slit group 5 and the slits 61 to 68 constituting the back side slit group 6 are formed as shown in FIG. Although the flat cross section of each of them is circular, the corresponding ones are aligned in a straight line in the front-rear direction. Therefore, by forming an air flow from the front side slit group 5 to the rear side slit group 6, The ash can be easily removed by blowing away, and a troublesome maintenance work such as inserting a brush through a narrow gap becomes unnecessary.

  In the electric heater type incense ignition device that ignites the incense stick 12 by operating the push button 3 while the incense stick is left unattended, after the ignition is completed, before the incense stick 12 is pulled out from the incense stick insertion port 80 For example, when a phone call suddenly leaves the place, and then forgets that the incense stick was ignited, and said that the ignition device was left with the incense stick already inserted in the incense stick insertion port 80 is assumed. This is especially true for older people who tend to lose their memory. Even in such a case, since this ignition device 1 has a heat-resistant tunnel-shaped passage 81a (see FIG. 7), even if the ignited incense stick 12 is left in the inserted state, it follows the incense stick. If the fire spread proceeds and the fire spread part extends into the tunnel-like passage 81a, the tunnel-like passage 81a has poor air permeability, so the supply of air to the fire spread part becomes poor, and an oxygen deficient state occurs. The fire of the incense stick 12 will disappear by itself. Therefore, even if such an accidental misplacement of ignited incense sticks occurs, it is possible to prevent the risk of fire.

  Next, an example of a preferred electric circuit diagram of the device of the present invention will be described in detail with reference to FIG. If the electric heater 9 is simply energized only during the period in which the push button 3 is pressed, a normally open (NO) contact built in the push button 3 is connected to the power source and the electric heater. Those skilled in the art will easily understand that it may be inserted in a closed circuit. However, in order to make the pressing operation of the push button 3 easy even with a light force in consideration of the elderly who are inconvenient, it is necessary to employ a return spring having a relatively small return force. Then, if the case falls down for some reason or is pressed against a wall or an object and the push button 3 is pressed by itself, the surrounding members are melted by energizing the electric heater 9 for a long time. In the worst case, it may cause a fire.

  Therefore, in the electrical circuit diagram shown in FIG. 10, if the push button 3 is depressed by itself, a certain time (for example, 3 to 3) required for the incandescent ignition. In addition to 5 seconds), when a predetermined margin time (for example, 3 to 6 seconds) elapses, the electric heater 9 is configured to be cut off by itself.

  That is, when the pushbutton 3 is not pressed, the built-in SPDT contact (KEY) is on the normally closed (NC) side, and the 100 μF electric field capacitor C1 is charged to the power supply voltage + 6V via the 100Ω resistor R6. Has been. In this state, when the operator presses the push button 3, the built-in SPDT contact (KEY) is switched from the normally closed (NC) side to the normally open (NO) side, and the charging voltage of the capacitor C1 is reduced by two field effects. Applied in parallel to the gates of the transistors Q1 and Q2. Then, energization of the electric heater 9 is started by turning on the transistors Q1 and Q2. Thereafter, the charging voltage of the capacitor C1 is discharged through the resistor R4 of 100 KΩ, and decreases while drawing a predetermined time constant curve. When a predetermined margin time (for example, 3 to 6 seconds) has elapsed in addition to a certain time (for example, 3 to 5 seconds) required for incense ignition after the push button 3 is pressed, the gate voltages of the transistors Q1 and Q2 Decreases to the vicinity of the threshold voltage, the transistors Q1 and Q2 are shifted from the saturated state to the active state, and the ON resistance increases (heat generation). Then, the value of the current flowing through the 1 MΩ resistor R5 increases, the base current for the bipolar transistor Q3 is supplied, and the transistor Q3 is turned on. Then, the charging voltage of the capacitor C1 is rapidly discharged through the transistor Q3, and in response to this, the transistors Q1 and Q2 are turned off at once, and the power supply to the electric heater 9 is cut off. Overheating of Q1 and Q2 is prevented. As described above, when a situation occurs in which the push button 3 is pressed by itself due to a fall, contact with another object, or the like, a predetermined time (3 to 5 seconds) required for the original incandescent ignition is added. When a surplus time (for example, 3 to 6 seconds) elapses, energization of the electric heater 9 is interrupted by itself, so that it is possible to prevent danger such as fire due to overheating of the electric heater 3.

  In the above example, a stationary structure is adopted as the housing 2 so that the incense stick 12 can be tilted by its own weight. It is also possible to construct such that some force is physically applied to the surface to positively tilt it.

  In the above example, the incense stick is inserted vertically on the premise of the stationary housing, but the insertion direction of the incense stick may be a diagonally downward direction or a horizontal direction. For example, the top plate portion may be an inclined surface, and an incense stick insertion port may be provided on the inclined surface so that the incense stick is inserted obliquely downward.

  Furthermore, in the above example, the object of ignition was specified using the word “incense stick”, but “incense stick” as used herein means a linear ignited body, and is specified by combustion. I will add it just in case that it is not limited to the so-called “incense stick” used in Buddhist affairs and aromatherapy.

According to the present invention, a push button operation for incandescent ignition can be easily performed even by a weak person such as an elderly person, while there is a situation where the push button is pressed by itself due to a fall or contact with another object. If this happens, or if the push button continues to be pressed for a long time due to a child's mischief, etc., it is possible to prevent the danger of fire due to overheating of the electric heater . Until the pressing duration time reaches a predetermined time, it is possible to provide an incandescent ignition device that can avoid wasteful consumption of the battery by making use of the instantaneous operation instantaneous return function of the momentary pushbutton switch .

DESCRIPTION OF SYMBOLS 1 Incense ignition apparatus 2 Housing | casing 2a Front side housing | casing part 2b Rear side housing | casing part 3 Push button 3a Switch mechanism 4 Dividing line 4a, 4b, 4c Screw insertion hole 5 Front side slit group 6 Back side slit group 7 Cover plate 7a Picking the lid plate 8 Metal part 8a Upper end opening of the metal part 8b Lower end opening of the metal part 9 Electric heater 9a Cylindrical end opening 10 Dry battery 11a Terminal fitting 11b Terminal fitting 12 Incense stick 13a Right hand 13b Left hand 21 Case side plate Part 22 Top plate part 23 of the casing 23 Bottom opening 24 of the casing Support bases 24a to 24c for placing the electric heater Projection 24d for positioning the electric heater Upper surface of the support base (depth limiting member)
25 Lower chamber 26 Upper chamber 27 Cantilevered support members 51-58 Front side slits 51a-58a Front side slit vertical parts 51b-58b Front side slit horizontal parts 61-68 Rear side slits 61a-68a Rear side slits Vertical part 61b-68b Horizontal part 80 of a back side slit Incense stick insertion port 81 Inner part 81a of insertion port Tunnel-shaped channel | path 81b Projection part 82a Funnel-shaped guide surface 82 Outer part 91 of insertion port The 1st step (uppermost stage) circulation Heating wire 92 Second heating wire 93 Third heating wire 94 Fourth heating wire 95 Fourth heating wire KEY Built-in SPDT contacts Q1, Q2 Field Effect Transistor Q3 Bipolar Transistor C1 Field Capacitor R3 Rapid Discharge Resistor R4 Discharge Resistor R6 Charge Resistor

Claims (3)

A casing, an incense stick insertion opening opened on an outer surface of the casing, an electric heater in the casing for igniting a tip of the incense stick inserted from the incense stick insertion opening, and the casing A momentary type pushbutton switch having a pushbutton exposed on the outer surface, an electric circuit for intermittently energizing the electric heater in conjunction with an on / off operation of the pushbutton, and a battery as a power source , and The electric circuit continues to energize the electric heater only while the push button is pressed until the push button press duration exceeds a predetermined time, while the push button press duration time is the predetermined time. to when it exceeds the power is forcibly circuit operation to block incorporates a to the electric heater, further,
The incense ignition device , wherein the return spring strength of the push button is set so weak that it can be easily pushed by a weak person such as an elderly person . The incense ignition device according to claim 1 , wherein a tip of the push button protrudes from an outer surface of the housing. The incense ignition device according to claim 1 or 2 , wherein the casing is an upright stationary type, and the push button is attached at any position on a peripheral side surface thereof.

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