JP2010115949A - Arrangement structure of hold work led lighting device for automobile transporting vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hold work LED lighting device for an automobile transportation vessel, performing arrangement of LED light source exceeding the lowest illumination intensity required in the warehouse of the automobile transportation vessel using a plurality of easily exchangeable LEDs, improving directivity by devise of a base plate shape, and using in common an LED heat release plate. <P>SOLUTION: In the hold work LED lighting device 10 for the automobile transportation vessel, a plurality of LEDs (light emitting diode) 1 are arranged in two rows. The LEDs 1 in the respective rows comprise a reflection plate 2 having an outer inclined surface 21 inclined to an outer side corresponding to the directivity, and also having an inner inclined surface 22 inclined and extended to an inner side corresponding to the directivity of the LEDs 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a work LED lighting device in a storehouse of a car carrier, and more particularly, to a work LED lighting device when a lashing hole is attached between a car securing bracket of a load in a vehicle loading section (a storehouse) of a car carrier.

  Conventionally, this type of work lighting device has been used as a lighting device including a fluorescent lamp.

  However, the fluorescent tube used for the fluorescent lamp has a short life when viewed from the usage time as a lighting device, and because it emits light in the ultraviolet region, a large number of insects gather, and work is required to clean the dead bodies. . Furthermore, if the weight of the fluorescent lamp body is heavy and the weight can be reduced as much as possible, it will not exceed that. Also, since the fluorescent tube used in the fluorescent lamp is made of mercury, if possible, from this point of view, the fluorescent tube It is desirable to avoid use.

  Then, although it devised to make it the work lighting apparatus which used several LED (light emitting diode), since the warehouse lighting apparatus of a car carrier ship is obliged to ensure at least 30 lux in a loading work area, It is necessary to obtain an illuminance equivalent to the illuminance of a fluorescent lamp used up to.

  Moreover, in order to maintain the above illuminance, the fluorescent lamp has to be replaced in about 1 to 1.5 years. Therefore, in the case of LED lighting, it is necessary to use a long-life LED light source in consideration of maintenance of the illuminance, replacement period, replacement cost, and the like.

  There are various examples in which a plurality of LEDs are arranged and used as an illuminating device, but it is difficult to find one that uses a plurality of LEDs and can obtain a sufficient predetermined illuminance as required.

  However, as an example of using a mountain-shaped or corrugated reflector as the reflector of the illuminating device, the present invention is the object of the present invention for a “power-saving internal illumination that does not notice uneven illumination”. Although the operational effects are different, there is one disclosed in, for example, Japanese Utility Model Laid-Open No. 5-29083.

  The one disclosed in the Japanese Utility Model Laid-Open No. 5-29083 is related to the name “internal lighting signboard” of the invention, “a thin box-like case having an opening on one surface, and a parallel arrangement at regular intervals in this case. A plurality of light sources, ... the reflector has a white semi-gloss reflective surface, and the cross-section is a chevron with horizontal portions on both sides. Because of such a configuration, “the number of fluorescent lamps of a conventional internally-lit signboard can be reduced by half without causing uneven illumination, and the equipment cost, power cost, and repair costs can be reduced. (See paragraph number 0017)).

However, what is disclosed in the publication is premised on the use of a fluorescent lamp, and is different from that of the present invention in consideration of the directivity characteristics of the LED.
Japanese Utility Model Laid-Open 5-29083

  Therefore, the present invention uses a plurality of easily replaceable LEDs, arranges the LED light source exceeding the minimum illuminance required in the warehouse of the car carrier, and improves the directivity and LED heat sink by devising the substrate shape. It is an object to provide an in-house work LED lighting device for an automobile carrier that is also used as a vehicle.

In order to achieve the above object, an invention according to claim 1 of the present application is an illumination device in which a plurality of LEDs (light emitting diodes) are arranged in two rows in a warehouse work LED illumination device of an automobile carrier ship. The LED has an outer inclined surface that is inclined outward corresponding to the directivity characteristic of the LED, and an inner inclined surface that is extended inward and inclined corresponding to the directivity characteristic of the LED. It consists of a W-shaped reflector.
In the invention according to claim 2 of the present application, in the in-house work LED lighting device of the car carrier according to claim 1, the outer inclined surface of the reflector has a directivity characteristic of the LED of about ± 60 degrees. In some cases, the outer inclined surface has an outward inclination angle of 25 degrees with respect to the vertical.
Furthermore, in the invention according to claim 3 of the present application, in the interior work LED lighting device of the car carrier according to claim 2, the inner inclined surface of the reflector has a directivity characteristic of the LED of about ± 60 degrees. In some cases, the outer inclined surface has an inward inclination angle of 120 degrees inward.
In addition, the invention according to claim 4 of the present application is the LED lighting device for the inside of a car carrier of the car carrier according to claim 1, wherein the LED is 5 in a line when the luminous flux per LED is about 200 lumens. It is characterized by arranging LEDs.
Furthermore, in the invention according to claim 5 of the present application, in the warehouse LED lighting device of the car carrier according to claim 1, the plurality of LEDs arranged in the two rows are alternately spaced in two rows. It is characterized by being arranged in.
Further, the invention according to claim 6 of the present application is the LED illumination device for work in a warehouse of a car carrier according to claim 1, wherein the reverse W-shaped reflector is a junction portion of the LED as a heat radiating fin of the LED to be attached. The temperature of the LED is reduced, and the life of the LED to be attached is extended.

  The LED light source exceeding the minimum illuminance required in the warehouse of the car carrier was arranged, and the directivity was improved and the LED heat radiating plate was also used by devising the shape of the substrate and the reflector. As a result, it was possible to obtain incidental effects such as power saving, light weight, mercury-free, and pest-free LED. It also leads to an increase in the number of units loaded due to a reduction in lamp weight or a reduction in transportation fuel costs.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the in-house work LED lighting device for a car carrier according to the present invention will be described in detail based on the drawings.

  First, the best mode for carrying out the in-house work LED lighting device of the car carrier was examined as Example 1.

[Determination of LED to be used]
The LED characteristics used for the in-house work LED lighting device of the car carrier according to the first embodiment, in particular, the directivity characteristics and the amount of light were examined.

  First, this type of lighting device is generally mounted at a height of 1.95 m to 5.15 m in a car carrier. Considering the mounting work height between the hall and the cargo lashing fixture of the load, an appropriate LED was examined in order to ensure the minimum illumination intensity in this work area.

  This examination was performed by applying a calculation formula for direct illuminance by a linear light source similar to that of a fluorescent lamp, based on a schematic diagram of direct illuminance calculation by a linear light source shown in FIG. FIG. 1 is a schematic diagram of direct illuminance calculation using a linear light source. In FIG. 1, I is the length of the light source, Iθ is the luminous intensity per unit in the θ direction, h is the height, and d is directly under the LED. The distance from water to water, θ, is the angle formed by the direction directly below the LED and the calculation point P direction.

In FIG. 1 of the above schematic diagram,
The normal illuminance is determined by En = Iθ / 2 {l / (h ² + d ² + l ² ) + l / √ (h ² + d ² ) × tan ⁻¹ [l / √ (h ² + d ² )]}. Can

The horizontal illuminance is Eh = h / √ (h ² + d ² ) × En,
The vertical surface illuminance can be expressed by the following equation.
Ev = d√ (h ² + d ² ) × En
Ex = Iθ / 2 × √ (h ² + d ² ) × / l ² (h ² + d ² + l ² )

As a result, the luminous flux per LED is 200 lumens, and assuming that 10 are provided, 200 (lm) × 10 = 2000 (lm) is guided.
Therefore, the following illuminance can be obtained by applying the vertical illuminance (Ex) from the LED performance.

That is, when Iθ = 2000 (lm), h = 2.25 m, d = 0 m, I = 1.22 m,
Wx = 101 lux (lx)

  Further, since this LED has a directivity characteristic as shown in FIG. 2, the mounting height is set to 2.25 m in consideration of the working area height, and the illuminance under the vertical is 80 at the mounting height. The mounting angle of the LED was determined so that the illuminance of the floor surface 4.5 m away in the horizontal direction on the basis of vertically below could be secured at 30 lux or more. FIG. 2 is a measurement schematic diagram illustrating the directivity characteristics of the LEDs used in the warehouse work LED lighting device of the car carrier according to the first embodiment.

In addition, it is important to select the mounting angle of the LED to be used in order to have the directional characteristics as described above and to secure the necessary minimum illuminance.
FIG. 3 shows how much the illuminance is reduced when the illuminance from one LED, which is a light source, is separated from the LED light source in the horizontal direction in order to study the optimum arrangement in consideration of the luminous flux of the LED. It is a figure which shows the measurement point which measures whether this occurs, and is a figure which shows the outline of horizontal illuminance reduction of a light source. In FIG. 3, an LED light source having a luminous flux equivalent to a 40 W straight tube fluorescent lamp was used as the light source, and a light source in which the LED was inclined by 25 degrees was used.

  FIG. 4 is a diagram showing the illuminance at the mounting angle of the LED (light source) and the distance from the light source, where 10 LEDs each having a luminous flux of 150 lumens are used as a light source, At a measurement point of .25m, 2.5m, 3.0m, 3.5m, 4.0m, 4.5m, 5.0m, 5.5m, 6.0m, the measurement angle of the light source is changed from 0 ° to 60 °. The illuminance is measured by tilting, and the results are tabulated. In addition, as conditions of LED, what was accommodated in the glove | globe was used, and it measured every 5 degree | times from the light source measurement angle 0 to 60 degree | times.

As a result, it was found that even when the distance from the light source is 4.0 m at the maximum, the object having a slope of 25 ° can achieve 30 lux or more at the measurement point.
Therefore, the mounting inclination angle of each LED body is set to about 25 °. This means that, as long as an LED having a directivity characteristic as shown in FIG. 2 and having a half-value angle of about 60 ° on the upper limit side is used, if the half-value angle is added to 85 °, it is within the half-value angle. In other words, as shown in FIG. 3, it is possible to secure not less than 30 lux of floor illuminance not only vertically under the LED but also 4.5 m away from the horizontal direction. The angle was set at 25 °.

  Next, with respect to the LED lamp configured by arranging a plurality of LEDs according to the present embodiment, each height from 2.25 m to 6 m in sequence (2.25 m, 2.5 m, 3 m, 4 m, 5 m, 6 m). ) Was investigated for the light distribution. FIG. 5 is a diagram showing a light distribution curve showing an irradiation angle with respect to the mounting height (m). As shown in FIG. 5, at an irradiation angle of 60 degrees, if arranged at a height of 2.25 m, It can be seen that the minimum illumination of 30 lux can be secured.

Moreover, based on said measurement result, LED was arrange | positioned in height 2.25m height, and it was examined how much illumination intensity could be ensured as it left | separated from right under to the periphery.
FIG. 6 is a diagram showing the relationship of illuminance reduction from directly below to the horizontal direction in an LED lamp configured by arranging a plurality of LEDs at a mounting height of 2,25 m.

  As shown in FIG. 6, the illuminance of 85.2 (lx) immediately below the LED decreases as it goes away, and 30.0 (lx) is measured at a point 4.0 m away from just below. It was found that the minimum illuminance can be secured up to 4m in the periphery when installed at a height of 2.25m.

When this measurement result is compared with the measurement result at the same height on the ship, it can be seen that the numerical value at each point is slightly different. The major cause of this difference is presumed to be due to the reflection of the light emitting source from the LED, and it is presumed that this influence is most greatly affected especially in the vertical direction. It can also be seen that as the distance from the light source increases, it is less susceptible to reflection, and the illuminance tends to be lower than the estimated value obtained as a result of the calculation.
[Examination of reflector to attach LED]

  Considering the above measurement and calculation results, the best mode for carrying out the in-house work LED lighting device of the car carrier according to the present invention is prototyped and examined in the in-house work LED lighting device of the car carrier according to the first embodiment. did. The in-house work LED lighting device of the car carrier according to the first embodiment employs an LED with an improved LED light source targeting the luminance, luminous flux, and illuminance of a fluorescent lamp used in the past, and the directivity of the LED ( 120 °) is improved so that the shape of the LED-equipped substrate is improved and the directivity of 180 ° is obtained. In other words, it is an LED illuminating device that replaces the performance of a fluorescent lamp, and the luminous flux is diffused and improved as compared with a conventional illuminating device in which only a necessary amount of luminous flux is arranged in a plane. is there.

The in-house work LED lighting device of the car carrier according to the first embodiment will be described in detail based on the drawings.
FIG. 7 is a diagram showing a schematic configuration of the in-house work LED lighting device of the car carrier according to the first embodiment. In FIG. 7, reference numeral 1 denotes an LED LL41279-THWWSA-KIT (IDEC sunshine kit SA grade white: LED manufactured by IDEC Opto Device Co., Ltd., which meets the above requirements and conforms to the general rules of JISF0808 electrical equipment environmental test. 1 light).

  Details of the rating (initial electrical / optical characteristics) of this LED are as follows.

In FIG. 7, reference numeral 2 denotes an LED 120 having a total length of approximately 120 cm and having a mounting diameter of 30 mmφ, and each of the five LEDs 1 can be arranged at a predetermined interval, and the reflective surfaces 21, 21, 22, 22 is a reflector having an inverted W-shaped cross section having a total width of about 12 cm. That is, the LED 1 has a width and a length that can be arranged at predetermined equal intervals on an inclined surface facing outward, and has an inverted W-shape configured so that five LEDs 1 can be arranged in the length direction. In consideration of the directivity of the LED 1, the reflector has reflection surfaces 21 and 21 that are inclined to the outside by 25 degrees, and the extension thereof is inclined to the inside by 130 degrees as described above. Reflecting surfaces 22 and 22 are provided. The reflecting plate 2 having an inverted W-shaped cross section functions as a substrate to which the LED is attached and also functions as a heat radiating plate for heat generated from the LED 1. Specifically, the LED 1 has a width of 36 mm with respect to the mounting of the LED 1 and is bent outward at an angle of 65 degrees, and is further extended inward at an angle of 130 degrees to an extension of the bending. The reflecting plate 2 is bent and has a reflecting surface 22 having a width of 20 mm and a reverse W-shaped cross section.
Note that the lifetime of the LED depends on the junction temperature of the LED. Therefore, the best measure for extending the life of the LED is to provide a heat dissipating fin structure that can efficiently lower the temperature of the junction portion of the LED. For this reason, in the warehouse work LED lighting device of the car carrier according to the first embodiment, the LED mounting plate is improved, and a reflection plate that efficiently reflects and diffuses the LED radiation light is formed, and a wide configuration is provided. By utilizing it as an LED heat radiation fin having a heat radiation area, the temperature of the LED junction portion is lowered and the life of the LED is extended.

  Reference numeral 3 denotes a chassis in which the reflecting plate 2 having the inverted W-shaped cross section is accommodated, and reference numeral 4 denotes a cover that covers the chassis 3. Reference numerals 5 and 5 denote mounting brackets for attaching the chassis 3 to a wall such as a ceiling, and reference numerals 6 and 6 denote screws. Reference numeral 7 denotes a power supply for supplying power to these LEDs, and those having an output rating of 33 W and 270 mA are used. The code | symbol 10 is the warehouse work LED lighting apparatus 10 of the vehicle carrier which concerns on the present Example 1, and these each member is assembled and completed.

  FIG. 8 is a diagram showing a schematic cross-sectional shape of the reflection plate 2 having an inverted W-shaped cross section. The LEDs 1 are arranged at predetermined intervals on the surfaces 21 and 21 inclined to the outside by 25 degrees, and the reflection is performed. The extension of the surfaces 21, 21 has reflective surfaces 22, 22 that are inclined approximately 130 degrees inward.

  FIG. 9 shows a schematic shape of an LED (IDEC sunshine kit SA grade white: LED LL41279-THWWSA-KIT) 1 manufactured by IDEC Opto Device Co., Ltd., which is used in a warehouse work LED lighting device of a vehicle carrier according to the first embodiment. FIG. 9A is a diagram showing an outline of the mounting outer shape, FIG. 9B is a schematic shape of the LED 30 to be used, and FIG. 9C is a side view thereof. 9, reference numeral 30 denotes an LED, 31 denotes a light emitting surface, 32 denotes an anode, 33 denotes a cathode, 34 denotes an anode side electrode, 35 denotes a cathode side electrode, and 36 denotes a mounting frame. In addition, the LED 1 is attached to the reflection plate 2 in a replaceable manner by an external set screw. Therefore, when the LED 1 is deteriorated and needs to be replaced, the LED 1 can be easily replaced by removing the set screw (not shown).

  Moreover, FIG. 10 is a figure which shows the state which laid in the warehouse ceiling the LED lighting apparatus in the warehouse of the motor vehicle carrier which concerns on the present Example 1. FIG.

  Since it was set as the work interior lighting LED lighting device 10 of the car carrier according to the first embodiment configured as described above, the work light illumination system of the LED light source exceeding the minimum illuminance of 30 lux required for the car carrier can be used. As a result, by adopting the reflection plate 2 having an inverted W-shaped cross section, it is possible to improve the directivity so that even a narrow directivity LED can illuminate a wide range, and as a result, the LED The use of can achieve power saving and light weight with respect to work lighting in the warehouse of a car carrier. Further, since the reflecting plate 2 having the inverted W-shaped cross section has a wide area, the wide area plays a role of a heat radiating fin with respect to the LED 1, and as a result, the temperature of the junction portion of the LED 1 is reduced. As a result, the life of the LED 1 can be extended, and the use of the LED can be accompanied by incidental effects such as mercury-free and pest-free. It also leads to an increase in the number of units mounted due to the reduction of the lamp weight or a reduction in transportation fuel costs. Furthermore, it has a longer life than conventional fluorescent lamps and can reduce the replacement period and cost. It has the effect.

  The present invention is used as an LED lighting device for work in a warehouse of a car carrier.

FIG. 1 is a schematic diagram of direct illuminance calculation using a linear light source. FIG. 2 is a measurement schematic diagram illustrating the directivity characteristics of the LEDs used in the warehouse work LED lighting device of the car carrier according to the first embodiment. FIG. 3 shows how much the illuminance is reduced when the illuminance from one LED, which is a light source, is separated from the LED light source in the horizontal direction in order to study the optimum arrangement in consideration of the luminous flux of the LED. It is a figure which shows the measurement procedure of whether or not. FIG. 4 is a diagram showing the illuminance at the mounting angle of the LED (light source) and the distance from the light source. FIG. 5 is a diagram showing a light distribution curve indicating an irradiation angle with respect to the mounting height (m). FIG. 6 is a diagram showing the relationship of illuminance reduction from directly below to the horizontal direction in an LED lamp configured by arranging a plurality of LEDs at a mounting height of 2,25 m. FIG. 7 is a diagram illustrating a schematic configuration of the in-house work LED lighting device of the car carrier according to the first embodiment. FIG. 8 is a diagram showing a schematic cross-sectional shape of the W-shaped reflecting plate 2. FIG. 9 is a diagram illustrating a schematic shape of the LED 1 used in the warehouse work LED lighting device of the vehicle carrier according to the first embodiment. FIG. 10 is a diagram illustrating a state in which the interior work LED lighting device of the car carrier according to the first embodiment is laid on the interior ceiling.

Explanation of symbols

1 LED (light emitting diode)
2 Reflecting plate 3 Chassis 4 Cover 5 Mounting bracket 6 Screw 10 Illuminating device 21 Inclined surfaces 21 and 22 Reflecting surface

Claims (6)

  In the illumination device in which a plurality of LEDs (light emitting diodes) are arranged in two rows, each LED in each row has an outer inclined surface that is inclined outward in accordance with the directivity characteristic of the LED, and the LED And an inverted W-shaped reflector having an inner inclined surface extending inwardly in accordance with the directivity characteristic of the interior of the vehicle carrying vessel LED lighting device.   The outer inclined surface of the reflecting plate has an outer inclined angle of 25 degrees with respect to vertical when the directivity characteristic of the LED is about ± 60 degrees. The in-house work LED lighting device for a car carrier according to claim 1.   The inner inclined surface of the reflecting plate has an inward inclination angle of 120 degrees inward with respect to the outer inclined surface when the directivity characteristic of the LED is about ± 60 degrees. The in-house work LED lighting device for an automobile carrier according to claim 2.   The said LED is a work LED illuminating device of the inside of a car carrier according to claim 1, wherein five LEDs are arranged in a line when the luminous flux per LED is about 200 lumens.   The plurality of LEDs arranged in two rows are alternately arranged at equal intervals over two rows, and the interior work LED lighting device for a car carrier according to claim 1.   2. The automobile according to claim 1, wherein the inverted W-shaped reflecting plate serves to reduce the temperature of the junction portion of the LED as a heat radiation fin of the LED to be attached, and to extend the life of the LED to be attached. LED lighting device for work in the warehouse of a ship carrier.

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