KR20090001806U - A hand held lighting device - Google Patents

Abstract

The present invention relates to a flashlight device, having at least one light emitting module including at least one light emitting diode (LED) encapsulated in a base, the base having a first lens and a second lens correspondingly positioned on top of the first lens. The second optical lens structure increases the irradiation density, the light is emitted in a single direction as a flat light emitting surface source, and when a plurality of light emitting modules are irradiated to the object, there is no plurality of shadows or flashes, and the light brightness is a distance It will not fade out as you increase it.

Flashlight, Light Emitting Diode, Light Emitting Module

Description

 Flashlight Device {A HAND HELD LIGHTING DEVICE}

The present invention relates to a flashlight device, and more particularly, a flashlight having a second light lens structure equivalent to a heat dissipation means for forming single and flat light emitting surface sources and transferring heat generated from the flashlight device and a power source to the external atmosphere. Relates to a device.

There are several types of light emitting methods in lighting devices. Light emitting diodes (LEDs) are one type with high light conversion efficiency and have good features including small size, long durability life, fixed wavelength, adjustable light density and light quantity, and low heat generation. LEDs are suitably applied in various fixed lights, headlights, table lamps, and the like. In particular, when the entire global market is concerned about the lack of energy resources, LEDs are focusing on their benefits. Recent technologies increase the brightness of LEDs with additional value, and currently commercially available LED products are designed to be modular in order to provide convenience as a replacement part for the user. LED chips are designed to meet light, thin, short and small recent trends. Therefore, it is inevitable that LED is the most important optical device.

However, the endurance life and reliability of conventional LEDs are substantially affected by temperature. Taking a GaN light emitting diode as a sample, when the LED is charged with power, 20% to 30% of the energy is converted to light energy to emit light, and 70% to 80% of the energy is converted to heat dissipated. Without heat dissipation means to dissipate heat from the encapsulated LED, heat accumulates, the temperature rapidly increases to adversely affect the endurance life of the LED, and overheating damages the chip. Thus, output is significantly halved in economic profits.

Moreover, the conventional LED flashlight device used for the work light uses a plurality of LEDs for better illumination. Since the illumination of a plurality of LED arrays is composed of a multifocal source, when a multifocal source is projected onto an object, a plurality of shadows are generated, causing surface reflections, and the user's object recognition is blurred. In addition, high density LED arrays require high material costs. Therefore, how to solve the above problems of the prior art, to simplify the structure and the optical device having a flat light emitting surface source, and to increase the heat dissipation effect is the goal of manufacturing in this field.

The present invention is to overcome the above-mentioned problems, the object of the present invention is that the second optical lens structure can significantly increase the illuminance density of the LED chip, and can irradiate light in a single direction as a flat surface light source. Further, when a plurality of light emitting modules irradiate light onto an object, a plurality of shadows or flashes are not generated, and the light brightness does not fade out with increasing distance, and heat generated from the light emitting device and the power supply unit It is to provide a flashlight device that can be delivered to the outside, can be exchanged with the external cooling air, the user can avoid holding the flashlight device for a long time during work.

As an example of a flashlight device according to the present invention, it has one or more light emitting modules including one or more light emitting diodes (LEDs) encapsulated in a base, and the base includes a first lens and a second lens correspondingly positioned on top of the first lens. The second optical lens structure increases the irradiation density, the light is emitted in a single direction as a flat light emitting surface source, and when a plurality of light emitting modules are irradiated to the object, there is no plurality of shadows or flashes, and the light brightness is It will not fade out as distance increases.

As another example of the present invention, the heat dissipation module is located in parallel in the housing, separating the light emitting device and the power supply, the circuit board of the light emitting device is attached to the upper surface of the heat dissipation module, the storage battery of the power supply Located in the isolation space of the dissipation module, the circuit board of the power supply unit is attached to the bottom surface of the heat dissipation module, and heat generated from the light emitting device and the power supply unit is transferred to the external cooling surface for dissipation and is distributed to the external cooling air. It prevents overheating of the light emitting device and power supply unit located in the enclosed space and reduces the possibility of damage due to overheating.

As another example of the present invention, a flashlight device includes a rack for receiving a handle of a housing in an accommodation space, wherein the rack is located on a surface far from the positioning hole and a positioning hole formed on a surface connected with the accommodation space. It consists of a hook, whereby the housing can be fastened to the user by the hook at the request of the user at the time of operation, and the flashlight device can be used for various purposes.

The flashlight device of the present invention has the following advantages.

1. The light emitting module 22 is correspondingly positioned on at least one LED chip 222 encapsulated in the base 221, a first lens 223 encapsulated in the base 221, and an upper portion of the first lens 221. And a second lens 224. The second optical lens structure can significantly increase the illuminance density of the LED chip 222 and can irradiate light in a single direction as a flat surface light source. Furthermore, when the plurality of light emitting modules 22 irradiates light on the object, a plurality of shadows or flashes are not generated, and the light brightness does not fade out with increasing distance.

2. The heat dissipation module 3 located in parallel in the empty space part 10 of the housing 1 can separate the light emitting device 2 and the power supply unit 4, ie, the circuit board of the light emitting device 2. 21 is attached to the upper surface of the heat dissipation module 3, the storage battery 44 of the power dissipation module 3 is located in the isolation space 30 of the heat dissipation module 3, the circuit of the power dissipation module 4 Board 41 is attached to the bottom surface of the heat dissipation module (3). Therefore, heat generated from the light emitting device 2 and the power supply unit 4 can be transferred to the outside, and can be exchanged with external cooling air. Therefore, heat accumulation can be prevented in the closed void portion 10, and damage due to overheating of the light emitting device 2 and the power supply unit 4 can be prevented.

3. A positioning hole 52 formed on a surface connected with the receiving space 51 to accommodate the handle 11 of the housing 1 and the light emitting device 2 to position the light emitting device 2. And a rack (5) consisting of hooks (53) located on the other side of the surface away from the positioning holes (52) to hold the housing (1) as required by the user. Thus, the user can avoid holding the flashlight device for a long time during the work.

What has been described above is just one embodiment for implementing the flashlight device according to the present invention, the present invention is not limited to this embodiment, the subject matter of the present invention as claimed in the following utility model registration claims Without departing from the technical spirit of the present invention to the extent that any person of ordinary skill in the art to which the invention belongs can be variously modified.

1 to 6, the flashlight device according to the present invention includes a housing 1, a light emitting device 2, a heat dissipation module 3, and a power supply unit 4.

The housing 1 has an empty space 10 for accommodating the light emitting device 2, the heat dissipation module 3, and the power supply unit 4. The housing 1 is connected to the handle 11 at one end, the bottom lid 12 coverd on the handle 11, the upper opening 13 at the other end spaced from the handle 11, and the upper opening 13. It consists of an upper lid 14 and a through hole 15 formed between the handle 11 and the upper opening 13. In addition, two sliding tracks 16 are located on the two inner side walls of the housing 1. Moreover, the waterproof pad 17 is firmly located between the end of the handle 11 and the bottom lid 12, as well as between the top opening 13 and the top lid 14.

The light emitting device 2 is composed of a circuit board 21 and one or more light emitting modules 22. The light emitting module 22 is composed of a base 221 and one or more LED (light emitting diode) chips 222 in the base 221. The base 221 is composed of a first lens 223 and a second lens 224 positioned correspondingly on the first lens 223. Therefore, the light emitting module 22 may be fixed to the through hole 15 of the housing 1.

The heat dissipation module 3 may be connected to the upper lead 14 or the heat dissipation module 3 may be integrally formed on the upper lead 14. A part of the heat dissipation module 3 is exposed from the surface of the upper lid 14, the other part is located in parallel with the empty space part 10 of the housing 1, and the isolation space part 30 is the heat dissipation module 3. Is formed within.

The power supply 4 is a circuit board 41, an adapter 42 connected to an end of the circuit board 41, a connector 43 located on the bottom lead 12 and electrically connected to the adapter 42, and a circuit board And a storage battery 44 electrically connected to 41.

In order to assemble the device, the heat dissipation module 3 is connected to the upper lead 14, and the circuit board 21 of the light emitting device 2 is closely attached to the upper surface of the heat dissipation module 3. Next, the storage battery 44 of the power supply unit 4 is located in the isolation space 30 of the heat dissipation module 3, and the circuit board 41 of the power supply unit 4 is the lower surface of the heat dissipation module 3. Positioned to attach to. Then, both sides of the heat dissipation module 3 are correspondingly matched in the sliding track 16 located on the inner wall of the housing 1 and the upper lid 14 is positioned to cover the upper opening 13. At the same time, the waterproof pad 17 is located between the upper lid 14 and the upper opening 13 to prevent moisture and dust. Similarly, the bottom lid 12 is positioned to cover the end of the handle 11, and the waterproof pad 17 is located between the bottom lid 12 and the handle 11. After pushing the upper lead 14 with the light emitting device 2, the power supply unit 4 and the heat dissipation module 3 are pushed into the empty space 10 of the housing 1, and the circuit board 41 of the power supply unit 4 is pushed. The adapter 42 is connected to the connector 43 located on the bottom lead 12 to complete the assembly of the embodiment of the present invention.

Referring back to FIG. 6, the LED chip 222 encapsulated in the base 221 of the light emitting module 22 may be a single high power LED chip, a plurality of low power LED chips, or an RGB LED chip. The light angle of the first lens 223 is between 60 ° and 120 °, and the wide angle of the corresponding second lens 224 is within 15 °. Such an optical lens structure may increase the illuminance density of the LED chip 222. When a plurality of sets of light emitting modules 22 irradiate at the same time, the irradiation brightness does not fade out by the increasing distance, and the irradiation light is in a single direction as a flat surface light source.

Moreover, the circuit board 21 may be electrically aligned in parallel or in series with one or more light emitting modules 22, and the circuit board 21 is attached to the surface of the heat dissipation module 3 and thus, the heat dissipation module 3 may absorb and dissipate heat generated from the LED chip 222 to prevent damage and thermal accumulation of the LED chip 222.

Since the waterproof pad 17 can be located in the flashlight device for the waterproof function and the dust prevention function, the heat generated from the light emitting device 2 and the power supply part 4 is sealed in the empty space part 10 of the housing 1. The heat accumulated in the empty space portion 10 without having a passage therefrom easily overheats the light emitting device 2 and the power supply portion 4, causing damage. Therefore, the circuit board 21 of the light emitting device 2 is attached to the upper surface of the heat dissipation module 3, and the storage battery 44 of the power supply unit 4 in the isolation space 30 of the heat dissipation module 3 is attached. ), The circuit board 41 of the power supply unit 4 is attached to the bottom surface of the heat dissipation module 3, and a part of the heat dissipation module 3 is exposed from the upper lead 14 to thereby emit light. 2) and the heat generated from the power supply unit 4 is transferred to the external cooling surface for dissipation. The heat dissipation module 3 operates to effectively transfer heat to the external cooling surface when the temperature of the hollow space 10 of the housing 1 is higher than the external surface, thereby reducing the internal temperature of the housing 1, and LED The light brightness of the chip 222 is prevented from fading out or shortening the endurance life, or from damage. The heat dissipation module 3 may be composed of a heat dissipation plate or a heat conduction block, and the material of the heat dissipation module 3 may be an alloy of aluminum, copper, aluminum and magnesium or other conductive metal materials. Moreover, the heat dissipation module 3 may be composed of heat conducting tubes for a better heat dissipation effect.

7 and 8, the housing 1 of the flashlight device may be further assembled into a rack 5. The rack 5 is arranged so as to mate with the housing 1, a positioning hole 52 formed on the surface connected with the receiving space 51, and a surface distant from the positioning hole 52. It consists of a hook 53 located on the other side. When positioning the housing 1 in the accommodating space 51 of the rack 5, the light emitting device 2 can be located in the positioning hole 52, and the housing 1 can be hooked according to the user's request. (53) can be suspended. This convenience prevents the user from holding the housing 1 for a long time during operation.

Referring to FIG. 9, the housing 1 may be connected to the charger 6 to charge power to the flashlight device. Upon charging, the charger 6 transmits to the connector 43 to convert AC (AC current) into DC (DC current), transfers from the adapter 42 to the circuit board 41, and the DC is stored. Stored in the battery 44 to supply power to the flashlight device.

10 is a cross-sectional view of a flashlight device according to another embodiment of the present invention. The housing 1 is composed of a chamber for accommodating a plurality of batteries 45 electrically connected to the circuit board 41 of the power supply unit 4. Any literal or structural modification that can achieve the effects described above is possible within the scope of the present invention.

1 is a perspective view of a flashlight device according to an embodiment of the present invention

Figure 2 is an exploded perspective view of a flashlight device according to an embodiment of the present invention

Figure 3 is a side cross-sectional view before assembly of the flashlight device according to an embodiment of the present invention

4 is a side cross-sectional view during assembly of a flashlight device according to another embodiment of the present invention;

Figure 5 is a side cross-sectional view after assembling the flashlight device according to another embodiment of the present invention

6 is a block diagram of a light emitting module according to an embodiment of the present invention

Figure 7 is an exploded perspective view of a flashlight device having a rack according to an embodiment of the present invention

8 is a perspective view of a flashlight device having a rack according to an embodiment of the present invention

Figure 9 is a side cross-sectional view while filling the flashlight device according to an embodiment of the present invention

10 is a side cross-sectional view of a flashlight device according to another embodiment of the present invention;

<Explanation of symbols for the main parts of the drawings>

1 housing 2 light emitting device

3: heat dissipation module 4: power supply

5: rack 6: charger

10: empty space portion 11: the handle

12 bottom lead 13 upper opening

14: upper lead 15: through hole

16: sliding track 17: waterproof pad

21: circuit board 22: light emitting module

30: isolation space portion 41: circuit board

42: adapter 43: connector

44: storage battery 45: battery

51: accommodating space portion 52: positioning hole

53: hook 221: base

222: LED chip 223: the first lens

224: second lens

Claims (7)

Consists of housing, light emitting device, heat dissipation module and power supply, The housing includes an empty space for accommodating the light emitting device, the heat dissipation module and the power supply unit, a handle at one end, an upper opening at the other end spaced from the handle, an upper lead connected to the upper opening, and Comprising a through hole formed between the handle and the upper opening, The light emitting device includes a circuit board having one or more light emitting modules located in the through hole of the housing, The heat dissipation module is connected to the upper lead, is attached to the light emitting device and the power supply to dissipate heat, a portion of the heat dissipation module is exposed from the upper lead, And the power supply unit comprises a circuit board and a storage battery electrically connected to the circuit board. The method of claim 1, A handle of the housing is connected to a bottom lid; The circuit board of the power supply section comprises an adapting portion at the end and a connector electrically connected to the adapting portion and located at a bottom lead; A first waterproof pad is located between an end of the handle of the housing and the bottom lid; Two sliding tracks are respectively located on two inner sidewalls of the housing to receive the heat dissipation module; The housing may be assembled into a rack consisting of a receiving space portion for receiving the handle, a positioning hole formed on a surface connected with the receiving space portion, and a hook located on a different surface away from the positioning hole; The housing may be connected to a charger, the charger being transferred through a circuit board of a power supply to convert AC into DC, and then sent back to a storage battery; Flashlight device, characterized in that the second waterproof pad is located between the upper opening and the upper lid of the housing. The method of claim 1, The light emitting module includes a base, one or more LED chips encapsulated in the base, a first lens encapsulated on the base, and a second lens correspondingly disposed on the first lens; The LED chip may be any one of a single high power LED chip, a plurality of low power LED chips, or an RGB LED chip; Flashlight device, characterized in that the optical angle of the first lens is between 60 ° ~ 120 °, the optical angle of the second lens is within 15 °. The method of claim 1, The heat dissipation module is located in parallel with the empty space of the housing and includes an isolation space to separate the light emitting device and the power supply; A circuit board of the light emitting device is attached to an upper surface of the heat dissipation module, a storage battery of the power supply unit is located in an isolation space of the heat dissipation module, and a circuit board of the power supply unit is attached to the bottom surface of the heat dissipation module; And the heat dissipation module includes a heat conduction pipe, and the heat dissipation module may be integrally formed with the upper lead. Consists of housing, light emitting device, heat dissipation module and power supply, The housing includes an empty space portion for positioning the light emitting device and the power supply unit, a handle formed on one side, an upper opening formed on the other surface spaced apart from the handle, an upper lead connected to the upper opening, the handle and the A through hole formed on a surface between the upper openings, a bottom lid connected to an end of the handle, and two waterproof pads respectively positioned between the upper opening of the housing and the upper lid and between the end of the handle and the bottom lid, The light emitting device includes a circuit board having one or more light emitting modules located in the through hole of the housing, And the power supply unit comprises a circuit board and a storage battery electrically connected to the circuit board. The method of claim 5, The light emitting module includes a base, one or more LED chips encapsulated in the base, a first lens encapsulated on the base, and a second lens correspondingly disposed on the first lens; The LED chip may be any one of a single high power LED chip, a plurality of low power LED chips, or an RGB LED chip; Flashlight device, characterized in that the optical angle of the first lens is between 60 ° ~ 120 °, the optical angle of the second lens is within 15 °. The method of claim 5, The housing may be assembled into a rack comprising an accommodation space portion for mating with the housing, a positioning hole formed on a surface connected with the accommodation space portion, and a hook located on a different surface away from the positioning hole; The housing may be connected to a charger, the charger is transmitted through a circuit board of the power supply unit for converting AC into DC, the flashlight device, characterized in that sent back to the storage battery.

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