JP2014175100A - Grip part of penlight and penlight with grip part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grip part of penlight capable of radiating heat around a light-emitter and provide a penlight using the same.SOLUTION: This invention relates to a grip part 1 of penlight and a penlight using the same that comprises a main body 2, a light-emitting body 3 arranged at the main body and a heat sink 4 mounted in the main body while being adjacent to the light-emitting body, a location near the heat sink of the main body is provided with an aeration holes 7c facing one another through the heat sink, the heat sink is provided with an air passage crossing the heat sink and the air flows in two directions so as to cause the air to flow between the facing aeration holes through the air passage.

Description

  The present invention refers to light-emitting instruments (hereinafter simply referred to as “penlight”) such as penlights and sticklights mainly used by spectators and participants in concerts and various events (hereinafter collectively referred to as “concerts”). “Penlight” in the present invention refers to all such light emitting devices).

  The penlight is held by a spectator, for example, at a venue such as a concert, and is emitted, lit, and shaken for use.

  Conventionally, penlights have been used by spectators to appeal to themselves, and for many spectators to use a penlight to form a sense of unity in concerts and the like. Originally it emitted light in a single color, but in recent times it is not only a simple color light emission but also a multicolor penlight or a penlight that flashes like neon, etc. Planning, purpose etc. of each concert etc. There is a demand for new penlights that meet the needs, and the audience's needs for penlights are diversifying.

  As such a new type of penlight, it is expected that demand and needs for a high-power and high-intensity penlight capable of dramatically improving brightness will increase in the future. This is because a conventional penlight uses, for example, a so-called button battery as a power source, a current is about 20 milliamperes (mA) (brightness is about 0.023 W), and almost no heat is generated when an LED is used as a light emitter ( The area around the illuminant was hardly heated), while the amount of current and brightness were greatly increased. In many cases, for example, four AAA batteries were used as the power source, and the current was 600 mA. It is also conceivable to use an LED corresponding to high output and high brightness as the light emitter at a level (brightness of about 3 W).

  Such a high-power / high-brightness penlight can significantly improve the luminance (brightness) or light quantity as described above.

  However, unlike conventional penlights, depending on the current setting, the temperature of the illuminant increases even when light is emitted for a short period of time. Also generate heat at very high temperatures. For example, in the case of the LED in the above-described high-power / high-intensity penlight, the LED itself may rise to about 150 degrees Celsius depending on conditions. As a result, the periphery of the light emitter becomes considerably hot and reaches the outside of the penlight body. In this case, the penlight itself may be damaged. Not only that, but penlights are usually used by hand, and are also shaken near the face. Injury such as thermal burns (human skin becomes burned at a temperature of 45 degrees or higher, and it is said that tissue destruction starts in about 1 hour at 45 degrees and about 1 second at 70 degrees) Unless this can be achieved, it is difficult to meet the needs of consumers for high-power and high-intensity penlights.

  In addition, recently, batteries that can be charged and used repeatedly have become widespread, and it is demanded that they can also be used in penlights. When using such rechargeable batteries, they are more than ordinary batteries due to their properties. It is desirable to avoid high temperatures. For this reason, in a high-power / high-brightness penlight compatible with a rechargeable battery, the temperature rise around the light emitter and the countermeasures become even more important problems.

  For the penlight, for example, an invention for changing the emission color and luminance (Patent Document 1), an invention for improving the convenience of switch operation of the light emitter (Patent Document 2), and the like have been proposed. No one has been proposed to deal with the problem.

JP 2009-176697 A JP 2009-004224 A

  An object of the present invention is to solve the above problems. More specifically, an object of the present invention is to provide a penlight gripping part capable of dissipating heat around the light emitter and a penlight using the same.

  In order to solve the above problems, as a first aspect of the present invention, the present invention includes a main body, a light emitter provided in the main body, and a heat sink installed in the main body in the vicinity of the light emitter. A ventilation hole facing the heat sink is provided near the heat sink of the main body, and the heat sink includes an air flow path through which the air traverses the heat sink, and the air passes through the air flow path. Then, a penlight gripping portion is provided in which the heat sink is disposed so as to flow in both directions between the opposed vent holes.

  As a second aspect of the present invention, according to the present invention, an outer cover is provided on the outer periphery of the location where the heat sink of the main body is installed, and the outer cover is passed through a position corresponding to a vent hole provided in the main body. Provided is a penlight grip portion provided with pores.

  As a third aspect of the present invention, the present invention provides the grip portion of any one of the penlights, wherein a plurality of grooves are provided on the surface of the main body and / or the surface of the outer cover.

  As a fourth aspect of the present invention, the present invention provides the grip portion of any one of the penlights, wherein a convex boundary is formed around the vent hole of the main body and / or the vent hole of the outer cover. .

  As a fifth aspect of the present invention, the present invention provides the penlight gripping part according to any one of the above, which has an auxiliary member adjacent to the heatsink and disposed between the heatsink and a separately provided electronic circuit board. I will provide a.

  As a sixth aspect of the present invention, the present invention provides the penlight gripping portion in which the auxiliary member has an air flow path.

  As a seventh aspect of the present invention, according to any one of the above aspects, the present invention includes a lid for closing the battery housing portion on the side surface of the main body, and a holding portion for holding a part of the lid together with the main body. Provide a penlight grip.

  As an eighth aspect of the present invention, the present invention provides a penlight using any one of the penlight grips described above.

  ADVANTAGE OF THE INVENTION According to this invention, the effect that the heat | fever around a light-emitting body can be dissipated by the flow of the air generate | occur | produced at the time of penlight use can be acquired.

It is a figure which shows one Example of the holding part of the penlight which concerns on this invention. It is a figure which shows the holding part of the penlight shown in FIG. 1 from the opposite direction. It is a figure which shows the flow of the air which may arise when using the holding part of the penlight which concerns on this invention. It is a figure which shows an example of the heat sink used for this invention. It is a figure which shows another example of the heat sink used for this invention. It is a figure which shows an example of the outer side cover of this invention. It is a figure which shows an example of the holding part of the penlight of this invention which attached the outer side cover shown in FIG. 6 to the main body. It is a figure which shows an example of the auxiliary member of this invention. It is a figure which shows an example in the case of attaching the auxiliary member shown in FIG. It is a figure explaining an example of the holding part of this invention using a holding | maintenance part. (A) shows a state in which the lid 23 of the battery storage unit 19 is removed, (b) shows a state before the lid 23 is closed and the holding unit 25 is attached to the main body 22, and (c) shows the holding unit 25 in the main body 22. The attached state is shown. It is a figure which shows an example of the penlight using the holding part of the penlight of this invention. It is a figure which shows arrangement | positioning of a light-emitting body and a heat sink. In the example shown in this figure, a flat plate 28 is provided between the LED 3 and the heat sink 4. It is a figure for demonstrating this space by an example which comprised the outer cover so that a space might be provided between a main body in the inner side of an outer cover, when an outer cover was attached to the holding | maintenance part main body. It is a figure which shows the penlight holding | grip part of FIG. 7 from the direction different from FIG. 7 (direction shifted 90 degree | times). It is a figure which shows another example of the auxiliary member of this invention. It is a figure which shows an example of arrangement | positioning at the time of attaching the auxiliary member shown in FIG. 15 inside a main body from the front side.

  Hereinafter, embodiments of a penlight gripping portion and a penlight using the same according to the present invention will be described in detail with reference to the drawings.

Example 1
FIG. 1 shows an embodiment of a penlight gripping portion of the present invention. The penlight grip 1 of the present invention includes a main body 2, a light emitter 3 provided in the main body, and a heat sink 4 provided in the main body. The main body may be made of a material such as plastic as long as it normally requires the required strength. The main body can be separately provided with an electronic circuit board for processing the light emitting function of the light emitter, a battery storage section for storing a battery, and the like.

  In this embodiment, an LED that can respond to high output and high brightness (hereinafter simply referred to as “LED 3” in this embodiment) is used as the light emitter 3. However, the light-emitting body in the present invention is not necessarily limited to this, and includes a light-emitting body that becomes so hot that a heat dissipating means is required for use of the penlight. In this embodiment, the LED 3 is provided on the upper part of the main body 2. The LED 3 may be located inside the main body 2 or may be provided outside the upper portion of the main body 2 as shown in FIG. As is obvious to those skilled in the art, a lens or the like is provided around the LED.

  When the penlight is used, as shown in FIG. 11 as an example, the cover 26 having a bar shape or the like is usually attached to the upper portion of the grip portion so as to cover the LED, and used as a light emitting portion. That is, the penlight is composed of a grip portion and a light emitting portion. In FIG. 11, the penlight 27 includes the grip portion 11 and the light emitting portion 26 of FIG. 7. In general, the cover can be replaced if it is the same standard.

  In the present invention, a means for promoting heat dissipation is further provided inside the main body 2 of the grip portion 1.

  As described above, in the conventional penlight, the light emitter hardly generates heat from the relationship between the luminance and the light quantity. For example, about 4 button batteries (LR44 type) are used as the power source, and the current is about 20 milliamperes (mA) (brightness is about 0.023 W), the light emitter (LED) even if the light is emitted for about 20 minutes. Almost no heat is generated. For this reason, the problem that the penlight itself is damaged by heat does not occur, and no special measures are taken for heat dissipation in the conventional penlight.

  In the present invention, a heat sink 4 (a heat radiator, a heat radiating plate) is installed inside the main body 2 of the grip portion 1 in order to promote the heat radiation of the penlight in which the amount of heat of the light emitter is remarkably increased.

  Here, the heat sink itself has a heat dissipation function. However, in the case of a high-power penlight or the like, the temperature of the light emitter may rise to about 150 degrees Celsius depending on conditions. Therefore, it is not always possible to obtain a sufficient heat dissipation effect simply by using a heat sink.

  Therefore, in the present invention, first, the heat sink is configured so as to ensure a certain surface area in order to further promote heat dissipation.

  Next, a heat sink is provided close to the LED. Here, the proximity includes not only the case where the heat sink and the LED are provided in direct contact but also the case where a flat plate or a sheet is provided between the heat sink and the LED. In this case, if the flat plate or sheet is made of aluminum, it is preferable in terms of promoting heat dissipation. FIG. 12 shows an example in which an aluminum flat plate 28 is provided between the LED 3 and the heat sink 4.

  Further, in the present invention, a ventilation hole is provided in the main body. However, even if a ventilation hole is provided in the main body, a sufficient heat dissipation effect is not always obtained. Depending on the size and position of the holes, there may be little effect on heat dissipation. On the other hand, to provide a vent hole in the penlight, for example, if the area occupied by the vent hole in the surface area of the main body is too large, the strength of the main body cannot be maintained, and the risk of damage when using the penlight or dropping is increased. There is a danger of.

  Here, in the present invention, the air flow generated when the penlight is used is utilized, thereby exerting the function of the heat sink to a great extent and efficiently dissipating heat. The heat sink is also suitable for this. And a vent hole is provided in a main body from the said viewpoint.

  That is, from the viewpoint of allowing air to efficiently flow in both directions between vent holes (described later) provided in the main body of the gripping portion and allowing air to flow on more surfaces of the heat sink. The heat sink is configured to include a passage (air channel) through which air can flow across the heat sink. The transverse direction here refers to the direction from the air vent to the air vent when the heat sink is installed in the main body so as to be located between the air vents facing each other provided in the main body (crossing the penlight longitudinal direction). Direction). For example, in a heat sink having a flat plate as a substrate (having projections formed on the flat plate), this is usually the direction along the plane of the flat plate, and in FIG. 4, the vertical direction in the figure shown. Rather, it refers to the direction from the near side to the opposite side. Also in FIG. 5, it refers to the direction along the plane of the flat plate, not the vertical direction.

  From the above viewpoint, the heat sink 4 of the present embodiment is configured such that a plurality of fins 5 are provided in parallel on a flat plate as shown in FIG. According to this, the air flow path 6 is provided between the fin 5 and the other fin 5. A method of arranging the heat sink will be described later.

  From the above viewpoint, the heat sink may be configured in a sword mountain shape as shown in FIG. 5, for example, and the air flow path 60 may be provided between the protrusions 50.

The size of the heat sink, the height of the fins and protrusions, and the like can be selected as appropriate.

  In addition, the heat sink of the shape which prevents the bidirectional | two-way air flow between the opposing ventilation holes provided in the main body (for example, the one that prevents the air flow by having a thick core in the center) is the heat sink of the present invention. Will not be suitable.

  In the present embodiment, the heat sink 4 is made of aluminum because of its high heat dissipation function and light weight, but the material of the heat sink is not necessarily limited to this, and other desired materials such as resin can be selected.

  Further, in the present invention, a vent hole 7 is provided in the vicinity of the heat sink 4 of the main body 2 so as to face each other through the heat sink 4 (see 7a in FIG. 1 and 7b in FIG. 2). 2 shows the grip 1 of FIG. 1 from the back side). That is, the main body 2 is provided with at least two air holes facing each other, and the heat sink 4 is installed between them.

  The penlight is usually used while being held by hand and swinging up and down, back and forth, and from side to side. At this time, an air flow naturally occurs in the direction of shaking the penlight (or the penlight gripping portion). The present invention utilizes such air flow. That is, according to the present invention, when the penlight is shaken in one direction, air enters mainly from one of the opposed vent holes and passes through the heat sink to the other vent hole on the opposite side. When the penlight is shaken in the opposite direction, air mainly enters from the other vent hole, and this is repeated each time the penlight is shaken. FIG. 3 shows these air flows. Thereby, for example, the heat dissipation function of the heat sink can be dramatically improved without providing a fan or the like for creating a separate air flow. That is, even if the penlight is turned on at a high output for a certain period of time, it is possible to prevent the light emitter and its surroundings from becoming hot without requiring additional parts such as a fan.

  In view of the above, the heat sink is arranged so that air flows in both directions between the air holes facing each other through the air flow path, and air can flow on more surfaces of the heat sink. For example, in the case of the heat sink 4 (FIG. 4) of the present embodiment, vent holes 7a and 7b are provided on both sides in the longitudinal direction of the plurality of fins 5 provided in parallel (the front side and the other side in the drawing shown in FIG. 4), respectively. Place so that is located. As a result, air passes through the air flow path formed by the fins 5 and the heat dissipation function of the heat sink 4 is enhanced. In other words, it is not arranged so as to prevent air from entering from the vent holes, or arranged so that air cannot sufficiently pass through the surface of the heat sink 4.

  As long as the above-described air flow can be achieved, the vent hole 7a and the vent hole 7b do not necessarily have a strictly symmetrical positional relationship, and do not necessarily have the same shape.

  Further, the number of the vent holes on one side and / or the other side is not limited to one, and in addition to the vent holes 7a and 7b, as shown in 7c in FIG. 1 and 7d in FIG. These may be provided, or a plurality of these may be provided. When providing a plurality of vent holes, the number of vent holes on one side and the other side need not be the same. However, regardless of the number of ventilation holes, if the area occupied by the ventilation holes in the surface area of the main body is too large, the strength of the main body cannot be maintained, and the risk of breakage when using a penlight or dropping increases. In addition, when the vent hole is enlarged, there is a high risk that a hand touches a high-temperature heat sink or the like to cause burns. Therefore, when the vent holes 7a and 7b are made relatively large, for example, a lattice-like member may be provided in the vent holes 7a and 7b in the same manner as illustrated for the outer cover described later.

  When the penlight of the present invention is used (vibrated) so that the vent hole faces in the direction in which the penlight is shaken, air can be taken in around the heat sink in the main body, and a heat dissipation effect is obtained, which is preferable. In general, the grip portion of the penlight is cylindrical, but in the present invention, it is preferable to change the shape of the portion to be gripped mainly, for example, the main body of the grip portion is gently depressed. In this case, it is more preferable to provide gentle depressions having a specific shape on one or several places on the outer side of the main body. In the present embodiment, as shown in the figure, the main body is provided with four vertically long oval portions 8 as shown in FIG. In addition, this vertically long ellipse can be appropriately selected such as a shape closer to a rectangle. According to this depression, the user can easily check the position (orientation) of the vent hole 7. In addition, this makes it easier for the gripping part 1 to fit in the hand, so that the position (orientation) of the vent hole once determined is easily maintained. Furthermore, it is advantageous not only to have a cylindrical shape but also to change the shape of the gripping portion in this way in terms of ease of gripping and difficulty in sliding. Since penlights are often used for a long time, if the grip part is thick to some extent, it is easy to get tired if you hold a simple cylindrical object for a long time. Even more advantageous.

(Example 2)
According to the first embodiment, a heat dissipation effect can be obtained. However, if the light emission is continued at a high output, the penlight gripping portion 1, particularly the periphery of the vent hole 7 outside the main body 2, has a certain amount of heat. I don't get it. Therefore, it is preferable that the penlight of the present invention is provided with an outer cover on the outer periphery of the main body where the heat sink is installed, and the outer cover is also provided with a vent hole. The vent hole of the outer cover is provided at a position corresponding to the vent hole provided in the main body facing the heat sink (for example, 7a and 7b in the example shown in FIGS. 1 and 2). The air flow in the vent hole is configured not to be obstructed. However, the shape and size may not be the same.

  Further, the outer cover may be provided with other vent holes in addition to the vent holes. In this case, for example, when a vent hole such as 7c (FIG. 1) or 7d (FIG. 2) is provided in the main body, it is preferable to provide a vent hole in the outer cover so as to correspond to these. However, the shape and size may not be the same. An example of this outer cover is shown in FIG. In this figure, a vent hole corresponding to the vent hole 7a in FIG. 1 is provided in the outer cover 9 as a vent hole 10a. Similarly, a vent hole corresponding to the vent hole 7b in FIG. 2 is provided in the outer cover 9 (see the back side, 10b in FIG. 10A). A vent hole corresponding to the vent hole 7c in FIG. 1 is provided as the vent hole 10c. Similarly, a vent hole corresponding to the vent hole 7d in FIG. 2 is provided in the outer cover 9 (see the back side, 10d in FIG. 10A).

  In FIG. 6, the outer cover 9 is divided into an upper part (side on which the vent hole 10a is located) and a lower part (side on which the vent hole 10c is located). It is not necessary to divide into the parts.

  An example of the penlight gripping portion 11 with the outer cover 9 attached to the main body 2 is shown in FIG.

  Since the outer cover 9 is provided, the temperature of the portion that may be touched by the hand can be further lowered, so that the risk of thermal burns can be reduced. In particular, even if an LED or a heat sink generates heat to an extremely high temperature due to a short circuit or the like, a burn or the like can be avoided. Even when the penlight is dropped and the parts are damaged, the provision of the outer cover 9 can prevent high-temperature LEDs and heat sinks from being scattered around.

  When the outer cover is attached to the main body, the outer cover is preferably configured so as to provide a space in which air flows between the inner side of the outer cover and the main body. FIG. 13 shows an example (inside view of the outer cover) configured such that a space (space 12) is provided between the outer cover 9 and the main body 2. According to this, since air can distribute | circulate also through this space, the heat dissipation effect is further acquired.

  The outer cover and the main body can be made removable, for example, as a screw-in type.

  Providing a plurality of grooves on the surface of the main body or the surface of the outer cover is more preferable because it reduces the area touched by the hand, but increases the surface area touched by air, so that a further heat radiation effect can be obtained. Moreover, since the temperature of the part which touches a hand can be lowered | hung, the possibility of a burn can be reduced further. In FIG. 7, a groove 13 is illustrated as an example of the groove of the outer cover 9. Similarly, in the main body 2, for example, a groove may be provided on the side of the vent holes 7c and 7d in FIG.

  The ventilation holes of the main body and the ventilation holes of the outer cover are more dangerous when touched. Therefore, in order to urge the user not to touch this portion, the periphery of the vent hole of the main body or the vent hole of the outer cover may be raised one step to form a convex boundary, which may be a mark for informing the presence of the vent hole. . FIG. 14 illustrates the penlight gripping part 11 from a direction different from that in FIG. 7 (direction shifted by 90 degrees), and shows an example of the convex boundary (convex boundary 14).

In either case, the following penlight gripping part having an electric current of about 600 mA (brightness of about 3 W) was left to emit light for about 20 minutes in a windless environment at 19.5 degrees Celsius.
1. A penlight gripping part using a main body having a light emitting body 3, an aluminum flat plate 28, vent holes 7a, 7b, 7c and 7d, and a vertically long oval part 8 and having no heat sink (the penlight gripping part shown in FIG. 1) In this example, the heat sink 4 is not provided.
2. A main body having a light emitting body 3, an aluminum flat plate 28, vent holes 7a, 7b, 7c and 7d, a vertically long oval portion 8, a heat sink 4 (shown in FIG. 4), and an outer cover 9 shown in FIG. FIG. 13 shows a penlight grip provided with a space 12 shown in FIG. 13 (according to the present invention).

Then, when the temperature of the aluminum flat plate 28 was measured as the periphery of the light emitter, the following results were obtained.
Above 1: 115.3 degrees Celsius Above 2: 70.3 degrees Celsius

Further, when the temperature in the vicinity of the vent hole 7a was measured, the following results were obtained.
Above 1: 88.2 degrees Celsius Above 2: 58.6 degrees Celsius

  Regarding the grip part of the penlight of 2 above, when the temperature near the vent hole 10a of the outer cover was measured, it was 39.1 degrees Celsius.

Next, after holding each gripping part in the hand and shaking it left and right for about 30 seconds, the temperature in the vicinity of the vent 7a was measured, and the following results were obtained.
Above 1: Celsius 62.8 degrees Above 2: Celsius 37.3 degrees

  Regarding the grip part of the penlight of 2 above, when the temperature near the vent hole 10a of the outer cover was measured, it was 28.7 degrees Celsius.

  In addition, the gripping part 1 above that does not have the vents 7a, 7b, 7c, and 7d was also prepared, but the measurement was stopped due to the difficulty of measurement when the luminous body was too hot and reached 126.8 degrees. did.

  As is clear from the above, according to the present invention, it was recognized that a certain amount of heat dissipation effect was obtained before the gripping portion was shaken, and a remarkable heat dissipation effect was recognized after the shake.

(Example 3)
An electronic circuit board (computer board) for controlling the light emission of the light emitter is often provided separately inside the main body. Since this substrate is vulnerable to heat, for example, even if a slight distance (space) is provided between the substrate and the heat sink, the substrate may be damaged by heat.

  Therefore, it is preferable to arrange an auxiliary member adjacent to the heat sink and between the heat sink and the substrate.

  FIG. 8 shows an example of such an auxiliary member. It is more preferable that the auxiliary member 15 has the air flow path 16 because a heat dissipation effect can be obtained also here. In the present embodiment, the base portion of the auxiliary member is a flat plate, and holes 17 are formed through several portions of the flat plate so as to penetrate vertically, and a plurality of holes are formed on the base portion (lower side of the base portion in the drawing) as in the heat sink of the first embodiment. The fins 18 are provided in parallel.

  FIG. 15 shows an example of an auxiliary member having a shape different from that in FIG. In this example, a column 33 is provided on the upper part of the auxiliary member 29 (on the side opposite to where the fins 32 are provided). It is assumed that two of the pillars 33 are a pair, and the pair of pillars sandwich one of the fins of the heat sink. At this time, it is more preferable that the distance between the pair of pillars is slightly narrower than the width of one fin so that the coupled state between the pillars and the fins can be easily maintained. Note that the pillars 33 do not necessarily have to have a structure in which two or a pair of fins are sandwiched. For example, a single pillar is used, and a cut is made in the center in the vertical direction (vertical direction). Various configurations are conceivable, such as inserting a fin at a portion).

  FIG. 16 shows a state where the auxiliary member 29 shown in FIG. 15 is attached to the heat sink. As shown in the figure, when the auxiliary member 29 is attached to the heat sink 34 so that the pair of pillars 33 sandwich one of the fins 32 of the heat sink 34, the auxiliary member 29 stably supports the heat sink 34.

  Here, a protruding portion (protruding portion 35) is provided at a part of the base portion of the auxiliary member 29, and a support portion 36 for receiving the protruding portion 35 is provided inside the main body (not shown in FIG. 16). The base portion) is supported by the support portion 36. Then, since the heat sink 34 is supported by the auxiliary member 29, the heat sink 34 itself does not need to be supported by the main body (inside). Therefore, the size of the heat sink 34 can be set so as not to contact the inside of the main body.

  According to this, since it is possible to create a space through which air can flow between the periphery of the heat sink 34 and the inside of the main body, heat radiation can be expected from the side of the heat sink. Moreover, since air also flows from the holes 31 of the auxiliary member 29 and the fins 32 are provided to obtain a heat radiation effect, heat radiation from the lower side of the heat sink can be expected. If vent holes 7c and 7d are provided in the main body or vent holes 10c and 10d are provided in the outer cover, air (outside air) can be circulated through these vent holes.

  Instead of the fins 18, a plurality of protrusions as shown in FIG. Further, the position where the protruding portion 35 is provided is not limited to the illustrated one (in FIGS. 15 and 16, the left and right sides of the auxiliary member 29), and may be provided before and after the auxiliary member, for example. The size of the auxiliary member, the height of the fins and protrusions, and the like can be selected as appropriate.

  The auxiliary member can be made of, for example, resin (a heat dissipation effect due to heat conduction can be expected), but is not limited thereto, and a desired member can be selected.

  In the present embodiment, as shown in FIG. 9, the auxiliary member 15 is positioned directly below the heat sink 4 so that the electronic circuit board 20 is positioned therebelow. The auxiliary member may not be in contact with the electronic circuit board.

Example 4
For example, if the penlight is accidentally dropped, it is possible to prevent the heat sink and the like provided inside from scattering by the outer cover as described above, but further, the battery stored inside the main body is scattered outside. There is also a need to prevent this. In particular, in the case of a high-power and high-intensity penlight, a button battery, for example, a heavier AAA battery is used, which is dangerous if it is scattered.

  In order to solve this problem, in this embodiment, as shown in steps (a), (b), and (c) in FIG. 10, a lid 23 for closing the battery storage unit 19 on the side surface of the main body of the gripping unit 21. And a holding portion 25 for holding a part 24 of the lid together with the main body 22 is provided.

  As shown in FIGS. 10A and 10B, the holding portion 25 can be a screw-in type in which a part 24 of the lid and the main body 22 are screwed and connected from below the main body, for example.

  According to this, it is possible to prevent the lid for closing the battery housing portion provided on the side surface from being removed even when it is dropped.

  In addition, as for the invention disclosed by this specification, the whole shape including a light emission part is not restricted to a pen shape or a stick shape (bar shape). That is, in any of the above-described inventions, various shapes such as decoration can be provided and the light-emitting portion can be formed into a heart shape or a star shape. included.

  In this specification, an example of a high-power / high-intensity penlight is one that has a current of about 600 mA, and it has been shown that a penlight that obtains high brightness with this amount of current can be put into practical use. It is obvious that the present invention can be applied without being limited to a penlight having a specific amount of current.

  According to the present invention, the heat around the light emitter can be efficiently dissipated by the flow of air generated when the penlight is used without attaching a separate fan or the like. Therefore, even in a penlight that requires heat dissipation, heat dissipation can be realized without complicating the structure and suppressing cost. In particular, in the case of a high-power and high-brightness penlight whose brightness is expected to increase in the future, in order to meet the needs, it is essential to ensure the safety of the user by heat dissipation. However, the structure for this is expected to be complicated and costly, and as a result, safety cannot be ensured, and there is a possibility that the need for a high-power, high-brightness penlight may not be met. It can be dealt with. As described above, the present invention can improve the safety of a person who uses a penlight that needs to be dissipated. Therefore, the supply can be promoted, and as a result, the demand can be met. Therefore, the industrial applicability of the present invention is extremely high.

1, 11, 21 Penlight grips 2, 22 Body 3 Light emitter, LED
4 Heat sink 5 Fin 50 Protrusion 6, 60 Air flow path 7, 7 a, 7 b, 7 c, 7 d Vent hole 8 Depression, vertically long oval part 9 Outer cover 10, 10 a, 10 b, 10 c, 10 d Vent hole 12 Space 13 Groove 14 Convex Boundary 15 Auxiliary member 16 Air channel 17 Hole 18 Fin 19 Battery compartment 20 Electronic circuit board (computer circuit board)
23 Lid 24 Part of Lid 25 Holding part 26 Light emitting part, Cover 27 Penlight 28 Flat plate 29 Auxiliary member 30 Air flow path 31 Hole 32 Fin 33 Pillar 34 Heat sink 35 Base bulge part 36 Support part

Claims (8)

The body,
A light emitter provided in the main body;
It consists of a heat sink installed close to the light emitter inside the main body,
In the vicinity of the main body where the heat sink is installed, a vent hole facing the heat sink is provided,
The heat sink comprises an air flow path through which air traverses the heat sink;
A penlight grip portion in which the heat sink is arranged so that air flows in both directions between the opposed air holes through the air flow path.
2. The penlight according to claim 1, wherein an outer cover is provided on the outer periphery of the main body where the heat sink is installed, and a vent hole is provided in the outer cover at a position corresponding to the vent hole provided in the main body. Gripping part.
The grip part of the penlight of Claim 1 or 2 with which the some groove | channel was provided in the surface of the said main body, and / or the surface of the said outer side cover.
The penlight gripping portion according to any one of claims 1 to 3, wherein a convex boundary is formed around the vent hole of the main body and / or the vent hole of the outer cover.
The penlight gripping unit according to any one of claims 1 to 4, further comprising an auxiliary member adjacent to the heat sink and disposed between the heat sink and a separately provided electronic circuit board.
The penlight gripping portion according to claim 5, wherein the auxiliary member has an air flow path.
The penlight grip according to any one of claims 1 to 6, wherein a lid for closing the battery storage unit is provided on a side surface of the main body, and a holding unit for holding a part of the lid together with the main body is provided. Department.
  The penlight using the holding part of the penlight as described in any one of the said Claims 1-7.