JP6576410B2 - Display device - Google Patents

Description

  The present invention relates to a light source device including a light source module and a substrate holder that holds the light source module, and a display device using the light source device.

  There is a structure of an LED module that holds an LED and an LED substrate on which the LED is mounted on a substrate holder without using a fastening member such as a screw (for example, see Patent Document 1).

JP 2009-104963 A JP 2010-073588 A JP 2007-194067 A JP 2012-079657 A

  However, in Patent Document 1, the mounting portion disposed on the substrate holder has a structure in which the thickness direction of the substrate on which the LED is mounted is held from the mounting surface side of the LED, so the back surface of the substrate (mounting surface) on which the LED is mounted The side (rear surface side) and the side surface side are exposed, and there is a fear that a force is applied in a direction in which the LED substrate is deformed and damaged. In addition, since the LED substrate is exposed, a component that covers the LED module is required when the LED substrate is mounted.

  In Patent Document 2, it is necessary to use a plurality of parts to hold the substrate, and there is a problem in terms of assembly efficiency. Also, since the LED module is mounted inside the display device, it efficiently dissipates heat. I couldn't.

  The present invention makes it possible to easily mount the light source module on the substrate holder while protecting the vicinity of the light source with a simple configuration, and prevents the light source module from being stressed, and efficiently generates heat from the light source module. It aims at providing the light source device which radiates heat.

The display device of the present invention is
A main body with an opening formed on the front side from below to above,
A display unit attached to the opening;
A light source unit that is disposed above the display unit and that makes light incident on the display unit from above the display unit, and
The light source unit is
A light source part side display part engaging part which is an engaging part engaging with the display part;
The display unit
A display unit side light source unit engaging unit that is an engaging unit that engages with the light source unit side display unit engaging unit;
The display unit
The display part side light source part engaging part is engaged with the light source part side display part engaging part, thereby restraining the light source part from moving upward and downward, and the light source in the vertical direction. Position the part.

  According to the display device of the present invention, since the display unit side light source unit engaging portion engages with the light source unit side display unit engaging unit, the vertical movement of the light source unit is restricted. Variations in characteristics can be suppressed.

FIG. 3 is a perspective view showing a light source unit 300 according to the first embodiment. FIG. 5 is a five-side view illustrating the light source unit 300 according to the first embodiment. FIG. 5 is a five-side view of the light source module 351 according to the first embodiment. FIG. 4 is a partially enlarged view (perspective view) showing the vicinity of an electrical connection portion 356 of the light source unit 300 according to the first embodiment. FIG. 5 is a partially enlarged view (perspective view) showing the opposite side of FIG. The figure which shows the insertion to the surface holding | maintenance part 307a and the back surface holding | maintenance part 307b of the light source module 351 (board | substrate 354) of Embodiment 1. FIG. FIG. 5 is a diagram showing an engagement relationship between the light source module 351 (substrate 354) and the drop-off prevention piece 310 according to the first embodiment. FIG. 6 is a perspective view of a display device 1000 according to Embodiment 2. FIG. 4 is a four-side view of the display device 1000 according to the second embodiment. FIG. 6 is an exploded perspective view of a display device 1000 according to a second embodiment. FIG. 6 is a perspective view showing a main body 200 of a display device 1000 according to a second embodiment. FIG. 6 is a perspective view showing a display unit 400 of a display device 1000 according to Embodiment 2. The side view which shows the attachment procedure of the display part 400 and the light source part 300 to the main body 200 in the display apparatus 1000 of Embodiment 2. FIG. FIG. 10 is a partially enlarged view (perspective view) illustrating an attachment portion of a light source unit 300 between a main body 200 and a display unit 400 in a display device 1000 according to a second embodiment. FIG. 10 is a partially enlarged view (perspective view) illustrating a mounting portion of the light source unit 300 to the main body 200 and the display unit 400 in the display device 1000 according to the second embodiment. FIG. 10 is a partial cross-sectional view illustrating a fitting state between a main body and a light source unit 300 in a display device 1000 according to a second embodiment. FIG. 6 is a partial cross-sectional view showing a fitting state of display unit 400 and light source unit 300 in the display device of Embodiment 2.

Embodiment 1 FIG.
A light source unit 300 (light source device) according to the first embodiment will be described with reference to FIGS. The light source unit 300 is used in a display device such as a guide light described later in the second embodiment, for example. FIG. 1 is a perspective view of the light source unit 300. FIG. 2 is a five-side view of the light source unit 300. (A), (b), (c), (d), (e) are a front view, a top view, a bottom view, a left side view, and a right side view, respectively. FIG. 3 is a view of the light source module 351 viewed from the light source 355 side. FIG. 4 is a partial enlarged view (perspective view) showing the vicinity of the electrical connection portion 356 of the light source unit 300. FIG. 5 is a partially enlarged view (perspective view) showing the opposite side of FIG. FIG. 6 is a diagram illustrating insertion of the light source module 351 (substrate 354) into the front surface holding portion 307a and the back surface holding portion 307b. FIG. 7 is a diagram showing an engagement relationship between the light source module 351 (substrate 354) and the drop-off prevention piece 310. As shown in FIG.

(Configuration of the light source unit 300)
As shown in FIG. 1, the light source unit 300 includes a light source module 351 (light source mounting substrate) 1 and a substrate holder 301 that holds the light source module 351. The light source module 351 is a plate-like body having a light source 355 mounted on the mounting surface. The light source module 351 includes a substrate 354, a light source 355 (for example, an LED), and an electrical connection unit 356. A hole 357 is formed in the substrate 354.

(Substrate holder 301)
As the material of the substrate holder 301, PC resin, ABS resin, AES resin, or an alloy material thereof is used.

(Substrate 354)
As the material of the substrate 354, aluminum, glass epoxy resin, paper phenol resin, or the like is used. Further, as shown in FIG. 3, the substrate 354 has a substantially rectangular shape (L-shape). The portion of the electrical connection portion 356 corresponds to the lower portion of the L shape. Further, a hole 357 is provided in the substrate 354. The hole 357 can be used for fastening to another member with a screw or the like, or can be used for engagement with a positioning protrusion.

(Substrate holder 301)
As shown in FIGS. 4 and 5, the substrate holder 301 is provided with a front surface holding portion 307a, a back surface holding portion 307b, a drop-off prevention piece 310 (a removal prevention portion), and a light source module positioning protrusion 312 for attaching the substrate 354. Yes. The surface holding portion 307a is a plate-like body, and at least a part of one surface 307a-1 (FIG. 6B) is in contact with the mounting surface of the attached light source module 351. The back surface holding portion 307b is a plate-like body, and at least a part of one surface 307b-1 (FIG. 6B) is in contact with the back surface of the attached light source module 351. The light source module 351 is fixed to the substrate holder 301 by being sandwiched between one surface 307a-1 of the front surface holding portion 307a and one surface 307b-1 of the back surface holding portion. That is, the light source module 351 (substrate 354) is fixed to the substrate holder 301 by being sandwiched and pressed between one surface 307a-1 of the front surface holding portion and one surface 307b-1 of the back surface holding portion. Is done.
Further, an upper engaging portion 330, an engaging claw 329 and an engaging protrusion 328 for fixing the light source unit 300 to another member are provided on the side surface of the substrate holder 301. The upper engaging portion 330, the engaging claw 329, and the engaging protrusion 328 are provided at left and right symmetrical positions.

(Method of mounting the light source module 351 to the substrate holder 301)
A method for mounting the light source module 351 to the substrate holder 301 will be described below with reference to FIGS. 4 and 5. FIG. 6 corresponds to the AA cross section of FIG. The surface holding portion 307a in FIG. 6 is the right surface holding portion 307a in FIG. The substrate holder 301 has a front surface holding portion 307a and a back surface holding portion 307b, and a space corresponding to the substrate 354 of the light source module 351 is provided therebetween. The front surface holding portion 307a is shorter than the back surface holding portion 307b. As shown in FIGS. 5 and 6, the surface holding portion 307 a protrudes from the wall surface 313 in the normal direction of the wall surface 313. Similarly, the back surface holding portion 307b protrudes from the wall surface 313 in the normal direction. As shown in FIG. 6A, the surface holding portion 307a has a length A from the wall surface 313 to the tip in the normal direction of the wall surface 313 from the wall surface 313 in the normal direction of the wall surface 313 of the back surface holding portion 307b. It is shorter than the length B to the tip. This is to facilitate the insertion of the light source module 351. When the lengths of the front surface holding portion 307a and the back surface holding portion 307b are equal, it is necessary to insert the light source module 351 into the substrate holder 301 while maintaining the horizontal state. This is because the light source module 351 (substrate 354) can be inserted from an oblique direction as shown in FIG.

As shown in FIG. 6A, the thickness h2 of the surface holding portion 307a of the substrate holder 301 is equal to or higher than the height h1 of the light source (LED) 5. Yes.
That is, h2 ≧ h1. Thereby, when the light source unit 300 is attached to the attached component, other members are prevented from coming into direct contact with the light source 355. That is, the surface holding portion 307a has a thickness h2 that is greater than the height h1 of the light source 355 from the mounting surface in the normal direction of the mounting surface of the substrate 354.

  The substrate holder 301 has a protective wall 314 (FIG. 1) for protecting the electrical connection portion 356 in the vicinity where the electrical connection portion 356 of the light source module 351 is disposed. The structure is such that no force from the (end) direction is applied.

  The substrate holder 301 is provided with a light source module positioning projection 312 (FIG. 1), which restricts the movement of the light source module 351 in the lateral direction (longitudinal direction). As a result, the horizontal mounting position of the light source module 351 to the substrate holder 301 is determined.

  The light source module 351 is inserted into the substrate holder 301 in the order of arrows (1) and (2) in the directions of arrows (1) and (2) shown in FIGS. The directions of arrows (1) and (2) in FIGS. 4 and 5 are the directions of arrows (1) and (2) in FIG. The substrate 354 of the light source module 351 has a substantially rectangular shape as described above. As shown in FIG. 6, the substrate 354 has a short sliding direction between the one surface 307a-1 of the front surface holding portion 307a and the one surface 307b-1 of the back surface holding portion 307b. It is attached to the substrate holder 301 by sliding it so as to be in the hand direction.

  At this time, the drop-off prevention piece 310 hinders insertion, but the drop-off prevention piece 310 is elastically deformed upward by inserting the light source module 351 from the drop-off prevention piece 310 in an obliquely downward direction in FIGS. 4 and 5. The deformation is returned after being inserted, so that the side end of the light source module 351 is engaged. FIGS. 7A and 7B are views showing the relationship between the light source module 351 and the drop-off prevention piece 310 in this case. (A) is in the middle of insertion of the light source module 351 with respect to the drop-off prevention piece 310, (b) shows the end of insertion of the light source module 351. The fall-off prevention piece 310 includes an end surface 351-1 (FIG. 7A) that appears as the thickness of the substrate 354, and the one surface 307 b of the surface holding portion 307 a and the one surface 307 b of the back surface holding portion 307 b. -1 to prevent the substrate 354 (light source module 351) from coming out of the front surface holding portion 307a and the back surface holding portion 307b. The drop-off prevention piece 310 can prevent the light source module 351 from dropping from the light source module 351, and the light source module 351 cannot be easily removed. When removing the light source module 351, the drop-off prevention piece 310 is forcibly elastically deformed to release the engagement with the light source module 351. If there are a plurality of drop-off prevention pieces 310, the light source module 351 cannot be removed from the substrate holder 301 unless they are released at the same time. Therefore, a plurality of drop-off prevention pieces 310 is more preferred because it is more difficult to drop off.

  With the above configuration, the light source module 351 can be easily attached to the substrate holder 301 with a simple configuration (only one component of the substrate holder 301), and the light source module 351 can be easily detached from the substrate holder 301. There can be no configuration. Further, since the light source 355 is protected by the surface holding portion 307a, it is possible to prevent stress due to external force. Furthermore, since the light source module 351 is inserted into the space between the front surface holding portion 307a and the back surface holding portion 307b, it is possible to suppress warping of the light source module 351.

Embodiment 2. FIG.
A display apparatus 1000 according to the second embodiment will be described with reference to FIGS. The display device 1000 is a display device using the light source unit 300 described in the first embodiment. FIG. 8 is a perspective view of the display device 1000. FIG. 9 is a four-side view of the display device 1000. (A), (b), (c), (d) is a front view, a top view, a bottom view, and a right side view, respectively. FIG. 10 is an exploded perspective view of the display device 1000. FIG. 11 is a perspective view showing the main body 200 of the display device 1000. FIG. 12 is a perspective view showing the display unit 400 of the display device 1000. FIG. 13 is a side view illustrating a procedure for attaching the display unit 400 and the light source unit 300 to the main body 200 in the display device 1000. FIG. 14 is a partially enlarged view (perspective view) showing an attachment portion of the light source unit 300 between the main body 200 and the display unit 400 in the display device 1000. FIG. 15 is a partially enlarged view (perspective view) showing an attachment portion of the light source unit 300 to the main body 200 and the display unit 400 in the display device 1000. FIG. 16 is a partial cross-sectional view (cross-section BB in FIG. 9D) showing a fitting state of the main body and the light source unit 300 in the display device 1000. FIG. 17 is a partial cross-sectional view (a CC cross section in FIG. 9D) showing a fitting state of the display unit 400 and the light source unit 300 in the display device 1000. 16 corresponds to a cross section taken along the line B-B in FIG. 15 after the light source unit 300 is attached to the main body 200 and the display unit 400 from the B direction. Moreover, the cross section of FIG. 17 is equivalent to what looked at the CC cross section of FIG. 15 after attaching the light source part 300 to the main body 200 and the display part 400 from the C direction.

  As shown in FIGS. 8 and 10, the display device 1000 includes a main body 200, a light source unit 300, and a display unit 400.

(Engagement relationship of main body 200, light source unit 300, and display unit 400)
With reference to FIG. 10, the engagement relationship of the main body 200, the light source unit 300, and the display unit 400 will be described. The arrows in FIG. 10 indicate the engagement relationship. In addition, when the engagement partner was not visible, the components arranged at the symmetrical positions were connected by broken-line arrows. That is, for convenience, the relationship indicated by the broken line is not an actual engagement partner, but is arranged at a symmetrical position of the actual engagement partner. The solid arrow indicates the actual engagement partner. In addition, each engaging part is arrange | positioned in the symmetrical position.

(Engagement relationship between main body 200 and display unit 400)
(1) The main body side display portion engaging portion (upper side) 218 and the display portion side main body engaging portion (upper side) 423 are engaged,
(2) The main body side display portion engaging portion (lower side) 219 and the display portion side main body engaging portion (lower side) 424 are engaged.

(Engagement relationship between light source unit 300 and main body 200)
(1) The engaging claw 329 (FIG. 15) and the main body side light source unit engaging unit 226 (FIG. 14) are engaged,
(2) Furthermore, the upper engaging part 330 (FIG. 15) and the main body side light source part movement restraining part 225 (FIG. 14) are engaged.

(Engagement relationship between light source unit 300 and display unit 400)
The engagement protrusion 328 (FIG. 15) engages with the display unit side light source unit engagement unit 427 (FIG. 14).

  The main body 200 is made of PC (polycarbonate) resin, ABS resin, AES resin, alloy materials thereof, or the like.

  Further, as shown in FIGS. 9 and 11, a reinforcing metal fitting 214, a power terminal block 215, a battery 216, an operation unit 210, and a lighting device 217 are disposed inside the main body 200.

  The main body 200 has an upper surface side mounting hole 206, an upper surface side power supply hole 205, rear surface side mounting holes 211 and 213, and a rear surface side power supply hole 212 for attaching the display device 1000 to the ceiling or wall surface.

  The main body 200 has a main body side display portion engaging portion (upper side) 218 and a main body side display portion engaging portion (lower side) 219 to which the display portion 400 is attached. The main body side display portion engaging portion (upper side) 218 and the main body side display portion engaging portion (lower side) 219 are arranged on the left and right sides of the first side surface 221 and the second side surface 222 (FIG. 11) of the main body 200 as described above. Are provided symmetrically.

  Further, as shown in FIG. 14, the main body 200 has a main body side light source section engaging portion 226 for attaching the light source section 300 to the main body 200. The main body side light source unit engaging portion 226 is provided symmetrically on the left and right sides of the main body.

  The lighting device 217 has a function of turning on the light source 355 with an external power supply, a function of charging the battery 216, a function of turning on the light source 355 with the power of the battery 216 when the external power supply is cut off, and the battery 216 has a light source 355 for a specified time. It has a function of checking whether lighting is possible and a function of checking whether the light source 355 is normally lit.

  The operation unit 210 (FIG. 9C) includes a monitor 207, an inspection switch 208, and a light receiving unit 209. By operating the inspection switch 208, the lighting device 217 performs a predetermined inspection operation, and notifies the outside of the result by displaying on the monitor 207. In addition to the display function of the inspection result, the monitor 207 can display that the inspection is in progress, the state of charge of the battery 216, the connection state of the light source unit 300, and the life of the light source 355.

  The light receiving unit 209 receives a check operation start signal from the remote controller instead of operating the check switch 208 and causes the lighting device 217 to perform the check operation.

  As shown in FIG. 12, the display unit 400 includes a light guide 420, a display plate 421, and a display plate case 422. A reflective sheet (not shown) may be provided between the display panel case 422 and the light guide 420, and an optical sheet (not shown) may be provided between the light guide 420 and the display board 421.

  As the material of the display panel case 422, PC resin, ABS resin, AES resin, or an alloy material thereof is used. The light guide 420 and the display plate 421 are made of a transparent material such as PMMA resin or PC resin.

  Further, as shown in FIG. 12, on the back side of the display plate case 422, a display unit side main body engaging portion (upper side) 423 for attaching the display unit 400 to the main body 200, a display unit side main body engaging portion (lower side) 424. The display unit side main body engaging portion (upper side) 423 and the display unit side main body engaging portion (lower side) 424 are provided symmetrically on the left and right of the display plate case 422. In this state, the opening on the front surface of the main body 200 (opening surface of the opening) is closed by the display unit 400. Accordingly, it is possible to prevent the inside of the main body 200 from being inadvertently touched when the light source unit 300 is attached.

  FIG. 13 is a diagram illustrating a method of attaching the display unit 400 and the light source unit 300 to the main body 200. The display unit 400 is attached to the main body 200 by sliding from above to below. After the display unit 400 is attached to the main body 200, the light source unit 300 is fitted and attached to the main body 200 and the display unit 400 from the front side of the instrument. The engagement relationship is as described in the explanation of FIG.

  FIG. 14 is a diagram illustrating an engagement portion of the main body 200 and the display unit 400 with respect to the light source unit 300. On the upper side surface of the main body 200, main body side light source unit engaging portions 226 are provided symmetrically on the left and right. This corresponds to the engaging claw 329 of the light source unit 300 (substrate holder 301) shown in the first embodiment. Further, on the upper part of the display unit 400, display unit side light source unit engaging units 427 are provided symmetrically on the left and right. This corresponds to the engagement protrusion 328 of the light source unit 300 (substrate holder 301) shown in the first embodiment.

  FIG. 16 is a cross-sectional view showing an engaged state of the main body 200 and the light source unit 300. The cross section of FIG. 16 is a BB cross section of FIG. The cross section shown in FIG. 16 corresponds to the cross section taken along the line B-B in FIG. 15 after the light source unit 300 is mounted on the main body 200 and the display unit 400. The engaging claw 329 provided in the light source unit 300 is attached to the main body 200 from the front side of the main body 200. At that time, the engaging claw 329 is fitted and attached by being deformed and deforming the main body side light source part engaging part 226 and returning its shape by elasticity.

  FIG. 17 is a cross-sectional view showing an engaged state of the light source unit 300 and the display unit 400. The cross section of FIG. 17 is a CC cross section of FIG. 17 corresponds to a cross section taken along the line C-C in FIG. 15 from the C direction after the light source unit 300 is mounted on the main body 200 and the display unit 400. The engaging protrusion 328 provided in the light source unit 300 is applied while deforming the small protrusion 428 (FIG. 14) in front of the display unit side light source unit engaging unit 427 provided in the display unit 400, and the shape returns due to elasticity. The display unit side light source unit engaging portion 427 is fitted and attached. Since the fitting state is as shown in FIG. 17, the movement in the vertical direction is restricted, and the positional relationship (vertical positional relationship) between the light source unit 300 and the display unit 400 does not vary more than the clearance. Therefore, it is possible to suppress fluctuations in the optical characteristics of the display device 1000. The light source unit 300 and the display unit 400 are simultaneously moved and detached from the main body 200 when the upper engaging unit 330 of the light source unit 300 and the upper engaging unit main body side light source unit movement suppression unit 225 abut on each other. Can be prevented.

  With the above configuration, the light source unit 300 can be easily and reliably attached and detached, and fluctuations in the optical performance of the display device 1000 can be suppressed. Further, according to the configuration of the present embodiment, since the light source unit 300 is disposed in the main body 200 so as to configure the outline of the display device 1000, it is possible to efficiently dissipate heat. In the description of the present embodiment, the substrate holder 301 is made of a synthetic resin. However, if it is desired to improve the heat dissipation performance, the heat dissipation effect can be further enhanced by using a heat dissipation resin or a metal-based material.

  200 Main body, 205 Upper surface side power supply hole, 206 Upper surface side mounting hole, 207 Monitor, 208 Inspection switch, 209 Light receiving unit, 210 Operation unit, 211, 213 Rear side mounting hole, 212 Rear side power supply hole, 214 Reinforcing bracket, 215 Power terminal block, 216 battery, 217 lighting device, 218 main body side display portion engaging portion (upper side), 219 main body side display portion engaging portion (lower side), 225 main body side light source portion movement inhibiting portion, 226 main body side light source portion Engagement unit, 300 Light source unit, 301 Substrate holder, 307a Front surface holding unit, 307b Back surface holding unit, 310 Fall-off prevention piece, 312 Light source module positioning projection, 328 Engagement projection, 329 Engagement claw, 330 Upper engagement unit, 351 Light source module, 354 substrate, 355 light source, 356 electrical connection, 357 hole, 400 display, 420 Light body, 421 Display plate, 422 Display plate case, 423 Display unit side main body engaging unit (upper side), 424 Display unit side main unit engaging unit (lower side), 427 Display unit side light source unit engaging unit, 1000 Display device .

Claims (2)

A main body with an opening formed on the front side from below to above,
A display unit attached to the opening;
A light source that is arranged above the display unit along the width direction of the display unit, which is a direction orthogonal to the direction from the lower side to the upper side, and that makes light incident on the display unit from the upper side of the display unit The department and
The light source unit is
A light source part side display part engaging part which is an engaging part engaging with the display part;
The display unit
A display unit side light source unit engaging unit that is an engaging unit that engages with the light source unit side display unit engaging unit;
The display unit
The light source unit is engaged with the display unit side light source unit engaging unit in the width direction by fitting the light source unit side display unit engaging unit facing the display unit side light source unit engaging unit in the width direction. A display device that restrains the movement of the light source unit in the vertical direction and restricts the movement of the light source unit in the vertical direction. A main body with an opening formed on the front side from below to above,
A display unit attached to the opening;
A light source unit that is disposed above the display unit and that makes light incident on the display unit from above the display unit, and
The light source unit is
A light source part side display part engaging part which is an engaging part engaging with the display part;
The display unit
A display unit side light source unit engaging unit that is an engaging unit that engages with the light source unit side display unit engaging unit;
The display unit
The display part side light source part engaging part is engaged with the light source part side display part engaging part, thereby restraining the light source part from moving upward and downward, and the light source in the vertical direction. Position the part,
The opening of the body is
A display device closed only by the display unit.

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